Premix and complete feed for improving reproductive performance of replacement gilts

Abstract

The invention provides premix for improving reproductive performance of replacement gilts, and belongs to the technical field of replacement gilt feed. The premix contains 1-1.5 parts of dicalcium phosphate, 0.8-1.2 parts of stone powder, 0.2-0.7 parts of edible salt, 0.005-0.015 parts of phytase, 0.05-0.15 parts of choline chloride, 0.05-0.15 parts of betaine, 0.1-0.3 parts of potassium butyrate,0.02-0.07 parts of thermostable yeast, 0.05-0.1 parts of multivitamins, 0.01-0.05 parts of organic ore and 0.3-0.7 parts of a carrier. The invention also provides complete feed prepared from the premix. The complete feed contains 50-70 parts of corn, 15-20 parts of soybean meal, 15-20 parts of wheat bran, 1-3 parts of soybean oil and 3-5 parts of the premix. The premix can improve the estrus rateand reduce limb hoof diseases of the replacement gilts under the condition of scale and intensification, and the intestinal health level and reproductive performance of the gilts are improved.

Description

technical field [0001] The invention belongs to the technical field of feed for gilts, in particular to a premixed feed and a full-price feed for improving the reproductive performance of gilts. Background technique [0002] In terms of nutrition and management of gilts, most of them now provide a nutritional program and feeding management for the back-up stage. However, the problem of feedback in large-scale pig farms is not paid attention to in many breeding links during the backup period, which affects the reproductive performance of sows. [0003] 1. Large-weight gilts do not go into estrus: Generally, gilts usually go into estrus for the first time at the age of six months and weigh about 80 kg, but in production, they often appear to be over-weight and have not yet experienced estrus, and even weigh up to 150 kg. Still not in heat. The utilization rate of gilts is greatly reduced every year because of lack of estrus. According to statistics, in intensive pig farms, ...

AI Technical Summary

Problems solved by technology

3. The proportion of stillbirths in primiparous sows is large: the proportion of stillbirths in primiparous sows is very high, especially around October each year, which makes long-term feeding invalid

4. No estrus after weaning of primiparous sows: Another worldwide problem is that primiparous sows do not go into estrus after weaning, and it accounts for a large proportion, as short as 10 days and a half months, and as long as more than one month or even longer

[0004] Analysis of the reasons for the problem of gilts: 1. Insufficient nutrition: Insufficient nutrition will cause the following losses: first, when vitamin A and E are lacking, the estrus time of sows will be significantly delayed; Phosphorus is relatively high. If the back-up pigs are fed with fattening pig feed, they will be weak and overwhelmed by boars during mating. This is also related to the elimination of three or four-parity sows due to limb and foot diseases; the third is back-up pigs The need for biotin is very high. If biotin is deficient, it will easily cause sows' hooves and foot pads to crack and bleed.

2. Immature physical development: The difference between gilts and multiparous sows is that gilts are immature in body development, small in size, and have limited body reserves; Insufficient milk; Primiparous sows are prone to dystocia. In addition to being small in size, external stimuli can also cause stress dystocia, which is more common in primiparous and timid sows. Strong stimulation, restlessness in standing and lying, abnormal contraction of the uterus, causing dystocia; if the mating age is advanced or the weight does not reach the specified standard, the above problems will become more obvious

3. Low antibody level of gilts: In addition to the yellow scour of piglets, this problem is sometimes reflected in the low level of swine fever antibody, and the occurrence of swine fever during lactation also occurs from time to time

4. Insufficient exercise of reserve pigs: Although it is not obvious in young pigs, after three or four litters, their physical fitness will deteriorate