CD Tesis

Pengaruh Manipulasi Fotoperiod Terhadap Morfoanatomi Dan Pertumbuhan Ikan Lele Dumbo (Clarias Gariepinus)

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Photoperiod manipulation affects the active period of African catfish Changing in photoperiod duration will affects the physiology of fish in general. A study aims to understand the effects of photoperiod manipulation towards Clarias gariepinus morpho-anatomy and growth was conducted on March–May 2018 in Marine Science Biotechnology Club (MSBC) Marine Science Biotechnology Club (MSBC) dan Laboratory integrated Service Faculty fishery and Marine Universitas Riau. Treatments applied were Control (natural photoperiod), 24G (24 hours dark), 18G6T (18 hours dark and 6 hours light), and 6G18T (6 hours dark and 18 hours light). The fishes were reared in fiber tanks (140 x 60 x 40 cm). The fishes were sampled once/14 days, 4 fishes/ aquarium/sampling. Parameters measured were length-weight relationship, condition factor, hepatosomatic index (HSI), viscerasomatic index (VSI), absolute length and weight, food conversion ratio (FCR), gonad development and body protein/fat. Results shown that photoperiod manipulation affects C. gariepinus morpho-anatomy and growth. Fish reared in natural photoperiod (control) shown the lowest results b was 2.0418, 51.68 BW and 18.39 SL, condition factor was 0.79, VSI was 19.58%, HSI was 6.96%, FCR was 2.20, and body protein was 43.95% and fat was 47.77%. In the fish reared in 24G treatment, b was 1.9262, 52.13 BW and 18.79 SL, condition factor was 0.80, VSI was 23.30%, HSI was 9.38%, FCR was 2.47, and body protein was 48.08% and fat was 49.53%. The highest growth parameters and morpho-anotomy index were found in fish reared in 18G6T. By the end of the experiment, the b value of length-weight relationship was 3.3205, absolute weight and length were 86.70 BW and 17.23 SL, condition factor was 0.84, VSI was 26.84%, HSI was 11.42%, FCR was 1.43, and body protein was 48.40% and fat was 50.38%. In the fish reared in 6G18T, b was 2.6903, absolute weight and length were 49.45 BW and 18.81 SL, condition factor was 0.79, VSI was 23.30%, HSI was 6.80%, FCR was 1.91, and body protein was 46.64% and fat was 49.00%. Early developing gonad (1st maturity stage) was only found in fish reared in 18G6T. Based on data obtained it can be concluded that the photoperiod manipulation affect the morpho-anatomy and growth of C. gariepinus.
Keywords: hepatosomatic index, viscerasomatic index, catfish growth, light effect, morphoanatom

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

10 16. 219 (0004)

Penerbit

Pekanbaru : Universitas Riau – Pascasarjana – Tesis Ilmu Kelautan., 2019

Deskripsi Fisik

xiv, 64 hlm.; ill.; 29 cm

Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

10 16. 219 (0004)

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

PASCASARJANA (MAGISTER) ILMU KELAUTAN

Info Detail Spesifik

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Pernyataan Tanggungjawab

FATAH

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