Effect of feeding sows on rations enriched with conjugated linoleic acid (CLA) and the growth capacity and survival of their piglets
2012
Hadas, Z., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat | Cechova, M., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat | Nevrkla, P., Mendelova Univ., Brno (Czech Republic). Ustav Chovu a Slechteni Zvirat
The evaluation of the effect of conjugated linoleic acid (CLA) supplemented to pregnant and lactating sows on the phenotypic manifestation of their reproductive performance and on the birth and weaning weight of piglets was performed under conditions of a commercial herd of pigs. The experiment involved 40 hybrid sows (20 control and 20 experimental sows). Experimental sows received a supplement of 2 % of CLA within the time interval from the 108th day of pregnancy to the 28th day after the parturition. The following litter characteristics were recorded: number of all newborn piglets, number of piglets born alive, number of stillbirths, number of weaned piglets, individual weights of newborn and weaned piglets. Our results concerning numbers of all newborn control and experimental piglets (12.20+/-2.09 and 11.85+/-2.58, respectively) indicate that CLA supplementation in the last stage of pregnancy does not influence litter size. The weights of newborn and weaned piglets were not influenced by CLA supplementation. Statistically significant differences were found out between experimental and control animals in numbers of weaned piglets (9.75+/-1.68 vs. 8.35+/-1.39) and between corresponding losses until weaning (0.95+/-1.39 vs. 2.60+/-1.93). In conclusion, CLA supplementation to lactating sows can reduce losses of piglets till weaning.
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