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Urea Kinetics in Wethers Exposed to Different Ambient Temperatures at Three Dietary Levels of Crude Protein 원문보기

Asian-Australasian journal of animal sciences, v.18 no.6, 2005년, pp.795 - 801  

Sun, Sang-Soo (Department of Animal Science, Institute of Biotechnology, Chonnam National University) ,  Christopherson, Robert J. (University of Alberta)

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Eighteen Suffolk wether lambs (BW = 24 kg) were chronically exposed to temperatures of cold (2$^{\circ}C$) or warm (22$^{\circ}C$). The experimental design consisted of a 2${\times}$3 factorial with a single crossover of environment treatment. The sheep were closely ...

주제어

#Urea Recycling   #Urea Flux   #Crude Protein   #Cold   #Sheep  

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제안 방법

  • Plasma was immediately separated by centrifugation at 1,500xg for 10 minutes. Nine urine samples were collected from each wether in containers without acid surrounded by ice (to prevent microbial action) at 3, 6, 9, 12, 15, 18, 24, 36 and 48 h after injection. Urine was directed into the collection bottles by using a rubber funnel which was attached snugly to the abdomen below the prepuce ofthe lambs with elastic straps.
  • Therefore, animals may be better able to conserve N in a cold environment and be less constrained by a low nitrogen diet than animals in a warm environment. The present study was designed to examine this question by measuring urea metabolism at different dietary CP levels in growing lambs exposed to two ambient temperatures.

대상 데이터

  • Treatments were designed as W7, W11, W14, C7, C11 and C14, respectively. During the temperature adaptation periods, sheep were accustomed to the urine collection funnel which was attached to the abdomen.
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    상세보기 crossref

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    상세보기 crossref

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