Feed additive for increasing lactation yield of sows in perinatal period

Abstract

The invention discloses a feed additive for increasing the lactation yield of sows in the perinatal period. A preparation method of the feed additive comprises the following steps: (1) treating a rawmaterial: removing villi on the surfaces of fresh immature siraitia grosvenorii and falling siraitia grosvenorii, and then adding fresh siraitia grosvenorii stems and leaves, wherein the adding amountof the siraitia grosvenorii stems and leaves is 1 / 5-1 / 4 of the weight of the siraitia grosvenorii; (2) carrying out subcritical water extraction: crushing the raw material obtained in the step (1), adding deionized water into the crushed material, wherein the weight of the added deionized water is equal to that of the crushed material, and carrying out the subcritical water extraction for 10-15min at the temperature of 150-160 DEG C under the condition that the pressure is 5-8MPa; after the extraction is finished, relieving the pressure and collecting extract; (3) concentrating: concentratingthe extract obtained in the step (2) into thick paste which has a relative density of 1.10-1.15 at the temperature of 70 DEG C so as to obtain the feed additive.

Description

technical field [0001] The invention belongs to the technical field of pig feed, and in particular relates to a feed additive for improving lactation of sows in the perinatal period. Background technique [0002] The perinatal period is critical because it is related to the reproductive performance of sows, and it has also attracted attention because of the many breeding problems. The most common problems in the perinatal period are constipation, dystocia, postpartum inflammation, low feed intake, no milk, failure to estrus and mating in time and Poor uniformity of piglets, yellow and white scour, etc., are generally called perinatal syndrome. At present, the common solutions for the perinatal period are: 1) Use lactation feed to improve nutrition, improve birth weight and piglet uniformity; 2) Use a large number of antibiotics to prevent inflammation; Oxytocin accelerates postpartum lochia discharge. [0003] In order to improve the birth weight of piglets and meet the ne...

AI Technical Summary

Problems solved by technology

In fact, the reason why sows are prone to dystocia and inflammation is that the piglets are uneven in size, the sows have a long labor process, insufficient productivity, postpartum lochia cannot be discharged in time, and sows have insufficient nutritional intake and poor resistance

Adding antibiotics can only assist in the treatment of infection, but cannot fundamentally reduce infection

Although oxytocin can enhance uterine contraction, it is not suitable for multiparous animals. It is even more disastrous for sows with abnormal fetal position and small pelvic cavity. Moreover, oxytocin will disrupt the balance of endocrine in the body, which is not conducive to the recovery of sows.

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