Genetic characterization and bottleneck analysis of Molai Adu and Pallai Adu goats from Southern India

IF 1.6 3区农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE

Small Ruminant Research Pub Date : 2025-03-22 DOI:10.1016/j.smallrumres.2025.107488

M. Seevagan , T. Ravimurugan , S.M.K. Karthickeyan , T. Thamil Vanan , T. Anna , R. Rajendran , P. Gopu

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Abstract

Genetic characterization and bottleneck analysis of Molai Adu and Pallai Adu goats from southern India were conducted using 25 microsatellite markers recommended by the FAO (2011). Molai Adu, the only naturally polled goat breed in India, showed a total of 202 alleles, with an average of 8.08 ± 0.435 alleles per locus, while Pallai Adu, known for their prolific nature, exhibited a higher count of 219 alleles, averaging 8.76 ± 0.581 alleles per locus. Both breeds demonstrated high genetic diversity, as evidenced by the elevated number of observed alleles, Polymorphism Information Content (PIC), and expected heterozygosity values. Out of the 25 loci analyzed, only three were in Hardy-Weinberg equilibrium, with the remaining 22 loci showing significant deviations in both goat populations. The study also revealed a genetic identity of 0.7720 between Pallai Adu and Molai Adu goats, corresponding to a genetic distance of 0.2588. Bottleneck analysis indicated no signs of recent population bottlenecks, as most loci displayed heterozygote excess and an L-shaped allele frequency distribution, suggesting stable genetic diversity. These findings underscore the genetic richness and adaptability of Molai Adu and Pallai Adu goats, highlighting their importance for conservation and sustainable breeding initiatives.

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来源期刊

Small Ruminant Research 农林科学-奶制品与动物科学

CiteScore

3.10

自引率

11.10%

发文量

210

审稿时长

12.5 weeks

期刊介绍： Small Ruminant Research publishes original, basic and applied research articles, technical notes, and review articles on research relating to goats, sheep, deer, the New World camelids llama, alpaca, vicuna and guanaco, and the Old World camels. Topics covered include nutrition, physiology, anatomy, genetics, microbiology, ethology, product technology, socio-economics, management, sustainability and environment, veterinary medicine and husbandry engineering.