Effects of the housing system on boar reproductive performance
2003
Thevin Vongpralub(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Animal Science) | Picharat Sanchisuriya(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Animal Science) | Bunyat Loapaiboon(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Animal Science) | Boonta Tummaboot(Khon Kaen University, Khon Kaen (Thailand). Faculty of Agriculture. Department of Animal Science)
There were 2 experiments conducted to study the effects of the housing system on boar reproductive performances. In experiment 1, ten boars, at 10 months of age, were assigned randomly to 2 housing systems, close housing system (evaporative cooling system, EVAP) and open housing system (OHS), to evaluate the effects of housing system on semen quality. The semen samples were collected once a week over the experimental period of 10 months. The results indicated that the EVAP showed significantly better than the OHS on semen volume (P LT 0.05, 191.6:169.5 ml.), sperm motility (P LT 0.05, 69.9:55.9 percent), percentage of abnormal sperm (P LT 0.01, 33.4:43.8 percent), and acceptable ejaculated (P LT 0.01, 72:43 times). The effect of seasons on semen quality showed that semen volume of the boars in cold season and hot season were higher than rainy season (P LT 0.05, 189.4:190.1:162.5 ml.), sperm motility in cold season was higher than in hot season and rainy season (P LT 0.01, 75.8:57.3:58.9 percent). In experiment 2, semen of three boars from each housing system were inseminated artificially to sows during hot season and early rainy season in order to investigate boar fertility. The results showed that the semen from the EVAP boars was significant better than the OHS boars (P LT 0.05) on farrowing rate (80.7:46.7 percent) and litter size (10.0:7.1 head/litter). The results of this study showed the beneficial effect of the EVAP on boar reproductive performance.
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This bibliographic record has been provided by Thai National AGRIS Centre, Kasetsart University
