The objective of this study was to define attractivity and palatability of juvenile Betta splendens when fed diets containing tilapia meal (TM) and a 5% inclusion of different protein sources: chicken protein hydrolysate (CPH), porcine liver protein hydrolysate (PLH), feather protein hydrolysate (PHP) and porcine mucosa protein hydrolysate (PMH). Five juveniles were utilized with an average weight of 2.92 ± 0.24 g, and an average length of 3.24 ± 0.39 cm. Feeding management was determined via random drawings of both specimens and feed type, with a feeding schedule of four times per day, in which feeding habits were observed regarding the time of capture of the first pellet, number of pellet rejections, number of approaches without pellet capture and number of pellets consumed. The data were submitted to ANOVA, and, subsequently, Duncan's test was performed with a 5% significance. The greatest index of attractivity and palatability was encountered with PLH at 17.14%. The significant effect (p < 0.05) was observed in the feeding behaviour regarding the consumption of pellets. Thus, PLH may be utilized to effectively increase consumption in Betta splendens juveniles as a substitute to tilapia meal and as a means of reducing feed waste in aquariums of this species.

中文翻译：

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不同水解蛋白对观赏物种斗鱼芨芨草的吸引力和适口性 (Regan, 1910)

本研究的目的是确定幼鱼芨芨草的吸引力和适口性当饲喂含有罗非鱼粉 (TM) 和 5% 的不同蛋白质来源的日粮时：鸡蛋白水解物 (CPH)、猪肝蛋白水解物 (PLH)、羽毛蛋白水解物 (PHP) 和猪粘膜蛋白水解物 (PMH)。使用了五只幼鱼，平均体重为 2.92 ± 0.24 克，平均长度为 3.24 ± 0.39 厘米。饲喂管理是通过样本和饲料类型的随机图纸确定的，饲喂计划为每天四次，其中观察第一个颗粒的捕获时间、颗粒拒绝数量、没有颗粒的接近次数等饲养习惯捕获和消耗的颗粒数量。将数据提交给 ANOVA，随后进行 Duncan 检验，显着性为 5%。PLH 的吸引力和适口性指数最高，为 17.14%。显着影响（p  < 0.05) 在关于颗粒消耗的喂养行为中观察到。因此，PLH 可用于有效增加芨芨草幼鱼的消费量，作为罗非鱼粉的替代品，并作为减少该物种水族箱中饲料浪费的一种手段。