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Whole-crop cereals for growing cattle

effects of maturity stage and chopping on intake and utilisation

Rustas, Bengt-Ove (2009). Whole-crop cereals for growing cattle. Diss. (sammanfattning/summary) Skara : Sveriges lantbruksuniv., Acta Universitatis Agriculturae Sueciae, 1652-6880 ; 2009:74
ISBN 978-91-576-7421-0
[Doctoral thesis]

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The effects of maturity and chopping of whole-crop cereal silage on intake, digestibility, live-weight gain and feeding behaviour of growing cattle were evaluated. Organic matter digestibility of whole-crop barley and wheat, mainly explained by fibre concentration and digestibility, decreased from the heading stage to the milk stage of maturity. In barley it did not change between the milk and dough stages, but in wheat it increased. In general, intake was greatest at the dough stage of maturity, probably due to higher dry matter content and lower fibre concentration of the whole-crop silages. Live-weight gain followed the same pattern due to the higher intake. Chopping increased intake, more so in light steers than in heavy, when whole-crop barley was harvested at dough stage, but not at heading stage. Lower intake of unchopped silage seemed to be caused by long awns affecting light steers more than heavy. Eating rate increased with chopping but rumination time was unaffected. In conclusion, whole-crop barley and wheat should be harvested at the heading or dough stage of maturity when fed to growing cattle and preferably chopped at dough stage.

Authors/Creators:Rustas, Bengt-Ove
Title:Whole-crop cereals for growing cattle
Subtitle:effects of maturity stage and chopping on intake and utilisation
Series Name/Journal:Acta Universitatis Agriculturae Sueciae
Year of publishing :2009
Number of Pages:60
ALLI B.-O. Rustas, J. Bertilsson, K. Martinsson and E. Nadeau (2009). Intake and digestion of whole-crop barley and wheat silages by dairy heifers (manuscript). II B.-O. Rustas, E. Nadeau and S. Johnsson (2009). Effect of stage of maturity of whole-crop barley on intake and liveweight gain by dairy steers differing in initial live weight. Grass and Forage Science 64(3), 227-235. III B.-O. Rustas, P. Nørgaard, A. R. Jalali and E. Nadeau (2009). Effects of physical form and stage of maturity at harvest of whole-crop barley silage on intake, chewing activity, diet selection and faecal particle size of dairy steers. Animal doi: 10.1017/S1751731109990887, published online 24 September 2009. IV B.-O. Rustas and E. Nadeau. Chopping of whole-crop barley silage improves intake and live-weight gain of young dairy steers (manuscript).
Place of Publication:Skara
ISBN for printed version:978-91-576-7421-0
Publication Type:Doctoral thesis
Full Text Status:Public
Agrovoc terms:cattle, feed crops, feed intake, digestibility, weight gain, feeding level, diet
Keywords:whole-crop cereal, growing cattle, intake, digestibility, live-weight gain, eating rate, diet selection
Permanent URL:
ID Code:2128
Department:(VH) > Dept. of Animal Environment and Health
Deposited By: Bengt-Ove Rustas
Deposited On:07 Oct 2009 00:00
Metadata Last Modified:02 Dec 2014 10:16

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