caa a22 4500 397542917 CHVBK 20180308164731.0 cr unu---uuuuu 161202s1995 xx s 000 0 eng 10.1093/japr/4.4.356 doi (NATIONALLICENCE)oxford-10.1093/japr/4.4.356 Free-Choice Feeding and Three Temperature Treatments [Elektronische Daten] [Milan Hruby, Melvin L. Hamre, Craig N. Coon] The experiment studied the effect of high environmental temperature on the nutrient requirements of growing broilers. Diets with increased concentrations of protein (amino acids) have been commonly use to overcome the reduction in feed intake and weight gain in birds exposed to higher temperatures. Broilers chose from two diets, one low and one high in protein. Production and slaughter variables were observed in male and female broilers reared under 21.1°C, 26.7°C, or 32.2°C for a period of nineteen weeks to evaluate the effect of temperatures and sex. As expected, the high environmental temperature significantly decreased body weight, average weight gain, feed intake, and weight of the cut-up carcass parts. Broilers reared under high environmental temperature chose a diet lower in total protein starting between 6 and 7 wk of age. Weight of the breast was negatively influenced by high temperature two weeks earlier (5 wk of age) than in the case of drumstick and thigh. © 1995 Applied Poultry Science, Inc. Broilers nationallicence cut-up carcass parts nationallicence free-choice feeding nationallicence high temperature nationallicence Hruby Milan Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut Hamre Melvin L. Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut Coon Craig N. Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut Journal of Applied Poultry Research Oxford University Press 4/4(1995), 356-365 1056-6171 4:4<356 1995 4 japr https://doi.org/10.1093/japr/4.4.356 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/japr/4.4.356 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Hruby Milan Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut NATIONALLICENCE 700 1- Hamre Melvin L. Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut NATIONALLICENCE 700 1- Coon Craig N. Department of animal Science, University of Minnesota, St. Paul, MN 55108; Phone: (612) 624-6263; FAX: (612) 625-5789 aut NATIONALLICENCE 773 0- Journal of Applied Poultry Research Oxford University Press 4/4(1995), 356-365 1056-6171 4:4<356 1995 4 japr Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford