Genetic relationship among reproductive traits in Nellore cattle
نویسندگان
چکیده
منابع مشابه
Genetic relationship between growth and reproductive traits in Nellore cattle.
The objective of this study was to evaluate the genetic relationship between postweaning weight gain (PWG), heifer pregnancy (HP), scrotal circumference (SC) at 18 months of age, stayability at 6 years of age (STAY) and finishing visual score at 18 months of age (PREC), and to determine the potential of these traits as selection criteria for the genetic improvement of growth and reproduction in...
متن کاملGenetic parameters for productive life traits and reproductive efficiency traits at 6 years in Nellore cattle.
The objective of the present study was to estimate (co)variance components for length of productive life (LPL) and some alternative reproductive traits of 6-year-old Nellore cattle. The data set contained 57,410 records for age at first calving from Nellore females and was edited to remove animal records with uncertain paternity and cows with just one piece of calving information. Only animals ...
متن کاملGenetic correlations between mature cow weight and productive and reproductive traits in Nellore cattle.
We investigated genetic associations between mature cow weight (MW) and weaning weight (WW), yearling weight (YW), weight gain from birth to weaning (GBW), weight gain from weaning to yearling (GWY), weaning hip height (WHH), yearling hip height (YHH), scrotal circumference (SC), and age at first calving (AFC). Data from 127,104 Nellore animals born between 1993 and 2006, belonging to Agr...
متن کاملGenetic parameters and environmental effects on temperament score and reproductive traits of Nellore cattle.
Animal temperament is a trait of economic relevance and its use as a selection criterion requires the identification of environmental factors that influence this trait, as well as the estimation of its genetic variability and interrelationship with other traits. The objectives of this study were to evaluate the effect of the covariates dam age at calving (ADC), long yearling age (YA) and long y...
متن کاملGenetic association of growth traits with carcass and meat traits in Nellore cattle.
The aim of this study was to estimate genetic and phenotypic associations of growth traits with carcass and meat traits in Nellore cattle. Data from male and female animals were used for weaning weight (WW; N = 241,416), yearling weight (YW, N = 126,596), weight gain from weaning to yearling (GWY, N = 78,687), and yearling hip height (YHH, N = 90,720), respectively; 877 male animals were used f...
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ژورنال
عنوان ژورنال: Animal
سال: 2015
ISSN: 1751-7311
DOI: 10.1017/s1751731114003103