Breeding values and actual daughter productions in figures

category Breeding
8
Feb
2021
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Production data

Statistics addicts can feast their eyes on these tables: they present the actual production figures of the most important and most popular bulls. A lower limit of at least 75 milk records per lactation applies.

Transmission of +750 for kilos of milk, –0.10% for fat and +45 for kilos of protein. CRV publishes new breeding values for bulls three times a year. These breeding values are based on hard figures. Delta Potter P, for instance, owes his high breeding value for protein to the performance of his offspring. And L W Crescendo’s daughters ensure their sire is known for the generous quantities of milk he passes on.

These raw, uncorrected production figures form the basis of the estimated breeding values. The rule for all bulls is that daughter productions are only published if at least 75 milk records are available per lactation. Generally speaking, the more daughters a bull has, the closer the actual production figures correspond to the breeding values. Take Bouw Rocky and Apina Malcolm, for example. The duo shows a clearly different inheritance pattern for kilograms of milk. On paper Malcolm passes on around 1100 kilos more than Rocky. Half of that, about 550 kg, should be apparent in the milk production of his daughters. The practice confirms this quite well: as heifers, Rocky daughters produce 8011 kg and Malcolm’s daughters nearly 8500 kg.

Name bull Birth year Breed. val. kg milk 305 day prod. as heifer (kg m.)
Bouw Rocky 2012 +196 8011
Apina Malcolm rf 2012 +1291 8499
Topspeed Kodak 2005 +204 7359
Delta Maiko 2014 +293 7770

Table 1 – Comparison of breeding value for milk production and actual daughter productions for a number of bulls

 

Uncorrected figures

However the raw, uncorrected production figures and breeding values do not always dovetail so neatly. Sometimes, for example, a particular bull has been mainly used on high-productive cows and/or farms. Variations in the age at calving, or the year of calving, can also lead to differences between raw production figures and breeding values. To avoid creating a distorted picture, this effect is factored into the estimated breeding value.

 

Differences between breeding values and actual production figures

Sometimes daughters of bulls with almost equal breeding values for milk production can still have a very different production average. The bull’s year of birth and the period when the daughters started lactating can also play a role in the imbalance between breeding values and actual production figures. Kodak and Maiko – with an age difference of nine years – have a virtually identical breeding value for kilos of milk. Despite this, production of Maiko’s daughters in their first milk record is more than 400 kg higher than Kodak’s daughters. This could be linked to the different year of birth. When Kodak’s daughters started lactating, the national production figure was lower than now.

 

Milk, fat and protein in 305 days
List. No. (Lactation) Number of lactations kg milk %fat % protein kg fat kg protein
Double W Ranger
1st list 460 8.010 4,36 3,56 349 285
Delta Magister
1st list 2.813 8.605 4,15 3,53 357 304
Bouw Rocky
1st list 9.299 8.011 4,32 3,53 346 283
2nd list 4.190 9.650 4,34 3,61 419 348
3e lijst 717 10.573 4,31 3,58 456 378
4th list 198 10.637 4,34 3,58 462 381
Delta Jupiler
1st list 1.272 8.472 4,07 3,51 345 297
Weelder Empire
1st list 427 8.231 4,31 3,55 355 292
Vero Startrek
1st list 8.035 8.595 4,21 3,54 362 304
2nd list 3.678 9.726 4,30 3,67 418 357
3rd 250 10.223 4,31 3,67 441 375
Batenburg G. Stellando rf
1st list 37.201 8.220 4,32 3,55 355 292
2nd list 23.786 9.514 4,34 3,64 413 346
3rd 10.836 10.164 4,35 3,58 442 364
4th list 5.016 10.240 4,38 3,56 448 365
5th list 968 10.187 4,36 3,56 444 363
Horst Allard rf
1st list 180 7.933 4,41 3,67 350 291
2nd list 147 9.410 4,46 3,77 420 355
3rd 113 9.990 4,54 3,74 454 374
Delta Atlantic
1st list 59.319 7.948 4,21 3,59 335 285
2nd list 44.378 9.536 4,22 3,62 402 345
3rd 27.547 10.152 4,27 3,58 433 363
4th list 12.206 10.305 4,32 3,57 445 368
5th list 3.103 10.158 4,35 3,57 442 363
Delta Solero
1st list 2.320 7.953 4,30 3,53 342 281
2nd list 770 9.396 4,36 3,63 410 341
3rd 455 10.317 4,38 3,61 452 372
4th list 300 10.365 4,46 3,61 462 374
5th list 100 10.956 4,38 3,62 480 397
Delta Rosebud
1st list 2.545 7.843 4,31 3,61 338 283
Kingfarm Holsteins Anreli
1st list 250 8.008 4,37 3,57 350 286
Delta Potter P
1st list 220 7.902 4,39 3,71 347 293
2nd list 188 8.906 4,54 3,85 404 343
3rd 117 9.718 4,50 3,80 437 369
Bruchter Passe
1st list 1.367 7.817 4,40 3,58 344 280
2nd list 532 9.307 4,38 3,66 408 341
3rd 148 9.900 4,43 3,66 439 362
4th list 110 10.088 4,46 3,61 450 364
Delta Maiko
1st list 496 7.770 4,57 3,67 355 285
2nd list 355 8.940 4,57 3,75 409 335
Flavio
1st list 129 6.556 4,10 3,51 269 230
2nd list 91 7.862 4,22 3,59 332 282

Table 2: Uncorrected 305-day milk records of daughters of the most popular bulls in the Netherlands, ranked by category per number of first inseminations in the 2019-2020 financial year.