Zobrazeno 1 - 10
of 303
pro vyhledávání: '"Stayability"'
Publikováno v:
Journal of Dairy Science, Vol 106, Iss 7, Pp 4825-4835 (2023)
ABSTRACT: Greater longevity is associated with lower replacement costs, higher average milk production, and fewer replacement heifers needed. Longevity data are obtained late in life, and for this reason stayability, defined as the probability of sur
Externí odkaz:
https://doaj.org/article/27d4d691d07b4a04aff52f1f99368b58
Effect of ewe birth litter size and estimation of genetic parameters on ewe reproductive life traits
Publikováno v:
Animal, Vol 17, Iss 8, Pp 100900- (2023)
Ewe lifetime productivity has economic implications for producers because shorter lifetime productivity results in less profit. Productive years of ewes from extensive, range-based systems of the United States West are generally less than ewes from m
Externí odkaz:
https://doaj.org/article/303e53600b5e44a6a676fe072f0c72c7
Publikováno v:
Indian Journal of Animal Sciences, Vol 92, Iss 12 (2022)
In present study, lactation specific demographic analysis was carried out on 1728 records of Jersey crossbred cows maintained at Eastern Regional Station (ERS), ICAR-NDRI, Kalyani, West Bengal over a period of 40 years (1980-2019). The survival rate
Externí odkaz:
https://doaj.org/article/0094c6bf47a64847a782c8286d0045b1
Publikováno v:
Animal Bioscience, Vol 34, Iss 1, Pp 20-25 (2021)
Objective The objective of the study was to investigate the possibility of utilizing an early litter size trait as an indirect selection trait for longevity and to estimate genetic parameters between sow stayability and litter size at different parit
Externí odkaz:
https://doaj.org/article/bbd13fded5964ce081dc5c90f3817805
Publikováno v:
Asian-Australasian Journal of Animal Sciences, Vol 32, Iss 8, Pp 1077-1083 (2019)
Objective Sow longevity is important for efficient and profitable pig farming. Recently, there has been an increasing interest in social genetic effect (SGE) of pigs on stress-tolerance and behavior. The present study aimed to estimate genetic correl
Externí odkaz:
https://doaj.org/article/15235037aab34a858aa9b24a6abacc3e
Publikováno v:
Animal, Vol 15, Iss 5, Pp 100204- (2021)
Taking into account functional traits in the breeding practice should lead to a longer productive life of cows. However, despite the increased contribution of these traits in bull selection indices, their daughters are frequently culled as early as t
Externí odkaz:
https://doaj.org/article/c5d1034994bb446fb0472f3b50bd93ef
Akademický článek
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Autor:
Amir Gil Sessim, Tamara Esteves de Oliveira, Fredy Andrey López-González, David Santos de Freitas, Júlio Otávio Jardim Barcellos
Publikováno v:
Frontiers in Veterinary Science, Vol 7 (2020)
The bioeconomic efficiency of cow-calf systems was compared by a deterministic dynamic simulation. The simulation model considered stable cow-calf systems differentiated by the maximum age for culling cows, lifetime, culled at 4–13 years old. The n
Externí odkaz:
https://doaj.org/article/18a6ef11a2d24f2ab1e01b722b619c76
Autor:
Byanka Bueno Soares, Ludmilla Costa Brunes, Fernando Sebastian Baldi, Adriana Santana do Carmo, Marcelo Gonçalves Narciso, Valentina Sanches Magnabosco, Roberto Daniel Sainz, Cláudio Ulhoa Magnabosco
Publikováno v:
Ciência Animal Brasileira, Volume: 24, Article number: e-75081, Published: 08 MAY 2023
The use of morphological traits assessed using visual scores as indirect selection criteria in cattle has the advantage of evaluating young animals regarding potential productive and reproductive performance. This enables breeders to make earlier dec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::53f1e8ad04266b73db6db4d1c663bc44
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1809-68912023000100412&lng=en&tlng=en
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1809-68912023000100412&lng=en&tlng=en
Publikováno v:
Animals, Vol 11, Iss 3, p 800 (2021)
This study aimed to evaluate the impact of different proportions (i.e., 20%, 40%, 60% and 80%) of censored (CEN) or penalized (PEN) data in the prediction of breeding values (EBVs), genetic parameters, and computational efficiency for two longevity i
Externí odkaz:
https://doaj.org/article/2751547f39624caca61d1449ff3f9977