| Popis: |
An experiment was conducted to determine the effect of excess dietary Trp on growth and carcass characteristics of finishing pigs. A randomized complete block design was used and pigs were allotted to treatment on the basis of weight, ancestry, and sex. Average initial weight of the pigs was 55.1 kg, and the experimental period was 53 d. Each treatment was replicated four times with three pigs per replicate. A corn-soybean meal diet, formulated to provide .72% Lys and .12% Trp, was supplemented with 0, .05, .10, and .20% L-Trp, resulting in dietary Trp levels of .12, .17, .22, and .32%. Daily gain was not affected ( P >.10) by level of Trp. However, feed intake was increased (P P P >.10) by Trp addition to the diet. Excess Trp did not have a positive effect on growth or carcass characteristics of finishing pigs fed corn-soybean meal diets. |
