Feeding value of frost-damaged soybeans for lambs
| Autor: | J.A. Loesche, R. H. Pritchard, Z. W. Wicks, J. M. Reecy |
|---|---|
| Rok vydání: | 1992 |
| Předmět: |
Dietary Fiber
Male Rumen food.ingredient Silage Soybean meal Zea mays Soybean oil food Animal science Dietary Fats Unsaturated Ammonia Oil content Freezing Genetics Animals Humans Dry matter Sheep Chemistry Infant Newborn food and beverages General Medicine Fatty Acids Volatile Animal Feed Intestinal Absorption Fermentation Digestion Animal Science and Zoology Frost (temperature) Soybeans Nutritive Value Food Science |
| Zdroj: | Journal of Animal Science. 70:2221-2227 |
| ISSN: | 1525-3163 0021-8812 |
| Popis: | Three experiments were conducted to determine the relative feeding value of frost-damaged soybeans (FDS) for ruminants. Frost-damaged soybean ether-extract content was variable and differed (P less than .05) from mature soybeans. Isonitrogenous supplementation of corn silage diets with soybean meal (SBM), SBM+soybean oil (SBO), mature raw soybeans (MSB), and FDS was compared in sheep. Acid detergent fiber and apparent N digestion were lower (P less than .001) for supplements containing oil. Nitrogen retention was reduced (P less than .07) only for raw soybean supplements. Ruminal NH3 N and branched-chain VFA concentrations differed (P less than .01) between SBM and supplements containing oil. Maximum tolerable inclusion level of FDS in corn silage diets was tested in wethers using diets containing 0, 7, 14, or 21% FDS. Dry matter and ADF digestibility declined linearly (P less than .01) with increasing dietary FDS. Ether extract digestibility was unchanged due to treatment, but GE digestibility decreased quadratically (P less than .01). The most pronounced decline in GE digestibility occurred when FDS increased from 14 to 21% of the diet. The effects of FDS on corn silage utilization were similar to MSB effects. Oil content and antinutritional factors contributed to detrimental effects. Frost-damaged soybeans should not exceed 14% of corn silage diets fed to growing wethers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|