Effect of Seasonal Temperatures and Ascorbic Acid Supplementation on Performance of Broiler Chickens Maintained in Closed and Open-Sided Houses
Effect of Seasonal Temperatures and Ascorbic Acid Supplementation on Performance of Broiler Chickens Maintained in Closed and Open-Sided Houses
复制标题
季节温度和补充抗坏血酸对封闭式和开放式鸡舍肉鸡生产性能的影响
DOI：
10.3923/ijps.2008.655.660
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发表时间：
2008
期刊：
影响因子：
--
通讯作者：
Eugene H. Johnson
中科院分区：
文献类型：
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作者：
I. Kadim;B. H. A. Al;O. Mahgoub;W. Al;Eugene H. Johnson
研究了热季（环境温度36 ℃）和冷季（环境温度23 ℃）封闭式和开放式饲养条件下饮水中添加抗坏血酸对肉仔鸡生产性能的影响。在每个季节，家禽舍内的温度为26 ℃（封闭）、29 ℃（开放）、32 ℃。将鸟保持在23小时光照和1小时黑暗循环下，并随意提供水和饲料。将两个鸡舍中的肉鸡随机进行四种饮用水处理（每6个重复/处理中9只鸡）：0、100、200和300 ppm抗坏血酸。每周记录采食量、体重增加、饲料转化率和直肠温度。在炎热的季节，补充200-300 ppm的抗坏血酸与直肠温度降低有关。在高温季节，敞开式舍饲使增重和料肉比降低（P < 0.05）。与对照组相比，添加抗坏血酸可使采食量、增重和饲料转化率分别提高6%、9%和3%（凉季）和8%、11%和5%（热季）。冷季添加200 ppm抗坏血酸组的采食量、增重和料肉比显著高于对照组（P < 0.05），热季添加300 ppm抗坏血酸组的采食量、增重和料肉比显著高于对照组（P < 0.05）。在高温季节，敞开式鸡舍的直肠温度显著升高（P < 0.05），补充200-300 ppm抗坏血酸后直肠温度显著降低（P < 0.05）。本研究表明，季节性温度对开棚肉鸡生产性能有显著影响。在饮用水中添加200-300 ppm的抗坏血酸可改善高温开放式鸡舍中肉鸡的生产性能。
The efficacy of ascorbic acid in drinking water on performance of broiler chickens under closed and open-sided houses during hot (ambient temperature 36 C) and cool (ambient temperature 23 C) seasons o o were studied. The temperatures inside the poultry houses were 26 C (closed), 29 C (open-sided), 32 C o o o housed in each closed and open-sided environment for each season. Birds were maintained under 23 hrs light and 1 hr dark cycle and offered ad libitum access water and feed. Broilers in both houses were randomly subjected to four drinking water treatments (9 birds in each 6 replicates/treatment): 0, 100, 200 and 300 ppm ascorbic acid. Feed intake, body weight gain, feed conversion ratio and rectal temperatures were recorded weekly. Ascorbic acid supplementation at 200-300 ppm was associated with a reduction in rectal temperatures during the hot season. Open-sided house depressed body weight gain and feed conversion ratio (P < 0.05) during hot season. Compared to the control group, ascorbic acid improved feed intake, body weight gain and feed conversion ratio by 6%, 9% and 3% (cool season) and 8%, 11% and 5% (hot season). Birds supplemented with 200 ppm ascorbic acid had (P < 0.05) higher feed intake, body weight gain and feed conversion ratio than the control group during the cool season, while 300 ppm (P < 0.05) improved broiler performance including feed intake, body weight gain and feed conversion ratio during the hot season. Bird's rectal temperature was higher (P < 0.05) during hot season in open-sided house and (P < 0.05) reduced by supplementing 200-300 ppm ascorbic acid. This study demonstrated that seasonal temperatures had a significant effect on broiler performance in open-sided house. Supplementation of drinking water with 200-300 ppm ascorbic acid ameliorated broiler performance in open-sided housing at high ambient temperatures.