猪饲粮纤维的利用及其对养分消化的影响

doi:10.11843/j.issn.0366-6964.2023.09.015

Abstract

Abstract: The main pressure of food security in China is feed safety, and the important potential of solving food security is also feed safety. Due to the shortage of feed resources, the conflict between human and animals for food is increasingly intensified. Development of non-grain feed resources and improvement of feed nutrient utilization are important strategic to alleviate the contradiction of food security in China. Since the outline nutrient analysis method first invented by Henneberg and Stohmann in 1864, the test method of feed nutrients has been used for a century and a half, and the original system has basically remained unchanged. In view of the complexity and diversity of carbohydrate components in feed materials, the analysis methods and levels of analysis have evolved from Weende proximate crude fiber to van Soest fiber and total dietary fiber. The physical and chemical properties of dietary fiber such as viscosity, solubility and water holding capacity limit the digestion, absorption and utilization of itself and other nutrients in the diet by monogastric animals. The anti-nutritional effect of dietary fiber is affected by various complex factors such as diet structure, livestock and poultry breeds, physiological stages of animals, and environmental conditions. At the same time, the decomposition products of dietary fiber have important nutritional and health functions. Therefore, it is very important to analyze dietary carbohydrate composition and dietary fiber for nutrient digestion, absorption and utilization. This paper starts with the definition and connotation of dietary fiber, dissects the evolution of the analysis methods and levels of dietary carbohydrate components, analyzes the physicochemical properties of dietary fiber and its anti-nutritional mechanism, and summarizes the utilization characteristics of dietary fiber in pig digestive tract. Among them, the influence of dietary fiber level and type on the digestibility of main nutrients such as energy, protein, amino acids, and fat in pig diets was focused on analysis, and the mechanism of its influence was explained. Aiming to provide important reference for the development of non-grain feed resources and efficient utilization of dietary fiber.

Key words: dietary fiber, nutrient, digestibility, feed, pigs

CLC Number:

S828.4

CHEN Ying, ZHONG Ruqing, CHEN Liang, ZHANG Hongfu. Utilization of Dietary Fiber and Its Impact on Nutrient Digestion of Pigs[J]. Acta Veterinaria et Zootechnica Sinica, 2023, 54(9): 3745-3757.

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Utilization of Dietary Fiber and Its Impact on Nutrient Digestion of Pigs

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