TY  - JOUR
T1  - Effect of Dietary Energy and Sulphur Amino Acids Level on  Egg Production Traits in the Tropics
AU - , M. Chan-Colli AU - , M. Carvajal-Hernandez AU - , J. Segura-Correa AU - , L. Sarmiento-Franco AU - , R. Santos-Ricalde 
JO  - Journal of Animal and Veterinary Advances
VL  - 6
IS  - 10
SP  - 1209
EP  - 1213
PY  - 2007
DA  - 2001/08/19
SN  - 1680-5593
DO  - javaa.2007.1209.1213
UR  - https://makhillpublications.co/view-article.php?doi=javaa.2007.1209.1213
KW  - Dietary energy
KW  -sulphur amino acids
KW  -egg production
KW  -efforts
KW  -TSAA
AB  - A 3 × 2 factorial experiment was conducted with commercial hens to determine the effect of dietary energy (2600, 2700 and 2800 kcal of ME kg <SUP>1</SUP>) and total sulphur amino acids (TSAA, 0.65 and 0.71%) concentrations on egg traits of laying hens from 28-37 weeks of age. Birds (n = 240) were randomly assigned into 6 treatments. The energy x TSAA interaction was significant (p< 0.05) on feed, methionine, TSAA and energy intakes (p< 0.05). At 0.71% TSSA, feed (104.6, 102.1 and 95.9 g), methionine (0.42, 0.41 and 0.38 g) and TSAA (0.74, 0.73 and 0.68 g) intakes decreased as the dietary energy level of the diet increased, but were similar among levels of dietary energy for the hens fed 0.65% TSAA. The energy intake increased as the level of dietary energy of the hens fed 0.65% TSAA increased (261.1, 276.4 and 284.3 kcal) and it was similar among levels of dietary energy for hens fed 0.71% TSAA. Eggs from hens fed 0.71% TSAA were heavier than eggs from hens fed 0.65% TSAA (p< 0.05) (58.3 and 59.2 g, respectively). The level of energy had a quadratic effect on egg weight (58.5, 59.3 and 58.4 g). The results indicate that hens firstly fitted their feed intake based on TSAA content in the diet and secondly by the content of energy in the diet. Both dietary energy and TSAA intakes  influenced  the  egg  weight.  Hens  fitted  their  fed  intake  to  0.37  g  of methionine and 0.66 g of TSAA per day.
ER  -