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Influence of Hoary Alyssum (Berteroa incana) on Quality of Alfalfa (Medicago sativa) Forage and Its Utilization by Goats

Published online by Cambridge University Press:  12 June 2017

Gilles D. Leroux ,
R. Gordon Harvey ,
Neal A. Jorgensen  and
Michael Collins
Gilles D. Leroux
Affiliation:
Dep. Agron., Univ. of Wisconsin, Madison, WI 53706
R. Gordon Harvey
Affiliation:
Dep. Agron., Univ. of Wisconsin, Madison, WI 53706
Neal A. Jorgensen
Affiliation:
Dep. Dairy Sci., Univ. of Wisconsin, Madison, WI 53706
Michael Collins
Affiliation:
Dep. Agron., Univ. of Wisconsin, Madison, WI 53706
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Abstract

The chemical composition and the utilization by domestic goats (Capra hircus L. ‘Saanen’) of alfalfa (Medicago sativa L.) hay and silage that contained or did not contain hoary alyssum [Berteroa incana (L.) DC. ♯ BEFIN] was studied. Alfalfa was higher in quality than hoary alyssum; crude protein (CP) was 38% higher, and the neutral- and acid-detergent fiber (NDF and ADF) were 18 and 29% lower, respectively. Less CP and more ADF were found in weedy hay than in other forages. Animal utilization, as measured by the dry-matter intake, digestible dry-matter intake, relative intake, and nutritive value index were greater for weed-free than for weedy forages. Hoary alyssum was more deleterious in chopped silage than in long hay, because of selective refusal of the weed by goats that were fed hay. The presence of hoary alyssum in alfalfa decreased its utilization by ruminants.

Keywords

Forage qualityalfalfa hayalfalfa silageBEFIN
Type
Special Topics
Information
Weed Science , Volume 33 , Issue 2 , March 1985 , pp. 280 - 284
Copyright
Copyright © 1985 by the Weed Science Society of America 

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