The National Bovine Data Centre (NBDC) collates the completed lactation results recorded in the United Kingdom from a range of ICAR approved organisations (see “Sources”). The results used for the performance statistics in this section are gathered exclusively for animals registered with the appropriate dairy cattle breed society.
Throughout the period 2015 to late 2017, many UK dairy farms experienced a period of depressed milk prices below the long-term average (source: AHDB UK, GB & NI Farmgate Prices). This did not encourage producers to manage for higher lactation milk yields. From late 2017 and into 2018 however farmgate process improved closer to the 5-year average. The impact of this across most breeds can be seen in the charts for annual average lactation yields. Where during 2015-2017 yields stagnated or even declined slightly. While over the 2018 production year yields have improved by around 1-2% for most major UK breeds.
Over the same periods, by contrast, overall health and fertility measures have shown consistent improvements. Particularly lactation average Somatic Cell Counts (SCC) and overall Calving Intervals. Most herds and breeds have produced year on year improvement in those two key measures. Except perhaps where a relatively small population size means some temporary reversals are apparent among a generally improving longer term trend. Influenced by a relatively small number of animals within those populations.
Particularly among the Holstein-Friesian and Ayrshire populations, which collectively account for over 95% of the data collected for these results, the sustained improvements in Calving Intervals (as a measure of fertility) are most marked. These are visible in the charts for annual trends in Calving Interval in the following sections. In all three population sectors Calving Intervals have improved from peaks around 2008-2009 to levels approaching 400 days, last seen around the turn of the millennium. Geneticists and pundits agree that these trends are at least in part, influenced by the introduction of daughter fertility indices into to the overall genetic index scores produced for breeding bulls. Which have made it increasingly difficult for a bull transmitting poor daughter fertility to achieve a top overall score. Along with the efforts of breeders and genetic source suppliers to eliminate bulls with poor daughter fertility from their studs.
To be selected for inclusion in these analyses, lactation records must meet selected qualifying criteria.
Each lactation must:
The lactation data held by NBDC includes results recorded in the UK by the organisations listed below. Each of these organisations perform milk recording to the guidelines and standards defined by the International Committee for Animal Recording (ICAR).
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The Cattle Information Service |
National Milk Records Plc |
Dale Farm Ltd |
Isle of Man Dept. of Agriculture |
