An Analysis of the Dependency Structure between a Gilt's Prebreeding and Reproductive Traits. I. Phenotypic and Genetic Correlations

An Analysis of the Dependency Structure between a Gilt's Prebreeding and Reproductive Traits. Ii. Principal Component Analysis

برآورد پارامترهای ژنتیکی برخی از اختلالات تولید مثلی و ارتباط آنها با صفات تولیدی در گاوهای هلشتاین ایران

     In this study, estimation of genetic parameters were performed for some reproductive disorders (retained placenta, repetitious abortion and infertility) and genetic and phenotypic correlations between these traits with milk, fat and protein yield.  The obtained data were collected from 63403 Holstein cows on Animal Breeding Center of Iran (from 2001 to 2013). After editing the data, estima...

Estimation of Genetic Parameters for Growth and Body Measurement Traits in Different Ages in Iranian Makuei Sheep

The present study aimed to estimate heritability, genetic and phenotypic correlations between body weight and body measurement traits in Iranian Makuei sheep. The used data were collected from 1989 to 2012 at Makuei Sheep Breeding Station in Maku (West Azarbayjan province). The data included body weight and five body measurement traits (body length (BL), heart girth (HG), withers height (WH), r...

برآورد فراسنجه‌های ژنتیکی صفت لنگش و ارتباط آن با صفات تولید شیر در گاوهای هلشتاین ایران

In this study, estimation of genetic parameters of Lameness and genetic and phenotypic correlations between Lameness and milk, fat and protein yield were performed. The data obtained from 63403 Holstein cows were collected from the Animal Breeding Center of Iran between 2001 to 2013 Estimation of genetic parameters for lameness was performed by univariate animal and Threshold models. Also, esti...

Estimation of Genetic and Phenotypic Parametersof Some Reproductive Traits of Black Bengal Does

The objective of this study was to evaluate genetic and phenotypic parameters for some reproductive traits of Black Bengal does. Genetic parameters were estimated by Residual Maximum Likelihood procedure, fitting an animal model ignoring maternal genetic or permanent environmental effects. The least-squares means of litter size at birth (LSB), litter size at weaning (LSW), litter weight at birt...