In:
The Agrarian Scientific Journal, FSBEU HE Saratov SAU, , No. 12 ( 2019-12-15), p. 74-77
Abstract:
The mean group values of phenotypes of the daughters of each bull were determined and taken into account for the milk yield for 305 days of maximum lactation, longevity (the number of full lactations) and life-long milk yield. As the source material, we used the data of pedigree cows of the black-motley breed of SPK Kolginsky. They were estimated 7,468 heads of cows that were left between 2003 and 2018. The highest longevity and the lifetime milk yield were characterized by the daughters of bulls of the line M. Chiftein 95679. An average of 30556.64 kg of milk was received from them for 4.73 lactations. It exceeded the average value in the sample: by longevity – by 0.24 lactation (5.3%), by life-long milk yield – by 351.01 kg (1.1%). In the Vis Beck Aydial 1013415line, in order to increase the period of productive use of cows, the bull Auction 7318 should be preferred. Among bulls of the Reflex Sovering 198998 line, the breeding material of the bull Solo 62181522 should be used more widely. In the Montvik Chiftein95679 line, the best combination of longevity and lifetime productivity indicators were in daughter of the bull Emos 61280669.
Type of Medium:
Online Resource
ISSN:
2587-9944
,
2313-8432
DOI:
10.28983/asj.y2019i12
DOI:
10.28983/asj.y2019i12pp74-77
Language:
Unknown
Publisher:
FSBEU HE Saratov SAU
Publication Date:
2019