Organic acid feed additive for improving growth performance of pigs

Abstract

The invention relates to an organic acid feed additive for improving the growth performance of pigs. The pigs at a fattening stage can have the symptoms of digestive function disorder and the like under the condition that factors such as a farm environment, a pig group, a feed, feeding management and the like are changed, so that adverse reactions such as low feed intake, slow growth and the like, which are one of main reasons of low growth performance of the pigs, are caused accordingly. The additive comprises fumaric acid, citric acid, succinic acid and propionic acid, wherein 3 to 5 or 6 to 8 mass parts of fumaric acid, 1 to 2 or 3 to 4 mass parts of citric acid, 4 to 6 or 2 to 4 mass parts of succinic acid and 3 to 5 mass parts of propionic acid are added into a feed for the pigs at the fattening stage; and 3 to 5 mass parts of fumaric acid, 1 to 2 mass parts of citric acid, 4 to 6 mass parts of succinic acid and 3 to 5 mass parts of propionic acid are added into a feed for ablactated piglets. The product is taken as a feed additive or a pig feed.

Description

Technical field: [0001] The invention relates to a pig feed additive for improving pig growth performance. Background technique [0002] Pigs in the fattening stage will have digestive disorders and other phenomena when factors such as farm environment, pig herd, and feed change. The resulting adverse reactions such as low feed intake and slow growth are the reasons for poor growth performance of pigs. One of the main reasons. [0003] In order to maximize the annual litter rate of sows in modern intensive pig raising, the lactation period of piglets is shortened from 5 to 6 weeks to 3 to 4 weeks. However, early weaned piglets are prone to diarrhea, accompanied by slow growth and high mortality. Weaned piglets aged 3 to 4 weeks under the dual pressure of nutritional and environmental changes usually show reduced feed intake, slow or no weight gain, prone to diarrhea, high morbidity, and even death. The acidic environment in the stomach of piglets before weaning is mainly ...

AI Technical Summary

Problems solved by technology

At the same time, under the stimulation of pathogenic microorganisms and various stress factors, the intestinal environment of piglets is disturbed, and pathogenic microorganisms proliferate in large quantities, producing and releasing harmful gases and toxins, resulting in changes in the morphology of intestinal mucosa, such as shedding of epithelial cells, villi Atrophy and changes in crypt hyperplasia caused by factors such as protein antigens and microorganisms reduce the functional surface area of ​​the intestinal mucosa, cause digestive disorders, and reduce the absorption capacity of the small intestine

A large amount of undigested chyme in the small intestine enters the large intestine, which increases the concentration of harmful acids produced by the microbial fermentation of the large intestine, causing an increase in the osmotic pressure in the large intestine, and a large amount of water seeps into the large intestine, causing diarrhea, causing serious loss of nutrients, electrolytes, and body fluids. Pig growth and development

In addition, diarrhea in piglets generally occurs one week after weaning, and weaned piglets cannot obtain passive immunity from breast milk to control diarrhea, and the active immune system of piglets does not mature until 6 weeks of age

At this time, the active immune system of piglets is still in a transitional stage, and the number of self-synthesized antibodies is limited. In addition, problems such as indigestion, low absorption rate, nutrient deficiency, and weak system caused by diarrhea further reduce the immune ability of piglets and delay the development of immune system. The development of the immune system, the inability to effectively control the growth and reproduction of pathogenic microorganisms, resulting in worsening diarrhea and even death