Royal Jersey Agriculture & Horticulture Society |
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices. The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results. Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results. The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(AYR) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 10766 | 6832 | 4.07 | 3.30 | 278 | 226 | 212 | 415 |
| 2007 | 12872 | 6873 | 4.06 | 3.32 | 279 | 228 | 213 | 415 |
| 2008 | 12937 | 6913 | 4.10 | 3.33 | 283 | 230 | 204 | 419 |
| 2009 | 12854 | 6844 | 4.09 | 3.35 | 280 | 229 | 208 | 416 |
| 2010 | 12112 | 6944 | 4.11 | 3.32 | 285 | 230 | 196 | 418 |
| 2011 | 12880 | 7107 | 4.09 | 3.31 | 291 | 236 | 185 | 415 |
| 2012 | 13919 | 7040 | 4.11 | 3.29 | 289 | 231 | 196 | 415 |
| 2013 | 12893 | 6829 | 4.14 | 3.29 | 282 | 225 | 207 | 416 |
| 2014 | 12851 | 7037 | 4.10 | 3.31 | 288 | 233 | 204 | 416 |
| 2015 | 13168 | 6940 | 4.06 | 3.33 | 282 | 231 | 190 | 414 |
| 2016 | 12858 | 6897 | 4.12 | 3.34 | 284 | 230 | 176 | 411 |
| 2017 | 11894 | 6828 | 4.14 | 3.33 | 283 | 227 | 175 | 406 |
| 2018 | 11583 | 6923 | 4.15 | 3.32 | 288 | 230 | 167 | 404 |
| 2019 | 11263 | 7066 | 4.14 | 3.33 | 293 | 235 | 166 | 405 |
| 2020 | 10783 | 7150 | 4.19 | 3.35 | 300 | 240 | 168 | 404 |
| 2021 | 10801 | 7249 | 4.24 | 3.33 | 308 | 242 | 173 | 403 |
| 2022 | 10860 | 7160 | 4.23 | 3.31 | 303 | 237 | 168 | 403 |
| 2023 | 10167 | 7054 | 4.23 | 3.31 | 299 | 233 | 159 | 402 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity Group Production Ayrshires (AYR)
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(FRI) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 5534 | 6820 | 4.12 | 3.31 | 281 | 226 | 201 | 405 |
| 2007 | 6827 | 6761 | 4.09 | 3.34 | 277 | 226 | 195 | 402 |
| 2008 | 6037 | 6818 | 4.09 | 3.36 | 279 | 229 | 190 | 406 |
| 2009 | 5869 | 6775 | 4.09 | 3.35 | 277 | 227 | 185 | 405 |
| 2010 | 5372 | 6822 | 4.10 | 3.33 | 280 | 227 | 188 | 401 |
| 2011 | 5411 | 6965 | 4.07 | 3.33 | 283 | 232 | 184 | 401 |
| 2012 | 5688 | 6926 | 4.10 | 3.31 | 284 | 229 | 183 | 402 |
| 2013 | 6111 | 6642 | 4.13 | 3.30 | 274 | 219 | 188 | 399 |
| 2014 | 6545 | 6966 | 4.08 | 3.34 | 284 | 233 | 163 | 396 |
| 2015 | 6936 | 6889 | 4.06 | 3.36 | 280 | 232 | 164 | 394 |
| 2016 | 7509 | 6977 | 4.11 | 3.37 | 287 | 235 | 164 | 393 |
| 2017 | 7787 | 6815 | 4.16 | 3.33 | 283 | 227 | 154 | 392 |
| 2018 | 7978 | 6783 | 4.18 | 3.33 | 283 | 226 | 155 | 389 |
| 2019 | 8086 | 6777 | 4.14 | 3.37 | 281 | 228 | 153 | 389 |
| 2020 | 8293 | 6850 | 4.19 | 3.38 | 287 | 232 | 163 | 389 |
| 2021 | 8346 | 6883 | 4.22 | 3.36 | 291 | 231 | 156 | 389 |
| 2022 | 8516 | 6624 | 4.21 | 3.34 | 279 | 221 | 157 | 391 |
| 2023 | 8955 | 6559 | 4.21 | 3.35 | 276 | 220 | 150 | 387 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
PLI results are based on the latest evaluations from AHDB.
* Sires PLI averages weighted according to the number of daughters
