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Size of experiments for breed or strain comparisons


, : Size of experiments for breed or strain comparisons. Proceedings of the Working Symposium on Breed Evaluation and Crossing Experiments with Farm Animals, Zeist, 1974: 43-54

The optimum size of experiments for comparing breeds is discussed from the viewpoint of maximising the net monetary returns over the cost of the test. Two examples are given: (1) where a new breed is compared to a standard breed in current use, which is replaced if the new breed performs better in the test; (2) where a large number of breeds or strains are compared in a random sample test. Formulae are given for calculating the optimum number of replicates.

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