Smith
Australia
Short Communication
Effects of Meal Frequency on Growth Performance and Feed Efficiency of Two year-Old Mulloway (Argyrosomus Japonicus; Pisces : Sciaenidae) Reared in Tanks
Author(s): Jeffrey A Guy *,Stephen DA ,Smith
Jeffrey A Guy *,Stephen DA ,Smith
Two 4-week tank feeding trials were conducted with market size (1.5 kg+) mulloway (Argyrosomus japonicus) to evaluate current commercial grow-out feeding practices related to short-term fasting. Growth performance, feed intake and efficiency were evaluated in seawater during spring 2013 (September-October, water temperature 18.22- 21.97°C) and autumn 2014 (May-June, 19.42-23.0°C). Mulloway fed continuously in spring on a 6 day on - 1 day off rotation, had the highest condition index (1.12), grew significantly (P < 0.05) faster (SGR 0.35% day-1) and had better feed efficiency (FCE 76.97%) than fish subjected to two different repetitive periods of fasting and satiation refeeding (1 day on -1 day off, SGR 0.24% day-1, FCE 62.57%; 2 days on - 1 day off, SGR 0.22% day-1, FCE 58.24%); despite these fish exhibiting hyperphagia. Feeding vigour and .. View More»
DOI:
10.4172/2155-9546.1000419