THE EFFECT OF ATTAINED BACKFAT THICKNESS ON AN EFFECTIVE STOCK : INTRODUCION AND SUBSEQUENT REPRODUCTION POTENTIAL IN GILTS

The body score in gilts can be evaluated on the base of backfat thickness. Since the sowsparturition and lactation are the key factors of prosperous pig husbandry it is necessary to attain the optimal backfat thickness which directly influenced subsequent reproduction of the sows. This work is concerned with the influence of the gilt body score, expressed of backfat thickness, on their stock3 incorporating and subsequent reproduction potential. For this purpose the backfat thickness of 96 gilts were monitored before first insemination. In accordance of obtained body score, subsequently, the actual reproduction traits of individual animals were allocated. Within the reproduction the number of total, live born and weaned piglets, average piglet birth weight and weight at weaning, average litter weight at parturition and weaning were observed. The bacfat thickness measuring was monitored by help of SONOMARK SM 100 M instrument in accordance of the performance recording methodology. The obtained results show that with higher backfat thickness the number of total and live born piglets decreased except number of weaned ones. In the frame of whole3life animal potential the influence of body score on average birth weight, respectively weight at weaning in piglets was not confirmed.