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Effects of blood-mixed and heat treatment of protein feeds on nitrogen digestion in the rumen and hindgut of sheep |
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C. S. Yoon, N. H. Lee, K. K. Jung |
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| Abstract |
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This experiment was conducted to study the effects of blood-mixed and heat-treated protein feeds on protein degradation in the rumen, flow of protein to the abomasums and availability of undegraded protein in the intestine of sheep in a 4횞4 Latin square design. Soybean oil meal, rapeseed meal, and whole soybean were mixed with fresh swine blood and dried at 140째C for 2 h. Proportionate disappearance of apparently digested OM in the postrumen for the blood and heat treated protein group was ranged from 43.2 to 50.5% as compared with 28.0% for the unheated soybean oil meal diet. The treated protein supplements were resulted in greater total N and NAN flow passing at the abomasums than untreated soybean oil meal diet was fed. The quantities of undegraded feed N passing at the abomasums for the treated protein diets was approximately twice as high as that of the untreated soybean oil meal diet and the estimated amount of undegraded N of the protein supplement itself was 79.1 to 84.2% as compared with 15% of soybean oil meal. |
| Keywords:
Blood and Heat Treatment; Protein Degradation; Microbial N Synthesis; Sheep |
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