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頁籤選單縮合
題名 | Effects of Dietary Copper and Sulfur Amino Acid Levels on Growth Performance and Metabolism of Nitrogen and Copper in Weanling Pigs=銅與含硫胺基酸量對仔豬生長性能、氮與銅代謝之影響 |
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作者姓名(中文) | 徐阿里; 林義福; 施柏齡; 劉芳爵; | 書刊名 | 台灣農學會報 |
卷期 | 9:1 2008.02[民97.02] |
頁次 | 頁89-99 |
分類號 | 437.654 |
關鍵詞 | 銅; 代謝; 生長性能; 含硫胺基酸; 仔豬; Copper; Metabolism; Performance; Sulfur amino acid; Weanling pig; |
語文 | 英文(English) |
中文摘要 | 本試驗目的在探討飼糧中銅及含硫胺基酸量對仔豬生長性能、氮與銅蓄積之影響。在生長試驗,雜交肉豬 144 頭(始重 10 公斤),依性別及體重逢機分飼處理飼糧,每處理4重覆,飼糧處理為 3×3 複因子,銅(15、150及300 ppm)及含硫胺基酸(SAA)(0.48、0.63及0.78%)為主因子。基礎飼糧為半純化飼糧含離胺酸0.96%、SAA 0.49%及銅15 ppm(分析值)。銅及SAA量之提高分別以硫酸銅(CuSO4.5H2O)及DL-Methionine添加之。飼養試驗為期四週,以測定仔豬生長性能。在代謝試驗,36頭閹公豬各飼於代謝架,其處理飼糧如飼養試驗,以測定氮、銅之蓄積,並抽血液以測定血紅素、紅血球數及血球容積比、血清游離SAA及尿素氮。由試驗結果顯示,飼糧之銅與SAA含量在所測定的項目均無交感效應,提高仔豬飼糧之SAA或含銅量並不顯著影響豬之生長及飼料利用效率、紅血球數、血紅素及血球容積比及血清尿素氮。血清游離甲硫胺酸及SAA則隨飼糧SAA之提高而呈直線性提高(P<0.05)。仔豬飼糧中SAA之提高並不顯著影響糞銅、尿銅與排泄銅量及銅蓄積率與氮蓄積率。提高豬飼糧含銅量並不影響氮及銅的蓄積率,但豬所排出糞銅量與尿銅量及總排泄銅量及銅蓄積量隨飼糧含銅量之提高而呈直線性提高(P<0.01),而豬所攝食之銅量平均83.7%由糞排出。本試驗結果顯示提高飼糧含銅量或SAA量均不顯著影響仔豬生長性能及氮及銅之蓄積率,但提高飼糧含銅量可提高豬排泄銅量,而提高飼糧SAA可提高豬血清游離SAA;飼糧銅與SAA含量在仔豬生長性能及氮與銅的代謝並無相互影響。 |
英文摘要 | Two experiments were conducted to study the effects of dietary copper (Cu) and total sulfur amino acid (SAA) on growth performance, nitrogen (N) balance and Cu retention of weanling pigs. In feeding experiment, 144 crossbred pigs (initially 10 kg BW) were assigned randomly to treatments with four replicates. A 3 × 3 factorial arrangement of treatments was used with main effects of Cu (15, 150 and 300 ppm) and SAA (0.48, 0.63 and 0.78%). The basal diet was semi-purified diet and contained 0.96% lysine, 0.49% SAA and 15 ppm Cu. Copper sulfate and DL-methionine were used to increase the levels of Cu and SAA in diets, respectively. The feeding period was four wks for measuring pig growth performance. In metabolism experment, 36 barrows were used for determining N and Cu retention and measuring hematology and serum urea N and free SAA. The results showed that there was no interaction (P > 0.05) between Cu and SAA in measurements. Dietary Cu and SAA did not significantly (P > 0.05) affect the pig performance, hemoglobin, red blood cells, hematocrit and serum urea N. The free SAA and methionine in serum were increased linearly (P < 0.05) as dietary SAA increasing. The amount (mg/day) of fecal, urinary and total Cu and Cu retention were increased linearly (P < 0.01) as the dietary Cu increased, but those did not affect by the levels of dietary SAA. Percentage of Cu and N retention did not affect by dietary Cu or SAA. In average, 83.7% of Cu intake excreted from feces. These results indicated that increasing the amount of dietary Cu and SAA did not significantly affect the pig performance and percentage of Cu and nitrogen retention, whereas supplemental Cu to weanling pigs diets increased the amount of Cu excretion. The increase of dietary SAA resulted in increasing the serum SAA. There were no interactive effects (P > 0.05) of supplemental Cu and SAA on performance or Cu and N metabolism of pig. |
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