Two experiments were conducted to investigate the influence of a warm environment (35 degrees C) on the @entity1889 and @entity2340 requirements of young broiler chicks from 7 to 18 or 21 d of age. Seven hundred forty (experiment 1) and one thousand eight (experiment 2) 1-d-old Cobb x Cobb straight-run broiler chicks were raised in wire-floored battery brooders in moderate temperature rooms (33 to 34 degrees C). For the first 7 d, all chicks were fed a standard @entity4336 - @entity1460 -meal-based crumbled starter diet. On d 7, six chicks each (experiment 1) and eight chicks each (experiment 2) were randomly assigned to individual pens. In experiment 1, chicks were fed a @entity4336 -peanut meal basal diet supplemented with six levels of @entity1889 (0.630, 0.651, 0.673, 0.715, 0.758, or 0.800% of the diet). In experiment 2, chicks were fed a @entity4336 - @entity4336 gluten meal based basal diet supplemented with six levels of @entity2340 (0.090, 0.115, 0.140, 0.165, 0.190, or 0.215% of the diet). Each dietary treatment was repeated with three pens in each room and three rooms at each temperature. Three rooms were set at a moderate temperature of 25 degrees C, and the other three rooms were set at a warmer temperature of 35 degrees C. Body @entity1017 , feed consumption, and feed conversion ratio were measured. The @entity1889 requirements of young broiler chicks were 0.733 +/- 0.016% (R2 = 0.59) and 0.752 +/- 0.046% (R2 = 0.25) for body @entity1017 , and 0.744 +/- 0.016% (R2 = 0.67) and 0.722 +/- 0.016% (R2 = 0.47) for feed conversion ratio at 25 and 35 degrees C, respectively (broken-line linear model). The @entity2340 requirements of young broiler chicks were 0.151 +/- 0.004% (R2 = 0.85) and 0.144 +/- 0.003% (R2 = 0.89) for body @entity1017 , 0.144 +/- 0.003% (R2 = 0.88) and 0.142 +/- 0.003% (R2 = 0.88) for feed consumption, and 0.146 +/- 0.005% (R2 = 0.76) and 0.127 +/- 0.002% (R2 = 0.94) for feed conversion ratio at 25 and 35 degrees C, respectively. On average, the @entity1889 and @entity2340 requirements of broiler chicks at 35 degrees C were very similar to those kept at 25 degrees C.

The influence of temperature on the @entity1889 and XXXX requirements of young broiler chicks.

@entity4336 :: ('381124', 'Species') :: ['corn'] @entity2340 :: ('CHEBI:27897', 'Chemical') :: ['tryptophan'] @entity1017 :: ('MESH:D015430', 'Disease') :: ['weight gain'] @entity1460 :: ('3847', 'Species') :: ['soybean'] @entity1889 :: ('CHEBI:26986', 'Chemical') :: ['threonine']
@entity2340 :: (CHEBI:27897,Chemical) :: ['tryptophan']
