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首页> 外文期刊>Transactions of the ASABE >Static space requirements for piglet creep area as influenced by radiant temperature.
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Static space requirements for piglet creep area as influenced by radiant temperature.

机译：辐射温度影响仔猪蠕变区的静态空间要求。

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摘要

Eight litters of 10 pre-weaned piglets from 6 to 22 days of age were evaluated in Norway for resting space occupied in an experimental 1x2 m creep box. Piglets were evaluated at setpoint temperatures of 30 degrees C, 34 degrees C, and 38 degrees C at one week of age; 23 degrees C, 27 degrees C, and 31 degrees C at two weeks of age; and 21 degrees C, 25 degrees C, and 29 degrees C at three weeks old. Floor temperature, as provided by radiant heat lamps, was the primary environmental variable. Floor temperatures of 34 degrees C, 27 degrees C, and 25 degrees C were evaluated as the recommended condition for piglet comfort for weeks 1, 2, and 3, respectively. The other two temperatures each week were considered mildly challenging in being too cool or too warm. The objective of the study was to quantify the space occupied by a litter of piglets under recommended conditions and when challenged by less comfortable radiant temperatures in an oversized, uniformly heated creep area. Creep box floor temperature was quantified as typically within 1 degrees C of setpoint (variation within the space: standard deviation=0.7 degrees C to 2.8 degrees C) as measured with an infrared temperature sensor. The space occupied by a litter of 10 piglets at the recommended floor temperatures was ALR=0.29*M degrees 0.53, where ALR is the area occupied (m2) and M is the individual piglet mass (kg). Under 4 degrees C too warm or 4 degrees C too cool conditions, the litter of piglets occupied approximately 12% more or 9% less area, respectively. The area recommended for 10 average-sized piglets at comfortable temperatures at 1 week (3.7 kg), 2 weeks (6.1 kg), and 3 weeks (8.6 kg) of age is 0.58, 0.76, and 0.91 m2, respectively.
机译：在挪威评估了8窝10头6至22天大的断奶仔猪的休息空间，该空间是在1x2 m实验性蠕变箱中占据的。在一周内，在30摄氏度，34摄氏度和38摄氏度的设定温度下评估仔猪;两周大时为23摄氏度，27摄氏度和31摄氏度;在三周大时达到21摄氏度，25摄氏度和29摄氏度。辐射热灯提供的地板温度是主要的环境变量。分别将第34、27和25摄氏度的地板温度作为第1、2和3周仔猪舒适度的推荐条件。每周另外两个温度被认为在过冷或过温中具有中等挑战性。该研究的目的是量化在推荐条件下，以及在超大且受热均匀的蠕变区域受到辐射温度较低的挑战时，一窝仔猪所占的空间。蠕变箱地板温度通常用红外温度传感器测量，通常在设定点的1摄氏度（空间内的变化：标准偏差= 0.7摄氏度至2.8摄氏度）内量化。在建议的地板温度下，一窝10头仔猪所占的空间为ALR = 0.29 * M度0.53，其中ALR为所占面积（m2），M为个体仔猪质量（kg）。在4摄氏度太热或4摄氏度太冷的条件下，仔猪的产仔面积分别增加大约12％或减少9％。建议的10个平均大小的仔猪在1周（3.7千克），2周（6.1千克）和3周（8.6千克）的适宜温度下的面积分别为0.58、0.76和0.91平方米。

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