Morrison W D, Amyot E, McMillan I, Otten L, Pei D C
Department of Animal and Poultry Science, University of Guelph, Ontario, Canada.
Poult Sci. 1987 Nov;66(11):1762-5. doi: 10.3382/ps.0661762.
In eight trials, 240 male broiler birds, initially 7 days old, were randomly allocated to three treatments. Treatments were: continuous infrared (CI), intermittent infrared (II; 4 min on, 2 min off, 10 cycles/h), and intermittent microwaves (IM; 2 min on, 4 min off, 10 cycles/h). At the conclusion of the 14-day experimental period the 21-day-old birds were killed. Although there were significant differences (P less than or equal to .05) in mean gain over the 2-wk treatment period between trials, no differences (P greater than .05) were attributed to treatments. There were, however, significant differences in feed:gain ratios between trials and between treatments. Feed:gain ratios of birds kept under CI and II treatments did not differ significantly (P greater than .05). However, feed:gain ratios, 1.61 +/- .04 and 1.57 +/- .04 for CI and II, respectively, differed significantly (P less than or equal to .05) from that of the IM treatment (1.76 +/- .04). The protein content of chicks under II was significantly (P less than or equal to .05) lower than that of birds under IM. There were no differences (P greater than .05) in fat, ash, calcium, and phosphorus content of chicks among treatments.
在八项试验中，240只初始7日龄的雄性肉鸡被随机分配到三种处理组。处理方式如下：持续红外线（CI）、间歇红外线（II；开4分钟，关2分钟，每小时10个循环）和间歇微波（IM；开2分钟，关4分钟，每小时10个循环）。在为期14天的试验期结束时，将21日龄的鸡宰杀。尽管在各试验中，2周处理期内的平均增重存在显著差异（P≤0.05），但未发现处理组间存在差异（P＞0.05）。然而，试验间和处理组间的料重比存在显著差异。CI和II处理组鸡的料重比无显著差异（P＞0.05）。然而，CI和II处理组的料重比分别为1.61±0.04和1.57±0.04，与IM处理组（1.76±0.04）存在显著差异（P≤0.05）。II处理组雏鸡的蛋白质含量显著低于IM处理组（P≤0.05）。各处理组雏鸡的脂肪、灰分、钙和磷含量无差异（P＞0.05）。
