Evaluation of biochemical and ultrasonographic measurements as indicators of undernutrition in cattle

Strydom, S., Agenäs, S., Heath, M. F., Phillips, C. J. C., Rautenbach, G. H. and Thompson, P. N. (2008) Evaluation of biochemical and ultrasonographic measurements as indicators of undernutrition in cattle. Onderstepoort Journal of Veterinary Research, 75 3: 207-213. doi:10.4102/ojvr.v75i3.96


Author Strydom, S.
Agenäs, S.
Heath, M. F.
Phillips, C. J. C.
Rautenbach, G. H.
Thompson, P. N.
Title Evaluation of biochemical and ultrasonographic measurements as indicators of undernutrition in cattle
Journal name Onderstepoort Journal of Veterinary Research   Check publisher's open access policy
ISSN 0030-2465
2219-0635
Publication date 2008-09-10
Sub-type Article (original research)
DOI 10.4102/ojvr.v75i3.96
Open Access Status DOI
Volume 75
Issue 3
Start page 207
End page 213
Total pages 7
Editor J. Boomker
Place of publication Onderstepoort, South Africa
Publisher Onderstepoort Veterinary Institute, Agricultural Research Council
Language eng
Subject C1
070204 Animal Nutrition
830301 Beef Cattle
Formatted abstract
Body condition scoring (BCS) gives an indication of the nutritional status of an animal and it is thus an invaluable management tool in domestic livestock systems. It is, however, subjective. This study aimed at identifying biochemical indicators which could be objectively used as an indicator of undernutrition in ruminants. Blood samples were collected from 50 cattle with BCS < 1 and from 50 cattle with BCS > 2.5, using a 0–5 scale, and analysed for albumin, urea, creatinine, fructosamine, beta-hydroxybutyrate, non-esterified fatty acids, total serum protein and haematocrit. Rumpfat and ribfat thickness and marbling relative index were determined ultrasonographically in 15 of the low BCS group and 13 of the high BCS group. The laboratory measure with the best predictive ability for severe undernutrition was albumin, which correctly classified 94 % of cattle, using a cut-off of 31.5 g/ℓ. In contrast to a previous study, our study did not find the fructosamine:albumin ratio to be an accurate test to indicate undernutrition in cattle. Ultrasonic measurement of subcutaneous rumpfat and ribfat proved to reliably predict undernutrition, but may, however be impractical for routine use under most field conditions.
Keyword Biochemical indicators
Body conditiioning scoring
Cattle
Ultrasonography
Undernutrition
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2009 Higher Education Research Data Collection
School of Veterinary Science Publications
 
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Created: Wed, 01 Apr 2009, 01:36:45 EST by Narelle Poole on behalf of School of Veterinary Science