Browsing by Author "Priyadharsini, R"
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PresentationItem Open Access Association of myostatin gene with on-field sporting performance (Jallikattu) of indigenous cattle breeds (Bos indicus) of Tamil Nadu(2020-02) Priyadharsini, R; Gopinathan, A; Karthikeyan, SMK; Richard Jagatheesan; TANUVASNow-a-days, sports genomics is a new emerging field to identify the candidate genes with known biological utility, directly or indirectly regulating the developmental processes of the sporting traits in domestic animals intended for sporting events globally. Blood samples were collected from sporting bulls (n=261) in Madurai, Trichy and Pudhukottai districts of Tamil Nadu for isolation of genomic DNA. A total of 13 overlapping sets of primers were generated for PCR amplification of Myostatin gene including its promotor region for molecular characterization. On comparison with Bos taurus sequence, two variations were detected in exon 1 and these variations were found to be synonymous mutations. The exon 2 became a highly homologous and conserved region. The third exon had two variations which were also synonymous. The intron 1 region was found to have 12 types of single base pair variations; two single base pair insertions; and 16 bp and 12 bp insertions. Twenty single base pair variations and one ‘T’ insertion were observed in intron 2 regions. There were nine types of variations found in the promotor region and the binding sites for transcription factors at SNP positions of -1052 and -644 were identified as Oct-1 and COMP-1 respectively. Genotyping of SNP at position -644 revealed the predominance of genotype CC with the estimated frequencies of 0.81, 0.69, 1.00 and 0.80 in Pulikulam, Kangayam, Umblachery and non-descript bulls, respectively. The genotypes (CC, CT and TT) were not associated with the velocity, stride length, time spent within the boundary of bull tamers and time taken to get tamed. But, TT genotype had higher mean velocity and highest time spent within boundary of bull tamers and CC genotype had higher stride length. In conclusion, it could be inferred that the MSTN gene would be used as a marker for sporting traits, but it needs extensive study with respect to association with androgen receptor in sporting bulls.ArticleItem Open Access Demographic and Social Status of Sporting Bull Rearers and Rearing of Jallikattu Bulls(Excellent Publishers, 2019) Priyadharsini, R; Gopinathan, A; Karthickeyan, SMK; Richard Jagatheesan, PN; TANUVASThe study was conducted among 176 sporting bull rearers in Madurai, Trichy, Dindigul and Pudukottai districts who were actively involved in sporting bull rearing. Majority of the sporting bull rearers were in the age group of less than 35 years (38.64 per cent) followed by 36 to 45 years (31.25 per cent) and more than 45 years (30.11 per cent) and they were illiterate (75.57 per cent) and mostly belonging to Hindu religion (77.27 per cent). Among bull rearers, 63.64 percent of the respondents belonged to backward community followed by most backward (26.14 percent) community and scheduled castes (9.60 percent). The data depicted that more than half of the respondents (55.11 per cent) were rearing the sporting bulls as an ancestral legacy for several decades. The bull rearers selected the bull calves based on alertness (24.21 per cent), body conformation (21.56 per cent) and whirls (19.96 per cent). Most of the bull rearers (85.22 per cent) believed that training was essential and their choices were swimming (30.50 per cent), vaadi (22.91 per cent) and hooking the soil by horns (17.98 per cent) for sporting bulls. The findings of this study indicated that it is an age-old traditional sporting event; even though there was no income from these sporting bulls they reared because of their ancestral practice.ThesisItem Restricted GENETIC EVALUATION OF SPORTING TRAITS IN INDIGENOUS CATTLE OF TAMIL NADU(2018) Priyadharsini, R; Gopinathan, A; Karthickeyan, SMK; Richard Jagatheesan, PN; TANUVAS“Jallikattu” is a bull-baiting or bull taming sport and one of the oldest living ancient sports seen in the modern era of Tamil Nadu, which brings out the inherent qualities of the bulls, favouring their selection. Considering the facts of inherent sporting potentiality possessed by our native germplasm, their cultural association with the bravery of people and limited work on sporting performance traits in cattle, the present investigation has been planned to study the physical conformation, sporting performance, aggressiveness and molecular association of myostatin gene with sporting traits in indigenous cattle breeds.ArticleItem Open Access Study on Morphological Traits in Indigenous Jallikattu Bulls of Tamil Nadu(TANUVAS, 2019-09) Priyadharsini, R; Gopinathan, A; Karthickeyan, SMK; Jagatheesan, PN Richard; TANUVASThe study was conducted in Madurai, Dindigul and Trichy districts of Tamil Nadu, where farmers are rearing the jallikattu bulls and the morphological traits were recorded in 232 sporting bulls belonging to Pulikulam, Kangayam, Umblachery and non-descript. The data were analysed using chi-square test to distinguish the differences among genetic groups. The genetic groups viz.Pulikulam, Kangayam, Umblachery and non-descript, were found to be highly significant (P<0.01) source of variation in respect to coat colour, body greyness, eyelid colour, ear shape, hump size, horn size and orientation, tail length and tail switch. This kind of phenotypic traits should be correlated with on-field sporting traits to elucidate the importance of morphological traits in Jallikattu bulls.