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Rajasthan University of Veterinary and Animal Sciences, Bikaner (2019)

Studies on Relationship between Age, Body Weight and Morphological traits of Sirohi goat in Southern Rajasthan

HINA ASHRAF WAIZ

Titre : Studies on Relationship between Age, Body Weight and Morphological traits of Sirohi goat in Southern Rajasthan

Auteur : HINA ASHRAF WAIZ

Université de soutenance : Rajasthan University of Veterinary and Animal Sciences, Bikaner

Grade : Doctor of Philosophy (PhD) - Livestock Production and Management 2019

Résumé partiel
The present study entitled “Studies on Relationship between Age, Body weight and Morphological traits of Sirohi goat in Southern Rajasthan’’ was undertaken in the breeding tract of Sirohi goat maintained at Vallabhnagar and LRS, Bojunda, Chittorgarh farm and by registered farmers field under AICRP on Goat Improvement i.e., Rajsamand districts of Udaipur, Rajasthan state. In present study data with respect to production (growth records at birth,3,6,9 and 12 months of age) and reproduction traits (age at first conception, weight at first conception, age at first kidding and weight at first kidding) were collected from AICRP (Sirohi field unit). The data on morphological traits viz., Heart girth (HG), height at wither (HAW), body length (BL), paunch girth (PG), head length (HL), head width (HW), neck circumference (NC), sternum height (ST), rump height (RH), rump width and rump length (RL) were measured using tailor’s tape. In this study effect of sex, season, type of kidding, cluster and regression on dam’s weight at kidding on growth, morphological and reproduction traits were studied. Phenotypic correlations were determined between body weight and morphological traits at different age (birth to 12 months) groups. Furthermore, body weight was predicted from morphological traits viz., heart girth, height at wither, body length, paunch girth and rump height and finally growth curve was estimated using 6 non- linear regression growth curve models viz., Brody, Gompertz, Logistic, Monomolecular, Richard and Weibull growth curve models in Sirohi goat. 228 In the present study overall least square means of body weight and morphological traits viz., HG, HAW and BL at birth, 3,6,9,12 months age were 2.50±0.39, 11.21±0.36, 15.29±0.41, 18.0±0.57, 21.86 kg and 30.12±0.33, 28.88±0.48, 30.65±0.31, 49.27±0.47, 48.50±0.56, 44.11±0.47, 55.07±0.63, 54.21±0.86, 48.70±0.85, 58.86±0.88, 57.89±1.01, 53±1.07, 63.95±0.99, 63.47±1.10 and 57.71±1.217cm respectively, in Sirohi goat.

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