EVALUATION OF BLOOD MEAL AS A PROTEIN SOURCE FOR YOUNG PIGS

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Abstract
Three semi-purified diets containing 20% protein from either soybean flour, or blood meal, produced either by freeze-drying, or a commercial process, were each fed to eight piglets weaned at 21 days of age. Feed consumption and growth between 24 and 32 days of age were measured for each piglet; there were no significant differences in the amounts of feed consumed, but the piglets receiving either of the blood meal diets gained significantly less weight (1.31 and 1.13 kg for the freeze-dried, and commercial blood meals, respectively) than those receiving the soybean protein diet (1.70 kg). Apparent digestibilities of the amino acids in the freeze-dried blood meal were similar to those in the soy protein flour, but those in the commercial sample of blood meal were significantly lower. The apparent digestibilities of the lysine in the soy protein, freeze-dried blood meal and commercial blood meal were 86, 88 and 78%, respectively.

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