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어분 (魚粉) 과 Formaldehyde 처리 대두박의 단백질 및 아미노산의 이용율과 육성비육우 (育成肥育牛) 의 증체 효과
조홍래(H . R . Cho),맹원재(W . J . Maeng),남귀현(K . H . Nam),송병춘(B . C . Song) 한국축산학회 1990 한국축산학회지 Vol.32 No.3
This experiment was conducted to measure the effects of fish meal and formaldehyde treated soybean meal (HCHO-soybean meal) on the protein and amino acid utilization and on the growth responses of growing Holstein bulls. The results obtained were as follows ; l. Dry matter digestibilities in dacron bag inserted into fistulated steer were the lowest in fish meal, followed by HCHO-soybean meal and soybean meal and nitrogen digestibility was the highest in soybean meal followed by fish meal and HCHO-soybean meal. Dry matter disappearance rates of fish meal, HCHO-soybean meal and soybean meal in the rumen were 11.53, 13.26 and 14.72%/h, and nitrogen disappearance rates were 11.54, 12.36 and 15.17%/h, respectively. 2. Nitrogen digestibilities of fish meal, HCHO-soybean meal and soybean meal were 37.1, 21.4 and 79.2% in the rumen and 52.0, 76.7 and 20.4% in the small intestine, respectively. Total amino acid disappearance of fish meal, HCHO-soybean meal and soybean meal were 36, 41, 60% in the rumen and 51, 55 and 37% in the small intestine, respectively. 3. Improvements of daily growth of growing Holstein bulls fed diets containing fish meal, HCHO-soybean meal and soybean meal were 16.2, 18.4 and 11.3%, respectively over diet containing urea (0.735kg gain/day) and improvements of feed conversion were 15.2, 16.2 and 15.2% as compared with urea diet. Daily weight gains of growing Holstein bulls were higher by 4.3 and 6.2% in diets containing fish meal and HCHO-soybean meal as compared with soybean meal diet, but there were no difference between HCHO-soybean meal and fish meal diets.
Methionine 및 Lysine 의 첨가로 인한 부로일러 사료의 단백질 절약 효과
한인규,오상집,조홍래,윤재인 ( In K . Han,S . J . Ohh,H . R . Cho,J . I . Yoon ) 한국축산학회 1978 한국축산학회지 Vol.20 No.6
To investigate the protein sparing effect of ㎗-methionine and l-lysine, a series of feeding and metabolism trial with a total of 480 broiler chickens of Hubbard strains was conducted for a period of 8 weeks. Eight treatments of (1) control, (2) basal (protein content of basal diet was 2% less than control diet), (3) basal + methionine 0.1%, (4) basal+methionine 0.2%, (S) basal + lysine 0.1 %, (6) basal + lysine 0.2%, (7) basal + methionine 0.1% + lysine 0.1% and (8) basal + methionine 0.2% + lysine 0.2% with 4 replicates were employed in this experiment and the obtained result: are summarized as follows 1. Methionine and lysine contents, of experimental diets were generally lower than NRC (1971) requirement but only methionine content of 0.2% lysine supplemented group was slightly higher than NRC (1971) requirement. Lysine content of control group and 0.2% lysine supplemented group was comparable to NRC (1971) standard. 2. It was found that the growth rate of lysine or methionine supplemented group was generally improved. This trend was. more remarkable when lysine and methionine was given at the level of 0.2%. Although feed conversion rate in the metionine and lysine added groups seemed to be improved, significant difference was not found among the treatments. It was proved that growth rate and feed conversion rate were improved as the level of supplementation of methionine and lysine in the rations increased. 3. No statistical difference was found in the nutrient utilizabilities among the treatments. However, the utilizability of dry matter, protein, fat and carbohydrate of chicks received these amino acids was slightly higher than basal group. 4. Data revealed that the production cost per ㎏ of body weight gain was slightly less for the lysine supplemented groups regardless of supplemented level than all other groups. However, it was noted that methionine 0.2% group and lysine 0.2% + methionine 0.2% group required more feed cost per unit gain than control group. Considering growth rate and meat production cost simultaneously, supplementation of these amino acids at the level of 0.1% was most profitable among the other treatments. Based on the above mentioned results it may be concluded that the inclusion of ㎗-methionine and l-lysine which are generally known as two limiting amino acids in the broiler rations Mould be able to spare about 2% of dietary protein (4% soybean meal or 3% fish meal).