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首页> 外文期刊>Journal of Animal Science >Effects of feeder design and changing source of water to a location separate from the wet-dry feeder at 4 or 8 weeks before harvest on growth, feeding behavior, and carcass characteristics of finishing pigs.
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Effects of feeder design and changing source of water to a location separate from the wet-dry feeder at 4 or 8 weeks before harvest on growth, feeding behavior, and carcass characteristics of finishing pigs.

机译：饲喂器设计以及在收获前4或8周将水源更改为与干干饲喂器分开的位置对育肥猪的生长，饲喂行为和car体特性的影响。

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摘要

Our objectives were to compare a conventional dry (5-space, 152.4-cm-wide) and a wet-dry (double-sided, each side = 38.1-cm-wide single space) feeder and to determine if changing the source of water to a location separate from a wet-dry feeder would result in improved G:F and carcass characteristics. Water supply to the wet-dry feeder was shut off and the cup waterer was turned on in 8 pens at 8 (d 69) or 4 (d 97) wk prior to harvest. For the remaining 8 wet-dry feeder pens, the feeder provided the sole water source for the entire experiment. A total of 1296 pigs (PIC, 337 x 1050; initially 19.4 kg BW) were used, with 27 pigs/pen (14 barrows and 13 gilts) and 24 pens/feeder design. From d 0 to 69, pigs fed with the wet-dry feeder had increased (P < 0.05) ADG, ADFI, G:F, and d 69 BW compared with those using the conventional dry feeder. Overall (d 0 to 124), pigs using fed with the water source in the wet-dry feeder the entire time had greater (P < 0.05) ADG, ADFI, final BW, and HCW the other treatments. The overall G:F was not different (P > 0.05) among pigs fed with the different feeder treatments. Pigs fed with the wet-dry feeder where water source was changed at 4 wk before harvest had greater (P < 0.05) ADG than pigs that used a conventional dry feeder. Pigs where the water source was changed at 4 wk had greater (P < 0.05) ADFI than those were the water source was changed 8 wk prior to harvest, and for pigs fed with the conventional dry feeder ADFI was intermediate. Back fat depth of pigs where the water source was changed at 8 wk before harvest was reduced (P < 0.05) compared with all other treatments and LM depth was greater (P < 0.05) than that of pigs using a conventional dry feeder and where the water source was changed at 4 week before harvest. Pigs fed using the wet-dry feeder visited the feeder less frequently (P < 0.05) and spent less total time at the feeder (P < 0.05) than those fed with the conventional dry feeder. The differences in feeding patterns remained even after the access to water was removed from the wet-dry feeder, with no change in the amount of aggressive behavior observed at the feeder. Pigs fed with a wet-dry feeder had an increased growth rate compared with those fed with a conventional dry feeder. Although measures of carcass leanness were improved by changing the location of the water, removing the water from the feeder also eliminated any net improvement in BW from using a wet-dry feeder
机译：我们的目标是比较传统的干式（5空间，宽152.4厘米）和干式（双面，每侧= 38.1厘米宽，单空间）进料器，并确定是否改变水源与干干进料器分开的位置将改善G：F和would体特性。在收获前，以8支笔在第8周（d 69）或第4周（d 97）的状态下关闭干湿给水器的供水，并用8支钢笔打开杯式饮水器。对于其余8支干干喂食器，喂食器为整个实验提供了唯一的水源。总共使用了1296头猪（PIC，337 x 1050;最初为19.4千克体重），每头有27头猪（14头公猪和13头小母猪）和24头/饲喂器设计。从第0天到第69天，与使用干式干喂器的猪相比，用干干喂食器喂养的猪的ADG，ADFI，G：F和d 69 BW升高（P <0.05）。总体而言（d 0到124），在整个过程中使用干干式喂料器中的水源喂食的猪，其ADG，ADFI，最终BW和HCW的其他处理均较高（P <0.05）。在用不同的喂食器处理的猪中，总的G：F没有差异（P> 0.05）。用干干喂食器喂水的猪在收获前4 wk换水，其ADG比使用常规干喂食器的猪高（P <0.05）。水源在4 wk时改变的猪的ADFI大于（P <0.05）在收获前8 wk时改变水源的猪，对于使用常规干式饲喂器喂养的猪，ADFI为中等。与所有其他处理方法相比，在收获前的第8周更换水源的猪的背脂深度降低（P <0.05），而LM深度比使用常规干式饲喂器的猪的背脂肪深度更大（P <0.05）。收获前4周更换水源。与使用干式饲喂器的猪相比，使用干式饲喂器的猪访问饲喂器的频率更低（P <0.05），并且在饲喂器上花费的总时间更少（P <0.05）。即使从干湿喂食器取水后，喂食方式的差异仍然存在，在喂食器上观察到的侵略行为没有变化。与使用干式饲喂器饲喂的猪相比，使用干式饲喂器饲喂的猪具有更高的生长速度。尽管通过改变水的位置可以改善measures体的瘦度，但从进料器中取水也消除了干湿进料器对体重的净改善

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