caa a22 4500 386320934 CHVBK 20180307111626.0 cr unu---uuuuu 161130e198808 xx s 000 0 eng 10.1017/S0003356100037168 doi S0003356100037168 pii (NATIONALLICENCE)cambridge-10.1017/S0003356100037168 A note on the effect of variety, type of straw and ammonia treatment on digestibility and on growth rate in steers [Elektronische Daten] Forty Hereford cross steers of 350 kg live weight were allocated to 10 treatments in which straw was offered ad libitum. The straws comprised two varieties of winter barley (Gerbel (G) an Igri (I)), two varieties of spring barley (Corgi (C) and Golden Promise (GP)) and one variety of winter wheat (Norman (N)). Each straw was offered either untreated (with 20 g urea per kg added at feeding), or treated (with 30 g anhydrous ammonia). After 10 weeks the treatments were changed. The mean growth rates for steers receiving the untreated straws were 0·11, 0·13, 0·40, 0·20 and 0·27 kg/day and for treated straws were 0·36, 0·33, 0·61, 0·60 and 0·52 kg/day for G, I, C, GP and N respectively. The straw intakes for untreated straws were 3·4, 3·6, 5·2, 4·4 and 4·6 kg dry matter per day and for treated straws 4·7, 4·8, 5·9, 4·9 and 5·8 kg dry matter per day for G, I, C, GP and N respectively. Chemical and biological measurements were compared as predictors of voluntary intake of straw and growth rate in the steers. Biological measurements were very efficient in predicting performance of the steers while chemical measurements were much less valuable. Copyright © British Society of Animal Science 1988 Reid G. W. Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB2 9SB Ørksov E. R. Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB2 9SB Kay M. North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD Animal Production Cambridge University Press 47/1(1988-08), 157-160 0003-3561 47:1<157 1988 47 ASC https://doi.org/10.1017/S0003356100037168 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0003356100037168 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Reid G. W. Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB2 9SB NATIONALLICENCE 700 1- Ørksov E. R. Rowett Research Institute, Greenburn Road, Bucksburn, Aberdeen AB2 9SB NATIONALLICENCE 700 1- Kay M. North of Scotland College of Agriculture, 581 King Street, Aberdeen AB9 1UD NATIONALLICENCE 773 0- Animal Production Cambridge University Press 47/1(1988-08), 157-160 0003-3561 47:1<157 1988 47 ASC CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge