Influence of Season and Concentration of Sperms on Productive Performance of Large White Yorkshire Pigs
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Date
2017-04
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Abstract
A study was conducted in Large White Yorkshire pigs maintained at Post
Graduate Research Institute in Animal Sciences, Kattupakkam, Tamilnadu to study the
influence of season and different spermatozoa concentrations on productive performance of
sows. The mean birth weight was significantly higher (P<0.01) in diluted semen group with
spermatozoa dose of 1.8 billion (1.34 ± 0.02 kg) compared to natural service group (1.27 ±
0.02 kg), neat semen group (1.21 ± 0.02 kg) and diluted semen group with spermatozoa dose
of 3.6 billion (1.30 ± 0.02 kg). Similarly, treatment groups had significant influence (P<0.01)
on weaning weight. However, the litter weight at birth and weaning did not show any
significant influence between the treatment groups. Piglets of diluted semen group with
spermatozoa dose of 1.8 billion had highest weaning weight compared to the other three
groups. The difference in pre-weaning weight gain was found to be highly significant
between the four treatment groups with highest gain in diluted semen group with
spermatozoa dose of 1.8 billion (188.49 ± 4.10 g/day) due to smaller litter size. Season had a
highly significant influence (P<0.01) on birth weight, litter weight at birth and litter weight at
weaning. The highest litter weight at weaning was recorded during farrowing at summer
(74.57 ± 2.39 kg), followed by rainy season (62.88 ± 1.93 kg). It was observed that season
had no influence on weaning weight, pre-weaning weight gain and pre-weaning mortality rate
in piglets.
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Veterinary Science