Bottje W G, Harrison P C
Poult Sci. 1985 Jul;64(7):1285-92. doi: 10.3382/ps.0641285.
Three growth trials were performed to determine the effect of carbonated water on growth performance of cockerels subjected to heat stress temperatures. In Trial 1, a 2 X 2 X 2 factorial design was used to test growth performance of Columbian crossbred cockerels between 8 and 11 weeks of age. The birds were subjected to either cyclic (day-night) heat stress (H) temperature (29 to 34 C) or cyclic (day-night) moderate (M) temperature (25 to 29 C), fed either a corn soy grower (G) diet or a 20% alfalfa diet (A), and provided with tap (TW) or carbonated (CW) drinking water. In Trial 2, a 2 X 4 X 2 factorial was used to access the effect of CW on growth performance of Hubbard cockerels between 4 and 7 weeks of age. Birds were grown in the M or H cyclic thermal environments with dietary treatments consisting of A, G, A plus 1% sodium bicarbonate (AB) and G plus 1% sodium bicarbonate (GB). In Trial 3, a 2 X 2 factorial was used to test the effect of CW on growth performance of Hubbard cockerels fed the G diet and subjected to either constant heat stress (33 C) or thermoneutral (25 C) temperatures. A 24-hr photoperiod was used in each experiment. In all three trials, heat stress reduced (P less than .05) average daily gain (ADG), feed intake, and feed efficiency (G/F).(ABSTRACT TRUNCATED AT 250 WORDS)
进行了三项生长试验，以确定碳酸水对处于热应激温度下的公鸡生长性能的影响。在试验1中，采用2×2×2析因设计来测试8至11周龄的哥伦比亚杂交公鸡的生长性能。这些鸡只分别处于循环（昼夜）热应激（H）温度（29至34摄氏度）或循环（昼夜）适中（M）温度（25至29摄氏度）下，饲喂玉米大豆育成鸡（G）日粮或20%苜蓿日粮（A），并提供自来水（TW）或碳酸水（CW）。在试验2中，采用2×4×2析因设计来研究碳酸水对4至7周龄哈伯德公鸡生长性能的影响。鸡只在M或H循环热环境中饲养，日粮处理包括A、G、添加1%碳酸氢钠的A（AB）和添加1%碳酸氢钠的G（GB）。在试验3中，采用2×2析因设计来测试碳酸水对饲喂G日粮且处于恒定热应激（33摄氏度）或热中性（25摄氏度）温度下的哈伯德公鸡生长性能的影响。每项实验均采用24小时光照周期。在所有三项试验中，热应激均降低了（P<0.05）平均日增重（ADG）、采食量和饲料效率（G/F）。（摘要截短至250字）
