A method of estrus detection and mating to increase the pregnancy rate of sows

Abstract

The invention provides an oestrus checking and mating method for improving the pregnancy rate of sows and belongs to the technical field of breeding. The method comprises the following steps of oestrus checking, wherein oestrus checking is carried out on the sows each afternoon one time, in the first three days after weaning, boars are not used for checking oestrus, in the fourth to seventh day after weaning, the boars are used for checking oestrus, the oestrus sows are pressed manually, and standing reaction is determined; mating, wherein in the first three days after weaning, if the sows arein oestrus and generate standing reaction, mating is conducted instantly two times, wherein the interval is 12 hours; if the sows are in oestrus while standing reaction does not happen, the sows arekept to conduct mating on the afternoon of the fourth day; in the fourth to fifth day after weaning, oestrus happens, no matter standing reaction is presented or not, mating is conducted immediately,after the interval of 24 hours, mating is conducted for the second time; six days after weaning, the sows which are not in oestrus are directly eliminated; in mating, the boars need to be present. According to the oestrus checking and mating method, the oestrus checking number and mode are reasonably arranged, mating is conducted at the right time, the pregnancy rate of the sows is improved, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the field of breeding technology, in particular to a estrus checking and mating method for improving the conception rate of sows. Background technique [0002] Feeding sows and nurturing young pigs is an important task for maintaining production in pig farms. After the sow is sexually mature, under the action of a series of hormones, the follicle maturation and ovulation process in the ovary is called estrus regularly; the period from the last estrus ovulation to the next estrus ovulation is called the estrus cycle or sexual cycle . Timely mating is a key measure to increase the pregnancy rate of sows and the number of piglets. The goal of the breeding room is to use healthy breeding boars to timely mating with sows that meet the breeding condition to increase the conception rate. The daily management of weaned sows should focus on estrus stimulation. This stage is an important stage in the management of breeding pigs. Effec...

AI Technical Summary

Problems solved by technology

[0003] At present, when sows in pig farms are mating, due to reasons such as poor estrus of weaned sows or unreasonable mating methods, etc., the first mating or re-mating of multiparous sows is unsuccessful, and the proportion of sows that have been empty for a long time If the proportion is large, the feeding cost will increase, and there will be a large economic loss. In addition, due to the inability to breed in time, the farrowing rate of the pig farm will be greatly affected, and it will be difficult to improve the economic benefits, which is not conducive to the development of the pig farm. Therefore, it is urgently needed A method that can greatly mobilize estrus stimulation and timely mating of sows. Successful mating of primiparous and multiparous sows to improve the pregnancy rate of sows