GENETIC AND NON-GENETIC FACTORS AFFECTING THE BIRTH WEIGHT OF BOER GRADED GOATS AND NON-DESCRIPT GOATS
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Date
2018-06
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Abstract
Body weight is the most economically important and easily measured trait of meat
animals. The purpose of this study is to estimate genetic and non-genetic factors affecting the
birth weight of goats. Birth weight data on 487 newborn goat kids of two genetic groups viz.,
non-descript (237) and Boer graded (250) goats were analysed by least-squares analysis using
LSMLMW PC-2 program. The study revealed highly significant (P< 0•01) effect of sire and
sex of kid on birth weight. The regression of birth weight on dams body weight was found to
be highly significant (P<0.01). The overall average birth weight was 2.17 ± 0.03 Kg. The
male kids (2.26 ± 0.04 Kg) were heavier than the female kids (2.09 ± 0.04 Kg). The kids born
during the northeast monsoon were heavier than the kids born in other seasons. The Boer
graded kids (2.22 ± 0.06 Kg) were heavier than the non-descript kids (2.13 ± 0.06 Kg) but the
difference was non-significant, indicating the uniform managemental practices followed in
the farm. The significantly high heritability (0.425 ± 0.156) of birth weight in goat indicates
the better scope for improvement of birth weight through individual selection.
Description
TNV_IJSET_2018_7(3)900-904
Keywords
Veterinary Science