有機鋅在對斑點叉尾鮰飼料中的應用

wangshangchu · 發表于 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飼料中使用氨基酸螯合鋅的心得！比如應用效果！