团头鲂的脂肪肝形成及防治研究

STUDIES ON THE FORMATION OF FATTY LIVER IN BLUNT—SNOUT BREAM AND ITS PREVENTION AND CURE

以团头鲂鱼种为对象,设计了10种不同营养水平的饲料,用以诱发团头鲂脂肪肝的产生并研究其防治方法。通过对团头鲂生化指标测定和肝组织学观察,发现在低蛋白、高碳水化合物组,缺乏胆碱时团头鲂产生较严重肝细胞脂肪浸润现象。每千克饲料添加1000毫克胆碱,可防止脂肪肝出现。高油脂细不添加胆碱亦出现肝脂肪浸润。缺乏无机磷也诱发了肝组织异常。高动物蛋白、低碳水化合物饲料,未添加胆碱,脂肪肝现象严重。而以高植物蛋白、低碳水化合物饲料饲养团头鲂,即使不添加胆碱,亦不会产生脂肪肝。此外,本文对团头鲂脂肪肝的形成及防治途径亦提出了讨论。

Ten food formulas with different nutritional levels were designed, taking blunt—snout bream fingerlings as the researched objects, so as to induced the fatty liver in blunt—snout bream and meanwhile study the methods of prevention and cure. It is found that lipid is seriously infiltrated into the liver cells in blunt—snout bream with low protein and high carbohydrate levels, and lack in choline, by the determination of the biochemical targets and the histological observation of liver. Fatty liver could be prevented by adding 1000mg choline in 1000g diet. The lipid infiltration of liver was also discovered in the high fat level group without the addition of choline. The lack in inorganic phosphorus induced the histological abnormal of liver. The phenomena of fatty liber was serious in the group under the condition of high animal protein and low carbohydrate of diet withoyt the addition of choline, whereas the phenomena of fatty liver was not discovered on the group of high plant protein and low carbohydrate without the addition of choline. Besides, the formation of fatty liver in blunt snout bream and its prevention and cure are discussed in this paper.