Kienholz E W, Young N S, Smith J L, Whiteman C A
Poult Sci. 1981 Apr;60(4):884-6. doi: 10.3382/ps.0600884.
Diets containing 20% of air-dried anaerobically digested Fort Collins sewage sludge were fed to broiler chicks. The diets were balanced in protein and had the same vitamin and mineral supplement. The sludge diets containing approximately 2,500 ME kcal/kg compared to 3,000 ME kcal/kg in the control feed. Birds gained less body weight on sludge diets and liver vitamin A levels were reduced. Extrusion of cord-sludge mixture prior to diet formulations made the diet much poorer for supporting growth, reduced feed efficiency, and lowered liver vitamin A levels. It was concluded that ingestion of the sewage sludge impaired the utilization of vitamin A from the diet.
将含有20%风干厌氧消化的柯林斯堡污水污泥的日粮喂给肉鸡雏鸡。这些日粮的蛋白质含量均衡，且维生素和矿物质补充剂相同。污泥日粮的代谢能约为2500千卡/千克，而对照饲料为3000千卡/千克。食用污泥日粮的鸡体重增加较少，肝脏维生素A水平降低。在日粮配制前对污泥混合物进行挤压处理，使得日粮在支持生长方面变得更差，饲料效率降低，肝脏维生素A水平下降。得出的结论是，摄入污水污泥会损害日粮中维生素A的利用。