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(BSW) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 844 | 7833 | 4.01 | 3.31 | 314 | 259 | 190 | 420 |
| 2007 | 1097 | 7851 | 4.01 | 3.32 | 315 | 261 | 206 | 419 |
| 2008 | 1180 | 7475 | 4.11 | 3.43 | 307 | 256 | 171 | 431 |
| 2009 | 1378 | 7387 | 4.05 | 3.45 | 299 | 255 | 174 | 421 |
| 2010 | 1618 | 7380 | 4.10 | 3.41 | 303 | 252 | 147 | 422 |
| 2011 | 1766 | 7519 | 4.15 | 3.40 | 312 | 255 | 158 | 418 |
| 2012 | 2056 | 7427 | 4.18 | 3.38 | 310 | 251 | 149 | 420 |
| 2013 | 2133 | 7137 | 4.17 | 3.38 | 298 | 241 | 174 | 418 |
| 2014 | 2161 | 7331 | 4.11 | 3.42 | 301 | 251 | 183 | 423 |
| 2015 | 2264 | 7261 | 4.06 | 3.45 | 295 | 250 | 189 | 425 |
| 2016 | 2302 | 7333 | 4.12 | 3.44 | 302 | 253 | 188 | 417 |
| 2017 | 2083 | 7257 | 4.10 | 3.43 | 297 | 249 | 187 | 417 |
| 2018 | 1845 | 7499 | 4.04 | 3.44 | 303 | 258 | 194 | 412 |
| 2019 | 1824 | 7544 | 3.99 | 3.45 | 301 | 261 | 167 | 419 |
| 2020 | 1917 | 7496 | 4.12 | 3.47 | 308 | 260 | 177 | 416 |
| 2021 | 1810 | 7842 | 4.14 | 3.49 | 325 | 274 | 181 | 419 |
| 2022 | 1743 | 7890 | 4.05 | 3.45 | 319 | 272 | 174 | 417 |
| 2023 | 1723 | 7846 | 4.05 | 3.47 | 318 | 272 | 157 | 417 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(GUE) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 2992 | 5598 | 4.62 | 3.52 | 259 | 197 | 182 | 417 |
| 2007 | 3372 | 5603 | 4.62 | 3.56 | 259 | 199 | 174 | 417 |
| 2008 | 3877 | 5693 | 4.66 | 3.57 | 265 | 203 | 189 | 425 |
| 2009 | 3201 | 5689 | 4.64 | 3.57 | 264 | 203 | 177 | 428 |
| 2010 | 2745 | 5927 | 4.71 | 3.61 | 279 | 210 | 184 | 420 |
| 2011 | 2793 | 5949 | 4.67 | 3.54 | 278 | 210 | 189 | 422 |
| 2012 | 2896 | 6013 | 4.72 | 3.52 | 284 | 212 | 180 | 422 |
| 2013 | 2853 | 5824 | 4.81 | 3.54 | 280 | 206 | 210 | 422 |
| 2014 | 2934 | 5884 | 4.81 | 3.57 | 283 | 210 | 190 | 419 |
| 2015 | 2799 | 5866 | 4.76 | 3.61 | 279 | 212 | 193 | 418 |
| 2016 | 2662 | 5770 | 4.79 | 3.59 | 277 | 207 | 209 | 415 |
| 2017 | 2420 | 5615 | 4.78 | 3.56 | 268 | 200 | 195 | 411 |
| 2018 | 2336 | 5625 | 4.80 | 3.55 | 270 | 200 | 186 | 415 |
| 2019 | 2093 | 5830 | 4.76 | 3.55 | 277 | 207 | 204 | 414 |
| 2020 | 1995 | 5831 | 4.88 | 3.58 | 285 | 209 | 178 | 415 |
| 2021 | 1970 | 5779 | 4.93 | 3.54 | 285 | 205 | 207 | 421 |
| 2022 | 1945 | 5684 | 4.86 | 3.52 | 276 | 200 | 206 | 413 |
| 2023 | 1649 | 5820 | 4.92 | 3.51 | 286 | 204 | 180 | 414 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
| Percentile | Milk (kg) | Fat % | Protein % | Fat (kg) | Protein (kg) | F+P (kg) | C Interval |
|---|---|---|---|---|---|---|---|
| 1% | 9652 | 6.30 | 4.13 | 494 | 337 | 841 | 321 |
| 2% | 9345 | 6.03 | 4.06 | 473 | 320 | 787 | 329 |
| 5% | 8361 | 5.84 | 3.95 | 425 | 293 | 715 | 335 |
| 10% | 7833 | 5.60 | 3.85 | 391 | 272 | 663 | 345 |
| 25% | 6751 | 5.29 | 3.69 | 333 | 238 | 568 | 361 |
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
PLI results are based on the latest evaluations from AHDB.
