Reach Us +441414719275
Heretability Estimate And Breeding Values Of Dairy Cows | 9072
ISSN: 2157-7579

Journal of Veterinary Science & Technology
Open Access

Like us on:

OMICS International organises 3000+ Global Conferenceseries Events every year across USA, Europe & Asia with support from 1000 more scientific Societies and Publishes 700+ Open Access Journals which contains over 50000 eminent personalities, reputed scientists as editorial board members.

Open Access Journals gaining more Readers and Citations
700 Journals and 15,000,000 Readers Each Journal is getting 25,000+ Readers

This Readership is 10 times more when compared to other Subscription Journals (Source: Google Analytics)
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Heretability estimate and breeding values of dairy cows

International Conference on Animal & Dairy Sciences

Ashraf M. Ward

AcceptedAbstracts: J Veterinar Sci Technolo

DOI: 10.4172/2157-7579.S1.004

The objectives of this study are to estimate genetic parameters and breeding values for dairy cows. Data were consisted of 602 records of 231 dairy cows from 03 dairy farms. These cows were born between 2005 and 2010, ranging from first to eighth lactation and included pedigree information. Animal model, based on the REML method, is applied to estimate the heritability, genetic correlations for production and fertility traits. The BLUP technique is used to estimate breeding values for 305- milk yield. The results show that heritability of birth weight, first calving weight, 305-milk yield, fat and protein percentage and calving interval are approximately 0.54, 0.24, 0.37, 0.28, 0.27 and 0.33, respectively. In addition, genetic correlations between birth weight and first calving weight, 305-milk yield and fat, 305-milk yield and protein percentage, among fat and protein content and between 305-milk yield and calving interval are about 0.77, -0.46, -0.24, 0.19 and 0.06, respectively. Genetic correlations among milk production traits and between 305-milk yield and calving interval show a weak association whereas the strong positive genetic correlation is between birth weight and first calving weight. Subsequently, the breeding values for 305-milk yield increase only 23.5 kg per lactation per year.