Effect of C/N ratio levels and stocking density of Labeo victorianus on pond environmental quality using maize flour as a carbon source

Magondu, Esther Wairimu; Charo‐Karisa, Harrison; Verdegem, Marc

doi:10.1016/j.aquaculture.2013.06.021

Cited by 21 publications

(20 citation statements)

References 21 publications

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“…In the present study, the TN, TP and organic matter (COD Mn , BOD 5 and TOC) accumulated in the tanks with the prolongation of the ex- This result is consistent with the reports that supplementation of Novozymes Pond Protect and Novozymes Pond Plus had limited function in improving water quality in fish polyculture and musselfish integrated culture (Zheng, Tang, Zhang, et al 2017;Zhou, Zheng, Tang, Qin & Wang, 2017). Previous studies indicated that extra carbon addition benefited to reduce ammonia, nitrite, nitrate and TN (Asaduzzaman et al, 2008;Baker, Lazar, Teske & Dick, 2015;Gao et al, 2012;Hari, Kurup, Varghese, Schrama & Verdegem, 2004;Magondu, Charo-Karisa & Verdegem, 2013;Wang et al, 2015;Zhao et al, 2014). Zheng et al (2018) reported that increasing C/N ratio benefited to improve water quality in a mussel-fish integrated system.…”

Section: Discussionsupporting

confidence: 91%

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Effects of microbial products and extra carbon on water quality and bacterial community in a fish polyculture system

2019

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A 55‐day mesocosm experiment was conducted to evaluate the effects of commercial microbial products (Novozymes Pond Protect and Novozymes Pond Plus) and extra carbon (glucose) on water quality and bacterial community in a fish polyculture system. A 2 × 2 layout, including four treatments (non‐supplementation of the microbial products or glucose, adding glucose, adding the microbial products and adding the microbial products and glucose in combination), was established. The microbial products and glucose were added on the 40th day, 46th day and 52th day. Ammonia, nitrite and nitrate reduced in the tanks after glucose addition, while adding the microbial products did not significantly affect ammonia, nitrite, nitrate, reactive phosphate, total nitrogen, total phosphorus, chemical oxygen demand and total organic carbon. Adding the microbial products and glucose affected relative abundance of some bacterial taxa, but did not reshape bacterial community. Non‐positive interactive effect on water quality and bacterial community was detected between the microbial products and glucose. This study reveals that supplementation of the microbial products did not benefit water quality in the fish polyculture system, and glucose addition could reduce ammonia, nitrite and nitrate.

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Section: Discussionsupporting

confidence: 91%

“…; Zhou, Zheng, Tang, Qin & Wang, ). Previous studies indicated that extra carbon addition benefited to reduce ammonia, nitrite, nitrate and TN (Asaduzzaman et al., ; Baker, Lazar, Teske & Dick, ; Gao et al., ; Hari, Kurup, Varghese, Schrama & Verdegem, ; Magondu, Charo‐Karisa & Verdegem, ; Wang et al., ; Zhao et al., ). Zheng et al.…”

Section: Discussionmentioning

confidence: 99%

Effects of microbial products and extra carbon on water quality and bacterial community in a fish polyculture system

2019

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“…The findings of Mokoro et al. on L. victorianus growth performance under high stocking densities of 60, 90 and 120 fish/m 3 , coupled with a further 2 fish/m 2 in open ponds, contradicts the growth performance reported by Owori‐Wadunde (), Magondu, Charo‐Karisa, and Verdegem () and Nyachae et al. ().…”

Section: Discussionmentioning

confidence: 76%

A comparative study ofLabeo victorianus(Bouelenger, 1901) andOreochromis niloticus(Linnaeus, 1758) grown in polyculture systems

