环境温度、排空期时数对成年公鸡消化道残留内容物含量的影响

The Influences of Ambient Temperature and Removal Period of Digesta on the Residual Amounts of Dry Matter in Digestive Tract of Adult Roosters

采用 3× 2二因子析因设计 ,研究环境温度 (5～ 15、2 0～ 2 5、30～ 35℃ )、消化道排空期时数 (32和 48h)对消化道残留内容物含量的影响 .结果表明 ,环境温度显著影响绝食鸡消化道残留内容物干物质量 ,而且以低温 5～ 15℃时影响较大 ;排空期 32和 48h对胃、小肠、直肠和泄殖腔中内容物干物质含量差异不显著 ,而对盲肠内容物或整个消化道内容物总和有显著影响 .可见 。

A 3×2 factorial experiment was used to study the effects of ambient temperature, removal period of digesta on the residual amount of dry matter in the digestive tract of adult roosters.Ambient temperatures ranged from 5-15,20-25, 30-36℃. Removal periods of material in digestive tract were 32 or 48 h. The results indicated that the low ambient temperature affected significantly the residual amounts of dry matter in the small intestine,caeca, rectum and cloaca. The low ambient temperature groups had more dry matter than the moderate and high ambient temperature groups.When removal period was 32 h, there were more dry matter in the digestive tract than that of the 48 h group.