Spratt R S, McBride B W, Bayley H S, Leeson S
Department of Animal and Poultry Science, College of Biological Sciences, University of Guelph, Ontario, Canada.
Poult Sci. 1990 Aug;69(8):1348-56. doi: 10.3382/ps.0691348.
In vitro rates of O2 consumption were investigated using excised biopsies from the liver, ileum, magnum, and latissimus dorsi muscle of Hubbard (H) broiler-breeder hens fed four levels of ME intake. Diet had no effect on O2 consumption of any tissue. The overall mean initial O2 consumption (microL of O2 per mg of dry weight per h) for latissimus dorsi, liver, ileum, and magnum tissues were 4.38, 13.33, 10.54, and 8.01, respectively. The Na+ and K(+)-adenosine triphosphatase-dependent respiration (ouabain-sensitive respiration) was 16% of the initial rate for latissimus dorsi, liver, and magnum tissues and 22% for ileum tissues. Fasting heat production of H and Arbor Acre (AA) meat-type hens measured over 3 days following an initial 24-h fast was 219 and 216 kilojoules (kJ) per kg per day (1 kJ = .239 kcal). There were no strain differences in the partitioning of O2 consumption into tissue components of fasted H and AA hens. Fasting metabolism accounted for 75% of the maintenance energy requirement in the hens. The liver, gut, and reproductive tract, which together make up 5 to 6% of BW, account for 26 and 30% of the total energy expenditure in fed and fasted hens, respectively.
使用从采食四种代谢能（ME）摄入量水平的哈伯德（H）肉种母鸡的肝脏、回肠、输卵管膨大部和背阔肌获取的切除活检组织，研究了体外耗氧率。日粮对任何组织的耗氧量均无影响。背阔肌、肝脏、回肠和输卵管膨大部组织的总体平均初始耗氧量（每毫克干重每小时微升氧气）分别为4.38、13.33、10.54和8.01。钠钾-腺苷三磷酸酶依赖性呼吸（哇巴因敏感性呼吸）在背阔肌、肝脏和输卵管膨大部组织中占初始速率的16%，在回肠组织中占22%。在最初禁食24小时后的3天内测定的H和爱拔益加（AA）肉用型母鸡的禁食产热量为每千克每天219和216千焦（kJ）（1 kJ = 0.239千卡）。在禁食的H和AA母鸡中，耗氧量分配到组织成分中的比例没有品系差异。禁食代谢占母鸡维持能量需求的75%。肝脏、肠道和生殖道共占体重的5%至6%，分别占采食和禁食母鸡总能量消耗的26%和30%。
