Variation in lactoferrin gene affects milk lactoferrin content and somatic cell count in murrah buffaloes

DOI: 10.18805/ijar.B-3773    | Article Id: B-3773 | Page : 265-274
Citation :- Variation in lactoferrin gene affects milk lactoferrin content and somatic cell count in murrah buffaloes.Indian Journal Of Animal Research.2020.(54):265-274
Arun Pratap Singh, K.P. Ramesha, M.A. Mir, Ashwani Arya and S. Isloor
Address : Livestock Production Management, Krishi Vigyan Kendra, Ajmer-305 206, Rajasthan, India.
Submitted Date : 24-10-2018
Accepted Date : 31-12-2018


Lactoferrin plays an important role in antimicrobial defence and is a potential candidate gene for mastitis resistance. In the present investigation, polymerase chain reaction-single strand conformation polymorphism (PCR-SSCP) studies were carried out in Murrah (Bubalus bubalis) buffaloes to detect single nucleotide polymorphisms (SNPs) of lactoferrin gene and to analyse the association between the observed polymorphisms with milk lactoferrin content and Somatic cell count (SCC). PCR-SSCP analysis revealed a total of 07 different variants in the partial coding region of the lactoferrin gene. PCR-SSCP analysis of exon 10 of lactoferrin gene revealed three and that of exons 4 and 5 revealed two unique patterns each, while all other exons exhibited monomorphic pattern. Comparison of nucleotide sequences of lactoferrin gene of the Murrah buffaloes with taurine reference sequence revealed a total of 14 point mutations, 09 of which were found to be in coding region. Conceptualized translation of nucleotide sequence revealed 07 amino acid changes. SSCP variants of exon 10 (P<0.01) had significant effect on milk SCC. The SSCP variants of exon 4 and exon 5 had significant (P<0.05) effect on lactoferrin content. The SCC and lactoferrin content in Murrah buffaloes was highest in 4th and above parity group. Stage of lactation had highly significant (P<0.01) effect on both milk SCC and lactoferrin content. There was a high and significant (p<0.01) correlation (0.741) between SCC and lactoferrin content in milk. The observed association between SSCP variants in lactoferrin gene with milk SCC and milk lactoferrin content can be used as prognostic markers for selection of animals for high lactoferrin content and low somatic cell count, as well as a marker of susceptibility/resistance to mastitis in Murrah buffaloes.


Lactoferrin gene Milk lactoferrin content Murrah buffaloes PCR-SSCP Somatic Cell Count SNPs.


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