Hunt: Selecting Holsteln-Frieslan Sires 



371 



requirement of the heifer at the age of 

 freshening, or in this case, 



500 lbs. fat X 360 requirement for mature cow 



250.5 requirement for heifer at 2 years 



= 718.4 lbs. fat 



or the amount of butterfat this heifer 

 would produce if she were mature, 

 handled under similar conditions and 

 had not been injured before she reached 

 maturity. This method of estimating 

 records may not be absolutely correct, 

 but that point will not be debated. 

 This much can be said in its defense: 

 It is based on the requirements of 

 the American Jersey Cattle Club, 

 the Guernsey Breeders' Association, 

 the Ayrshire Breeders' Association, 

 and the Holstein-Friesian Association 

 of America for admittance for yearly 

 records. 



Table 1: Advanced Registry Requirements for 600 lbs. Standard 



Table II: 1201 Cows Classified as to Equivalent Production, 

 With Number in Each Group and Average Per Cent 



of Fat 

 (Data do not include records found in Volume 30) 



The standards of 600, 800 and 1000 

 pounds of butterfat were selected 

 because any cow producing over 600 

 pounds or its equivalent is a high pro- 

 ducing cow and her producing qualities 

 have been highly developed. The sire 

 of five or more 600 pound daughters 

 shows exceptional prepotency for pro- 

 ducing high producing daughters. The 

 800 pound or its equivalent group 

 was made to show exceptionally high 

 production. Any cow in this list is a 

 great cow, and any sire with two or more 

 800 pound daughters must transmit 

 exceptional producing qualities. The 

 1000 pound or its equivalent group are 

 composed of the breed's greatest pro- 

 ducing cows. Any sire with a 1000 

 pound daughter should be considered 

 among the breed's best sires. The 

 divisions were made to determne the 

 sires that produced the greatest pro- 

 ducing daughters and the blood lines 

 of these great sires. 



From Table II it will be noted 

 that the number of animals in each 



Fat Production 



Number of cows . 

 Average % fat. . . 

 Maximum % fat. 

 Minimum % fat. 



600 

 to 

 700 

 lbs. 

 637 

 3.44 

 4.40 

 2.57 



group, except the one over 1100 pounds 

 fat or its equivalent, has sufficient num- 

 bers to give definite results. Beginning 

 with the average per cent fat for the 

 cows with a production of from 600 

 to 700 pounds fat, or its equivalent, 

 3.44 per cent, it gradually increases, 

 except the cows in the 700-800 pound 

 fat class, and the same as that for the 

 cows in the 800-900 pound fat class, 

 and the same as that for the cows in 

 the 900-1000 pound class. The maxi- 

 mum test, 4.64 per cent fat, was for a 

 cow producing over 1000 pounds fat or 

 its equivalent. The minimum test of 

 2.56 percent fat was the lowest of any 

 really high producing cow and it may 

 be safely said that it is practically 

 impossible for a cow to make over 1000 

 pounds fat or its equivalent unless the 

 average test is at least 3 per cent fat. 



Table III gives a list of sires having 

 one or more equivalent to 1000 pound 

 butterfat daughters, there being 52 

 daughters that will qualify for this 

 list. King Segis Pontiac Count with 

 29 Advanced Registry daughters, is 

 the sire of five daughters with a yearly 

 production of 1000 pounds butterfat or 

 its equivalent, a most wonderful show- 

 ing for his ability to transmit extremely 

 high production. King Hengerveld 

 Aaggie Payne, with 34 Advanced 

 Registry daughters, has three 1000 

 pound daughters. Six other sires have 

 two daughters each, and the re- 

 maining thirty two 100 pound daughters 

 each have a different sire, bringing out 

 the fact that no one particular sire 

 has produced all the extremely high 

 record cows, and that of the total 52 

 more than half of them are sired by 

 animals with only one extremely high 

 record daughter. 



While the blood lines of these animals 

 are very closely related , by studying the 



