Effect of Pelleting High Fiber Feeds on Turkey Performance


Mehdi Hassibi

Document Type

Thesis - Open Access

Award Date


Degree Name

Doctor of Philosophy (PhD)


Animal Science

First Advisor

C. W. Carlson


Four experiments were conducted using a total of 3570 male and 380 female day-old Nicholas poults to study the effect of pelleting high fiber feeds on body weight and feed efficiency. In the first experiment the effect of feeding mash, poor and firm pellet and feed additives (Neo-Terramycin, Neo-Terramycin plus copper) on performance were studied. The experimental diets were supplemented with 20% wheat bran (WB) using low protein diets. In the second experiment the effects of mash, poor and firm pellet in a corn-soybean meal (SBM) diet with 20% WB arid the effect of levels of lysine in corn-sunflower meal (SFM) diets (with no WB) as well as the effect of feed additives on performance were investigated using high protein diets. In the third experiment the effect of pelleting high protein corn-SFM (with no WB) diet was studied using both males and females. In the last experiment the effect of feeding mash, poor and firm pellets as well as feeding corn, oats and corn cobs on performance was studied using high protein diets. Individual weight and group feed consumption data were obtained at 4 week intervals. The data were analyzed using analyses of variance and significant treatment means were separated using the Duncan test. The results from the first experiment showed that in general birds fed mash diet gained significantly less weight than birds fed the other diets. Feed/gain ratio was superior among birds fed the control diet (no WB) as compared to other diets. In the second experiment the overall result showed no significant differences in BW when firm, or poor pellet and mash diets were compared. Birds fed SFM with 100% of the recommended lysine level gained significantly more weight than birds fed diets with 70% lysine. Turkeys fed firm pellets showed superior feed/gain ratios as compared to turkeys fed other diets. In the third experiment feeding pellets produced significantly heavier birds for both sexes with no significant differences in feed conversion as a result of pelleting. The results of last experiment showed that corn-SBM-oats diet in pelleted form produced significantly heavier birds compared to other diets in mash form with no difference when compared to the corn-SBM corn cob diet in pelleted form. Birds fed diets containing oats in pelleted form had superior feed/gain ratio while birds fed a corn-SBM-corn cob diet had poorest feed efficiency value.

Library of Congress Subject Headings

Turkeys -- Feeding and feeds

Fiber in animal nutrition

Pelleted feed



Number of Pages



South Dakota State University

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