Premix capable of improving reproductive performances of nursing sows and complete feed

Abstract

The invention discloses premix capable of improving the reproductive performances of nursing sows, a preparation method of the premix and complete feed containing the premix. The premix is prepared from the following raw materials in parts by weight: 0.05 to 0.3 part of choline chloride, 0.05 to 0.5 part of betaine, 0.1 to 0.5 part of potassium butyrate, 0.05 to 2 part of high-temperature-resisting yeast and 0.5 to 3 parts of inulin; the complete feed contains 4 percent to 12 percent of the premix in weight percent. Aiming at the physiological characteristics of the nursing sows from a later pregnancy to a lactation period, the premix and the complete feed have the advantages of reasonable formula, comprehensive nutrients and high pertinence; the problems in the prior art that the nursing sows in a livestock farm have is low in reproductive performances including low feed intake, low fertility rate, high death and culling rate and the like are solved.

Description

technical field [0001] The invention belongs to the field of animal feed manufacturing, and in particular relates to a premixed feed and a complete feed for improving the reproductive performance of lactating sows, and a preparation method thereof. Background technique [0002] Lactating sows need a feeding method different from that of ordinary pigs in terms of nutrition and management. Now most of the breeding can provide a unique nutritional plan and feeding management for the lactation stage. However, according to feedback from large-scale pig farms, sows in large-scale farming have completely different physiological characteristics during the perinatal and lactation periods, and more targeted feed and feeding methods are still needed. [0003] The peripartum period is a special period for pregnant sows during prepartum and 3 days after parturition. Since the feeding of pigs uses "week" as the unit, the peripartum period is set as 1 week before parturition to 1 week afte...

AI Technical Summary

Problems solved by technology

[0004] The physiological characteristics of sows in the peripartum period are manifested in three aspects: A. 1 week before delivery is the period when the fetus grows rapidly and the sow prepares for childbirth and lactation. The pressure is very high, sows are burdened heavily, and it is difficult to stand. Secondly, sows’ blood pressure rises, heartbeat speeds up, oxygen consumption increases, and feed intake drops sharply, which leads to sows being in a state of negative energy balance and physical fitness decline; B , childbirth, a large amount of physical energy is consumed during childbirth, and the normal labor process can be completed within 2 to 3 hours. However, the sows have a negative energy balance before delivery, and the environmental stress of intensive breeding results in prolonged labor and increased