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- 저자 : 주양돈(Y.D.Joo) (검색결과 1 건)
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가금에서 폐쇄형 호흡열량계와 도체분석법으로 측정한 기초대사량의 비교
최철림,고태송,우경목,주양돈,박병석 한국축산학회 1994 한국축산학회지 Vol.36 No.6
The accuracy and linearity of heat production measurements with a closed-circut indirect animal calorimeter (apparatus) assembled in this laboratory were toted. The fasting heat production(basal metabolism) measured with the apparatus was compared with that obtained from the comparative slaughter analysis during a 3 day fasting period with 8, 11, 14, 17, 31, and 41 days-old male broiler chicks fed a commercial complete diet. The apparatus composed of a respiration chamber for animals, an air flow system and an oxygen(O₂) reservoir(spirometer). During operation of the apparatus, 2M NaOH solution absorbed the carbon dioxide (CO₂) produced and the gravimetric CO₂ was weighed as BaCO₃. The volume of water drawn into the reservoir instead of O₂ consumed was converted into the STP volume of the O₂. Daily O₂ consumption(r=0.993, n=5). CO₂ production(r=0.974, n=5) and the basal metabolism per bird determined by the apparatus were linearly correlated with the body weight(BW). Respiratory quotients(RQ) ranged between 0.8 and 0.9. A linear correlation was found between BW and the basal metabolism estimated by both of the apparatus(r=0.994, n=5) or comparative slaughter study(r=0.982, n=6). However, the basal metabolism per metabolic BW (㎏^(0.75)) determined by both respiration apparatus (r=-0.930, n=3) and comparative slaughter study(r=-0.958, n=4) decreased linearly in 8-17 day-old birds, thereafter, stable values were obtained. An average heat production of 118.91㎉/㎏^(0.75) measured by the apparatus was not different significantly from 113. 784㎉/㎏^(0.75) measured by comparative slaugher studies. The results indicates that the basal metabolism determined by the appratus was linear and almost same as that obtained by comparative slaughter studies. This means that the closed-circuit respirometer assembled in this study can be useful for the determination of heat production in small animals. Also endogenous urinary nitrogen (EUn) per basal metabolism (㎎/㎉) was increased with the body weight to 17 days old, but thereafter, the values were equillibriated. This indicated growing broilers did not have paralleled EUn per basal metabolism.
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