What benefits does probiotics bring to livestock and poultry breeding technology

Animals are often urged by high-density breeding techniques or other factors, which increase their sensitivity to diseases, and make their respiratory or digestive tracts vulnerable to the environment and poor breeding techniques. For a long time, antibiotics have been added to feed additives to prevent and control diseases and improve the efficiency of livestock production. However, if farmers do not follow the regulations, many pathogenic bacteria will become resistant to feed additives, and animal products may have drug residues. In recent years, due to consumers' demands for no drug residues and safe food, the issue of adding antibiotics to feed additives has gradually been paid attention to, and the research and development of probiotics instead of antibiotics has been paid more attention.

Microbial technology is widely used in agricultural production. The use of microbial technology in livestock production can improve animal growth, carcass quality, reproduction, nutrition, and feed utilization. In terms of animal nutrition, the addition of probiotics to new feeds and microorganisms with special functions are the core of the current microbial technology research and development. There are many types of microorganisms, so how to effectively use the research and development of more diversified microbial technologies and applications to replace the use of antibiotics and make livestock breeding technology production in line with environmental protection, safety and health industries is a top priority.

Probiotics are feed additives dominated by live bacteria. After being ingested by animals, they use the characteristics of probiotics to make them the dominant bacteria in the intestinal tract. The probiotics are used to adjust the flora in the intestinal tract and reduce the proliferation and colonization of pathogenic bacteria. Therefore, probiotics can improve the intestinal health of animals, increase the disease resistance of animals, and reduce the chance of using antibiotics. Generally speaking, the application effect of microbial technology on feed additives is controversial, because the physiological environment of the animal’s intestine is very complicated, which leads to whether the probiotic bacteria used can survive in the intestine and have biological activity. It is also controversial; and the appropriate timing of use, such as when the young animals or poultry are just born and the breeding environment conditions change, are the main factors that affect the effect of probiotics.

The research report pointed out that: as a feed additive, probiotics can improve the weight gain, feed conversion rate and reduce mortality of broiler chickens, but its effect will be affected by the bacterial species used in the feed additive, the number of bacteria and the method of use, and it can be raised with chickens Technical environment, urgency such as high temperature, humidity, feed change, transportation, etc. also have a lot to do with. Studies have also pointed out that the effect of probiotics on animal growth performance is not as significant as expected, but it can make the intestinal flora tend to be beneficial bacteria, reduce the number of potential pathogenic bacteria to improve intestinal health, and at the same time can reduce intestinal health. The ammonia concentration of the contents or feces shows the effectiveness of probiotics.

The application of probiotics in laying hens has effects such as increasing egg production, improving protein quality and calcium accumulation. At the same time, probiotics can reduce cholesterol in serum and egg yolk. For the latter, it has been the goal of laying hens for many years. Lactic acid bacteria form an acidic environment in the intestines. When the pH is less than 5.5, cholesterol and debinding bile salts will co-precipitate, thereby reducing the concentration of serum cholesterol. At the same time, due to the influence of the intestinal microbial technology metabolism, the absorption or synthesis of cholesterol is reduced.

Bacterial dysentery is the main cause of death from the newborn piglet to the weaning stage of the breeding technology, and it is also the breeding technology problem that the animal husbandry is most looking forward to solving. Among them, the toxin-producing E. coli infection accounts for a higher proportion. Studies have shown that at this stage of breeding technology, in addition to providing proper feed and good management, the provision of probiotics can reduce the incidence of enteritis; however, the effect of using probiotics in the growth and finishing stage of pigs is to promote growth, but does not prevent infection. The digestive tract of pigs is different from that of poultry, but there is no difference in the characteristics of probiotics used in pigs. Newborn piglets or chicks, because their digestive tract is sterile, provide probiotic strains as soon as possible so that probiotics can survive in the intestines and establish a healthy intestinal probiotic flora. In addition, if feed additives containing probiotics are given to sows at the end of pregnancy, the piglets can be effectively inoculated with probiotic strains through the birth canal and environment of the sows during delivery, and the effect will be more obvious.