Treatment method for improving group entering efficiency of overdue non-oestrus replacement gilts

Abstract

The invention discloses a treatment method for improving the group entering efficiency of overdue non-oestrus replacement gilts, and belongs to the technical field of sow breeding. The method specifically comprises the following steps: injecting D-Cloprostenol sodium and pregnant mare gonadotrophin serum (PMSG) and chorionic gonadotrophin (hCG) for injection into the non-oestrus replacement gilts which are more than 270 days old, and within 7 days after injection, transferring the gilts with standing reflection into a parturition group to be mixed with weaned gilts for feeding and mating; adding a traditional Chinese medicine composition and a follicular development promoting composition into basic ration of the replacement gilts. For the replacement gilts which are not subjected to oestrus 7 days after injection of D-Cloprostenol sodium and pregnant mare gonadotrophin serum (PMSG) and chorionic gonadotrophin (hCG) for injection, the method further comprises the following steps of feeding altrenogest and injecting D-Cloprostenol sodium subsequently, and for the replacement gilts which are not subjected to oestrus, the method further comprises the step of injecting pregnant mare gonadotrophin serum (PMSG) and chorionic gonadotrophin (hCG) for injection. According to the method, multiple regulation and control modes are organically combined, the group entering efficiency can be improved, the breeding rate and the conception rate can be remarkably increased, the breeding cost is saved, and the breeding benefits are improved.

Description

technical field [0001] The invention relates to the technical field of sow reproduction, in particular to a treatment method for improving the efficiency of grouping of gilts with prolonged anestrus. Background technique [0002] The sow is the source of pig production, and the fecundity of the sow is the core of the level of pig production and whether high efficiency can be obtained. Gilts are more important in pig production. Farms need to use them to replace low-performance sows with an annual renewal rate of about 40-60%, so as to regulate the gestational age structure, health status, and production performance of pigs. Therefore, It can be said that gilts are directly related to the productivity of the farm. In recent years, due to the existence of problems such as high elimination rate and low utilization rate of gilts with prolonged non-estrus (more than 270 days), it has brought significant economic losses to pig enterprises. [0003] Batch production is an importa...

AI Technical Summary

Problems solved by technology

In batch production, the gilts are usually deprived of progesterone 2 days before the weaning date of the sows and about 90% of the gilts will form estrus, service, pregnancy and farrowing together with the weaned sows A new production group was established, so as to realize batch management methods such as mating-delivery-weaning. However, in actual production, some gilts that have not been in estrus for an extended period of time were treated with the above method, and the pregnancy rate was low and the proportion of culling was high. Lead to idle waste of equipment such as delivery beds and nursery beds

Images