The Application of Xylanase in Livestock and Poultry Nutrition

Livestock and poultry farming is a comprehensive and complex work, various problems may arise during the farming process leading to low quality of livestock and poultry, and even serious diseases and deaths. Therefore, workers in the livestock and poultry farming industry are constantly exploring how to improve the quality of livestock and poultry farming. With the continuous deepening of research, it is gradually recognized that nutrition plays an important role in the farming process. Therefore, discussing how to improve feed utilization and improve the system of livestock and poultry has become an important topic of research. Now, let's discuss the research progress of xylanase and its application in livestock and poultry nutrition.

Application of xylanase in poultry nutrition

Generally, xylanase enzyme is used in combination with a-amylase, pectinase, and β-amylase to be used in feeds made from materials like barley and wheat. Barley and wheat contain a large amount of non-starch polysaccharides, but the content of non-starch polysaccharides in corn is very low. Currently, over 80% of poultry basic feed worldwide contains xylanase enzyme, and the effect is similar to the best combination of corn and soybean meal in the industry.

After adding xylanase to poultry feed, there are significant improvements in the metabolic capacity, feed conversion rate, protein deposition rate, and weight gain of poultry, as well as an improvement in the situation of fecal contamination. However, the effect of xylanase enzyme is correlated with the age of poultry. The effect is very obvious for chicks between 0-4 weeks old, but the effect after 4 weeks is not significant.

Application of xylanase in pig nutrition

Most pig feed currently is in pellet form, and there is a high-temperature heating process during the production, with temperatures exceeding 75°C, which is above the upper limit of xylanase activity. Therefore, for xylanase to be promoted in pig feed, good heat stability is essential. At the same time, the site of xylanase action is in the pig's gastrointestinal tract, where the temperature is close to 37°C. To make xylanase work best, solving the stability of activity in the pellet-making process and the pig's gastrointestinal tract is a key issue.

Researchers have added a small amount of xylanase and β-glucanase to pig feed containing corn and soybean meal, and found that the digestibility rate of crude fiber showed a significant increase, reaching over 48%, and the digestibility rate of crude protein also increased by 16.5%. Compared to poultry, there is more research on xylanase in poultry farming, with more significant effects. Adding xylanase to pig feed can effectively reduce feed waste, saving costs. Related studies have shown that when applied with protease in piglet feed, it can effectively increase weight gain, reduce mortality rate, increase protein digestibility by around 3.5%, increase fiber digestibility by 17%, and increase protein deposition rate by over 9%.

A large number of studies have confirmed that adding xylanase to feed for livestock and poultry can improve their productivity, increase feed utilization, and save costs. According to the current application status, although there are still some shortcomings in the application process, it has very broad development prospects.

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