* Sires PLI averages weighted according to the number of daughters
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(HOL) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 424495 | 8719 | 3.91 | 3.18 | 341 | 277 | 211 | 425 |
| 2007 | 484073 | 8705 | 3.92 | 3.19 | 340 | 278 | 207 | 426 |
| 2008 | 487610 | 8765 | 3.93 | 3.20 | 344 | 280 | 206 | 431 |
| 2009 | 443740 | 8733 | 3.91 | 3.20 | 342 | 279 | 205 | 432 |
| 2010 | 404620 | 8868 | 3.92 | 3.18 | 348 | 282 | 200 | 428 |
| 2011 | 419120 | 9080 | 3.90 | 3.18 | 354 | 288 | 192 | 427 |
| 2012 | 453237 | 9091 | 3.93 | 3.16 | 357 | 287 | 198 | 423 |
| 2013 | 458819 | 8864 | 3.96 | 3.15 | 351 | 280 | 192 | 421 |
| 2014 | 465754 | 9239 | 3.91 | 3.17 | 361 | 293 | 186 | 418 |
| 2015 | 480468 | 9267 | 3.90 | 3.19 | 361 | 296 | 182 | 416 |
| 2016 | 471883 | 9305 | 3.95 | 3.20 | 367 | 297 | 170 | 409 |
| 2017 | 451524 | 9251 | 3.95 | 3.19 | 366 | 295 | 164 | 405 |
| 2018 | 438684 | 9455 | 3.96 | 3.20 | 375 | 303 | 161 | 404 |
| 2019 | 424882 | 9700 | 3.97 | 3.23 | 385 | 314 | 168 | 402 |
| 2020 | 402003 | 9808 | 4.04 | 3.25 | 396 | 319 | 171 | 403 |
| 2021 | 393817 | 9908 | 4.08 | 3.25 | 405 | 322 | 169 | 402 |
| 2022 | 386864 | 9806 | 4.10 | 3.25 | 403 | 319 | 163 | 399 |
| 2023 | 373706 | 9886 | 4.14 | 3.29 | 410 | 325 | 153 | 398 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
| Percentile | Milk (kg) | Fat % | Protein % | Fat (kg) | Protein (kg) | F+P (kg) | C Interval |
|---|---|---|---|---|---|---|---|
| 1% | 16203 | 5.66 | 3.95 | 668 | 518 | 1157 | 313 |
| 2% | 15423 | 5.45 | 3.86 | 634 | 497 | 1106 | 319 |
| 5% | 14267 | 5.17 | 3.74 | 584 | 462 | 1031 | 327 |
| 10% | 13225 | 4.93 | 3.63 | 542 | 430 | 963 | 334 |
| 25% | 11518 | 4.56 | 3.46 | 475 | 377 | 851 | 351 |
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(JIS) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 2805 | 4702 | 5.14 | 3.76 | 242 | 177 | 190 | 394 |
| 2007 | 2975 | 4636 | 5.22 | 3.78 | 242 | 175 | 202 | 399 |
| 2008 | 2650 | 4506 | 5.20 | 3.79 | 234 | 171 | 208 | 405 |
| 2009 | 2695 | 4632 | 5.21 | 3.81 | 241 | 176 | 206 | 411 |
| 2010 | 2577 | 4815 | 5.19 | 3.80 | 250 | 183 | 205 | 412 |
| 2011 | 2606 | 5003 | 5.13 | 3.75 | 257 | 188 | 193 | 404 |
| 2012 | 2655 | 5043 | 5.17 | 3.71 | 261 | 187 | 192 | 402 |
| 2013 | 2765 | 4943 | 5.25 | 3.71 | 259 | 183 | 185 | 405 |
| 2014 | 2715 | 5190 | 5.28 | 3.70 | 274 | 192 | 170 | 405 |
| 2015 | 2705 | 5334 | 5.24 | 3.72 | 280 | 198 | 177 | 403 |
| 2016 | 2654 | 5442 | 5.33 | 3.71 | 290 | 202 | 173 | 399 |
| 2017 | 2500 | 5543 | 5.28 | 3.73 | 293 | 207 | 155 | 406 |
| 2018 | 2601 | 5583 | 5.32 | 3.75 | 297 | 210 | 171 | 413 |
| 2019 | 2264 | 6071 | 5.41 | 3.77 | 328 | 229 | 161 | 405 |
| 2020 | 2048 | 6489 | 5.49 | 3.84 | 356 | 249 | 152 | 410 |
| 2021 | 2071 | 6834 | 5.53 | 3.87 | 378 | 264 | 158 | 407 |
| 2022 | 1994 | 6878 | 5.53 | 3.82 | 380 | 262 | 159 | 396 |
| 2023 | 1877 | 6988 | 5.61 | 3.81 | 392 | 266 | 153 | 402 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
| Percentile | Milk (kg) | Fat % | Protein % | Fat (kg) | Protein (kg) | F+P (kg) | C Interval |
|---|---|---|---|---|---|---|---|
| 1% | 10646 | 6.87 | 4.55 | 612 | 383 | 978 | 322 |
| 2% | 10288 | 6.81 | 4.48 | 587 | 372 | 951 | 326 |
| 5% | 9537 | 6.65 | 4.32 | 542 | 356 | 887 | 331 |
| 10% | 8994 | 6.43 | 4.20 | 511 | 336 | 843 | 338 |
| 25% | 8010 | 6.04 | 4.01 | 453 | 303 | 757 | 352 |
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
PLI results are based on the latest evaluations from AHDB.
