Ganovski Kh, Ivanov I
Vet Med Nauki. 1982;19(6):111-6.
Four experimental periods were followed up with fistulated sheep. During each period the animals were offered rations of different protein and carbohydrate ration. Experiments were also carried out to elucidate the physiology of the digestive processes, and the resorption and metabolism of the various nutrients. It was established that digestive and metabolic processes ran a best course at the protein to carbohydrate ration of 1:5.8. At 1:10 and 1:14.5% a carbohydrate depression set in which led to a certain drop of the coefficients of digestibility. The body was forced to excrete higher amounts of digestive juices with a higher content of organic mineral matter in the duodenal chyme. The digestive apparatus was said to be subjected to substantial stress during the conversion of the various feeds and their components into nutrients that were characteristic of the organism, their ratio being thoroughly different in principle in the feeds and in the animals body. Conversion was shown to start not in the blood and tissues but in the digestive tract.
对4个试验期的瘘管羊进行了跟踪研究。在每个试验期，给动物投喂不同蛋白质和碳水化合物比例的日粮。还进行了实验以阐明消化过程的生理学以及各种营养物质的吸收和代谢。结果表明，当蛋白质与碳水化合物比例为1:5.8时，消化和代谢过程最为顺畅。当比例为1:10和1:14.5时，出现碳水化合物抑制现象，导致消化系数有所下降。机体被迫排出更多的消化液，十二指肠食糜中的有机矿物质含量更高。据说在将各种饲料及其成分转化为机体特有的营养物质的过程中，消化器官承受着巨大压力，饲料和动物体内营养物质的比例原则上完全不同。研究表明，转化并非始于血液和组织，而是始于消化道。
