Zobrazeno 1 - 10
of 823
pro vyhledávání: '"first calving"'
Autor:
Ahmet Akyol, Hüseyin Erdem
Publikováno v:
Turkish Journal of Agriculture: Food Science and Technology, Vol 12, Iss 10, Pp 1659-1667 (2024)
Numerous in-depth studies have described the fertility traits, growth performance and milk yield traits of dairy animals, which are considered indicators of welfare, but there are limited studies examining these traits within the framework of cause-e
Externí odkaz:
https://doaj.org/article/1ac1d3ca565a40a5bcc9140f7d55b89e
Autor:
T.P. Melo, A.K. Zwirtes, A.A. Silva, S.F. Lázaro, H.R. Oliveira, K.R. Silveira, J.C.G. Santos, W.B.F. Andrade, S. Kluska, L.A. Evangelho, H.N. Oliveira, H. Tonhati
Publikováno v:
Journal of Dairy Science, Vol 107, Iss 10, Pp 8130-8140 (2024)
ABSTRACT: Missing pedigrees may produce bias in genomic evaluations. Thus, strategies to deal with this problem have been proposed as using unknown parent groups (UPG) or truncated pedigrees. The aim of this study was to investigate the impact of mod
Externí odkaz:
https://doaj.org/article/e0945e36012b4a49ba95b2392df65abc
Autor:
Atakan Koç, Mehmet Öner
Publikováno v:
Turkish Journal of Agriculture: Food Science and Technology, Vol 11, Iss 12, Pp 2339-2346 (2023)
The aim of this study was to determine the fertility, herd life and milk yield characteristics of Simmental (SIM) cows of Austrian origin, which have increased the interest of cattle breeders in Türkiye in recent years. From the records of the farm
Externí odkaz:
https://doaj.org/article/a43ffc656d294e87aea9d1dd958f319e
Publikováno v:
Veterinary Medicine and Science, Vol 9, Iss 6, Pp 2820-2834 (2023)
Abstract Background Breeding objectives are designed to achieve targeted dairy cow production goals, which can be affected by production type, farmer preferences, environmental factors and genetic factors individually or in combination. Breeding prac
Externí odkaz:
https://doaj.org/article/9f93c46c9c2a40d296411f5f482ce0e6
Publikováno v:
The Journal of Reproduction and Development, Vol 69, Iss 6, Pp 291-297 (2023)
Accelerating age at first calving (AFC) is a strategy for sustainable dairy farming, whereas the impact of a reduction in AFC on long-term performance remains unclear. In this study, longevity and milk productivity until the end of the third lactatio
Externí odkaz:
https://doaj.org/article/531694d16073480eac4b2e93b30dcb15
Publikováno v:
Italian Journal of Animal Science, Vol 21, Iss 1, Pp 324-330 (2022)
The aim of this study is to determine the effect of first-calving age (FCA) on yield parameters and productive life in dairy farms using a robotic milking system in Turkey. The cows (n = 1579) were divided into five groups (24, 25, 26, 27, 28 months
Externí odkaz:
https://doaj.org/article/f4074de18370457c8dd128d1a7018339
Akademický článek
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Akademický článek
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Publikováno v:
Agraarteadus, Vol 33, Iss 1, Pp 146-153 (2022)
The retrospective analysis involved 562 Holstein cows, 545 Ukrainian Black-and-White dairy cows and 100 Ukrainian Red-and-White dairy cows in Breeding Station Terezyne, Kyiv region. The influence of age at first calving and first lactation milk yield
Externí odkaz:
https://doaj.org/article/5823af2c60174ee0a4fd9fa5fcab1732