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頁籤選單縮合
題 名 | 飼糧含鉛量對土雞生長性能、鉛蓄積與排泄之影響=Effects of Dietary Lead Levels on Performance, Lead Retention and Excretion in Country Chickens |
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作 者 | 施柏齡; 徐阿里; | 書刊名 | 畜產研究 |
卷 期 | 31:3 1998.09[民87.09] |
頁 次 | 頁279-287 |
分類號 | 437.714 |
關鍵詞 | 鉛; 生長性能; 蓄積; 排泄; 土雞; Lead; Growth performance; Retention; Excretion; Country chicken; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗共用440隻土雞,以飼養試驗及代謝試驗來探討飼糧含鉛量對臺灣土雞生 長性能、代謝及鉛蓄積與排泄之影響。400 隻一日齡土雞依性別分飼於 20 欄,逢機給與處 理飼糧,五種飼糧含鉛量各為 0、15、30、60 及 600 ppm,醋酸鉛用為添加鉛之來源。 每 處理中一欄之雞於飼養至 4、8 及 13 週齡, 各取 6 隻雞屠殺以測定脛骨及肝臟含鉛量。 另 40 隻土雞依上述 5 種飼糧強迫餵食以測定排泄物含鉛量,總排泄鉛量及鉛蓄積量。 經 13 週之飼養試驗結果顯示,雞之飼料採食量及增重隨飼糧含鉛量之提高而下降,鉛含量 60 ppm 時即顯著降低 9 ∼ 13 週齡雞之採食量, 而在各生長階段及飼養全期之增重及飼料╱ 增重均以攝食含 600 ppm 鉛飼糧者較差 (P<0.05)。在代謝試驗結果顯示土雞排泄物含鉛量 及排泄總鉛量亦隨著飼料中鉛含量提高而依次增加, 而 600 ppm 鉛含量處理組之排泄鉛量 則顯著較其他處理組為高 (P<0.05),雞所攝食之鉛有 56 ∼ 76 %排出。 另在組織殘留方 面, 試驗全期各階段在脛骨及肝臟中含鉛量則隨著飼糧中鉛含量增加而提高 (P<0.05),鉛 蓄積在脛骨遠超過在肝臟之蓄積,但未檢測出胸肌肉及腿肌肉有鉛殘留。 |
英文摘要 | A total of four hundreds and fourty country chickens was used in a feeding trial and a metabolic test to evaluate the effects of lead (Pb) levels in diets on performances, Pb excretion and retention in tibia and liver of chickens. Five diets with different levels of Pb at 0, 15, 30, 60 and 600 ppm, respectively, were used. Lead acetate was used as the Pb source. At 4-2wk, 8-wk and the end of 13-wk feeding trial, 6 chickens from each treatment were killed for analyzing Pb retention in tibia and liver. In metabolic trial, roosters were forced fed 40 g of diet for collecting the excreta. The results showed that feeding diets containing 60 ppm Pb decreased (P<0.05) the feed intake and growth rate of chicken during 9 to 13 wks of age. The dietary addition of 600 ppm Pb depressed the growth and feed/gain during each stage and the whole feeding period. Pb in excreta and total Pb excreted increased as the levels of dietary Pb were increased (P<0.05). About 56-70% of Pb intake were excreted. The Pb stores in tibia were higher than those in livers. The Pb residues in breast and leg muscle were not detected. The Pb residues in tibia and liver increased as the levels of dietary Pb were increased (P<0.05). Diets containing 600 ppm Pb was fed the highest accumulation of Pb in the tibia and the liver was observed (P<0.05). |
本系統中英文摘要資訊取自各篇刊載內容。