Staff Publications

Staff Publications

  • external user (warningwarning)
  • Log in as
  • language uk
  • About

    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

    We have a manual that explains all the features 

Record number 41476
Title The effect of the quality of roughage on the course of Trypanosoma vivax infection in West African Dwarf goats. I. Organic matter intake, body weight change and efficiency of nitrogen metabolism.
Author(s) Dam, J.T.P. van; Hofs, P.; Tolkamp, B.J.; Zwart, D.
Source Livestock Production Science 53 (1998). - ISSN 0301-6226 - p. 69 - 80.
Department(s) Animal Production Systems
Publication type Refereed Article in a scientific journal
Publication year 1998
Abstract Twenty nine West African Dwarf goats were randomly allotted to either a diet of pelleted lucerne with a high N content (Crude protein level=172 g/kg DM; n=14) or chopped grass straw with a low N content (Crude protein level=68 g/kg DM; n=15). Nine animals fed lucerne and 10 animals fed grass straw were infected with Trypanosoma vivax to study its effects on feed intake and efficiency of N utilization during the first 6 weeks of infection. Infection reduced organic matter intake (OMI) from 55 (s.e. 2) to 38 (s.e. 2) g kg-0.75 d-1 (P<0.001). OMI was not affected by feed type (P>0.10). The relative decrease of digestible organic matter intake (DOMI) due to infection was the same in animals fed lucerne or grass straw (36 and 35%). Retention of N was lower in infected animals and in animals fed grass straw. By relating N retention to DOMI the efficiency of N utilization, corrected for feed intake level, was estimated. No effect of infection or feed type on the efficiency of N utilization was detected. One overall regression equation was estimated: N Retention=-0.45 (s.e. 0.04) 0.017 (s.e. 0.002)xDOMI (n=29; r2=0.86). Serum urea concentration was higher in the goats fed lucerne than in the goats fed grass straw; only in the lucerne group, infected animals showed a lower serum urea concentration post infectio (p.i.) than control animals. Serum creatinine concentration was higher in grass straw-fed animals than in lucerne-fed animals. From the former group, infected animals had a lower creatinine concentration p.i. than controls. It is concluded that infection affected feed intake, but not the efficiency of N utilization.
There are no comments yet. You can post the first one!
Post a comment
Please log in to use this service. Login as Wageningen University & Research user or guest user in upper right hand corner of this page.