Comparison of linear and threshold models for estimation genetic and phenotypic parameters of success of conception at first service and inseminations to conception in Holstein Cattles in East Azarbayjan province
Journal Title: International journal of Advanced Biological and Biomedical Research - Year 2014, Vol 2, Issue 5
Abstract
In this research genetic and phenotypic parameters were estimated using linear and threshold models, for reproductive traits, data from 6 large industrial dairy herd of East Azerbaijan province collected by Agriculture Jihad Organization during 10 years (2001-2010). Best linear unbiased predictions of traits breeding values were estimated using Restricted Maximum Likelihood method by WOMBAT software. Marginal posterior distributions under Bayesian approach via Gibbs sampling algorithm were estimated using repeatability analysis under animal model by Thrgibbs1f90software, in threshold model. Heritability’s of inseminations to conception and success at first insemination traits were estimated 0.078±0.014 and 0.068±0.013 respectively, in linear model and in threshold model, the means of posterior distributions of heritability’s were estimated 0.07±0.0001 and 0.136±0.0022 respectively. The research results showed that although the amount of heritability’s for reproductive traits are low using linear and threshold models, but using threshold model in contrast with linear model cause increasing accuracy of evaluation and increasing rate of response to selection.
Authors and Affiliations
Jafar Jamdar| M.Sc. Genetic and Animal Breeding, University of Zanjan, Iran, Morad Pasha Eskandarinasab| Assistant Department of Animal Sciences, University of Zanjan, Iran
Keywords
Related Articles
- EP ID EP13246
- DOI -
- Views 313
- Downloads 14
Iodixanol as a Gastrointestinal Contrast Media in the New Zealand White Rabbit
Determination of normal gastric emptying time and small intestinal transit time are useful in detecting gastrointestinal motility disorders and partial obstructions of the pylorus or small intestine. This study was con...
Effects of chlorpheniramine (histamine H1 receptor antagonist) on food and water intake in broiler chickens in hunger and satiety
The role of histamine in the regulation of food and water intake in mammals and birds of the review, this study evaluated the effects of intraperitoneal administration of chlorpheniramine as histamine H1-receptor antag...
Effect of Different Biofertilizers and Irrigation Closed Time on Some Agronomic Characteristics of Sugar Beet (Beta Vulgaris L.)
Objective: A field experiment was conducted at Dorud region, Iran, during 2013. The aim of this research was study on effect of different biofertilizers and irrigation closed time on some agronomic characteristics of s...
Investigation the Efficiency Ceftiofur Hydrochloride in Prevention of Uterine Postpartum Infections and Improvement the Fertility Parameters in Holstein Dairy Cows Affected by Retained Fetal Membrane and Dystocia
Objective: Ceftiofur, a third-generation cephalosporin, is used as a usual antimicrobial drug in veterinary medicine. Positive efficiency of ceftiofur for treatment of retained fetal membrane (RFM) and acute puerperal...
Antioxidant Properties of Various Solvent Extracts of Lemon Verbena (Lippia Citriodora) Leaves
Lemon verbena (Lippia citriodora) belongs tothe Verbenaceae (shahpasand) family.L.citriodora is chemical composition of the leaves plant have antimicrobial properties, refrigerant,anti-headaches onesided, anti- pains ne...