a total of 2000 records of egg quality of 746 birds and body weight data from 17th generation of fars native fowl breeding station were used to estimate the genetic parameters of egg quality and body weight traits. six univariate animal models with different random effects were fitted for each trait. a model with direct additive genetic and maternal permanent environmental effects was the most ...

Background: Artificial intelligence (AI) is transforming all spheres of life and it has the potential to revolutionize animal husbandry as well. In this regard, an attempt was made compare two AI techniques for predicting 12-month body weights animals; viz. Principal Component regression (PCR) Ordinary Least Squares (OLS) datasets Corriedale sheep spanning 11 years. Methods: PCR models were tra...

ABSTRACT Tambaqui (Colossoma macropomum ) is one of the highly produced freshwater fish in Brazilian farming. However, its production efficiency associated with refinement diet formulations limited due to a lack information on nutritional requirements for certain essential amino acids such as valine. This study was designed estimate valine requirement tambaqui having different body weights. A t...