Use of industrial @entity1522 to allow low protein concentrations in finishing diets for growing XXXX .

@entity22157 @entity1522 @entity1131 @entity1853 @entity2340 @entity1573 @entity4556 @entity376 @entity1889
1. Three experiments were performed to assess the effects of decreasing protein concentration in the finishing diets for growing @entity22157 (8 to 12 weeks of age) by adding 4 essential @entity1522 ( @entity4556 , @entity376 , @entity1853 , @entity1889 and @entity2340 ). Experimental diets with @entity1131 ( @entity1131 ) contents from 105 to 142 g/kg, were compared with control diets providing 150 to 160 g/kg @entity1131 . In each trial, all diets were isocaloric. No significant modification in growth or carcase quality was observed when @entity1131 was greater than 124 g/kg in diets supplemented with the 4 essential @entity4556 . 2. There was no advantages in supplying more than 4.3 g of digestible @entity376 per kg of diet (12.75 MJ ME/kg). When @entity1889 was not added, breast yield decreased significantly (-4.3%), while omitting @entity2340 supplementation did not influence performance. 3. Furthermore, the experiments confirmed that reducing @entity1131 had little or no effect on food conversion efficiency and fatness in @entity22157 ducklings, unlike the observed situation in broiler @entity1573 .
