[Effect of various types of ration on the digestive processes of ewe lambs].
Two groups of lambs of the same age (from two weeks to one year), breed, and live weight were given various types of rations: I - a 'concentrate' group, fed concentrates, and II -a 'haylage' group, fed rations in which roughage prevailed. After the completion of one year of age duodenal anastomoses were effected in three animals of each group. Balance and physiologic experiments were carried out with the animals in each group, that were supplied with fistulae. In the first experiment each group was given a ration of the same structure as that given up to the age of one year. In the second experiment the rations of the two groups were exchanged. In the third experiment both groups obtained one and same ration of the optimal size and structure. It was found that the feeding of growing animals with a given type of ration led to the adaptation of the digestive system to such diet, with best utilization of the individual feedstuffs.
D000222:Adaptation, Physiological; D000821:Animal Feed; D000818:Animals; D000831:Animals, Newborn; D004063:Digestion; D005260:Female; D006128:Growth; D012756:Sheep / Q000378:metabolism*
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