COMPARISON OF PURINE DERIVATIVES AND CREATININE IN PLASMA AND URINE BETWEEN LOCAL CATTLE AND BUFFALOES IN VIETNAM *

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Comparison of purine derivatives and creatinine in plasma and urine between local cattle and buffaloes in Vietnam
by Vo Thi Kim Thanh; Dao Thi Phuong; Tran Thi Thu Hong; Phung Thi Luu; Ngo Mau Dung; Hoang Quoc Hung (Department of Animal Physiology, Faculty of Animal Science, Hue University of Agriculture and Forestry, Hue (Viet Nam)); Orskov, E.R. (International Feed Resources Unit, Macaulay Institute, Craigiebuckler, Aberdeen (United Kingdom))

In Experiment I, 4 female swamp buffaloes and 4 local cattle fed with the diet based on young maize and rice straw (80/20), and in experiment II, the same number and types of animals as in Experiment I were fed with the diet based on rice straw and rice bran (70/30). The animals were fed twice a day with the diets at 40, 60, 80, 95% of ad libitum intake. The digestibility of nutrients and N excretion were similar for cattle and buffaloes. The purine derivative:creatinine ratio (PDC) index was significantly affected by the level of feed intake (P < 0.001) in both the species. Large differences in urinary purine derivative (PD) excretion were observed, being much lower in buffaloes than in cattle. The regression analysis showed that urinary PD excretion rate per kg of digestible organic matter intake for cattle was higher than that for buffalo. The PDC index also followed the same pattern. The nitrogen retention increased with the supply of energy, both in cattle and buffaloes, indicating that the protein supply was similar. There was no consistent effect of time of day on spot sampling in buffalo and cattle. Buffaloes urinated less frequently than cattle, so sampling time was not really relevant. (author)
SubjectAPPLIED LIFE SCIENCES (S60)
Source/ReportMakkar, H.P.S. (Animal Production and Health Section, Joint FAO/IAEA Division of Nuclear Techniques in Food and Agriculture, International Atomic Energy Agency, Vienna (Austria)), Chen, X.B. (International Feed Resources Unit, Macaulay Institute, Craigiebuckler, Aberdeen (United Kingdom)) (eds.), Estimation of microbial protein supply in ruminants using urinary purine derivatives, 218 p, ISBN 1-4020-2802-4, ISBN 1-4020-2844-X, 2004, p. 75-85, 6 refs, 5 figs, 12 tabs
Record TypeBook
Country/Org.Netherlands

LanguageEnglish
Ref. Number37064712
Rel. Record37064703
Publ. Year2004
Volume37
Issue27

• Country/Org.
• Netherlands (1)

• Language
• English (1)
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