Orina

Charo‐Karisa²,

Munguti

et al. 2018

Lakes & Reservoirs

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A polyculture experiment with African carp (Labeo victorianus) and Nile tilapia (Oreochromis niloticus) was conducted for 24 weeks in 12 earthen ponds measuring 150 m2 to assess their compatibility. Monoculture treatments T1 and T4 for L. victorianus and O. niloticus, respectively, were the controls for the two species, while treatments T2 and T3 were a polyculture of L. victorianus and O. niloticus at a ratio of 1:2 and 2:1, respectively. All treatments were carried out in triplicate, with feedings performed twice daily at 09:00 hr and 16:00 hr at 10%, 5% and 3% body weight distributed evenly over the 24‐week growth period. Fish sampling was conducted monthly, while water quality was measured biweekly. Treatment T3 (1L: 2T) had a significantly (p < .05) higher survival (L = 49% and T = 87%), compared to T2 (L = 31% and T = 69%, 2L: 1T). O. niloticus monoculture treatment (T4) exhibited a significantly higher survival (p < .05) and higher growth (80%; 79 ± 20.04 g) than L. victorianus monoculture (T1) (50%; 13.12 ± 4.49 g). Dawn and afternoon temperatures ranged between 20.16–24.49°C and 23.76–31.07°C, respectively. The lowest temperatures were recorded in the months of June, July and August. The NH3 concentration was zero at 14:00 hr for all treatments throughout the growth period, but significantly higher (p < .05) in T1 at 06:00 hr. The pH and DO levels at 06:00 hr and 14:00 hr were significantly different in all the treatments (p < .05). The slow growth of L. victorianus can be associated with the low temperatures and DO levels. However, there is need to identify other factors that may have contributed to the poor growth of L. victorianus. Accordingly, this study recommends L. victorianus growth trials in other culture systems, coupled with different feed formulations, to identify optimal culture conditions.

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“…Stres yang berkepanjangan atau kronis akan berpengaruh pada fisiologi dan sintasan (Huntingford & Damsgard, 2012). Kepadatan yang tinggi juga menyebabkan menurunnya efisiensi pakan, meningkatnya konsumsi energi, mengurangi laju pakan, dan kecernaan Labeo victorianuson (Magondu et al, 2013).…”

Section: (Andi Sagita)unclassified

BUDIDAYA KERANG HIJAU (Perna viridis L.) DENGAN METODE DAN KEPADATAN BERBEDA DI PERAIRAN PESISIR KUALA LANGSA, ACEH

Sagita

Kurnia

Wang

2017

Jurnal Riset Akuakultur

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ABSTRAKKerang hijau merupakan komoditas budidaya laut yang sangat prospektif untuk dikembangkan pada suatu sistem budidaya, karena dapat dilakukan dengan biaya produksi yang rendah namun menghasilkan profitabilitas yang tinggi. Penelitian ini bertujuan untuk mengetahui metode dan kepadatan yang paling optimal untuk budidaya kerang hijau di perairan pesisir Kuala Langsa, Aceh. Metode penelitian menggunakan rancangan acak lengkap faktorial yang terdiri atas faktor metode (long line dan stick) dan faktor kepadatan (20, 30, dan 40 individu/kantong 5,30 L), masing-masing diulang sebanyak empat kali. Berdasarkan sidik ragam data Specific Growth Rate (SGR) dari panjang (SGL L) dan bobot (SGR W) menunjukkan semua perlakuan metode, kepadatan dan interaksi berbeda signifikan pada taraf uji 5% (P<0,05), di mana perlakuan yang paling optimal yaitu perlakuan metode long line dengan kepadatan 20 individu/kantong 5,30 L diperoleh rata-rata nilai SGR (L) sebesar 0,86 ± 0,01%/hari dan SGR (W) sebesar 1,18 ± 0,04%/hari dengan sintasan mencapai 92,50 ± 2,89%. Parameter kualitas perairan selama periode budidaya masih sesuai untuk mendukung kehidupan kerang hijau di mana suhu berkisar 27,5-34,0°C; salinitas 28,5-33,0 ppt; pH 7,8-8,6; dan oksigen terlarut 4,5-6,5 mg/L; serta kecepatan arus 0,1-0,3 m/s. Budidaya kerang hijau dengan metode long line pada kepadatan 20 individu/kantong 5,30 L merupakan pola budidaya yang paling optimal untuk diterapkan di perairan pesisir Kuala Langsa, Aceh. 27.5-34.0°C, salinity 28.5-33.0 ppt, pH 7.8-8.6, dissolved oxygen 4.5-6.5 mg/L, and current velocity 0.1-0.3 m/s.

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Effect of C/N ratio levels and stocking density of Labeo victorianus on pond environmental quality using maize flour as a carbon source

Cited by 21 publications

References 21 publications

Effects of microbial products and extra carbon on water quality and bacterial community in a fish polyculture system

Effects of microbial products and extra carbon on water quality and bacterial community in a fish polyculture system

A comparative study ofLabeo victorianus(Bouelenger, 1901) andOreochromis niloticus(Linnaeus, 1758) grown in polyculture systems

BUDIDAYA KERANG HIJAU (Perna viridis L.) DENGAN METODE DAN KEPADATAN BERBEDA DI PERAIRAN PESISIR KUALA LANGSA, ACEH

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