Phenotypic characterization of Lesser Known sheep Population in central Dry Zone of Karnataka

A study was carried out to characterize the lesser-known sheep population of the Central Dry Zone (CDZ) of Karnataka. Data was collected from 144 shepherds across 48 villages [Chitradurga (Group I) and Tumkur-(Group IIA & IIB)] were collected to document socio-economic aspects, flock management, and the phenotypic and morphometric traits of the sheep. The population exhibited distinct phenotypic features: predominantly black, brown with admixtures of black, brown and white, convex head profile, long pendulous ears, and absence of wattles. Tail length varied, with short tails was predominant in Group I of Hiriyur Taluk, Chitradurga and long tails in Groups IIA and IIB were observed in Sira Taluk, Tumkur district. The average body weight of male lambs in Group I, IIA, and IIB was 13.728 ± 0.878, 17.023 ± 0.729, and 17.934 ± 1.165 kg, while female lambs averaged 11.939 ± 0.685, 14.309 ± 0.574, and 15.429 ± 0.918 kg. Average body length of male lambs was 51.116 ± 1.167, 57.435 ± 0.969, and 57.907 ± 1.548 cm; females measured 49.773 ± 1.083, 55.261 ± 0.908, and 56.019 ± 1.452 cm. In the four-teeth age group, males measured 71.913 ± 0.968, 74.571 ± 0.716, and 76.000 ± 1.468 cm, while females measured 71.267 ± 0.939, 70.250 ± 0.643, and 71.615 ± 1.009 cm. Morphometric analysis showed sexual dimorphism, with males consistently heavier and larger than females. Chest girth, withers height, body length and rump height showed significant correlation. Chest girth was the best predictor of body weight.

⓿ Distinct phenotypic features: predominantly black, brown with admixtures of black, brown and white, convex head profile, long pendulous ears, and absence of wattles.

⓿ Morphometric analysis showed sexual dimorphism, with males consistently heavier and larger than females.