微藻的营养特性及其在反刍动物生产中的应用OA

Microalgae are a group of photosynthetic aquatic organisms that lack the true root,stem and leaf of higher plants.They have great potential as feed in ruminant production.Microalgae species with high protein content and reasonable amino acid composition can be used to replace traditional protein feeds,while those with high carbohydrate and fat contents can be used to provide energy for animals.Microalgae are rich in long-chain polyunsaturated fatty acids and have a positive effect on improving the quality of ruminant products and inhibiting methane production in rumen.Microalgae also contain natural pigments and bioactive polysaccharides that have beneficial effects on the health and reproduction of ruminants.Therefore,this article reviews the nutritional characteristics of microalgae and their effects on feed intake,growth,production performance,and rumen fermentation in ruminants.It also elaborates on the research progress regarding the addition of microalgae in improving the quality of ruminant products,inhibiting rumen methane production,enhancing the reproductive function of female ruminants,and improving antioxidant and immune functions,aiming to provide a reference for the rational application of microalgae in ruminant production.