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Effects of formic acid in abalone diets that contain ingredients derived from fish processing by-products

机译:甲酸中含有含有鱼类加工副产物的成分的脂肪酸的影响

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摘要

The study aimed to investigate the effects of formic acid inclusion in abalone diets, which contained ingredients produced from fish processing by-products, and to quantify effects on production performance. Four diets (a commercial reference and iso-nutrient diets containing fish silage oil, unprocessed rainbow trout viscera or shrimp protein hydrolysate) were evaluated both with and without addition of 2 g kg(-1) dietary formic acid, thus yielding a total of eight treatments, in feeding trials with cultured South African abalone Haliotis midae. Results indicated that inclusion of unprocessed rainbow trout viscera without formic acid decreased production performance of experimental animals, as evidenced by significantly decreased final animal weight and daily weight gain, and significantly increased feed conversion ratio compared to the iso-nutrient control. The decreased production performance was attributed to decreased feed water stability of the diet incorporating untreated trout viscera. Dietary formic acid supplementation partially mitigated the negative impacts of viscera inclusion on production performance of the experimental animals, as seen in significantly higher final animal weight and daily weight gain, and lower feed conversion ratio when compared to non-formic acid-supplemented, viscera-containing diet. However, no beneficial effects on production performance or water stability were found upon formic acid inclusion in diets not containing trout viscera. In conclusion, dietary formic acid can partially mitigate negative impacts on production performance when unprocessed trout viscera are included in formulated abalone diets by improving feed water stability, but the exact mechanism by which this is achieved was not established.
机译:该研究旨在探讨甲酸含量含量脂肪饮食的影响,含有鱼类加工副产物生产的成分,并量化了对生产性能的影响。用含有2g kg(-1)膳食甲酸,评估四种饮食(含鱼青贮油,未加工的虹鳟鱼或虾蛋白水解产物)的饮食(含有鱼类油,未加工的彩虹鳟鱼或虾蛋白水解产物),从而总共八个治疗,喂养试验与培养的南非鲍鱼卤虫米西斯山脉。结果表明,没有甲酸的未加工彩虹鳟鱼粘膜下降降低了实验动物的生产性能,如终原动物重量和每日体重增加的显着降低,并且与异营养对照相比显着提高了进料转化率。降低的生产性能归因于含有未处理的鳟鱼粘膜的饮食的饲料稳定性降低。膳食甲酸补充部分减轻了内脏夹杂物对实验动物的生产性能的负面影响,如明显更高的最终动物重量和每日体重增加,以及与非甲酸补充,内脏 - 含饮食。然而,没有对不含鳟鱼内脏的饮食中的甲酸含有对生产性能或水稳定性的有益效果。总之,膳食甲酸可以通过改善进料水稳定性包括未加工的鳟鱼饮食时部分减轻对生产性能的负面影响,但未建立实现这一点的确切机制。

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