Polymorphism of beta (b) casein gene and their association with milk production traits in Sahiwal and HF crossbred cattle

DOI: 10.18805/ijar.B-3591    | Article Id: B-3591 | Page : 847-851
Citation :- Polymorphism of beta (b) casein gene and their association with milk production traits in Sahiwal and HF crossbred cattle.Indian Journal Of Animal Research.2019.(53):847-851
Akhilesh Pandey and M.S. Thakur and Y. Pandey akpandey1109@rediffmail.com
Address : Department of Animal Genetics and Breeding, College of Veterinary Science and Animal Husbandry, Nanaji Deshmukh Veterinary Science University, Jabalpur-482 001, Madhya Pradesh, India.
Submitted Date : 6-03-2018
Accepted Date : 18-09-2018

Abstract

Present research work was carried out on 50 Sahiwal and 50 HF Crossbred cattle in the Department of Animal Genetics and Breeding of College of Veterinary Science and A H Jabalpur. During the research work the PCR amplified products of 121bp was digested by restriction endonuclease enzyme DdeI, which recognizes G^AATTC sites. The patterns evolved in the present study showed that the presence of one restriction site on one alleles and absence of restriction site on other alleles resulted in the appearance of three bands of 121, 86 and 35bp.This genotype was referred to as A1A2. When both strand had no restriction sites for the enzyme, only one band of 121bp was observed on the gel such genotype was designated as A2A2 type. The â- casein gene showed A2A2 and A1A2 genotypes were observed in Sahiwal and HF crossbred cattle. The genotypic frequencies of â-casein (CSN2)/ DdeI gene for A1A1, A1A2 and A2A2 are 0.00, 0.30, and 0.70 in Sahiwal and 0.00, 0.64 and 0.36 in HF crossbred cattle, respectively and the gene frequency A1 and A2 is 0.15 and 0.85 in Sahiwal and 0.32 and 0.68 in HF crossbred cattle. High frequency of A2 allele was observed in both the breeds of cattle under the study.

Keywords

Beta (b) Casein Gene HF Crossbred Polymorphism Sahiwal

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