首页|Nutrition strategies to control post-weaning diarrhea of piglets:From the perspective of feeds
Nutrition strategies to control post-weaning diarrhea of piglets:From the perspective of feeds
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Post-weaning diarrhea(PWD)is a globally significant threat to the swine industry.Historically,antibi-otics as well as high doses of zinc oxide and copper sulfate have been commonly used to control PWD.However,the development of bacterial resistance and environmental pollution have created an interest in alternative strategies.In recent years,the research surrounding these alternative strategies and the mechanisms of piglet diarrhea has been continually updated.Mechanically,diarrhea in piglets is a result of an imbalance in intestinal fluid and electrolyte absorption and secretion.In general,enterotoxigenic Escherichia coli(ETEC)and diarrheal viruses are known to cause an imbalance in the absorption and secretion of intestinal fluids and electrolytes in piglets,resulting in diarrhea when Cl-secretion-driven fluid secretion surpasses absorptive capacity.From a perspective of feedstuffs,factors that contribute to imbalances in fluid absorption and secretion in the intestines of weaned piglets include high levels of crude protein(CP),stimulation by certain antigenic proteins,high acid-binding capacity(ABC),and contamination with deoxynivalenol(DON)in the diet.In response,efforts to reduce CP levels in diets,select feedstuffs with lower ABC values,and process feedstuffs using physical,chemical,and biological approaches are important strategies for alleviating PWD in piglets.Additionally,the diet supplementa-tion with additives such as vitamins and natural products can also play a role in reducing the diarrhea incidence in weaned piglets.Here,we examine the mechanisms of absorption and secretion of intestinal fluids and electrolytes in piglets,summarize nutritional strategies to control PWD in piglets from the perspective of feeds,and provide new insights towards future research directions.
Laboratory for Bio-Feed and Molecular Nutrition,College of Animal Science and Technology,Southwest University,Chongqing 400715,China
Animal Breeding and Genetics Key Laboratory of Sichuan Province,Sichuan Animal Science Academy,Chengdu 610066,China
Yibin Academy of Southwest University,Yibin 644005,China
National Natural Science Foundation of ChinaNational Center of Technology Innovation for PigsSichuan science and Technology ProgramSouthwest University Graduate Student Research and Innovation Program
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