The use of napier grass (Pennisetum purpureum) and maize (Zea mays) bran as low-cost tilapia aquaculture inputs

Chikafumbwa, F.J.K.

doi:10.1016/s0044-8486(96)01341-5

Cited by 10 publications

(7 citation statements)

References 2 publications

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“…Liti et al (2005) also observed higher net yields (4469 kg ha )1 ) of O. niloticus for WB than in the present study. No yield data in Kenya are available for MB under semi-intensive culture conditions but good fish yields have been reported from MB in Malawi by Chikafumbwa et al (1993) and Chikafumbwa (1996). A number of factors might have contributed to the lower fish yields observed in the present compared with those from the previous studies.…”

Section: Discussioncontrasting

confidence: 63%

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Growth and economic performance of Nile tilapia (Oreochromis niloticus L.) fed on three brans (maize, wheat and rice) in fertilized ponds

et al. 2006

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Nile tilapia (Oreochromis niloticus L.) was fed rice bran (RB), wheat bran (WB) and maize bran (MB) at 1.5% body weight. Fingerlings averaging 14 g were stocked at 19 462 fish ha−1 in three treatments with six replicates per treatment. Clarias gariepinus was stocked at 250 fish ha−1 to reduce the density of tilapia fry. Growth and economic performance were compared for 250 days in 0.08 ha fertilized ponds. Fish growth was highest (P < 0.05) in MB and least in RB treatment. Growth in WB treatment was intermediate. Feed conversion ratio in MB and WB treatments was similar (P > 0.05), but significantly higher (P < 0.05) than in RB treatment. Water quality parameters were similar (P > 0.05) among treatments. At retail price of US$ 1.28 kg−1 fish, returns above both variable and total costs from MB and WB treatments were positive, while those from RB were negative. However, at US$ 1.79 kg−1 fish, all test‐feeds had positive returns above variable and total costs. In conclusion, MB treatment produced the highest growth, but the highest profitability was obtained in the WB treatment. Under present study conditions, RB was not cost‐effective in the production of O. niloticus. A selling price of US$ 1.79 kg−1 fish is recommended.

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Section: Discussioncontrasting

confidence: 63%

“…MB has not yet been evaluated for semi‐intensive production of tilapia in Kenya, but it has been reported to support good growth of tilapia in Malawi (Chikafumbwa et al. 1993; Chikafumbwa 1996). However, experiments in recirculating system indicated high digestibility of the bran in tilapia (Maina et al.…”

Section: Introductionmentioning

confidence: 99%

Growth and economic performance of Nile tilapia (Oreochromis niloticus L.) fed on three brans (maize, wheat and rice) in fertilized ponds

et al. 2006

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“…Nile tilapia can directly feed on fresh napier grass and consumed napier grass, and Chikafumbwa [ 21 ] suggested that napier grass can be used as a low-cost feed or fertilizer input for tilapia aquaculture which was in line with current results. Moreover, his study reported that napier grass can be fed for the combined production of organic grass carp and tilapia and could provide the BC ratio at 0.59, while this present study showed the BC ratio at 2.63 – 2.64.…”

Section: Resultssupporting

confidence: 75%

The influence of napier grass biomass mixed feed on the biorefinery indicator for Nile tilapia production

Klahan

Krajabthong

Maksiri

et al. 2023

Biomass Conv. Bioref.

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Aquaculture is vital for feeding a growing population as aquatic creatures require more protein. Utilizing protein-rich biomass for feeding animals is a possible solution. Biorefinery technology can extract protein and non-protein components from biomass, creating an economically feasible value chain. This study replaced fish feed with napier grass and used a compensatory response to reduce the cost of feeding Nile tilapia. The trial involved dividing mono-sex male Nile tilapia, initially weighing between 11.10 and 13.60 g/f, into four groups with three replications based on their feeding regime. Therefore, in the study, four groups of Nile tilapia were fed different diets for 90 days. The control group (T1) received a commercial floating pellet diet throughout the trial. Group T2 and T3 received a mix of commercial floating pellet diet and napier grass in varying proportions, and group T4 was fed with only napier grass throughout the trial. The study found that groups T2 and T3 had remarkable fish growth performance, high digestibility of napier grass, and lower feed prices with the highest benefit-cost ratios. The percentage of edible flesh and Hepatosomatic Index (PT2) were higher in group T2 than T3. Cellulase activity decreased with the frequency of napier grass intake, and the amylase activity was higher in T2 than T3, which also had the highest growth performance and feed utilization. Therefore, the study suggests that the optimal feeding regimen for Nile tilapia is T2 or T3, which promotes growth and is cost-effective.

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“…1996), brewery draff (Pouomogne et al . 1992), napier grass (Chikafumbwa 1996) and cottonseed meal (CSM) (Robinson et al . 1984a,b; El‐Sayed 1990).…”

Section: Introductionmentioning

confidence: 99%

Growth, feed utilization and body composition of tilapia (Oreochromis sp.) fed with cottonseed meal-based diets in a recirculating system

Mbahinzireki

Dabrowski

Lee

et al. 2001

Aquaculture Nutrition

142

109

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The suitability of cottonseed meal (CSM) as a major source of plant protein in feeds for tilapia (Oreochromis sp.) was tested by examining growth and feed intake, feed digestibility, liver gossypol concentrations, feed utilization, and body mineral composition. Juvenile tilapia at an initial average size of 11.8 1.6 g were divided into triplicate groups per dietary treatment and oered ®ve dierent formulated diets. In these feeds ®sh meal (FM) protein was gradually replaced by protein from CSM (0, 25, 50, 75, and 100%; diets 1, 2, 3, 4 and 5, respectively). The experiments were conducted in a recirculation system at a water temperature of 27 1°C in glass aquaria for 16 weeks. Tilapia growth did not dier signi®cantly (P > 0.05) with up to 50% substitution of FM with CSM. Fish meal replacement above 50% resulted in signi®cant growth decline with time. Fish fed with 100% FM and diets including 50% CSM had signi®cantly better daily weight gain, daily feed intake and feed eciency ratio than those fed with 100% CSM. Fish fed with 75% CSM and above had lower concentrations of body iron, calcium and phosphorus than controls (100% FM). Concentrations of total gossypol in diets (ranging from 0.11 to 0.44% in diets 2±5) resulted in proportional increase of total gossypol in ®sh liver (32.3, 72.3, 99.4 and 132.1 lg g )1 wet weight) in groups fed with diet 2, 3, 4, and 5, respectively. We concluded that CSM can partially replace FM as a main source of protein in feed for tilapia at not more than 50%. The presence of gossypol in CSM was identi®ed as the major limiting factor for acceptance and utilization of CSM-based diets in tilapia farming. KEY WORDS

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The use of napier grass (Pennisetum purpureum) and maize (Zea mays) bran as low-cost tilapia aquaculture inputs

Cited by 10 publications

References 2 publications

Growth and economic performance of Nile tilapia (Oreochromis niloticus L.) fed on three brans (maize, wheat and rice) in fertilized ponds

Growth and economic performance of Nile tilapia (Oreochromis niloticus L.) fed on three brans (maize, wheat and rice) in fertilized ponds

The influence of napier grass biomass mixed feed on the biorefinery indicator for Nile tilapia production

Growth, feed utilization and body composition of tilapia (Oreochromis sp.) fed with cottonseed meal-based diets in a recirculating system

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