Retrieved from Volume 22, No. 4, 2018
Pages 118 -122
Shevchuk, N.
(2018).
Productive Longevity of Families In the Ukrainian Red Dairy Breed.
Ukrainian Black Sea Region Agrarian Science,
22(4),
118-122.
DOI: 10.31521/2313-092X/2018-4(100)-18
Abstract
It has been given the results of the estimation productive longevity of highly productive families in the Ukrainian Red Dairy Breed. Such indicators were estimated as the age at the first calving, life expectancy, economic use and lactation, the coefficient of economic use, the number of lactations, lifetime milk yield, the content of fat in milk and milk fat, milk yield for one day of life and economic use. It has been established that the best signs of longevity and lifelong productivity in the Ukrainian Red Dairy Breed were in the families of Buystra 1988, Luna 610 and Purga 5842. The research estimated the level of phenotypic variability of selection signs of productive longevity of the Ukrainian Red Dairy Breed cow families.
Keywords:
breed, selection, family, cows, sign, lifetime productivity, longevity