Krustojuma sivēnmāšu (M1) auglības rādītāju analīze atkarībā no mātes šķirnes un paritātes = Analysis of fertility traits of crossbred sows (M1) depending on the breed and parity of the mother
2024
Kijoneka, Patrīcija Paula | Degola, Lilija
In recent years, there has been a significant increase in the number of piglets per litter in commercial pig production, accompanied by an increase in the number of stillborn piglets per litter. In Latvia, pigs of the Landrace and Yorkshire breeds and crossbred pigs (M1) are used for the production of piglets. The aim of the study was to analyse the fertility traits of the sows of the producing pig farm based on the breed and parity of the sows. The data for 1–3 and 4–6 for parity of sows were analysed which farrow in the period from June 1st, 2023 to June 1st, 2024. The sows included in the study were an M1 cross, using LY (Landrace × Yorkshire, litters n=1965) and YL (Yorkshire × Landrace, litters n=3764). The data were analysed according to the following characteristics of LY and YL sows: the number of piglets born, live-born piglets, stillborn and mummified piglets per litter. The results showed, that the largest litters were obtained from older (4–6 parity) sows, LY 65.6% and YL 52.4%, of the total number of litters. The litter size for sows of parity 1–3 was on average 17.7 piglets, while parity 4 to 6 – on average 20.5 piglets. According to the obtained data, it was observed that the number of stillborn piglets and the number of mummified piglets increased as the number of piglets in the litter increased.
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出版者 Latvijas Biozinātņu un tehnoloģiju universitāte
