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Animal Industry Report

Extension Number

ASL R2820

Topic

Swine

Summary and Implications

Two studies were carried out on the same group of pigs within a commercial wean-finish system. For the nursery phase, a completely randomized design was used to compare 3 feeder space allowance treatments (2.1, 2.5, 2.9 cm/pig). Pigs (n = 3,720) were randomly allotted to same sex pens (10 feeders/ treatment) of 62 pigs/pen. Thirty 7-hole double sided feeders were utilized in the study. All pigs had equal floor space (0.85m²/pig). In the grow-finish phase, a total of 60 pens (n = 1,860 pigs; 31 pigs/pen) were utilized in a 2 х 3 factorial design with 3 feeder space allowances (4.1, 4.9, or 5.7 cm/pig) and 2 dietary DDGS treatments (D30 or D60). Fecal and diet samples were collected and analyzed to determine apparent total tract digestibility (ATTD %) and energy content. In the nursery portion of the trial, there was no effect of feeder space treatment on ADG, ADFI, or feed efficiency (P > 0.05) from weaning to d 56 post-weaning or during any weigh period. In the grow-finish portion of the trial, feeder space allowance and DDGS inclusion level did not affect ADG, ADFI, or feed efficiency (P > 0.05) from d 57 post-weaning to market. Pigs fed the D30 diet had greater HCW, percent yield, and loin depth than those on the D60 diet (P < 0.05). Pigs fed D30 DDGS treatment had greater (P < 0.05) ATTD for DM and GE for both collection periods compared to those on the D60 DDGS treatment. Energy content of the D30 diet was greater (P < 0.05) than the D60 diet during collection 1, but was lower (P < 0.05) for collection period 2. Neither feeder allowance nor DDGS inclusion level affected outcomes, but in the final phase indications of inadequate feeder space was observed.

Copyright Holder

Iowa State University

Language

en

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