Effect of biofloc density and crude protein level in the diet on the growth performance, survival rate, and feed conversion ratio of Black Tiger Prawn (Penaeus monodon)

Abstract

The objectives of the present study were to evaluate the best combination of biofloc density in culture media and percentage crude protein content on feed on growth performance, survival rate and feed utilization of the black tiger shrimp (Penaeus monodon) culture system. The Completely Factorial Random Design (CFRD) was used in this study. The first tested factor is the percentage of crude protein in the diet at three levels namely; 35%, 30%, 25%, and the second factor is biofloc density at in three levels namely; 5mlL−1, 10mlL−1, 15 ml L−1. The results showed that the combination of 35% crude protein combined with 10mlL−1 biofloc gave the best results for all measured parameters, with a survival rate of 100%, absolute growth rate was 17.207g, daily growth rate was 0.58g day−1, specific growth rate was 3.528% day−1, feed conversion ratio (FCR) was 0.974, and the feed efficiency was 102.7%. It is concluded that the best combination of crude protein and biofloc density that 10 ml L−1 floc and 35% crude protein diet.

Effect of the probiotic Lactococcus lactis on the microbial composition in the water and the gut of freshwater prawn ( Macrobrachium rosenbergii ) cultivate in biofloc

“…Some authors (Ferreira et al, 2017; Hapsari, 2016; Hu et al, 2017; Miao et al, 2017) underline the importance of biofloc in aquaculture systems, because they decrease susceptibility to diseases and increase digestive efficiency. Supriatna et al (2019) obtained 100% survival of tiger shrimp ( Penaeus monodon ) in treatments with biofloc, associated with less stress and efficient use of nutrients. Ekasari et al (2021) cultured prawns in biofloc and observed a higher weight (36%) compared to the control group, which was attributed to the nutritional contribution of the biofloc.…”

PERFORMA PERTUMBUHAN IKAN NILA MERAH, Oreochromis niloticus PADA SISTEM BIOFLOK DENGAN FREKUENSI PEMBERIAN PAKAN YANG BERBEDA

“…Parameter kualitas air pada pemeliharaan ikan nila merah pada sistem bioflok dengan frekuensi pakan yang berbeda memperlihatkan kisaran yang optimal untuk pertumbuhan dan sintasam ikan. Penerapan teknologi bioflok merupakan alternatif untuk mengatasi masalah kualitas air dalam kegiatan budidaya dan untuk mengatasi dampak negatif limbah akuakultur terhadap lingkungan (Nurhatijah et al, 2016;Zulfahmi et al, 2018;Supriatna et al, 2019). Kualitas air pada penelitian ini disajikan pada Tabel 2.…”

“…Amonia (NH 3 ) dalam media pemeliharaan berasal dari pakan yang tidak termakan, selanjutnya berubah menjadi nitrit (NO 2 ) dan nitrat (NO 3 ) melalui proses nitrifikasi (Azim & Little, 2008;Stein & Klotz, 2016). Aplikasi bioflok pada sistem budidaya ditujukan untuk pengelolaan kualitas air dan mengatasi pengaruh buruk terhadap lingkungan akibat limbah budidaya (Supriatna et al, 2019).…”

Strategi implementasi teknologi biofloc dalam budidaya udang putih Litopenaeus vannamei di Provinsi Lampung

“…Salah satu bakteri heterotrof yang mendominasi sistem biofloc adalah Bacillus (Kasan et al, 2017). Keuntungan dari teknologi biofloc ini antara lain: mempertahankan kualitas air (Avnimelech, 2009;Nurhatijah et al, 2016), sebagai pakan alami sehingga dapat mengurangi kebutuhan pakan komersil (Supono et al, 2014;Supriatna et al, 2019), serta keberadaan bakteri heterotrof dapat menekan pertumbuhan Vibrio (Crab et al, 2012) dan meningkatkan imunitas nonspesifik udang (Panigrahi et al, 2018). Sistem biofloc juga mampu meningkatkan efisiensi penggunaan nitrogen dan fosfor pada pakan udang tambak intensif (Da Silva et al, 2013).…”