Genetic parameters were estimated for production traits and primary antibody response (Ab)
against Newcastle diseases virus (NDV) vaccine among two Tanzania chicken ecotypes viz …

Upcoming nesting behaviour traits, such as the exact oviposition time or the time spent in the
nest, have a direct impact on economically relevant aspects. Hens which stay for a long time …

The objectives of this paper were to identify the phenotypic egg-laying patterns in a White
Leghorn line mainly selected for egg production, to estimate genetic parameters of traits …

Background There is growing interest in using genetic selection to obtain more resilient farm
animals (ie that are minimally affected by disturbances or rapidly recover from them). The …

The random regression model (RRM) methodology was applied to the estimation of genetic
parameters for cumulative egg numbers and monthly egg production in a broiler dam line …

This study was conducted in the fields of the Department of Animal Production-College of
Agriculture at Kirkuk University for the period from 6/14/2021 to 7/30/2022. 750 quail chicks …

This study was conducted to determine the genetic parameters of internal and external
quality traits of Japanese quail eggs. Two statistical models were used in the calculation of …

A follow-up, comparative study was designed for the description of differences between two
divergent laying hen strains, a Leghorn type and a medium heavy body (MHB) genotype (Hy …

1. The study was conducted to estimate the heritability, genetic correlations and breeding
values of laying hens based on individual records and group mean records. 2. Records of …

Data on performance of animals are, in several situations, collected at the group rather than
individual level. Genetic evaluations in farm animals, however, are based on phenotypic …