Sow and litter performance of pure bred and cross bred pigs in Sri Lanka
1982
Rajamahendran, R. | Fernando, R.M.B. (Peradeniya Univ. (Sri Lanka). Dept. of Animal Husbandry)
The main objective of this study was to evaluate the sow and litter performance of pure and cross bred pigs maintained in the mid-country area of Sri Lanka. Pure large white, landrace and their reciprocal crosses were the breeds represented in this study. Data was collected from records of 36 sows maintained at Victoria farm from 1976 to 1980 inclusive. Pure breds had larger litter sizes at birth and at 8 weeks than the cross breds. Pure large white had the largest litter size at birth (9.92) and at 8 weeks (8.1). Also pure breds had significantly higher litter weight at birth and at 8 weeks than the cross breds. Litter weight at birth was significantly higher in the landrace (14.09 kg) than the large white (12.76 kg). However, no difference was observed on the litter weight at 8 weeks between these breeds. Weaning to oestrus interval was significantly shorter in the pure breds with large white pure recording the shortest interval (8.24 days). Analysis also reveals significant parity effects on litter weight at birth, 8 weeks and weaning to oestrus interval
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