魏恆巍2006-07-262018-06-292006-07-262018-06-292002http://ntur.lib.ntu.edu.tw//handle/246246/16451本試驗檢測飼糧中離胺酸缺乏對保育豬 肌肉蛋白質蓄積速率之影響。以離胺酸含量達 需要量61.4％之飼糧，強迫餵飼裝設胃管之保 育豬18 天。結果顯示，其血漿中之游離離胺 酸濃度低於對照組者，但異白胺酸與甲硫胺酸 皆較對照組者為高，三者皆達顯著。缺乏組之 豬隻體重與生長速率，皆顯著低於對照組者： 而離胺酸之缺乏致使嚼肌、背最長肌、內縮肌 與二頭股肌之蛋白質蓄積量，僅達對照組者之 62％、64％、63％與58％。各肌肉於試驗全 期之蛋白質蓄積速率，對照組者皆顯著高於缺 乏組者，但嚼肌與背最長肌之胺基酸組成，兩 組間卻無顯著差異存在，此意味著肌肉蛋白質 之蓄積趨緩乃是其各主要蛋白質之蓄積以等 比例趨緩之結果，而非某一種肌肉蛋白質對飼 糧離胺酸之缺乏特別敏感所致。The aim of this study is to investigate effects of dietary lysine deficiency on protein accretion rates of porcine muscles. Pigs at 12 kg received a diet containing 61.4% of lysine requirement were in force-feeding by gastric tubes for 18 days. Results showed that the deficient pigs were with much lower lysine (p<0.01) but significantly higher methionine and isoleucine concentrations in plasma in comparison with a control group and lysine deficiency caused significantly lighter body weights and slower growth rates. Protein masses deposited for muscles masseter, longissimus dorsi, adductor or biceps femoris in the deficient group were only 62%, 64%, 63% or 58%, respectively, compared to that of the pigs fed adequately. Protein accretion rates of the afore-mentioned muscles in the control group were higher, significantly different from the deficient pigs; nevertheless, there was no significant difference in amino acid composition of muscles masseter or longissimus dorsi between two groups, and it implied that the decreases in muscle protein deposition were due to reductions in accretion between individual muscle proteins, proportionately, but not because of some muscle proteins specifically sensitive to deficiency of lysine.application/pdf83627 bytesapplication/pdfzh-TW國立臺灣大學動物科學技術學系暨研究所保育豬強迫餵飼離胺酸缺乏蛋白質蓄積速率Weanling pigsForce-feedingLysine deficiencyProtein accretion ratesreporthttp://ntur.lib.ntu.edu.tw/bitstream/246246/16451/1/902313B002370.pdf