| Nitrogen excretion of adult sheep fed silages made of a mixed sward or of pure unfertilised grass alone and in combination with barley. | |
| | |
MedLine Citation:
|
PMID: 21888034 Owner: NLM Status: In-Process |
Abstract/OtherAbstract:
|
Four adult rumen-fistulated wether sheep were fed silages combined with barley. The silages consisted of 48% grasses, 28% legumes and 24% other forbs (GCF) or of pure grass (G). The swards received no mineral fertiliser. The dry matter (DM) and fibre contents were lower in GCF than in G. Crude protein content of DM in GCF and G were 145 g/kg and 102 g/kg respectively. DM content as ash, lipids and non-fibrous carbohydrates were rather similar in both silages. About 40g DM were offered per kg BW0.75 and day either as silage alone or as a mixture of silage and barley (60:40). Faecal N excretion was greater with GCF than with G. The proportion of faecal bacterial and endogenous debris N reached 75 and 73% when GCF or G was fed, respectively. Undigested dietary N represented about 20%, and water soluble N accounted for 5-6% of faecal N. GCF caused more urinary N than G. Barley reduced urinary N excretion when supplemented to GCF. No dietary influence on urinary non-urea nitrogenous compounds was shown. GCF caused higher urinary urea N excretion than G and barley reduced this fraction when replacing part of GCF. Based on the urinary urea N proportions, it is concluded that N intake exceeded N requirement for any of the four diets fed. Dietary supplementation of ruminally fermentable carbohydrates can reduce urinary N excretion and this improves the efficiency of utilisation of N in N-unfertilised biodiverse grassland/ruminant farming systems. |
| | |
Authors:
|
Katharina Seip; Gerhard Breves; Johannes Isselstein; Hansjörg Abel |
Related Documents
:
|
10720164 - Rye bread decreases serum total and ldl cholesterol in men with moderately elevated ser... 1787844 - Biochemical dynamics and hypocholesterolemic action of hibiscus sabdariffa (karkade). 846314 - Tissue lipid responses to 3-hydroxy-3-methylglutaric acid with different dietary fats. 7315774 - Serum lipids in humans fed diets containing beef or fish and poultry. 3003294 - Comparison of the effect of cell wall and hull fiber from canola and soybean on the bio... 11685434 - Combined effects of diets with reduced calcium and phosphate and increased fluoride int... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Archives of animal nutrition Volume: 65 ISSN: 1745-039X ISO Abbreviation: Arch Anim Nutr Publication Date: 2011 Aug |
Date Detail:
|
Created Date: 2011-09-05 Completed Date: - Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101222433 Medline TA: Arch Anim Nutr Country: England |
Other Details:
|
Languages: eng Pagination: 278-89 Citation Subset: IM |
Affiliation:
|
Department of Physiology, School of Veterinary Medicine Hannover, Germany. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
|
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Evaluation of complementary effects of 9,10-anthraquinone and fumaric acid on methanogenesis and rum...
Next Document: Effects of keratinase supplementation of corn-soybean meal based diets on apparent ileal amino acid ...