PDF(Pubmed)
Abstract：
Organic livestock farming is committed to high environmental and animal welfare standards, although pathologies such as post-weaning diarrhoea (PWD) may appear. The main objective of this study was to assess nutritional strategies to prevent PWD in organic piglets. A total of 134 weaned piglets were fed one of three diets: high crude protein (17.8%, HCP), low crude protein (16.8%, LCP), and low crude protein supplemented with liquid whey (LCP+W). Piglets were assessed weekly for four weeks on the following parameters: diarrhoea incidence, additional health parameters, average daily gain, and behaviour. Faecal samples were taken to analyse the intestinal microbiota composition. Data were analysed using LMM and GLMM models and Shannon and Whittaker indexes. No significant effect of diet on diarrhoea incidence was found, but the LCP+W diet increased average daily gain. Pigs fed the LCP+W diet presented a lower percentage of drinking and negative social behaviour compared with the HCP diet, and LCP pigs presented higher exploration compared with HCP. In addition, LCP+W piglets showed a higher abundance of the beneficial genus Frisingicoccus. Although liquid whey did not reduce diarrhoea incidence, the benefits found in growth, microbiota composition, and reduced negative social behaviour indicate that it could be an optimal supplement to organic diets.
摘要：
有机畜牧业致力于高环境和动物福利标准，尽管可能会出现断奶后腹泻（PWD）等病理。这项研究的主要目的是评估有机仔猪预防PWD的营养策略。共饲喂134头断奶仔猪三种日粮中的一种:高粗蛋白(17.8%,HCP),低粗蛋白(16.8%，LCP),和补充有液体乳清(LCP+W)的低粗蛋白。每周对仔猪进行评估，为期四周，包括以下参数：腹泻发生率，额外的健康参数，平均每日收益，和行为。取粪便样品以分析肠道微生物群组成。使用LMM和GLMM模型以及Shannon和Whittaker指数对数据进行分析。饮食对腹泻发病率没有显著影响，但LCP+W饮食增加了平均日增重。与HCP饮食相比，饲喂LCPW饮食的猪呈现较低的饮酒百分比和负面社交行为，与HCP相比，LCP猪表现出更高的探索。此外,LCPW仔猪显示出较高的有益菌属Frisingicocus。尽管液体乳清并不能减少腹泻的发生率，在增长中发现的好处，微生物群组成，减少的负面社会行为表明，它可能是有机饮食的最佳补充。
