产蛋鸡复合热缓解剂的研究

Studies on Applications of Heat-stress Alleviators to Laying Hens

采用热缓解物质组成的复合热缓解剂,于1989-1991年对福州和三明地区16个场(舍)10万余羽的产蛋鸡进行夏季高温期复合热缓解剂Ⅰ和Ⅱ配方重复对比试验,筛选出效果显著的Ⅱ配方,结果表明:试验组的产蛋率比对照组平均提高5.8％,料蛋比比对照组平均降低饲料0.21(8.5％),试验投人产出比平均为1:45。在日平均舍温26.4-33.2℃范围内,舍温愈高,湿度愈大,试验效果愈显著。

Two formulas of heat-stress alleviator complex (HSA CO. Ⅰ and HSA CO. Ⅱ) have been designed for laying hens based on the pahtophyisiological principles of beat stress. Some repetitious experiments aimed at comparing the effects of HSA CO. Ⅰ and HSA CO. Ⅱ on laying hens were undertaken in sixteen chicken farms/houses with a total number of more than one hundred thousands laying hens in Fuzhou and Sanming prefectures during the summer hot seasons from 1989 to 1991. The results indicated that the effectiveness of HSA CO. Ⅱ was significantly better than that of HSA CO, Ⅰ as compared to the control groups (without any HSA). The egg production rate in the test groups received HSA CO. Ⅱ was increased by 5.8% on the average. Feed-egg ratio (Feed conversion) in test groups was averagely increased by 8.5% as contrasted to the control groups. The input-output ratio was 1:4.5 on the average experiments showed that the higher the house temperature and humidity, the better the effectiveness of HSA CO Ⅱ as the house temperature ranged from 26.4℃ to 33.2℃.