Effect of feeding frequency and feeding rate on growth performance of juvenile silver pompano, Trachinotus blochii
Effect of feeding frequency and feeding rate on growth performance of juvenile silver pompano, Trachinotus blochii
复制标题
投喂频率和投喂率对银鲳幼鱼生长性能的影响
DOI：
10.4314/wiojms.v15i1
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
A. Mmochi
中科院分区：
文献类型：
--
作者：
S. Hamed;N. Jiddawi;P. Bwathondi;A. Mmochi
布氏鲳鲹（Trachinotus blochii）是水产养殖的理想品种，其养殖成功取决于确定合适的投喂方案。本研究旨在评估布氏鲳鲹幼鱼的理想投喂率和投喂频率。实验采用随机设计同时进行。将180尾鱼（体重7.6±0.5克，体长10.52±0.01厘米）放养在18个1000升的水箱中，养殖8周，每天分别按体重的3%、5%、10%进行单次投喂，或分为3次和6次等量投喂。增重和特定生长率随投喂率的增加而显著提高。表观饲料转化率存在显著差异，单次投喂体重10%（每天每千克体重投喂量）的鱼该值最低。投喂率较高的鱼体内脂肪积累明显更多，水分、蛋白质和灰分含量相应降低，但鱼体组成不受投喂频率影响。布氏鲳鲹幼鱼每天按体重的10%投喂，每天投喂3次和6次时生长性能更佳。建议每天投喂3次，每次按体重的10%投喂，可使布氏鲳鲹幼鱼的生长达到最佳。
The silver pompano Trachinotus blochii is ideal species for aquaculture and its success depends on the identification of proper feeding regimens. The objective of this work was to evaluate the ideal feeding rate and frequency for juvenile silver pompano. The experiments were carried out concurrently in a randomized design. A total of 180 fish (7.6 ±0.5g and 10.52±0.01 cm) were stocked in 18 tanks (1000 L) for 8 weeks and fed at 3%, 5%, 10% body weight (BW) per day either in single, or 3x and 6x equal feedings. Weight gain and the specific growth rate increased significantly with feeding rate. The apparent feed conversion ratio showed a significant difference, with the lowest value observed for fish fed 10% (BW/day) in a single feeding. Fish fed at higher feeding rates accumulated significantly more lipid within the body and had associated decreases in moisture, protein, and ash content, but carcass composition was unaffected by feeding frequency. Juvenile pompano show better growth performance when fed 10% BW/day 3 and 6 times a day. It is suggested that the growth of juvenile pompano can be optimized when they are fed at 10% BW/day in three daily feedings.