Estimating digestible protein requirements of silver perch, <i>Bidyanus bidyanus</i>
 Mitchell

Allan, Geoff L.; Johnson, Roy A.; Booth, Mark A.; Stone, David A.

doi:10.1046/j.1365-2109.2001.00562.x

Cited by 14 publications

(37 citation statements)

References 18 publications

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“…The diet contained a crude protein level similar to that recommended by several Australian researchers (Allan 1995;Allan and Rowland 1992;Allan et al 2001), although another study has found higher protein levels (42.15%) were necessary to maximize growth of B. bidyanus (Yang et al 2002). Growth of tank-raised fish diet 1 was better, and this diet also contained a higher protein level.…”

Section: Discussionmentioning

confidence: 82%

“…Large-scale production trials have found that fish cultured in earthen ponds grew successfully on diets with protein levels of 31% to 35% (Allan 1995;Allan and Rowland 1992;Allan et al 2001). However, much research into diet formulation for B. bidyanus has occurred in ponds where naturally occurring food sources are also available, e.g., zooplankton, invertebrates, or plant material, and the contribution of such sources to growth has not been quantified (Allan et al 2000;Allan and Rowland 2005;Rowland et al 2005Rowland et al , 2007.…”

Section: Introductionmentioning

confidence: 98%

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The Contribution of Naturally Occurring Food Items to the Diet ofBidyanus bidyanusWhen Fed Differing Formulated Diets

Duffy

Godwin

Purvis

et al. 2013

Journal of Applied Aquaculture

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Fish raised in ponds and fed formulated feed also have access to naturally occurring food items. The contribution of these food items to growth of Bidyanus bidyanus was investigated by assigning fish to four treatments: in diet 1, caged fish were fed a high protein feed (52% CP); in diet 2, caged fish were fed a medium protein feed (30% CP); in diet 3, caged fish received no feed; and in diet 4, uncaged fish received no feed. Survival between caged treatments was similar (88%-96%), and fish performed best when fed a high-protein feed. Modelling of C and N stable isotope ratios showed formulated pellets provided 12% to 84% of the growth of fish fed diet 1 or 2, while invertebrates provided between 4% and 74%. The majority of growth of fish in diet 3 was from zooplankton (54%-76%) and invertebrates for fish in diet 4 (6%-94%). Implications for low intensity production of B. bidyanus are discussed.

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Section: Discussionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 98%

The Contribution of Naturally Occurring Food Items to the Diet ofBidyanus bidyanusWhen Fed Differing Formulated Diets

Duffy

Godwin

Purvis

et al. 2013

Journal of Applied Aquaculture

View full text Add to dashboard Cite

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“… † Composition calculated from previous analyses (corrected for measurement of protein of current ingredients) and measured digestibility coefficients (Allan et al . 2001).…”

Section: Methodsmentioning

confidence: 99%

Performance and sensory evaluation of silver perch (Bidyanus bidyanus Mitchell) fed soybean or meat meal-based diets in earthen ponds

Allan

Rowland

2005

Aquac Research

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The performance of silver perch fed a commercially available diet based on meat meal (38%), grain legumes (18%), oilseeds (10%), wheat millrun (20%), fishmeal (5%) and fish oil (3%) was compared with experimental diets based on alternative protein sources in two experiments. In Experiment 1, two experimental diets contained similar contents of fishmeal and fish oil as the commercially available reference diet, but soybean (25%) and wheat millrun (>31%) were used to reduce animal protein meals by approximately 50%. The digestible protein and digestible energy of the two experimental diets was either slightly lower (31.5% and 12.8 MJ kg−1) or slightly higher (34.9% and 14.3 MJ kg−1) than the reference diet (32.1% and 13.2 MJ kg−1). In Experiment 2, the two experimental diets contained no fishmeal but included higher amounts of rendered animal meals (41–48%). One of the diets had similar digestible protein to the reference diet (32%) while the other had only 25% digestible protein. Silver perch (38 g for Experiment 1 and 59 g for Experiment 2) were stocked into each of nine 0.1 ha earthen ponds with fish in three ponds fed each diet for 191 days (Experiment 1) or 187 days (Experiment 2). Survival was >94% in all ponds in both experiments. In Experiment 1, growth rates and feed conversion ratios (FCRs) ranged from 2.1 to 2.4 g fish−1 day−1 and 1.7 to 1.9 respectively. Growth rates were significantly (P<0.05) lower for fish fed the experimental diet with the lowest digestible energy content. Growth rates for fish fed the other experimental diet and the reference diet were similar (P>0.05). In Experiment 2, growth rates and FCRs ranged from 2.3 to 2.4 g fish−1 day−1 and 1.6 to 1.7. There were no significant differences in fish performance indices for any of the three diets although experimental power was low (power=0.31). A blind consumer sensory evaluation (taste panel) of fish fed the three diets in Experiment 2 rated fish as ‘highly acceptable’. The diet with the lowest digestible protein content produced the best fish in terms of ‘smell liking’, ‘flavour liking’, ‘muddy flavour strength’ and ‘fresh flavour strength’. These results confirm that soybean meal and/or rendered animal protein ingredients including meat meal and poultry offal meal, and wheat can form the basis for high‐performance, low‐cost diets for intensive pond culture of silver perch.

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“…Kibria et al (1997b) reported that small silver perch (1.2–2.1 g) fed a 45% protein diet had higher weight gain than fish fed diets with 35 or 53% protein. The optimum level of digestible protein for silver perch diets with 13.4–14.7 MJ/kg digestible energy is 28%; at higher protein levels, there is no significant increase in protein deposition (Allan et al 2001). Yang et al (2002) also found a similar relationship in small silver perch (2.7 g) fed diets with 15.1 MJ/kg energy where both percent weight gain and feed efficiency increased significantly with increasing dietary protein levels up to 37%, but there were no significant differences from 37 to 55%.…”

Section: Diets and Feedingmentioning

confidence: 99%

“…Gut lengths of silver perch fed low‐protein/high‐carbohydrate diets were longer than those fed high‐protein/low‐carbohydrate diets, and the hepatosomatic index was inversely related to dietary protein (Yang et al 2002). As dietary protein levels increase, whole‐body protein content and moisture of silver perch increase and lipid content decreases (Allan et al 2001; Yang et al 2002).…”

Section: Diets and Feedingmentioning

confidence: 99%

Review of Aquaculture Research and Development of the Australian Freshwater Fish Silver Perch, Bidyanus bidyanus

Rowland¹

2009

J World Aquaculture Soc

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Silver perch, Bidyanus bidyanus (Mitchell), is a freshwater fish that is endemic to the Murray‐Darling River System, Australia. Over recent decades, its distribution and abundance in the wild have declined, and it is now a threatened species with the conservation status of “vulnerable.” Silver perch is a schooling, omnivorous fish, with white flesh, few bones, and high levels of omega fatty acids, and its aquaculture potential has long been recognized. Hatchery techniques, based on hormone‐induced spawning of captive broodfish in tanks and rearing of larvae in fertilized earthen ponds, were developed in the early 1980s. Fingerlings are currently used for stock enhancement and conservation or sold for commercial grow‐out or stocking farm dams. Research into the grow‐out of silver perch commenced in 1990 and demonstrated that it is an excellent fish for culture in static aerated earthen ponds with high survival rates (>90%), fast growth rates (2–5 g/fish/d) at high stocking densities (20,000/ha) leading to high production rates (10 tonnes/ha/yr). Since 1996, there has been research into nutrition, diet development, feeding strategies, broodfish domestication and management, culture in tanks and tank‐based recirculating aquaculture systems, diseases, health management, genetic improvement, and cage culture. Silver perch is a hardy species that performs well under different culture conditions and on diets with no or low levels of fish meal. Technology has been transferred to industry through major conferences in 1994 and 2003 as well as workshops, field days, extension, seminars, and numerous scientific and technical publications. The high quality of silver perch and its excellent culture attributes suggest that the species has the potential to form a large industry based on high‐volume, low‐cost production. However, despite these features and a strong technical base provided by research and development, industry growth has been limited and a relatively small industry currently produces only around 500 tonnes annually. Development has been restricted by a number of factors: poor site selection and design of some farms; use of inappropriate husbandry and/or production strategies; difficulties with pond production, including significant losses to bird predation and diseases; high costs of feeds; limited marketing and promotion; no processing component; no large‐scale investment; and the failure of many farms that were too small to be economically viable. Recent research has found that silver perch performs well in cages (high survival [>90%], good growth [1.7–3.5 g/fish/d], and high production rates [50–90 kg/m3]), and cage culture has advantages such as ease of management and prevention of bird predation that may help overcome some of the problems associated with pond production. Improved health management, new production strategies, cage culture, use of interstrain hybrids and other genetically improved fish, and integration with cotton and other irrigation industries offer opportunities for increased produ...

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Estimating digestible protein requirements of silver perch, Bidyanus bidyanus Mitchell

Cited by 14 publications

References 18 publications

The Contribution of Naturally Occurring Food Items to the Diet ofBidyanus bidyanusWhen Fed Differing Formulated Diets

The Contribution of Naturally Occurring Food Items to the Diet ofBidyanus bidyanusWhen Fed Differing Formulated Diets

Performance and sensory evaluation of silver perch (Bidyanus bidyanus Mitchell) fed soybean or meat meal-based diets in earthen ponds

Review of Aquaculture Research and Development of the Australian Freshwater Fish Silver Perch, Bidyanus bidyanus

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