Year: 2019 | Month: April | Volume 9 | Issue 2

The Estimation of Genetic and Phenotypic Parameters of Growth Curve Traits in Sirohi Goat Using Brody Function


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Abstract:

The objectives of this study were to investigate growth patterns of Sirohi goat applying the Brody function and estimated the parameters of growth curve including genetic evaluation of growth curve traits. The data used in this study, collected in All India Co-ordinated Research Project (AICRP) on goat improvement, Livestock Research Station, Vallabhnagar, Udaipur, India from year 2009 to 2017 and were included 340 male and 715 female kids body weight measured at birth to 12th month of age in every three months interval. Least-squares means for growth curve parameters of A (Asymptotic weight), B (folding point of growth) and K (maturity rate) were 26.18±3.11 (kg), 0.88±0.00 (kg) and 0.16±0.00 (days), respectively. Fixed effects (cluster, year and season of birth, sex, and type of birth) were significantly influenced the parameters of growth curve. The heritability estimates ranged from 0.02±0.01 (“K”) to 0.40±0.05 (“A”). The genetic correlation between A-K and B-K was negative, which might be due to the compensatory growth effect.



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