Polymorphism of Growth Factor 1 gene in New Zealand rabbit breed in Cu Chi farm, Vietnam

Phu Nam Anh Bui; Van Hop Nguyen; Ba Chung Le; Minh Tri Ngo

doi:10.15625/vjbt-22093

Author affiliations

Authors

Phu Nam Anh Bui \(^1)\ Animal Genetics Group, Faculty of Biotechnology, Ho Chi Minh city Open University, 35-37 Ho Hao Hon street, Co Giang ward, District 1, Ho Chi Minh city, Vietnam https://orcid.org/0000-0002-9430-0893
Van Hop Nguyen $^{2}$ Institute of Animal Sciences for Southern Vietnam, Organization, 12 Nguyen Chi Thanh street, Ward 2, District 10, Ho Chi Minh city, Vietnam
Ba Chung Le $^{2}$ Institute of Animal Sciences for Southern Vietnam, Organization, 12 Nguyen Chi Thanh street, Ward 2, District 10, Ho Chi Minh city, Vietnam https://orcid.org/0009-0001-2085-8544
Minh Tri Ngo \(^1)\ Animal Genetics Group, Faculty of Biotechnology, Ho Chi Minh city Open University, 35-37 Ho Hao Hon street, Co Giang ward, District 1, Ho Chi Minh city, Vietnam

DOI:

https://doi.org/10.15625/vjbt-22093

Keywords:

GH1 gene polymorphism, New Zealand White rabbits, rabbit growth traits, PCR-RFLP genotyping, selective breeding

Abstract

Rabbit husbandry in Vietnam is a growing sector of the livestock industry, offering significant potential for sustainable meat production and economic development, particularly in rural areas. Rabbits are well-suited to Vietnam's tropical climate due to their adaptability, high reproductive rates, and relatively low resource requirements compared to larger livestock. The New Zealand White breed and various local crossbreeds are the most commonly raised rabbits, valued for their resilience, efficient feed conversion, and quality meat. The Growth Hormone 1 (GH1) gene encodes the growth hormone (GH), a pivotal endocrine regulator essential for normal development and metabolic function across animal species. GH is synthesized in the anterior pituitary gland and plays a central role in growth, tissue repair, and metabolism. This study investigates the polymorphism of the Growth Hormone 1 (GH1) gene and its association with growth performance in New Zealand white rabbits reared at Cu Chi Farm, Vietnam. Fifty-six rabbits were genotyped for the GH1 c.-78C>T polymorphism using the PCR-RFLP method, and their body weight at 70 days of age was measured. The genotypic frequencies were distributed as CC (28.57%), CT (44.64%), and TT (26.79%), with allele frequencies of 0.515 for C and 0.485 for T. Statistical analysis revealed that heterozygous CT rabbits exhibited significantly higher body weight (1885 ± 17.04 g) compared to CC (1785.45 ± 12.05 g) and TT (1752 ± 19.35 g) genotypes. The equal allele frequency observed may result from the selective advantage of the heterozygous genotype, maintaining a balanced genetic structure within the population. These findings suggest that GH1 polymorphism influences growth traits and highlight its potential as a genetic marker for selective breeding programs aimed at improving growth efficiency in rabbits. Further studies are recommended to explore additional genetic markers and validate these results on a larger scale.

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