{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T06:32:47Z","timestamp":1784010767232,"version":"3.55.0"},"reference-count":62,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2021,5,24]],"date-time":"2021-05-24T00:00:00Z","timestamp":1621814400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004493","name":"International Atomic Energy Agency","doi-asserted-by":"publisher","award":["CRPD31028"],"award-info":[{"award-number":["CRPD31028"]}],"id":[{"id":"10.13039\/501100004493","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>\n                    The present study is the first comprehensive report on diversity, population structure, genetic admixture and mitochondrial DNA variation in South Indian draught type zebu cattle. The diversity of South Indian cattle was moderately high. A significantly strong negative correlation coefficient of -0.674 (P&lt;0.05) was observed between the effective population size of different breeds and their estimated F\n                    <jats:sub>IS<\/jats:sub>\n                    . The genetic structure analysis revealed the distinctness of Kangayam, Vechur and Punganur cattle from the rest of the zebu breeds. The results showed the influence of Hallikar breed in the development of most Mysore type cattle breeds of South India with the exception of Kangayam. Bayesian clustering analysis was performed to assess the taurine admixture in South Indian zebu cattle using purebred Jersey and Holstein-Friesian as reference genotypes. Relatively high levels of taurine admixture (&gt;6.25%) was observed in Punganur, Vechur, Umblachery and Pulikulam cattle breeds. Two major maternal haplogroups, I1 and I2, typical of zebu cattle were observed, with the former being predominant than the later. The pairwise differences among the I2 haplotypes of South Indian cattle were relatively higher than West Indian (Indus valley site) zebu cattle. The results indicated the need for additional sampling and comprehensive analysis of mtDNA control region variations to unravel the probable location of origin and domestication of I2 zebu lineage. The present study also revealed major concerns on South Indian zebu cattle (i) risk of endangerment due to small effective population size and high rate of inbreeding (ii) lack of sufficient purebred zebu bulls for breeding and (iii) increasing level of taurine admixture in zebu cattle. Availability of purebred semen for artificial insemination, incorporation of genomic\/molecular information to identify purebred animals and increased awareness among farmers will help to maintain breed purity, conserve and improve these important draught cattle germplasms of South India.\n                  <\/jats:p>","DOI":"10.1371\/journal.pone.0246497","type":"journal-article","created":{"date-parts":[[2021,5,24]],"date-time":"2021-05-24T13:28:06Z","timestamp":1621862886000},"page":"e0246497","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":17,"title":["Legacy of draught cattle breeds of South India: Insights into population structure, genetic admixture and maternal origin"],"prefix":"10.1371","volume":"16","author":[{"given":"Vandana","family":"Manomohan","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ramasamy","family":"Saravanan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rudolf","family":"Pichler","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nagarajan","family":"Murali","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Karuppusamy","family":"Sivakumar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2054-8607","authenticated-orcid":true,"given":"Krovvidi","family":"Sudhakar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Raja K.","family":"Nachiappan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3518-5290","authenticated-orcid":true,"given":"Kathiravan","family":"Periasamy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2021,5,24]]},"reference":[{"key":"pone.0246497.ref001","doi-asserted-by":"crossref","first-page":"3015","DOI":"10.3390\/su10093015","article-title":"Draft Animals, Farm Machines and Sustainable Agricultural Production: Insight from China","volume":"10","author":"X Zhou","year":"2018","journal-title":"Sustainability"},{"key":"pone.0246497.ref002","volume-title":"Integrated Crop Management (FAO) No. 20","author":"Ashburner JE Kienzle","year":"2013"},{"issue":"4","key":"pone.0246497.ref003","first-page":"44","article-title":"Farm Power Availability on Indian Farms","volume":"8","author":"S Singh","year":"2014","journal-title":"Agricultural Engineering Today"},{"issue":"1","key":"pone.0246497.ref004","doi-asserted-by":"crossref","first-page":"49","DOI":"10.18805\/ar.v37i1.9264","article-title":"Relevance of draught cattle power and its future prospects in India: A review","volume":"37","author":"A Natarajan","year":"2016","journal-title":"Agricultural Reviews"},{"key":"pone.0246497.ref005","unstructured":"Livestock Census. 20th Livestock Census of India-Key Results (Provisional). 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