Thứ Hai, 8 tháng 10, 2012

Causes of differences in urinary excretion of purine derivatives in buffaloes and cattle

Cambridge Journals

(http://journals.cambridge.org/action/displayIssue?iid=779256)
(http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=779404&fulltextType=RA&fileId=S1357729806000439)

Vo Thi Kim Thanha1 and E. R. Ørskova2 c1

a1 Hue University of Agriculture and Forestry, 102 Phung Hung, Hue, Vietnam
a2 Macaulay Institute, Craigiebuckler, Aberdeen, AB15 8QH, UK
Abstract
In experiment 1, three male calves of Vietnamese cattle and three maleVietnamese swamp buffalo calves were weaned after receiving colostrum and reared by bottle feeding of milk. During the 1st month the animal did not have access to solid food. Urine was collected to determine differences in endogenous excretion of purine between the two types of animal. After that they were given access to equal amount of solid food for 2 months to stimulate rumen development, urine was again collected to determine the differences in purine excretion. In experiment 2, the same animals were given milk mixed with purines in three treatments (0, 1·7 and 3·4 g/day). The same animals were used in experiment 3 for intravenous allantoin infusion, to test the effect of purines themselves introduced into the plasma.The results showed that in period 1 of experiment 1 there was no significant difference in purine excretion between the two types of animal. The excretion being 0·65 mmol/kg M 0·75 for cattle and 0·69 mmol/kg M 0·75for buffaloes calves, respectively. For period 2, after rumen development there were significant differences between two types of animal. The excretion from buffaloes (0·26 mmol/kg M0·75) being less than half that of cattle (0·69 mmol/kg M 0·75).In experiment 2 the regression of purine excretion mmol/day (y) was y=0·6279x+9·1496 for cattle calves and y=0·2618x+5·8594 for buffalo calves where x was the purine given.In experiment 3, from each mmol of allantoin infusion, the recovery was about 0·70 in cattle but only half (0·32) in buffaloes ( P<0·01).It is clearly shown that the difference in purine derivative excretion occur only after rumen development It is suggested that glomerular filtration rate may be lower in buffaloes than cattle leaving more time in the blood thus more time for recycling to the rumen and metabolized by bacteria or the permeability from the blood to the rumen is greater in buffaloes than cattle.
(Received July 07 2005)
(Accepted December 29 2005)
Key words
  • buffaloes;
  • cattle;
  • purines;
  • rumen

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

(http://www.springer.com/life+sciences/book/978-1-4020-2802-1)
(http://inis.iaea.org/search/search.aspx?orig_q=RN:37064712)



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))
  • Language
  • English (1)
  • Copyright © 2010-2011 International Atomic Energy Agency (IAEA). All rights reserved. v3.2.0.20120806

Utilization of by-product from Soya bean for growing pigs


(http://www.mekarn.org/sarec03/thanhhue2.htm)


Tran Thi Thu Hong, Vo Thi Kim Thanh, Dao Thi Phuong,
Phung Thi Luu and E R Ørskov*

 Hue College of Agriculture and Forestry,
* International Feed Resource Unit, Macaulay Land Use Research Institute, Scotland, UK

 
Abstract

An experiment was carried out to determine the chemical and nutritive value of Soya bean residue (SBR), and effects on performance of growing crossbred (Large White × Mong Cai) pigs. The replacement levels were 0, 33, 66 and 99% of the fish meal. The experimental design was a 4*4 Latin square with periods of 10 days, 5 for adaptation and 5 for collection of faeces and urine.
The apparent digestibility coefficients for DM, OM and crude protein decreased slightly as the level of SBR in the diets increased with a significant reduction from the 66 to 99% fish meal replacement level. N retention showed a different trend with increases up to the 66% fish meal replacement, followed by lower values at the 99% replacement level, which did not differ from the N retention  observed on the control and 33% fish meal replacement level.
In an on-farm trial with 24 fattening pigs,  performance with 66% replacement of the fish meal by the Soya bean by-product was similar to that on the control diet, but with  superior economic returns.
Key words: Pigs, Soya bean residue, fish meal, crude protein, digestibility, growth, conversion
 

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FAO Online Catalogues


(http://www4.fao.org/cgi-bin/faobib.exe?rec_id=542332&database=faobib&search_type=link&table=mona&back_path=/faobib/mona&lang=eng&format_name=EFMON)

English title:Surveys on urban and rural livestock systems in central Vietnam
Authors:Vo Thi Kim Thanh
Corp.authors:Sveriges Lantbruksuniv., Uppsala (Sweden). Inst. foer Husdjurens Utfodring och Vaard
Publ.place:Uppsala (Sweden)
Publisher:Swedish Univ. of Agricultural Sciences, Dept. of Animal Nutrition and Management
Publ.date:2001
Collation:vp., illus., tables
ISBN:91-576-6043-3
Languages:English
Notes(59):Summaries (En), Thesis (M.Sc.) - Sveriges Lantbruksuniv., Uppsala (Sweden). Dept. of Animal Nutrition and Management. Includes bibliographies
IC/IY(2):LB02
AGROVOC main descr. :LIVESTOCK; FARMING SYSTEMS; SURVEYS
AGROVOC sec. descr.:LIVESTOCK NUMBERS; ECONOMIC SITUATION; FEEDING SYSTEMS; RURAL AREAS; URBAN AREAS
AGROVOC geogr. descr.:VIET NAM
Call No:338:636(597) V85
Holding library:RR
Acq. mode (91):E
Acc.No:397998
MFN:542332


A study of nutrient balance in selected urban and peri-urban communes in Hue City with high densities of livestock

Workshop-seminar, 23-25 May, 2005, MEKARN-CTU
Contents

(http://mekarn.org/workshops/proctu/thanh-hue.htm)

Vo Thi Kim Thanh

Hue University of Agriculture and Forestry
Hue, Vietnam
vokimthanh@hotmail.com

Abstract

Livestock give the urban and peri-urban people a considerable part of their income, but in many urban and peri-urban areas with high densities of livestock problems have occurred due to accumulation of nutrients, in particular N, P and K. This has resulted in pollution both of soil and drinking water. Hue city reported there were a large number of pigs, poultry, buffaloes and cattle in urban areas. With the information on nutrient balance i.e. the N, P and K entering and leaving the area and levels accumulating in soils and water courses, the study shows that along with high livestock densities a large percentage of the area is presenting nutrient overload. Approximately 4 tonnes/day of fresh manure could be collected from 370 households keeping animals in the study area, not including other waste such as liquid waste from the animal house.
Chemical composition of soil collected around the farm was 0.04% of P2O5 and 0.2% of K2O , and content of P and K in garden water was 1.5 and 6.4 micro-mol/litre, in a local pond 1.4 and 4 micromol/litre and from a river near the survey area 1 and 5 micromol/litre, respectively.
This study emphasizes the need for regulations that will be necessary to avoid large-scale future pollution.