Methods of Experimentation in Animal Nutrition

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Abstract
The unsatisfactory nature of the methods adopted in feeding experiments at Animal Nutrition Research Institutes has been shown to be due to the neglect of the worker to control variable factors, other than those being investigated, which affect the growth rate of his animals.It has been proved that age, sex (females and castrated males), condition and previous growth rate have no effect on the rate of live-weight increase of swine in the Cambridge University herd, and the basis on which animals are allotted to groups to ensure homogeneity is fallacious.