Genetic parameters for stayability to consecutive calvings in Zebu cattle
نویسندگان
چکیده
منابع مشابه
Estimates of genetic parameters for stayability to consecutive calvings of Canadian Simmentals by random regression models.
Stayability to consecutive calvings was selected as a measure of cow longevity in the Canadian Simmental population. Calving performance data on 188,579 cows and culling information from the Total Herd Reporting System were used to determine whether a cow stayed in a herd for her second and later (up to the eighth) calvings, given that she had calved as 2 yr old. Binary records (n = 1,164,319) ...
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A. Guillén Trujillo1, D. Guerra Iglesias2, N. Ávila Serrano3, Dianelys González-Peña1, A. Palacios1, R. de Luna1 and J.L. Espinoza1 1Universidad del Mar, Puerto Escondido, Oaxaca, C.P. 71980, México 2Departamento de Genética, Centro de Investigaciones para el Mejoramiento Animal de la Ganadería Tropical, Ave. 101 No.6214 e/ 62 y 100, Loma de Tierra, Cotorro, La Habana, Cuba Departamento de Zoot...
متن کاملGenetic parameters for stayability in Murrah buffaloes.
In order to contribute to the breeding programmes of Asian water buffalo, the aim of this study was to analyse the influence of genetic effects in the stayability of Murrah dairy buffaloes. The stayability trait (ST) was defined as the female's ability to stay in the herd for one (ST1), two (ST2), three (ST3), four (ST4), five (ST5) or six years (ST6) after the first calving. The same trait was...
متن کاملGenetic parameters for stayability, stayability at calving, and stayability at weaning to specified ages for Hereford cows.
Genetic parameters for stayability to six ages (ST1, . . ., ST6), for five measures of stayability to calving (SC2, . . ., SC6), and for five measures of stayability to weaning (SW2, . . ., SW6), were estimated using records of 2,019 Hereford cows collected from 1964 to 1979 from a selection experiment with a control line and three lines selected for weaning weight, yearling weight, and an inde...
متن کاملGenomic analysis of stayability in Nellore cattle
Stayability, which can be defined as the probability of a cow calving at a certain age when given the opportunity, is an important reproductive trait in beef cattle because it is directly related to herd profitability. The objective of this study was to estimate genetic parameters and to identify possible genomic regions associated with the phenotypic expression of stayability in Nellore cows. ...
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ژورنال
عنوان ژورنال: Animal
سال: 2018
ISSN: 1751-7311
DOI: 10.1017/s1751731117003457