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KMID : 1025520000420060827
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Journal of Animal Science and Technology
2000 Volume.42 No. 6 p.827 ~ p.834
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Feeder Design , Pelleting and Season Affect Growth Performance and Water Use in Finishing Pigs
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Hancock, J. D.
Goodband, R. D.
Rantanen, M. M.
Nelssen, J. L.
Tokach, M. D.
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Abstract
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In the first experiment, 300 pigs(initial body weight 50.6㎏) were used in two 70-d growth trials(summer and winter) to determine the effects of feeder designs, pelleting and season on growth performance in finishing pigs. Three different feeder designs were evaluated; 1) a dry type, two-hole feeder(Aco™; FD1), 2) a single-hole, wet/dry shelf feeder with a nipple waterer located at the base of the trough(Crystal Spring™; FD2), and 3) an eight-hole, round, dry feeder with a wheel agitator(Osborne™; FD3). ADG during the summer trial was not affected by the feeder design. However, pigs fed from the FD2 had a slight numerical advantage in ADG. No difference was observed for ADFI during the summer trial. Pigs fed from the FD2 had approximately 5.9% better feed efficiency(P$lt;0.05) than pigs consuming feed from either of the FDI or FD3. Similar to the results from the summer trial, no differences were observed in ADG or ADFI among pigs fed from the different feeders during the winter trial. In the second experiment, 288 finishing pigs(initial body weigh of 47.4 ㎏) were used in a 35-d growth assay. Treatments were 1) dry feeder with meal diet, 2) dry feeder with pelleted diet, 3) wet/dry feeder with meal diet and 4) wet/dry feeder with pelleted diet. Feeder designs were a simple two-hole, dry feeder(Pride of the Farm™) and a single-hole, wet/dry shelf feeder with a nipple waterer located at the base of the trough(Crystal Spring™). Pigs fed from the wet/dry feeders had 4% greater ADG(P$lt;0.04) than those fed from the dry feeders. Feeder design had no effect on ADFI or gain/feed(P$gt;0.24). Pigs fed the pelleted diet consumed less feed and had better gain/feed(P$lt;0.02 and P$lt;0.01, respectively) than pigs fed the diet in meal form. However, an interaction was noted among feeder type and diet form. In dry feeders, pelleting improved efficiency of gain by 8%, but with the wet/dry feeder, pelleting improved efficiency of gain by only 1% (feeder type × diet form interaction, P$lt;0.04). Pigs consuming feed from the wet/dry feeders had 50% less water disappearance(P$lt;0.001) than pigs fed from the dry feeder. In conclusion, the single hole, wet/dry resulted in improved feed efficiency and reduced water wastage compared with the dry feeders evaluated.
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