UNASSIGNED: The aim of this study was to evaluate the effect of protein reduction and supplementation of @entity4650 in male broiler diets. A total of 648 chicks of the Cobb 500 strain were distributed in a completely randomized design with six treatments and six replications with eighteen birds per experimental unit. The study comprised pre-starter (1-7  days), starter (8-21  days), growth (22-35  days) and final (36-45  days) phases. The first treatment consisted of a control diet formulated according to the requirements of essential @entity3534 for each rearing phase. The second and third treatments had @entity1131 ( @entity1131 ) reduced by 1.8 and 3.6 percentage points (pp) in relation to the control diet respectively. In the fourth treatment, @entity4650 was added to provide the same @entity3264 level as the control diet, and in the last two treatments, the broilers were supplemented with 1 and 2  pp of @entity3264 above that of the control diet respectively. The reduction in @entity1131 decreased the performance of broilers and the supplementation of @entity4650 did not influence performance when supplied in the diets with excess of @entity3264 . The lowest excreted @entity1568 values were observed in the control diet, and treatments 2 and 3, respectively, in comparison with treatments with the use of @entity4650 (5 and 6). Retention efficiency of @entity1568 was better in the control diet and in the treatment with a reduction of 1.8  pp of @entity1131 . It was verified that the serum @entity414 level decreased with the @entity353 . A reduction in @entity1131 levels of up to 21.3%, 18.8%, 18.32% and 17.57% is recommended in phases from 1 to 7, 8 to 21, 22 to 35 and at 36 to 42  days, respectively, with a level of @entity3264 at 5.32%, 4.73%, 4.57%, 4.38%, also in these phases.

Effect of @entity4650 supplementation on performance and XXXX balance of broilers fed low protein diets.

@entity3534 :: ('MESH:D000596', 'Chemical') :: ['amino acids'] @entity1568 :: ('MESH:D009584', 'Chemical') :: ['nitrogen'] @entity3264 :: ('D018698', 'Chemical') :: ['glutamate'] @entity353 :: ('MESH:D015431', 'Disease') :: ['CP reduction'] @entity1131 :: ('MESH:D011488', 'Disease') :: ['CP', 'crude protein'] @entity4650 :: ('CHEBI:16015', 'Chemical') :: ['l-glutamic acid'] @entity414 :: ('MESH:D014527', 'Chemical') :: ['uric acid']
@entity1568 :: (MESH:D009584,Chemical) :: ['nitrogen']