* Sires PLI averages weighted according to the number of daughters
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(MON) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 256 | 7302 | 3.86 | 3.30 | 282 | 241 | 238 | 407 |
| 2007 | 291 | 7073 | 3.90 | 3.34 | 276 | 236 | 209 | 406 |
| 2008 | 395 | 6750 | 3.95 | 3.38 | 266 | 228 | 163 | 415 |
| 2009 | 571 | 6880 | 3.83 | 3.36 | 263 | 231 | 146 | 405 |
| 2010 | 684 | 6943 | 3.88 | 3.34 | 270 | 232 | 141 | 403 |
| 2011 | 1039 | 7063 | 3.88 | 3.34 | 274 | 236 | 149 | 405 |
| 2012 | 1402 | 7227 | 3.94 | 3.32 | 285 | 240 | 192 | 396 |
| 2013 | 1641 | 7021 | 3.85 | 3.30 | 271 | 232 | 180 | 403 |
| 2014 | 1830 | 7466 | 3.83 | 3.34 | 286 | 249 | 167 | 406 |
| 2015 | 2036 | 7293 | 3.81 | 3.37 | 278 | 246 | 190 | 402 |
| 2016 | 2219 | 7007 | 3.90 | 3.36 | 273 | 236 | 188 | 397 |
| 2017 | 2135 | 6774 | 3.94 | 3.35 | 267 | 227 | 175 | 395 |
| 2018 | 2070 | 7094 | 3.96 | 3.34 | 281 | 237 | 169 | 402 |
| 2019 | 2042 | 7380 | 3.93 | 3.37 | 290 | 249 | 177 | 398 |
| 2020 | 1815 | 7335 | 3.98 | 3.40 | 292 | 249 | 189 | 401 |
| 2021 | 1617 | 7565 | 3.99 | 3.37 | 302 | 255 | 193 | 404 |
| 2022 | 1612 | 7638 | 3.92 | 3.34 | 299 | 255 | 184 | 405 |
| 2023 | 1498 | 7572 | 3.92 | 3.35 | 297 | 253 | 161 | 399 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
| Percentile | Milk (kg) | Fat % | Protein % | Fat (kg) | Protein (kg) | F+P (kg) | C Interval |
|---|---|---|---|---|---|---|---|
| 1% | 11858 | 5.11 | 3.92 | 469 | 394 | 852 | 310 |
| 2% | 11387 | 4.97 | 3.83 | 443 | 376 | 807 | 316 |
| 5% | 10687 | 4.69 | 3.73 | 412 | 353 | 752 | 327 |
| 10% | 9883 | 4.56 | 3.65 | 384 | 332 | 709 | 336 |
| 25% | 8670 | 4.28 | 3.50 | 339 | 290 | 625 | 353 |
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
PLI results are based on the latest evaluations from AHDB.
* Sires PLI averages weighted according to the number of daughters
The breed specific results,shown here, include data from breed society registered animals (both fully and supplementary) giving confidence that the statistics shown are representative of the breed. Breed results are listed in bold type in tables and thick lines on charts.
The change over time reveals how much of the progress is due to improved genetic potential, nutrition and management practices.The number of Lactations show how many full qualifying lactations were completed during the year and used in the analysis of Milk, Fat & Protein results.Calving interval (CI) and Somatic Cell Count (SCC) statistics will use slightly fewer results.The count does not equate to the number of animals registered, nor include those who may have ended their lactation below 200 days. It does however give a consistent guide to the trend in lactations recorded.
