The population growth and the nutritional status of Moina macrocopa feed with rice bran and cassava bran suspensions

Abstract

Moina macrocopa culture density can be improved by optimizing the fecundity, and somatic growth through the regulation of quality and quantity of feed. The purpose of this study were to determined how to use effectively the rice bran and cassava bran Manihot utilisima suspension on Moina, based on population, neonates production, adult percentage, biomass, metabolisme and nutritional state. In this study, Moina were cultured for eighth days using four concentrations of rice bran suspension and three concentrations of cassava suspension. This research found that M. macrocopa culture with rice bran suspension has higher population, neonates production, adult percentage and biomass than its culture with cassava bran suspension (P<0.05). This study also found that Moina culture with rice bran suspension has higher total value of RNA, total value of DNA, the ratio RNA/ DNA, FCR, and concentration of protein and amino acid than Moina culture with cassava bran suspension. Treatment D with the initial rice bran suspension concentration was 0.3 mL/L and was increased starting the second day and the end concentration on the eighth day was 1.2 mL/L has highest peak population of Moina 17,975 ind/L in seventh day, weight wet biomass 439 mg/L in eighth day and lower FCR 0.94.Keywords: suspension, rice bran, cassava, population, ratio RNA/DNA ABSTRAK Kepadatan populasi dalam budidaya Moina macrocopa dapat ditingkatkan dengan mengoptimalkan fekunditas dan pertumbuhan somatik melalui pengaturan kualitas dan kuantitas pakan. Penelitian ini bertujuan untuk menganalisis efektifitas pengunaan pakan suspensi dedak dan tepung ketela pohon Manihot utilisima dalam budidaya M. macrocopa terhadap populasi, produksi anak per induk, persentase dewasa, biomasa, FCR, dan metabolismenya (asam amino, DNA, RNA, dan RNA/DNA). Di dalam penelitian ini, M. macrocopa dibudidayakan selama delapan hari menggunakan empat konsentrasi suspensi dedak dan tiga konsentrasi suspensi tepung ketela pohon. Hasil penelitian ini menunjukkan bahwa, budidaya M. macrocopa dengan pakan suspensi dedak menghasilkan populasi, produksi anak/induk, persentase dewasa dan biomasa yang lebih tinggi dibandingkan budidaya Moina dengan pakan suspensi ketela pohon (P<0,05). Budidaya M. macrocopa dengan pakan suspensi dedak juga menghasilkan total RNA, total DNA dan nisbah RNA/DNA, konsentrasi protein, dan asam amino yang lebih tinggi dibandingkan Moina dengan pakan suspensi ketela pohon. Perlakuan D dengan pakan suspensi dedak awal 0,3 mL/L dan meningkat mulai hari kedua dengan konsentrasi hari kedelapan 1,2 mL/L menghasilkan puncak populasi tertinggi pada hari ketujuh sebanyak 17.975 ind/L, berat basah biomasa hari kedelapan kultur 439 mg/L, dan FCR yang rendah yaitu 0,94.Kata kunci: suspensi, dedak, ketela pohon, populasi, nisbah RNA/DNA

Enrichment of freshwater zooplankton Moina micrura with probiotics isolated from microalgae

“…While cladoceran genera of larger size tend to maximize early growth to a larger size. Furthermore, Moina population density and growth can be further amplified through increasing fecundity and decreasing the reproductive period by manipulating the quality and quantity of the feed (Hakima et al, 2013;Mubarak et al, 2017;Damayanti et al, 2020). By taking advantage of primitive feeding characteristics, it is possible to manipulate the nutritional value of Moina through enrichment process (Das et al, 2007;Singh et al, 2019).…”

A review on the improvement of cladocera (Moina) nutrition as live food for aquaculture: using valuable plankton fisheries resources

“…Adult Moina usually have higher protein composition than juveniles. However, Moina has a higher nutritional value when compared with Artemia and, furthermore both species breed and grow faster (Mubarak et al, 2017) making Moina comparable to that of Artemia (Mubarak et al, 2017). As compared to other live foods, the cladocerans are high in protein as well as other nutrients (Alam et al, 1993;Altaff et al, 2010;Loh et al, 2012).…”

“…Moina can feed on bacteria, algae and organic detritus (Samir et al, 2015). Moina culture density can also be enhanced by fecundity optimization and somatic development which can be achieved through regulation of quality and quantity of feed (Mubarak et al, 2017). Several feeds, including algae and artificial diets can be fed to Moina in order to enrich their nutritional value (Rasdi and Qin, 2018d).…”

“…Other than microalgae, artificial diets including rice bran, yeast, oil emulsion, chicken and cow manures have been used to enrich cladoceran culture media. Rice bran and cassava bran is an artificial diet that has been directly used in Moina feeding, typically processed into a suspension of small particles (Mubarak et al, 2017). Rice bran is a suitable feed for Moina as it provides multiple nutrients and sources of energy, such as protein (12-13%), lipid (16-205), linoleic acid (6.35-6.85%), acid α-linolenate (0.2-0.27%), vitamin B and minerals (6 -9%) (Faria et al, 2012;Murtaza et al, 2011;Mubarak et al, 2017).…”

Quality and Quantity of Ephipia Moina Macrocopa Resulting From Mating Using Tilapia Fish Feces Suspension Feed

“…Ephipia is harvested by turning/flipping water so that ephipia and dirt accumulate in the middle of the tub. Ephipia is separated from feces and washed three times before storage (24). Analysis of fatty acid ephipia M. macrocopa carried out by using 10 grams of each (wet weight) based on the Fardiaz (1989) method using Shimadzu GC-2010 Gas Chromatography Data Analysis Data from the observations were analyzed using ANOVA.…”