Bedding hygiene,cleanliness and lying behaviour for heifers housed on wood chip or straw deep bedding

The aim of this project was to compare the hygienic quality of the bedding, as well as the parasitic load, cleanliness and lying behaviour in heifers kept on either straw or wood chip deep bedding. Fourteen heifers kept in two pens were housed on straw or wood chip bedding for 43 days, after which the bedding material was switched for 43 additional days. Significantly more mould was found in wood chip than in straw and there was a tendency towards less yeast in wood chip. The heifers had a low faecal parasitic load. The results indicate that the wood chip treatment resulted in somewhat cleaner animals. The heifers had a significantly longer total lying time when kept on straw. In conclusion, wood chip deep bedding could be an option as bedding material, but the impact on hygiene of bedding material and lying behaviour needs to be further investigated.     

加深对"公共植保"、"绿色植保"的理解和认识

纵观我国植物保护工作的发展历史，可以看出，随着人们对自然界理解和认知的不断加深，在不同的历史时期，国家分别制定了不同的植保方针。如从20世纪50年代的“治早、治小、治了”到70年代的“预防为主、综合防治”的植保方针的改变，都是人们对植保工作认识上的一次飞跃。但是，不论是那种方针，人们都始终把植物保护工作视为农业生产中一项重要的保证农作物丰产丰收的一项技术措施。事实证明，我国的植物保护工作在“预防为主，综合防治”的方针指导下，通过加强生物灾害的预防与控制研究，在保障农作物安全和生态安全，提升农业综合生产能力，促进农业增效和农民增收，提升农业科技进步和可持续发展等方面做出了重大贡献!