烯丙孕素处理对初产母猪繁殖性能的影响

doi:10.16174/j.issn.1673-4645.2025.02.007

Abstract

Abstract: In order to solve the breeding performance barriers of primary sows and to reduce production costs, primary sows were seceleted and divided into 3 group, control group, FTAI group and Altrenogest＋FTAI group before weaning in this experiment respectively. The main results were as follows: ⑴The participating sows farrowing rate of Altrenogest ＋ FTAI group(79.74%) and FTAI group(77.90%) were higher than that of the control group(60.45%)(P＜0.01), and the participating sows farrowing rate of Altrenogest＋FTAI group(80.47%) and FTAI group(72.96%) were higher than that of the control group(35.28%) in thin backfat group of primiparous sows(P＜0.01), and the participating sows farrowing rate of Altrenogest＋FTAI group(100.00%) was higher than that of the control group(44.44%) in fatty backfat group of primiparous sows(P＜0.01); ⑵The total numbers of born(TNB) of Altrenogest＋FTAI group(13.07) was higher than that of the control group(11.37) (P＜0.01), and the total numbers of born(TNB) of FTAI group(12.76) was higher than that of the control group(P＜0.05), and the total numbers of born(TNB) of Altrenogest＋FTAI group(13.18) was higher than that of the control group(10.61) in moderate backfat group of primiparous sows(P＜0.05), and the numbers of born qualified of Altrenogest ＋ FTAI group(11.62) and FTAI group(11.59) were higher than that of the control group(10.50) (P＜0.05); ⑶And the numbers of feeding days of participating sow needed per total piglets of Altrenogest＋FTAI group(12.63) and FTAI group(13.74) were less(than that of the control group(16.27) in thin backfat group of primiparous sows P＜0.01), and the numbers of feeding days of participating sows needed per alive piglets of Altrenogest＋FTAI group(13.36) and FTAI group(14.24) were lessthan that of the control group(16.99) in thin backfat group of primiparous sows(P＜0.01), and the numbers of feeding days of participating sows needed per qualified piglets of Altrenogest＋FTAI group(13.78) and FTAI group(14.72) were less than that of the control group(17.20) in thin backfat group of primiparous sows(P＜0.01). Conclusions: The treatment method of Altrenogest＋FTAI group was better to improve the participating sows farrowing rate of primiparous sows in the thin backfat primiparous sows and the fatty backfat primiparous; The treatment methods of Altrenogest＋FTAI group was better to improve the total number of born(TNB) of primiparous sows in the moderate backfat primiparous sows; And the treatment method of Altrenogest＋FTAI group was better to reduce the number of feeding days of participating sow needed per total piglet， the number of feeding days of participating sow needed per alive piglet and the number of feeding days of participating sow needed per qualified piglet in the thin backfat primiparous sows.

Key words: altrenogest; primiparous sows; reproductive performance; litter size; delivery rate; effect

CLC Number:

S828

References

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