Hostname: page-component-848d4c4894-cjp7w Total loading time: 0 Render date: 2024-07-06T04:11:31.516Z Has data issue: false hasContentIssue false

The effect of feeding supplementary mixtures of tree leaves on nitrogen utilisation in sheep

Published online by Cambridge University Press:  20 November 2017

C J Powell
Affiliation:
Natural Resources Institute, Chatham Maritime, Chatham, Kent, ME4 4TB
C E Lascano
Affiliation:
CIAT, AA 6713, Cali, Colombia
D L Romney
Affiliation:
Natural Resources Institute, Chatham Maritime, Chatham, Kent, ME4 4TB
M Gill
Affiliation:
Natural Resources Institute, Chatham Maritime, Chatham, Kent, ME4 4TB
Get access

Extract

The potential benefits of mixing leaves containing high and low levels of condensed tannin (CT) on N utilisation in sheep was studied at the Centro Internacional de Agricultura Tropical (CIAT), Colombia.

Supplements of Cratylia argentea (Ca) (tannin free), replaced with 0, 25, 50 or 100% Flemingia macrophylla (Fm) (25.1 g CT/kg DM) were fed as 40% of total ration DM (85g/M0·75), the remainder coming from Brachiaria dictyoneura (Bd). Treatments were offered in a replicated 4x4 latin square to eight male African Hair sheep (mean liveweight 23 (s.e. 1.5) kg), fistulated at the rumen and proximal duodenum (T-piece). Total collections of urine and faeces were used to estimate apparent N retention. Ammonia concentration was measured in rumen liquor samples taken hourly over 24 hours, while duodenal flows were estimated from spot samples using Ytterbium chloride as a single phase marker.

Type
Sheep Nutrition
Copyright
Copyright © The British Society of Animal Science 1995

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)