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Using clover/grass silage as a protein feed for dairy bull calves

Content Provider	Springer Nature Link
Author	Johansson, Birgitta Hessle, Anna Kumm, Karl Ivar
Copyright Year	2015
Abstract	Soybean meal (SBM) is globally used as a protein feed of good nutritional quality, e.g. for calves. However, the environmental impact of soybean cultivation is often questioned and SBM can therefore of ethical reasons be replaced by nitrogen-fixing forage and grain legumes and rapeseed products. In two experiments (exp.), we examined whether feeding dairy bull calves forages with a high inclusion of red clover together with cold-pressed rapeseed cake (CRC; exps. 1 and 2) and field bean (FB; exp. 2) met their protein requirement for proper growth, and calculated the profitability of using these diets. The calves were allocated to one of three protein feed treatments per experiment and studied from 97 to 275 kg live weight. In exp. 1, red clover/grass silage was combined with either smaller or greater amounts of CRC, which was compared with SBM. In exp. 2, red clover/grass silage, CRC and FB were combined with silage constituting 40, 50 or 60 % of DM in the total diet, to find the best combination. The profitability was calculated as value of calf gain minus feed costs. Soybean meal gave the highest live weight gain (LWG) and profitability in exp. 1, closely followed by the diet with greater amount of CRC together with clover/grass silage. In exp. 2, the diets with 40 or 50 % silage resulted in similar DM intake and LWG, both higher than with 60 % silage. At conventional prices, the 40 % silage diet had the highest profitability, whereas at organic prices, the 50 % silage diet was more profitable.
Starting Page	57
Ending Page	63
Page Count	7
File Format	PDF
ISSN	18794238
Journal	Organic Agriculture
Volume Number	6
Issue Number	1
e-ISSN	18794246
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-04-14
Publisher Institution	International Society of Organic Agriculture Research
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Clover silage Cattle Beef production Feed intake Live weight gain Profitability Agriculture Life Sciences Sustainable Development Environment Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Agricultural and Biological Sciences

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Using clover/grass silage as a protein feed for dairy bull calves

Profitability of organic and conventional dairy production with different dietary proportions of high-quality grass silage

INFLUENCE OF THE QUALITY AND THE LEVEL OF PROTEIN IN DIETS ON THE GROWTH RATE OF FATTENING BULL-CALVES

Cold-pressed rapeseed cake or full fat rapeseed to organic dairy cows—milk production and profitability

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Genetic variance components for residual feed intake and feed conversion ratio and their correlations with other production traits in beef bulls

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Using clover/grass silage as a protein feed for dairy bull calves

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Using clover/grass silage as a protein feed for dairy bull calves

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Cold-pressed rapeseed cake or full fat rapeseed to organic dairy cows—milk production and profitability

Resigning protein concentrates in dairy cattle nutrition: a problem or a chance?

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Using clover/grass silage as a protein feed for dairy bull calves