Significance of Environmental Influences on Average Daily Milk Traits of Sirohi Goats in Their Native Tract

DOI: 10.18805/ijar.B-3834    | Article Id: B-3834 | Page : 781-785
Citation :- Significance of Environmental Influences on Average Daily Milk Traits of Sirohi Goats in Their Native Tract.Indian Journal Of Animal Research.2020.(54):781-785
L. Gautam H.A. Waiz and R.K. Nagda lkgautam10@gmail.com
Address : College of Veterinary and Animal Science, Navania, Udaipur-313 601, Rajasthan, India.
Submitted Date : 23-04-2019
Accepted Date : 31-07-2019

Abstract

Data on 3244 Sirohi kidding during 2004 to 2016 in farmer’s flocks under All India Co-ordinated Research Project on Goat Improvement (AICRP) project, Vallabhnagar, Udaipur were utilized to estimate the average daily milk (ADM) at different lactation months and subjected to least square analysis to study the effect of various non-genetic factors like cluster, periods of kidding, season of kidding, parity, type of birth and regression of dam’s weight. The overall least-squares means for ADM1, ADM2, ADM3, ADM4, ADM5 and overall ADM were 564.07±18.34, 671.92±15.17, 633.41±10.75, 508.93±8.01, 329.72±7.93 and 540.79±10.78 ml, respectively. Cluster and period wise variation were highly significant on all stages of average daily milk yields. The parity had statistically highly significant effect on average daily milk yields, in which seemed that milk yields increase as parity increase, thereafter declined slowly. The effect of type of kidding was non-significant on all stages of average daily milk yield under this study. The regression of dam’s weight at kidding was positive and highly significant (P£ 0.01) on all average daily milk yield. The heritability estimates for these traits ranged from 0.03±0.01 (ADM4) to 0.19±0.02 0.06±002 (ADM1). The high estimates of genetic correlations of average milk yield of different periods with overall average daily milk yield. The phenotypic correlations were positive and low between ADM1 and ADM4­, ADM5 and medium between ADM1 and ADM4, ADM5. In order to augment goat milk production, goat keepers need to be focused on nutritional and others environmental conditions as it affect their flock. 

Keywords

Average daily milk yield Heritability Non-genetic factors Sirohi goat

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