有機鋅在對斑點叉尾鮰飼料中的應用

wangshangchu · 發(fā)表于 2013-11-15 16:57:40

Aquaculture

Volume 133, Issue 1, 15 May 1995, Pages 73–82

Chelated zinc reduces the dietary zinc requirement of channel catfish, Ictalurus punctatus

Tippawan Paripatananont,

Richard T. Lovellfile:///C:\Users\tianyi\AppData\Local\Temp\ksohtml\wps_clip_image-14716.png

Department of Fisheries and Allied Aquacultures, Auburn University, Auburn, AL 36849 USA

Abstract

The dietary zinc requirements of year-1 channel catfish were determined with an egg-white-based purified diet and with a soybean-meal-based practical diet, each supplemented with serial concentrations of zinc methionine (ZnMet) or zinc sulfate heptahydrate (ZnS). In the egg white diet, supplemental dietary zinc requirements, determined by broken-line regression analysis, for ZnMet and ZnS for maximum weight gain were 5.58 and 18.94 mg/kg, respectively, and for maximum bone zinc deposition were 6.58 and 19.91 mg/kg, respectively. In the soybean meal diet, supplemental dietary zinc requirements for ZnMet and ZnS for maximum weight gain were 5.91 and 30.19 mg/kg, respectively, and for maximum bone zinc deposition were 12.82 and ≥ 80 mg/kg, respectively. The relative bioavailabilities of ZnMet, with ZnS as the standard, were 352% for weight gain and 305% for bone zinc deposition in the egg white diet, and 482% for weight gain and 586% for bone zinc deposition in the soybean meal diet. This experiment showed that ZnMet has approximately 3 times the potency of ZnS in a purified diet and 4–5 times the potency of ZnS in a practical diet containing phytic acid for meeting the dietary zinc requirements of channel catfish.

Keywords： Zinc methionine; Zinc sulfate; Ictlaurus punctatus; Growth fish; Bone zinc deposition

有機鋅可以降低斑點叉尾鮰對日糧鋅的需求

Tippawan Paripatananont, Richard T. Lovell 奧本大學

摘要

為了研究1齡斑點叉尾鮰對日糧鋅的需求量，在蛋清基礎純化日糧和大豆基礎實用日糧中，分別添加不同濃度的蛋氨酸鋅和七水硫酸鋅。以最大增重為評價指標，通過折線回歸分析，在蛋清基礎純化日糧中蛋氨酸鋅和硫酸鋅的最適添加量分別為5.58和18.94mg/kg。以最大骨鋅沉積為評價指標，則分別為6.58和19.91mg/kg。以最大增重為評價指標，通過折線回歸分析，在大豆基礎實用日糧中蛋氨酸鋅和硫酸鋅的最適添加量分別為5.91和30.19mg/kg。以最大骨鋅沉積為評價指標，則最適添加量分別為12.82和≥ 80 mg/kg。以增重和骨鋅沉積為評價標準，在蛋清日糧中蛋氨酸鋅相對硫酸鋅的生物學利用率分別為352%、305%。在大豆日糧組中蛋氨酸鋅相對硫酸鋅的生物學利用率分別為482%、586%。本試驗顯示，為滿足斑點叉尾鮰對日糧鋅的需求，在純化日糧中蛋氨酸鋅的效價約是硫酸鋅的3倍，而在含有植酸的實用日糧中蛋氨酸鋅的效價約是硫酸鋅的4-5倍。

關鍵字：蛋氨酸鋅；硫酸鋅；斑點叉尾鮰；魚增重；骨鋅沉積

在此分享有英文文獻翻譯的同時，還是希望大家能相互交流和討論在水產(chǎn)飼料中使用氨基酸螯合鋅的心得！比如應用效果！