caa a22 4500 388061146 CHVBK 20180307125121.0 cr unu---uuuuu 161130e199802 xx s 000 0 eng 10.1017/S135772980000895X doi S135772980000895X pii (NATIONALLICENCE)cambridge-10.1017/S135772980000895X Maize silage, grain sorghum silage and forage sorghum silage in diets with different proportions of concentrate for the finishing of weaner lambs [Elektronische Daten] The potential of diets, based on maize silage (M), non-bird-resistant grain sorghum silage (NBRGS), bird-resistant grain sorghum silage (BRGS) and forage sorghum silage (FS), in different proportions with concentrate for each silage, was evaluated for the finishing of weaner lambs. On a dry basis the ratios of silage: concentrate were 70: 30, 60:40, 50:50, 40: 60 and 30: 70 respectively for each of the silages. The concentrate mixtures were composed of different quantities of maize meal and soya-bean oilcake meal in order to balance the crude protein contents of the different diets used from weaning to 35 kg live weight and from 35 kg live weight to slaughter at 140 and 110 g/kg respectively. Better apparent digestibilities of dry matter, crude protein and acid-detergent fibre as well as food conversion to live weight were found for diets with M or NBRGS as roughage sources compared with those with BRGS and FS as roughage sources. At the lower levels of concentrate inclusion in the diets the dressing proportions, carcass grades and food conversion to carcass weight for the diets with M and NBRGS as roughage sources were also better than were those with BRGS and FS as roughage sources. Although higher levels of concentrate inclusion in the diets to a large extent rectified these biological disadvantages of the diets based on BRGS and FS, they will also cause a rise in the price of the diet. Copyright © British Society of Animal Science 1998 concentrates nationallicence finishing nationallicence lambs nationallicence maize silage nationallicence sorghum silage nationallicence Cilliers J. W. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa Cilliers H. J. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa Nel W. R. L. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa Animal Science Cambridge University Press 66/1(1998-02), 189-196 1357-7298 66:1<189 1998 66 ASC https://doi.org/10.1017/S135772980000895X text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S135772980000895X text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Cilliers J. W. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa NATIONALLICENCE 700 1- Cilliers H. J. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa NATIONALLICENCE 700 1- Nel W. R. L. North West Agricultural Development Institute, Private Bag X804, Potchefstroom 2520, South Africa NATIONALLICENCE 773 0- Animal Science Cambridge University Press 66/1(1998-02), 189-196 1357-7298 66:1<189 1998 66 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge