对佛罗里达鲳鱼(Trachinotus carolinus)日粮中碳水化合物酶(木聚糖酶和葡聚糖酶)复合酶的评估

IF 2.3 3区 农林科学 Q2 FISHERIES Journal of The World Aquaculture Society Pub Date : 2024-08-05 DOI:10.1111/jwas.13095
William Stites, Alexis Weldon, João Reis, Paulo Ito, Melanie Rhodes, D. Allen Davis
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引用次数: 0

摘要

佛罗里达鲳鱼(Trachinotus carolinus)可以饲喂以大豆为基础的低动物蛋白日粮。然而,抗营养因子和碳水化合物限制了消化率。膳食碳水化合物酶已被用于改善多个物种的碳水化合物消化率,可能对佛罗里达鲳鱼有益。本研究旨在评估由内-1,4-ß-木聚糖酶和内-1,4-ß-葡聚糖酶(Xyl + Glu)组成的复合碳水化合物酶(Natugrain® TS L,巴斯夫公司,德国路德维希港)对幼年佛罗里达鲳鱼日粮中生长性能、饲料利用率和消化率的影响。使用含 0、0.015、0.030 和 0.045% Xyl + Glu 的等氮(40%)和等脂(8%)试验日粮进行了生长试验。试验在一个有 12 个 1000 升水箱的循环系统中进行。按照随机设计,每个鱼缸放养 20 尾鱼(平均体重:23.34 克 ± 1.49 克)。生长结果表明,生长和饲料转化率没有显著差异(p >0.05);然而,热生长系数在 0.015% 和 0.030% 添加量之间显示出显著差异(p = 0.0499)。与基础日粮相比,所有酶解处理在粗蛋白表观消化率方面都有显著差异(p = 0.029)。结果表明,Xyl + Glu复合酶可以影响蛋白质消化率,但对生长性能没有显著影响。
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Evaluation of a carbohydrase (xylanase and glucanase) enzyme complex in diets for Florida pompano Trachinotus carolinus

Florida pompano, Trachinotus carolinus, can be fed soy-based, low-animal protein diets. However, anti-nutritional factors and carbohydrates limit digestibility. Dietary carbohydrase enzymes have been used to improve carbohydrate digestibility in several species and may be beneficial for Florida pompano. The present study was designed to evaluate the effects of using a carbohydrase enzyme complex (Natugrain® TS L, BASF Corporation, Ludwigshafen, Germany) composed of endo-1,4-ß-xylanase and endo-1,4-ß-glucanase (Xyl + Glu) on growth performance, feed utilization, and digestibility in diets fed to juvenile Florida pompano. A growth trial was conducted with iso-nitrogenous (40%) and iso-lipidic (8%) test diets containing 0, 0.015, 0.030, and 0.045% of Xyl + Glu. The trial was conducted in a recirculating system with 12, 1000-L tanks. Twenty fish (mean weight: 23.34 g ± 1.49 g) were stocked into each tank in a randomized design. Growth results indicated that there were no significant differences (p > 0.05) in growth and feed conversion; however, thermal growth coefficient displayed significant differences (p = 0.0499) between the 0.015 and 0.030% inclusion. All enzymatic treatments displayed significant differences (p = 0.029) in apparent digestibility of crude protein compared with the basal diet. Results indicate that Xyl + Glu enzyme complex can impact protein digestibility but did not significantly affect growth performance.

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来源期刊
CiteScore
5.90
自引率
7.10%
发文量
69
审稿时长
2 months
期刊介绍: The Journal of the World Aquaculture Society is an international scientific journal publishing original research on the culture of aquatic plants and animals including: Nutrition; Disease; Genetics and breeding; Physiology; Environmental quality; Culture systems engineering; Husbandry practices; Economics and marketing.
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