title: MspI allelic pattern of bovine growth hormone gene in Indian zebu cattle (Bos indicus) breeds.
abstract: The MspI allelic variation in intron III of the bovine growth hormone (bGH) gene was explored using PCR-RFLP in 750 animals belonging to 17 well-recognized breeds of Indian zebu cattle (Bos indicus) reared in different geographic locations of the country. Restriction digestion analysis of a 329-bp PCR fragment of the bGH intron III region with MspI restriction enzyme revealed two alleles (MspI- and MspI+) and two genotypes (-/- and +/-) across the 17 cattle breeds studied. The allelic frequency varied from 0.67 to 0.94 for MspI (-) and from 0.06 to 0.33 for MspI (+) across the 17 breeds, with a combined average frequency of 0.87 and 0.13, respectively. No animal with +/+ genotype was detected across the samples analyzed. The chi-square test showed that the difference in MspI allelic frequency was not significant (p > 0.05), regardless of the geographic origin, coat color, or utility of the cattle breed. The high MspI (-) allele frequencies obtained for Indian zebu cattle in this study are in sharp contrast to those reported for taurine breeds from northern Europe, Mediterranean countries, and America. Findings of this study further substantiate the hypothesis that the MspI (-) allele has an Indian origin.
authors.affiliation: Cattle Genomics Laboratory, National Bureau of Animal Genetics Resources, PO Box 129, Karnal 132001, Haryana, India. monikasodhi@yahoo.com
authors.forename: M
authors.initials: M
authors.lastname: Sodhi
authors.forename: M
authors.initials: M
authors.lastname: Mukesh
authors.forename: B
authors.initials: B
authors.lastname: Prakash
authors.forename: B P
authors.initials: BP
authors.lastname: Mishra
authors.forename: R C
authors.initials: RC
authors.lastname: Sobti
authors.forename: Karn P
authors.initials: KP
authors.lastname: Singh
authors.forename: Satbir
authors.initials: S
authors.lastname: Singh
authors.forename: S P S
authors.initials: SP
authors.lastname: Ahlawat
mesh_terms: D000818:Animals; D001947:Breeding; D002417:Cattle / Q000235:genetics*; D004262:DNA Restriction Enzymes / Q000378:metabolism*; D051456:Gene Flow; D005787:Gene Frequency; D005838:Genotype; D013006:Growth Hormone / Q000235:genetics*; D007194:India; D012150:Polymorphism, Restriction Fragment Length; D017422:Sequence Analysis, DNA
chemical_list: C073294:growth hormone, bovine; D013006:Growth Hormone; D004262:DNA Restriction Enzymes