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Landblom, D.G. and W.W. Poland. North Dakota State University, Dickinson Research Extension Center, Dickinson, ND.  1997 Journal of Animal Science Vol. 75 (Suppl 1) pp 58. Replacement value of Paul naked oat in weanling pig starter diets.

Plant breeders at North Dakota State University (NDSU) have released a new naked oat variety, (Avena sativa L. var. Paul), which appears to have potential for replacing corn and a portion of the soybean meal in starter diets for weanling pigs. This substitution would be advantageous for producers in the extreme Northern Great Plains where corn and soybean meal are not commonly grown. PIC L326 x C15 weanling pigs (n=128, Init. BW=6.36 kg) were removed from their mothers and moved to a segregated early-weaning (SEW) facility and presented the following meal-type, 3-phase starter diets: corn-soybean meal control (0%-NO), 50% naked oat (50%-NO), 75% naked oat (75%-NO) and 100% naked oat (100%-NO). Barrows and gilts were balanced across dietary treatments, and pen served as the experimental unit (8 pigs/pen; 4 pens/treatment). Pig performance was monitored over a 29d starter period. Numerical differences for average daily gain (ADG), average daily feed intake (ADFI), and gain:feed (G:F) existed in phase-1 post-weaning (9d), and subsequently in phase-2 (13d), but none were significant (P>.05). In phase-3 (7d), pigs fed 50%-NO tended to consume more feed than the other treatments (P=.06), but ADG was only numerically slower. Except for the depression observed with 50%-NO in phase-3, the levels and grain bases evaluated supported a smooth transition from nursing to the nutrient-dense nursery diets. Over the entire 29d starter period, numerically slower ADG and nearly equal ADFI, for the 50%-NO treatment, translated into the lowest G:F ratio (P=.035) and the highest feed cost/pound of gain (P=.05). When 29d performance for the corn-soybean meal control, 75%-NO and 100%-NO was evaluated, only small numerical differences for ADG, ADFI, G:F and feed cost/pound of gain were observed. The data, with respect to replacing one-half of the corn with naked oat, is inconclusive. However, based on growth and economic performance, corn and a portion of the soybean meal in SEW pig starter diets can be completely replaced with Paul naked oat.


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