caa a22 4500 388060182 CHVBK 20180307125118.0 cr unu---uuuuu 161130e199812 xx s 000 0 eng 10.1017/S1357729800032938 doi S1357729800032938 pii (NATIONALLICENCE)cambridge-10.1017/S1357729800032938 Responses in the growth of body components of finishing lambs to additional metabolizable energy supplied from either grass silage or concentrates [Elektronische Daten] Two experiments involving 213 finishing lambs were carried out to examine the responses in growth rate and carcass composition to the addition ofmetabolizable energy (ME) to a mixed diet in theform ofeither grass silage concentrate. In the second experiment the performance of lambs offered silage only was also compared at equal intake with the performance of lambs given mixed diets. On average the silages contained 224 g dry matter (DM) per kg; 148 g crude protein (CP) per kg DM; 86 g ammonia-nitrogen per kg total nitrogen and 723 g digestible organic matter per kg DM. Concentrates were based on barley and soya-bean meal and contained 181 g CP per DM. Responses in carcass weight gain when additional ME was added to mixed silagelconcentrate diets in theform ofgrass silage and concentrates were 9·2 and 10·2 (s.e. 0·90) gIM] respectively in experiment 1 and 9·8 and 10-(s.e. 0·33) g/MJ respectively in experiment 2, and responses in energy retention in experiment 2 were 0·34 and 0-(s.e. 0·012) MJ/M] respectively. However carcass gain and energy retention sustained by a silage only diet were only 0·67 and 0·70 respectively of those sustained by a high-concentrate diet at the same ME intake. The diet did not significantly affect body or carcass composition. Copyright © British Society of Animal Science 1998 concentrates nationallicence growth nationallicence metabolizable energy nationallicence lambs nationallicence silage nationallicence Steen R. W. J. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR Johnston S. D. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR Kilpatrick D. J. Department of Agriculture for Northern Ireland Chestnutt D. M. B. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR Animal Science Cambridge University Press 67/3(1998-12), 503-512 1357-7298 67:3<503 1998 67 ASC https://doi.org/10.1017/S1357729800032938 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1357729800032938 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Steen R. W. J. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR NATIONALLICENCE 700 1- Johnston S. D. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR NATIONALLICENCE 700 1- Kilpatrick D. J. Department of Agriculture for Northern Ireland NATIONALLICENCE 700 1- Chestnutt D. M. B. Agricultural Research Institute of Northern Ireland, Hillsborough, Co. Down BT26 6DR NATIONALLICENCE 773 0- Animal Science Cambridge University Press 67/3(1998-12), 503-512 1357-7298 67:3<503 1998 67 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge