Characterization of a unique Sikkimese yak population of India: a multivariate approach.

Autor: Aggarwal RAK; ICAR-National Bureau of Animal Genetic Resources, Karnal, Haryana, 132001, India. Rajeev.Aggarwal@icar.gov.in., Kour A; ICAR-National Research Centre On Yak, Dirang, Arunachal Pradesh, 790101, India., Gandhi RS; ICAR-National Bureau of Animal Genetic Resources, Karnal, Haryana, 132001, India., Niranjan SK; ICAR-National Bureau of Animal Genetic Resources, Karnal, Haryana, 132001, India., Paul V; ICAR-National Research Centre On Yak, Dirang, Arunachal Pradesh, 790101, India., Bhutia TL; Sikkim Livestock Development Board, Gangtok, Sikkim, India., Bhutia KD; Sikkim Livestock Development Board, Gangtok, Sikkim, India.
Jazyk: angličtina
Zdroj: Tropical animal health and production [Trop Anim Health Prod] 2023 May 18; Vol. 55 (3), pp. 208. Date of Electronic Publication: 2023 May 18.
DOI: 10.1007/s11250-023-03627-y
Abstrakt: Native Sikkimese yak in Sikkim state of India is a pastoral treasure being raised through centuries-old transhumance practices and has evolved in response to natural and man-made selection. Currently, the population of Sikkimese yak is at risk with about five thousand total headcounts. Characterization is essential for taking appropriate decisions for conservation of any endangered population. In an attempt to phenotypically characterize the Sikkimese yaks, this study recorded phenotypic morphometric traits information, viz., body length (LG), height at withers (HT), heart girth (HG), paunch girth (PG), horn length (HL), horn circumference (HC), distance between horns (DbH), ear length (EL), face length (FL), face width (FW), and tail length with switch (TL), on 2154 yaks of both sexes. Multiple correlation estimation highlighted that HG and PG, DbH and FW, and EL and FW were highly correlated. Using principal component analysis, LG, HT, HG, PG, and HL were found to be the most important traits for phenotypic characterization of Sikkimese yak animals. Discriminant analysis based on different locations of Sikkim hinted at the existence of two separate clusters, however, broadly, phenotypic uniformity could be observed. Subsequent genetic characterization can offer greater insights and can pave the way for future breed registration and conservation of the population.
(© 2023. The Author(s), under exclusive licence to Springer Nature B.V.)
Databáze: MEDLINE
Externí odkaz: