STUDIES ON GENETIC AND NON GENETIC VARIATIONS OF ANGORA RABBITS REARED IN KANGRA VALLEY OF HIMACHAL PRADESH
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Date
2010-07
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CSKHPKV, Palampur
Abstract
ABSTRACT
This study was conducted to evaluate the phenotypic profiles, genetic and non genetic effects on
wool production and reproduction traits in 588 and 361 German Angora rabbits maintained at
Angora Rabbit Breeding Farm, Kandwari, Kangra (Himachal Pradesh) from 2000 to 2009 for
reproduction traits and from 2000 to 2007 for wool production traits. The data was analyzed by
Harvey’s least squares method of fitting constants. The overall least squares means were 4.62
1.64 k, 30.39 0.58 d, 58.77 35.10, 169.77 30.38, 181.00 21.30, 184.73 23.49, 594.22
67.13, 591.82 193.67 and 1185.96 202.96 g respectively for litter size at birth, gestation
period, wool yield at first, second, third, fourth clip, first year, second year and cumulative yield.
Year and season of kindling significantly affected litter size at birth, wool yield at first, third, fourth
clip and first year yield. Gestation period, wool yield at second clip, second year and cumulative
yield were affected by year. Heritability estimates were 0.09, 0.29 0.030, 0, 0.312 0.021, 0.27
0.017, 0.412 0.028 and 0.116 0.013 respectively for wool yield at first, second, third, fourth
clip, first year, second year and cumulative yield. Genetic correlations of wool yield at second clip
with second year and cumulative yield, wool yield at fourth clip with second year and cumulative
yield and first year with second year and cumulative yield were negative. Wool yield at first clip
with cumulative yield, second with third clip and third with fourth clip, first year, second year and
cumulative yield were zero. Wool yield at second clip with fourth clip had the highest genetic
correlation (1.226 0.398). Phenotypic correlations of second clip with second year and third clip
with second year yield were negative. Second year and cumulative yield had the highest
significant phenotypic correlation (0.942). Winter appeared to be the most favorable season for
breeding of Angora rabbits. Improvement can be achieved with proper selection and improved
management practices. Pure breeding stock of Angora rabbits can be introduced to maintain
superior genotypes and variability.
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