[Pathology].
نویسنده
چکیده
Treatments were arranged in a 3 × 3 × 3 factorial design consisting of 3 levels of added fiber (0, 2 and 4% oat hulls), added moisture (0, 2 and 4% tap water) and added protein (0, 2 and 4% soybean meal). Fiber, moisture and/or protein were added to a corn/soybean based basal diet that was formulated to Cobb specifications. Feed was manufactured at the West Virginia University pilot feed mill utilizing a randomized complete block design over a 4-week period. Steam conditioning temperature was held at 80 ± 2°C. Steam pressure was held constant at 262kPa. Fiber decreased modified pellet durability index (MPDI), bulk density and production rate (P = 0.0001, 0.0001, and 0.0524, respectively) and increased total fines (P = 0.0234). Detrimental pellet manufacture effects of fiber were likely associated with particle size. Moisture increased MPDI and decreased bulk density and production rate (P = 0.0030, 0.0001, and 0.0001, respectively). Protein increased MPDI (P = 0.0440). Ingredient interactions (fiber|moisture|protein) were not significant (P > 0.05). Results suggest that further research is warranted using increased levels of moisture and protein in practical diet formulations.
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ورودعنوان ژورنال:
- Revue medicale de la Suisse romande
دوره 119 10 شماره
صفحات -
تاریخ انتشار 1997