The Thai Journal of Veterinary Medicine


Several investigations have shown that very young piglets utilize dietary fat very badly. Peo et al. (1957) reported that there was no significant difference in feed efficiency due to dietary fat to piglets from an age of 8 days up to an age of 28 days. But the appearance of the piglets improved when fat was added to the rations. Eusebio et al. (1965) found that increased fat levels in the diet did not im- prove the efficiency of feed utilization, and in general added fat tended to decrease the rate of gain. Nielsen et al. (1970) have indicated that piglets which receive sow milk up to an age of 8 weeks are able to utilize small amounts of animal fat in the creep feed. Results from a Danish experiment (Danielsen, 1974) showed that piglets weaned at 3 weeks have been able to utilize both lard and soybean oil in the diet up to an age of 10 weeks. Feed containing 5% lard yields better results than feed con- taining 5% soybean oil which is in agreement with results of trials conducted in the U.S.A. (Frobish et al., 1970). In order to gain a better knowledge of the ability of early weaned pigs to utilize animal fat in the rations, the experiment on which this report is based was conducted. The effect was evaluated on the basis of weight gain, feed uptake, conversion efficiency, and health of the pigs. Furthermore, the protein quality and the energy value of the diets were evaluated through chemical analyses and in experiments with rats.



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