Morales A, Ibarra N, Chávez M, Gómez T, Suárez A, Valle J A, Camacho R L, Cervantes M
Instituto de Ciencias Agrícolas, Universidad Autónoma de Baja California, Mexicali, México.
J Anim Physiol Anim Nutr (Berl). 2018 Apr;102(2):e718-e725. doi: 10.1111/jpn.12824. Epub 2017 Oct 8.
Feed intake and diet composition appear to affect the body temperature of pigs. Two trials were conducted to analyse the effect of feed intake level and dietary protein content on the intestinal temperature (IT) of pigs housed under thermo neutral conditions. Ten pigs (64.1 ± 1.3 kg initial body weight) fitted with an ileal cannula were used. A thermometer set to register the IT at 5-min intervals was implanted into the ileum through the cannula. In both trials, the ambient temperature ranged from 19.1 to 21.6°C and the pigs were fed at 07:00 and 19:00 hr (same amount each time). In trial 1, the pigs were fed daily 1.2 or 1.8 kg of a wheat-soybean meal diet. The IT followed a similar pattern along a 24-hr period regardless the feed intake level. The IT rapidly increased up to 0.61 and 0.74°C after the morning meal and up to 0.53 and 0.47°C after the evening meal in pigs fed 1.2 and 1.8 kg/d respectively. The postprandial IT was higher in pigs fed 1.8 kg after each meal (p < .05). In trial 2, pigs were fed daily 1.8 kg of a low (11%) or a high (22%) crude protein diet. The IT followed a similar pattern along the 24-hr period regardless the dietary protein level. The postprandial IT did not differ between pigs fed the low protein or the high protein (p > .10). The IT rapidly increased up to 0.66 and 0.62°C after the morning meal in pigs fed the high- and low-protein diet (p < .05), but there was no change after the evening meal (p > .10). In conclusion, the feed intake level affected the IT of pigs housed under TN conditions, but the dietary protein content had no effect.
采食量和日粮组成似乎会影响猪的体温。进行了两项试验，以分析采食量水平和日粮蛋白质含量对处于热中性条件下猪的肠道温度（IT）的影响。使用了10头安装有回肠套管的猪（初始体重64.1±1.3千克）。通过套管将设定为每隔5分钟记录一次IT的温度计植入回肠。在两项试验中，环境温度范围为19.1至21.6°C，猪在07:00和19:00时喂食（每次喂食量相同）。在试验1中，每天给猪喂食1.2或1.8千克的小麦-豆粕日粮。无论采食量水平如何，IT在24小时内都呈现相似的模式。分别饲喂1.2和1.8千克/天的猪，早餐后IT迅速升高至0.61和0.74°C，晚餐后分别升高至0.53和0.47°C。每餐喂食1.8千克的猪餐后IT更高（p<0.05）。在试验2中，每天给猪喂食1.8千克低（11%）或高（22%）粗蛋白日粮。无论日粮蛋白质水平如何，IT在24小时内都呈现相似的模式。饲喂低蛋白或高蛋白日粮的猪餐后IT没有差异（p>0.10）。饲喂高蛋白和低蛋白日粮的猪早餐后IT迅速升高至0.66和0.62°C（p<0.05），但晚餐后没有变化（p>0.10）。总之，采食量水平影响了处于热中性条件下猪的IT，但日粮蛋白质含量没有影响。
