caa a22 4500 397569491 CHVBK 20180308164837.0 cr unu---uuuuu 161202e199606 xx s 000 0 eng 10.3382/ps.0750711 doi (NATIONALLICENCE)oxford-10.3382/ps.0750711 Responses of Growing and Finishing Turkey Toms to Dietary Lysine [Elektronische Daten] [DIRK LEHMANN, MICHAEL PACK, HEINZ JEROCH] The present study investigates the lysine requirements of British United Turkey (BUT) Big 6 turkey toms from 8 to 12 and from 16 to 20 wk of age. Growth, feed conversion, and carcass quality responses to increasing dietary lysine levels were measured. From 8 to 12 wk of age (4.0 to 8.8 kg live weight), about 1.20% (4.0 g/Mcal ME) lysine in the diet was found to be adequate to obtain optimum growth and feed conversion. Nitrogen retention also tended to increase with elevated dietary lysine levels in growing turkey toms. From 16 to 20 wk of age (13.1 to 18.5 kg live weight), the highest lysine level of 0.96% (3.0 g/Mcal ME) appeared to be insufficient to maximize weight gain. It is concluded, therefore, that the dietary lysine requirement of finishing turkey toms is 0.96% lysine or higher. In addition to the growth response, a marked increase in breast meat deposition in response to dietary lysine could be observed in finishing turkeys. Increasing dietary lysine decreased intramuscular fat content and grill loss and increased the protein level in breast meat. © 1996 Poultry Science Association, Inc. Metabolism and Nutrition nationallicence lysine nationallicence turkey nationallicence growth nationallicence breast meat nationallicence requirement nationallicence LEHMANN DIRK Institute of Animal Nutrition, University of Halle-Wittenberg, P.O. Box 1, D-06099, Halle (Saale), Germany aut PACK MICHAEL Degussa AG, Applied Technology Feed Additives, P.O. Box 1345, D-63403 Hanau, Germany aut JEROCH HEINZ Institute of Animal Nutrition, University of Halle-Wittenberg, P.O. Box 1, D-06099, Halle (Saale), Germany aut Poultry Science Oxford University Press 75/6(1996-06), 711-718 0032-5791 75:6<711 1996 75 ps https://doi.org/10.3382/ps.0750711 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.3382/ps.0750711 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- LEHMANN DIRK Institute of Animal Nutrition, University of Halle-Wittenberg, P.O. Box 1, D-06099, Halle (Saale), Germany aut NATIONALLICENCE 700 1- PACK MICHAEL Degussa AG, Applied Technology Feed Additives, P.O. Box 1345, D-63403 Hanau, Germany aut NATIONALLICENCE 700 1- JEROCH HEINZ Institute of Animal Nutrition, University of Halle-Wittenberg, P.O. Box 1, D-06099, Halle (Saale), Germany aut NATIONALLICENCE 773 0- Poultry Science Oxford University Press 75/6(1996-06), 711-718 0032-5791 75:6<711 1996 75 ps Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford