|
|
Analýza užitkových parametrů prasat ve vybraném chovu
Klváček, Pavel
The thesis focuses on analyzing the production and reproduction parameters in pig breeding in Ochoz u Konice. The theoretical part of the thesis includes research on pig reproductive indicators such as fertility and lactation, followed by production indicators, which include growth, feed efficiency, and slaughter value. Furthermore, the issues related to rearing of gilts and their inclusion in breeding are described. The thesis also briefly describes the reproductive cycle of sows, from insemination to piglet rearing. Subsequently, the methodology for monitoring pig performance in the Czech Republic is described. The last part of the literary review characterizes the individual genotypes of Topigs Norsvin pigs. The practical part of the thesis presents the material and methodology of testing. Reproductive and production utility were tested among Topigs Norsvin pig genotypes. The A-line, AxZ, and TN60 genotypes were studied. The influence of parity on reproductive utility and the influence of sex on production utility were also observed. The monitored reproductive parameters included the number of all piglets, live and kept piglets in the litter, as well as the number of stillborn and dead piglets and the percentage of stillborn and dead piglets in the litter. The average daily gain during weaning, pre-fattening, and fattening of pigs was also determined. The results of reproduction indicated that the highest number of all, live, and kept piglets was achieved by the TN60 sow, while the A-line sow had the lowest number. Regarding parity, it was found that the number of all, live, and kept piglets increased with increasing parity of sows, with the lowest number at the first parity and the highest at the fifth parity. The results of production showed that the highest average daily gain was in TN60 pigs, and the lowest was in A-line pigs. In terms of sex, boars achieved higher average daily gain than gilts in all tested genotypes. The TN60 pigs achieved better results in both reproductive and production utility than A-line pigs, confirming the positive operation of hybridization.
|
guest ::
