This study aimed to compare different methods of genomic evaluation using the criteria of correlation (ρ), regression (β), mean square error (MSE), and selection effectiveness (SE). For this purpose, nine different scenarios were designed based on different levels of heritability (0.1, 0.3, and...

The present study aimed to estimate the inbreeding coefficient and its impact on the economically important traits in West Azerbaijan native fowls. In this research, 61563 records collected from 1994 to 2018 (21 generations) from the breeding station of West Azerbaijan native fowls was used. The...

Uneven distribution of recessive alleles among founder animals genomes leads to the heterogeneity of inbreeding depression among their descendants. In this study, pedigree information, birth weight, and weaning weight records of 4032 Baluchi sheep collected between 1989 to 2017 at the Baluchi sheep ...

To study the reaction of udder mRNA abundance of genes related to nuclear erythroid 2-related factor 2 (Nrf2) to an intramammary lipopolysaccharide (LPS) challenge with changes in blood insulin and metabolites levels, 24 dairy cows were used. Treatments included insulin infusion (HypoG, n=5),...

The present study aimed to determine the best mathematical model to describe the growth curve of dromedary camels. For this purpose, the data recorded between 1990 and 2018 in the National Research and Development Station on Dromedary Camel located in Bafgh, Yazd province, were used. The records...

The present descriptive-survey research was conducted to investigate attitudes of fatteners about the factors affecting the development of male calf fattening units in Guilan province. The data of the present study were collected through a questionnaire and its validity was controlled by 10...

Introduction: The main purpose of a breeding program is to increase the genetic capacity of farm animals for important economic traits. Although the success of genetic selection to increase milk production in dairy cows is quite obvious, the fertility of herds has decreased. The heritability of...

Introduction: Organic acids are one of the alternatives to antibiotic growth promoters. They have beneficial effects on poultry performance and gastrointestinal microbial balance. In general, the addition of organic acids to the diet lowers the pH of the diet and gastrointestinal tract, stimulates...

Introduction: Increasing the growth rate has made broilers susceptible to environmental stresses and has reduced the bird's ability to confront oxidative stresses and has increased the incidence of metabolic diseases, especially ascites syndrome. Oxidative stress is caused by an imbalance between...

Introduction: Food additives are a group of different substances that are used for different purposes in poultry diets. Antibiotics are a group of food additives that have been used for many years in the poultry industry to improve performance. Numerous studies have shown that the use of...