Results of sow reproductive performance due to application of insulingenic diet and natural stimulation of estrus
2008
Kapelanski, W.,University of Technology and Life Sciences, Bydgoszcz (Poland). Dept. of Pig Breeding | Biegniewska, M.,University of Technology and Life Sciences, Bydgoszcz (Poland). Dept. of Pig Breeding | Jankowiak, H.,University of Technology and Life Sciences, Bydgoszcz (Poland). Dept. of Pig Breeding | Zmudzinska, A.,University of Technology and Life Sciences, Bydgoszcz (Poland). Dept. of Pig Breeding | Jelinska, A.,University of Technology and Life Sciences, Bydgoszcz (Poland). Dept. of Pig Breeding
The aim of the study was to evaluate the effect of a diet which enhanced insulin secretion and early contact with an adult boar on the reproductive performance of crossbred gilts (PL x PLW, n=40). At the age of 142 days animals were fed with a diet enriched with maize starch and glucose. The diet was given during 21 days and then the gilts were subjected every day to 20 minutes' contact with an adult boar and were observed in respect to estrus symptoms. The intensity of the symptoms was evaluated on a scale given by Karalus. It attained on average 2.37 points. Gilts were mated during their second estrus at on average 216 days and 123.5 kg body weight. The efficiency of natural mating was 92%. The number of live-born piglets was 10.76, the number of weaned piglets was 9.94. The litter weight at birth was 16.71 kg and at weaning 60.03 kg. In conclusion, the applicated diet accelerated the ovarian development. The application of the insulingenic diet and the contact with a boar led to very good reproductive performances in gilts.
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