Reiners K, Hessel E F, Van den Weghe H F A
Research Centre for Animal Production and Technology, Georg-August University of Goettingen, D-49377 Vechta, Germany.
J Anim Sci. 2008 Dec;86(12):3600-7. doi: 10.2527/jas.2008-0909. Epub 2008 Jul 18.
The influence of heated mash on growth and feeding behavior of newly weaned piglets was investigated. An automatically ventilated nursery with 4 identical pens was used. Twenty piglets weaned at 21 d were housed in each pen. The experiment was repeated 3 times. In total, data were obtained from 240 piglets of 12 pens. The pens were provided with a sensor-controlled, automatic feeding device, which dosed a ready-mixed mash in a trough. In each of 2 of the pens, the feed was mixed with warm water at 36 degrees C, during the first week of weaning. This heated mash had a temperature of 34 degrees C at the outlet of the automatic feeding device (experimental group). In the 2 control groups, the water was not heated and the temperature of the mash was 14 degrees C at the outlet of the automatic feeding device. From the second week of weaning, the mash had a temperature of 14 degrees C at the outlet of the automatic feeding device in all 4 pens. Piglets were weighed at weaning, at weekly intervals through 49 d after weaning, and on d 139 after weaning. Behavior of the whole group, as well as behavior of selected focal animals, was evaluated for the first 48 h after weaning. In addition, skin condition of piglets was assessed on day of weaning and on d 7, 14, and 21 after weaning. The amount of feed consumed by the piglets was recorded on a daily basis throughout the whole period of nursery. Over the total period of the study, piglets in the experimental group gained 3.98 +/- 1.66 kg (P = 0.047) more than the control group. The difference was particularly clear during the nursery period (49 d) when the experimental group gained 0.89 +/- 0.23 kg more than the control group (P = 0.03). Although piglets in the control group consumed 37.15 +/- 0.15 kg of feed over the complete nursery period, the experimental group consumed 42.56 +/- 0.15 kg per piglet (P = 0.023). By heating the mash feed in the first week after weaning, both growth performance as well as feed consumption of piglets could be increased. No difference in feed conversion and feeding behavior was found between groups.
研究了温热饲料对刚断奶仔猪生长和采食行为的影响。使用了一个自动通风的保育舍，有4个相同的猪栏。每个猪栏饲养20头21日龄断奶的仔猪。该实验重复3次。总共从12个猪栏的240头仔猪获得数据。猪栏配备了传感器控制的自动饲喂装置，该装置在料槽中投喂预混饲料。在断奶后的第一周，其中2个猪栏的饲料与36℃的温水混合。这种温热饲料在自动饲喂装置出口处的温度为34℃（实验组）。在2个对照组中，水不加热，饲料在自动饲喂装置出口处的温度为14℃。从断奶后第二周起，所有4个猪栏的饲料在自动饲喂装置出口处的温度均为14℃。在断奶时、断奶后49天内每周以及断奶后139天对仔猪进行称重。在断奶后的前48小时评估整个群体以及选定的焦点动物的行为。此外，在断奶当天以及断奶后第7、14和21天评估仔猪的皮肤状况。在整个保育期内每天记录仔猪的采食量。在整个研究期间，实验组仔猪比对照组多增重3.98±1.66千克（P = 0.047）。这种差异在保育期（49天）尤为明显，此时实验组比对照组多增重0.89±0.23千克（P = 0.03）。尽管对照组仔猪在整个保育期消耗了37.15±0.15千克饲料，但实验组每头仔猪消耗了42.56±0.15千克（P = 0.023）。通过在断奶后的第一周加热饲料，仔猪的生长性能和采食量均可提高。两组之间在饲料转化率和采食行为方面未发现差异。
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