Genotypic and phenotypic evaluation of growth performance of Narimster cattle at Sibi balochistan
By: Faisal Asharaf, Hubdar Ali Kaleri, Rameez Raja Kaleri, Asma Kaleri, Ali Ghulam Bugti, Raza Ali Mangi, Zahid Qadir, Abdul Latif
Key Words: Narimaster, Growth traits, Sire effect, Season effect, Heritability
Int. J. Biosci. 9(2), 154-158, August 2016.
The present study was carried out on the genotypic and phenotypic evaluation of growth performance of Narimaster cattle maintained at Government Beef Production Research Centre Sabi, Balochistan. The data was recorded from 2005-2014 on growth traits including birth weight, weaning weight, yearling weight and weight at 18 months. The collected data was interpreted and analyzed using the statistical package ‘Statistix 8.1 and ANOVA. The effect of sire (A, B, C, D and E) with 25 calves per sire, seasons (Spring, Summer, Autumn and Winter) on each trait was observed and the heritability estimate was worked. The result revealed that sire-wise average birth weight, weaning weight, yearling weight and weight at 18 months for calves maintained at Beef Production Research Centre Sibi, Balochistan were 71±4.04, 141.41±8.87, 401.36±20.86 and 579.60±29.15 (kg), respectively. The season-wise results (spring, Summer, Autumn and Winter) for birth weight were 21.74±4.48, 21.50±4.37, 23.74±4.00, 19.78±4.25 (kg), weaning weight 144.56±8.65, 141.76±8.72, 141.68±8.62, 136.76±7.72 (kg), yearling weight 401.74±21.45, 403.28±21.38, 404.36±21.86, 395.54±20.86 (kg) and weight at 18 months 609.00±29.15, 598.78±30.83, 602.30.46, 597.54±27.83 (kg), respectively. Heritability estimates for birth weight, weaning weight, yearling weight and weight at 18 months were 0.475, 0.559, 0.222 and 0.389, respectively. It was concluded that genotypic traits like birth weight, weaning weight, yearling weight and weight at 18 months was found to be higher in the spring and autumn seasons. Heritability estimates of Narimaster cattle were moderate to low.