Estimation of genetic parameters and genetic trends for milk yield traits in Jamunapari goats in semiarid tropics

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Estimation of genetic parameters and genetic trends for milk yield traits in Jamunapari goats in semiarid tropics

The Jamunapari goats are reared as dairy animals in semi-arid conditions, therefore it is necessary to evaluate the genetic potential for the genetic improvement of milk production traits. The data comprised of 2217 phenotypic records for milk yield at 90 days (MY90) and 140 days (MY140), total milk yield (TMY) and lactation length (LL) obtained from the progeny of 173 sires and 446 dams during...

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The main aim of this research was to estimate the genetic and phenotypic parameters for productive and reproductive traits of Esfahan native chickens. Traits included body weights at hatch (BW1), 8 weeks of age (BW8), 12 weeks of age (BW12), and at sexual maturity (WSM)], age at sex maturity (ASM), egg number (EN), average egg weight (AEW) in the first 12 weeks of production, and egg production...

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estimation of genetic parameters and trends for some economic traits in kermani sheep

the objective of the present study was to estimate genetic parameters and genetic trends of growth traits , fleece weight and reproductive traits. data collected from 1993 to 2007 by the kermani breeding station were analyzed .traits were included birth weight (bw, n=2614), 3 months weight (3mw,n=2312), 6 months weight (6mw, n=1890), 9 months weight (9mw,n=1380) and 12 months weight (12mw,n=105...

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Estimation of Genetic Parameters for Lactation Curve Traits in Holstein Dairy Cows in Iran

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ژورنال

عنوان ژورنال: Small Ruminant Research

سال: 2017

ISSN: 0921-4488

DOI: 10.1016/j.smallrumres.2017.05.004