Pakistan Journal of Nutrition1680-51941994-7984Asian Network for Scientific Information10.3923/pjn.2012.837.840A.A. ElagibHind ElzubeirE.A. 92012119This experiment was conducted to study the effect of high
environmental temperature on growth performance, mortality of broiler chicken
using graded level of methionine at two different levels of energy. Two hundred
and forty day old chick Ross were used. Six dietary treatment with 3050 kcal/kg
and 2850 kcal/kg and three levels of methionine 0% (NRC, 1994 level), 0.2%,
0.4% above the NRC (1994) level were fed to each group with four replicate ten
birds each. The body weight gain, feed consumption, feed conversion ratio, water
intake and mortality were evaluated. Birds fed diet with low energy diet (2850
kcal/kg) supplemented with 0.2% methionine above the NRC level (1994) attained
significantly (p<0.05) higher body weight gain compared to those fed high
energy (3050 kcal/kg) with 0.4% methionine. No significant (p>0.05) effect
of the two different levels of energy on body weight gain was found. In low
energy diets (2850 kcal/kg) the higher levels of methionine added to the diets
resulted in significantly (p<0.05) improved feed conversion ratio as compared
to non supplemented groups. In contrast, the birds fed high energy diet had
no difference in feed conversion between the different groups. The birds fed
low energy diet (2850 kcal/kg) had significantly (p<0.05) higher feed intake
than those fed high energy diet (3050 kcal/kg). No statistical significant effect
of different levels of methionine on mortality. Water intake increase in birds
fed diet with 2850 than those fed 3050 kca/kgME.]]>Baghel, R.P.S. and K. Pradhan,198930295304Balnave, D. and T.M. Abdoellah,199041549555Leeson, S. and J.D. Summers,20004th Edn.,NRC.,19949th Edn.,Pages: 176Pages: 176Ojano-Dirain, C.P. and P.W. Waldroup,200211621Temim, S., A.M. Chagneau, S. Guillaumin, J. Michel, R. Peresson and S. Tesseraud,200079312317Ribeiro, A.M.L. and A.M. Penz Jr., 200110419426Ribeiro, A.M.L., F. Dahlke and A.M. Kessler,20057159164Scott, T.A. and D. Balnave,198829613625Scott, T.A. and D. Balnave,198930135150Whitaker, H.M.A., A.A. Mendes, E.A. Garcia, R.O. Roca, J.C. Varolli Jr. and E.P.B. Saldanha,20022002Zuprizal, M. Larbier, A.M. Chagneau and P.A. Geraert,199372289295Zarate, A.J., E.T. Moran Jr. and D.J. Burnham,2003123744