The effect of age at the first mating on the longevity of Czech Landrace and Czech Large White sows
2008
Beckova, R.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic) | Vaclavkova, E.,Vyzkumny Ustav Zivocisne Vyroby, Prague (Czech Republic)
The aim of the present study was to retrospectively analyse the effect of age at the first mating on lifetime reproduction efficiency in Czech Large White (CLW) and Czech Landrace (CL) sows. The average number of parities decreased with increasing age at the first mating. CLW sows mated at the age of about 210 days achieved the highest number of parities (3.49 +/- 2.31), CL sows achieved the highest number of parities (3.16 +/- 2.14) at the mating age of 211-220 days. The monitoring of culling rate after the first parity revealed that 32.31% of CLW sows and 29.94% of CL sows were replaced. The average number of piglets in the first litter (total born, live born and weaned) was higher in CL than in CLW sows.
Показать больше [+] Меньше [-]Ключевые слова АГРОВОК
Библиографическая информация
Эту запись предоставил Library of Antonin Svehla
