혈액을 코팅한 대두박의 사료적 가치 = Feeding Value of Protected Soybean Oil Meal with Blood

다국어 초록 (Multilingual Abstract)

The purposes of the present research were designed to study the effect of blood-mixed and heat-treated protein feeds on protein degradation in the rumen, flow of protein at the abomasum and availability of protein in tare intestine of sheep in a 4×4 Latin Square design with four change-over feeding. Soybean oil meal, rapeseed oil meal, and whole soybean were mixed with 125% of swine blood and they were dried at 140℃ for 2 hours because the bland level and heating temperature showed the best results in situ experiments. Treatment containing each protein sources received 43-44% of their dietary N from this sources. The digesta flow markers were Cr₂O₃, ^4C-CrEDTA, and DAPA as a bacterial marker. The results obtained are summarized as follows: 1. The dilution rate of rumen digesta was not influenced by the diets and the concentration of total V FA increased significantly(p $lt; .05) for the soybean oil meal diet. The molar proportion of volatile isoacids were lower with blood-treated protein diets, and ruminal ammonia nitrogen content was 12-16mg/100ml, regardless of diets. 2. The quantities of digested OM in the rumen was significantly decreased for blood-treaced protein diets, giving an 43.2%-50% of post-ruminal OM digestion as compared with 28.0% of soybean oil meal diet. 3. Supplementation with treated protein feed resulted in greater total N and NAN flow passing at the abomasum than inclusion of soybean oil meal. The quantities of undegraded feed nitrogen at the abomasum for the blood-treated protein diets was approximately twice as high as that of the soybean oil meal diet, and percentage N escaped of treated protein sources was about 80% as compared with 15% of soybean oil meal. 4. The flow of fatal amino acid nitrogen, individual amino acid and by-passed dietary amino acid at the abomesum were significantly increased when blood-treated protein diets was fed. Apparent rumen degradability of dietary total amino acid was 60.6%, 44.6%, 33.5%, and 38.3% for untreated soybean oil meal, blood-treated soybean oil meal and rapessed oil meal and soybean respectively. 5. Digestibilitises of the individual amino acid between treated protein diets in the intestine were similar, but feeding this protein diets tended to produce more digestion of individual amino acid than that of soybean oil meal diet.