笼养黑颈长尾雉能量摄入的季节变化

Seasonal Variations in Energy Intake of Black-necked Bar-tailed Pheasants in Cage

2005年10月至2006年9月采用全部收粪法实验和统计分析,对饲养于广西师范大学生物园的黑颈长尾雉(Syrmaticus humiae)进行了不同季节能量摄入的研究。实验测得了4个不同季节(全年12个月和12组温度)的总摄入能、代谢能、排泄能。结果表明,不同季节不同年龄组黑颈长尾雉的总摄入能、代谢能、排泄能与温度之间的相关性均存在显著差异,且随温度的升高而降低;能量消化效率有随温度升高而增大的趋势;相同季节里,4年组黑颈长尾雉的能量消化效率高于1年组黑颈长尾雉。对黑颈长尾雉而言,8月(30℃)的代谢能处于最低,30℃是否是最适温度,有待进一步探讨。

Energy intake of Black-necked Bar-tailed Pheasants（Syrmaticus humiae）,was measured in biological garden of Guangxi Normal University from Oct.2005 to Sep.2006.Six 4-year adults and six juveniles kept in cage were involved this experiment.The amount of food taken by pheasants was calculated by subtract the remaining from the food provided every day.All the excrements of trial pheasants were daily collected.The energy contained in the food and excrements was measured to get the net energy intake.The results showed that the gross energy consumption,metabolic energy and excrement energy varied seasonally and that was increase as temperature decreasing.There is significant difference in gross energy consumption,metabolic energy,excrement energy between adults and juveniles.There is a trend that the food digestibility of pheasants was increases as temperature increasing.In the same season,the food digestibility of adults was higher than that of juveniles.A minimum metabolic energy was detected in the 4-year adults and juveniles group in August.A further study is need to determine whether 30℃ is the optimal temperature for the Black-necked Bar-tailed Pheasants.