Publication Date

1989

Description

Cattle grazing hybrid sorghum x sudangrass pastures during the summer usually gain only 60-7 5 % of their projected gain. The specific cause for this lack of gain is not known. Hybrid sorghum x sudangrass forages are considered adequate in nitrogen for stocker cattle. However, a portion of that nitrogen may be in the form of non-protein nitrogen ; thus, these forages may actually be protein deficient for stocker cattle. Fishmeal appears to be an effective source of escape or by-pass supplementary protein for the ruminant. Cottonseed meal is a typical oil seed meal and is readily available for incorporation into cattle feeding systems and may have escape protein poten­tial. Corn, primarily an energy source, is available to incorpor­ate into supplements and has a relatively high percentage of its protein in by-pass or escape form. The objective of this study was to compare responses in live weight gain of growing steers to supplements containing either mineral, fishmeal, cottonseed meal, or ground corn when cattle grazed hybrid sorghum x sudangrass pastures.

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Fishmeal, Cottonseed Meal, and Corn Supplements with Rumensin for Stockers Grazing Hybrid Sorghum x Sudangrass Pastures

Cattle grazing hybrid sorghum x sudangrass pastures during the summer usually gain only 60-7 5 % of their projected gain. The specific cause for this lack of gain is not known. Hybrid sorghum x sudangrass forages are considered adequate in nitrogen for stocker cattle. However, a portion of that nitrogen may be in the form of non-protein nitrogen ; thus, these forages may actually be protein deficient for stocker cattle. Fishmeal appears to be an effective source of escape or by-pass supplementary protein for the ruminant. Cottonseed meal is a typical oil seed meal and is readily available for incorporation into cattle feeding systems and may have escape protein poten­tial. Corn, primarily an energy source, is available to incorpor­ate into supplements and has a relatively high percentage of its protein in by-pass or escape form. The objective of this study was to compare responses in live weight gain of growing steers to supplements containing either mineral, fishmeal, cottonseed meal, or ground corn when cattle grazed hybrid sorghum x sudangrass pastures.