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Two Latin squares balanced for carry-on effects were used for evaluation of productive performance of 12 Holstein cows fed high levels of fat under environmental temperatures: cool 15-24 C and hot 32.2 C, 60% relative humidity. The cows were fed 1.25 kg alfalfa-grass hay per 100 kg body weight and one Of three concentrates: control (without added lipids), oil (10% soybean oil), or fat (10% hydrogenated vegetable fat, iodine value 48) replacing corn on a weight basis.
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Moody et al. (1967) studied this question.
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