| Year ended Sep | No. of Lactations#(JER) | Milk Yield (kg) | Fat % | Protein % | Fat Yield (kg) | Protein Yield (kg) | SCC ('000 cells/ml) | Calving Interval (days) |
|---|---|---|---|---|---|---|---|---|
| 2006 | 15490 | 5562 | 5.44 | 3.82 | 302 | 212 | 217 | 404 |
| 2007 | 18587 | 5618 | 5.38 | 3.84 | 302 | 216 | 210 | 406 |
| 2008 | 17987 | 5673 | 5.39 | 3.87 | 306 | 220 | 207 | 407 |
| 2009 | 17890 | 5638 | 5.40 | 3.89 | 305 | 219 | 201 | 408 |
| 2010 | 17925 | 5721 | 5.40 | 3.84 | 309 | 220 | 187 | 407 |
| 2011 | 17473 | 5862 | 5.36 | 3.84 | 314 | 225 | 183 | 405 |
| 2012 | 18336 | 5909 | 5.39 | 3.82 | 318 | 226 | 193 | 402 |
| 2013 | 18169 | 5710 | 5.47 | 3.80 | 312 | 217 | 192 | 405 |
| 2014 | 18504 | 6024 | 5.46 | 3.83 | 329 | 230 | 186 | 404 |
| 2015 | 18611 | 6021 | 5.42 | 3.85 | 327 | 232 | 185 | 402 |
| 2016 | 17724 | 6033 | 5.46 | 3.85 | 330 | 232 | 176 | 400 |
| 2017 | 16832 | 5948 | 5.44 | 3.86 | 323 | 230 | 164 | 400 |
| 2018 | 15997 | 6112 | 5.43 | 3.88 | 332 | 237 | 175 | 399 |
| 2019 | 15197 | 6336 | 5.42 | 3.89 | 343 | 246 | 183 | 400 |
| 2020 | 14557 | 6356 | 5.47 | 3.92 | 348 | 249 | 188 | 402 |
| 2021 | 14475 | 6383 | 5.52 | 3.94 | 353 | 252 | 182 | 402 |
| 2022 | 14103 | 6264 | 5.50 | 3.95 | 345 | 247 | 183 | 401 |
| 2023 | 13802 | 6303 | 5.52 | 3.96 | 348 | 249 | 171 | 401 |
# Derived from animals completing a 305-day Lactiation Period. Minimum of 200 days and 5 full tests. Registered animals only.
(Production level required to meet the top n% of breed. Derived from LP/305-day lactations completed 2023)
| Percentile | Milk (kg) | Fat % | Protein % | Fat (kg) | Protein (kg) | F+P (kg) | C Interval |
|---|---|---|---|---|---|---|---|
| 1% | 10466 | 7.56 | 4.79 | 594 | 412 | 990 | 315 |
| 2% | 9945 | 7.28 | 4.67 | 558 | 388 | 933 | 322 |
| 5% | 9107 | 6.81 | 4.52 | 509 | 359 | 859 | 330 |
| 10% | 8417 | 6.47 | 4.39 | 467 | 332 | 794 | 338 |
| 25% | 7330 | 5.97 | 4.17 | 403 | 290 | 691 | 354 |
Values have been derived independently for each trait, so should be read and treated separately. For example, an individual cow who falls into (say) the top 25% for one trait (such as Milk Yield), may be at a very different level for another trait (such as Fat %, Protein % or Calving Interval).
for all registered animals
Lactation Averages
annual trend
Parity group results are derived from all eligible lactation data within each age group.These show how first lactation heifers measure up against more mature animals, along with the relative performance of 7th, 8th and later lactation animals.These results may be particularly useful to those Farmers and Herd Owners wishing to benchmark their herd against the breed contemporaries.
The ‘Change between lactations’ column in the table below shows the increase (if positive) or decrease (if negative) in Milk Yield, between successive lactations. This indicates how much more (or less) milk might be expected from each of the different age groups in a herd and acts as a very broad guide to the effects of maturity. Individual animals may of course vary considerably from this pattern as they age themselves.
# Derived from animals completing a lactation period (305-days) within the year from October to Seprtember. Minimum 200 days and 5 full tests.
(days since previous calving)
The genetic trend for the population shows the mean PLI of females per year of birth, plotted alongside the mean PLI of their sires, weighted by daughter numbers. The PLI was calculated in the latest year shown and applied to all animals dated back to the year 2000. This allows an objective comparison across time for all animals in the data set.
Mean PLI of females by year of birth, with mean PLI of their sires *
PLI results are based on the latest evaluations from AHDB.
* Sires PLI averages weighted according to the number of daughters
