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Feeding value of high moisture ammonia-treated wheat straw for lambs

Published online by Cambridge University Press:  02 September 2010

C. L. Streeter ,
G. W. Horn  and
D. G. Batchelder
C. L. Streeter
Affiliation:
Animal Science and Agricultural Engineering Departments, Oklahoma Agricultural Experiment Station, Stillwater, USA 74078
G. W. Horn
Affiliation:
Animal Science and Agricultural Engineering Departments, Oklahoma Agricultural Experiment Station, Stillwater, USA 74078
D. G. Batchelder
Affiliation:
Animal Science and Agricultural Engineering Departments, Oklahoma Agricultural Experiment Station, Stillwater, USA 74078
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Abstract

1. Two experiments were conducted to determine the feeding value of high moisture wheat straw treated with ammonia. The straw was chopped, water added to attain 350 g dry matter per kg treated straw, then treated with 84 or 90 g anhydrous ammonia per kg wheat straw dry matter and stored in a large plastic bag.

2. In Experiment 1, the treated straw was provided ad libitum to lambs in individual pens with either a control supplement (molasses and minerals), or 200 or 400 g of a soya bean meal- or maize gluten meal-based supplement.

3. Lambs fed the control supplement consumed 24·8 g of treated straw dry matter per kg live weight and lost 32 g live weight per day during the 28-day study. Source of supplemental protein did not affect live-weight gain or treated straw consumption. Level of supplement increased live-weight gains (P < 0·01) but did not affect treated straw consumption.

4. In Experiment 2, the lambs were fed one of three levels of supplement that each supplied 58 or 116 g of crude protein per day. Supplemental protein level increased cellulose digestibility (P < 0·01) with no effect on hemicellulose digestibility. Protein level did not affect treated straw consumption or live-weight gain.

5. Supplement level decreased cellulose digestibility (P < 0·01), hemicellulose digestibility (P < 0·01), and treated straw intake (P < 0·01) but increased live-weight gain.

6. The results are discussed in relation to the effects of amount and type of supplemental protein and level of supplementation on utilization of the treated straw.

Type
Research Article
Information
Animal Production , Volume 36 , Issue 3 , June 1983 , pp. 481 - 487
Copyright
Copyright © British Society of Animal Science 1983

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References

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