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합성아미노산 첨가수준에 따른 부로일러 사료의 단백질 절약효과
강한석,곽종형 ( Han Suk Kang,Chong Hyung Kwack ) 한국축산학회 1983 한국축산학회지 Vol.25 No.2
In order to investigate the protein sparing effect of synthetic amino acids (dl-methionine, l-lysine) on the broiler ration, this experiment was conducted with a total of 240 Piterson starting chickens for a period of 4 weeks. 8 treatments of (1) control, CP 21%,(2) basal, CP 19%, (3) basal +lysine 0.15%, (4) basal + lysine 0.3%, (5) basal + methionine 0.1% (6) basal + methionine 0.2%, (7) basal + lysine 0.15% + methionine 0.1%, (8) basal + lysine 0.3% + methionine 0.2% were employed with 3 replicates in this experiment. Metabolism trial was carried out at the end of feeding trial. The results obtained were summarized as follows; 1. Body gain was higher in the basal + lysine 0.15% + methionine 0.1% treatment than in the other treatments. There was significant difference (P$lt;0.01) between the basal+lysine 0.15% + methionine 0.1% treatment and other treatments. 2. Feed intake was higher in the control treatment .than in the other treatments. However, no significant difference was found out between the control treatment and the lysine 0.15% + methionine 0.1% treatment. However, there was significant difference (P$lt;0.05) between the control treatment and the lysine 0.3% + methionine 0.2% treatment. Also, significant difference (P$lt;0.01) was found out between the control treatment and other treatments. 3. Basal + lysine 0.15% + methionine 0.1% treatment was best in the feed efficiency but basal treatment basal + lysine 0.15% treatments were lower than other treatments. 4. In the nutrient: utilization, utilization of dry matter, crude protein and crude fat was highest in the control, lysine 0.15% + methionine 0.1% and the control treatment respectively. Then, significant difference (P$lt;0.05) was found between the control treatment and the basal treatment in the crude fat utilization. Utilization of carbohydrate was higher in the lysine 0.15% + methionine 0.1% treatment than in the other treatments. Significant difference (P$lt;0.05) was found between the lysine 0.15% + methionine 0.1% treatment and the methionine 0.2%, basal treatment, and there was significant difference (P$lt;0.01) between the lysine 0.15% + methionine 0.1% treatment and other treatments in the utilization of carbohydrate. 5. In the economical analysis, feed cost required per kg body gain was lowest in the lysine 0.15%+ methionine 0.1% treatment and next in the control treatment. Therefore, based on the results of this experiment, it may be concluded that the supplementation of lysine 0.15% + methionine 0.1% with the broiler ration of crude protein 19% would spare 2% protein feed.
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