scholarly journals A Growth Rate and Feed Habit Analysis of the Ciliate Euplotes sp. Contaminating a Mass Culture of the Rotifer Brachionus plicatilis.

1998 ◽  
Vol 13 (2) ◽  
pp. 85-92
Author(s):  
MASAKAZU J. USHILO ◽  
AKINORI HINO ◽  
MASACHIKA MAEDA
Keyword(s):  
Growth Rate ◽  
Mass Culture ◽  
Brachionus Plicatilis ◽  
Rotifer Brachionus Plicatilis

scholarly journals Cultivation of the microalgae Chaetoceros gracilis to feed the rotifer Brachionus plicatilis

2013 ◽  
Vol 5 (2) ◽  
pp. 189-193
Author(s):  
A.A. Ortega-Salas ◽  
H. Reyes-Bustamante
Keyword(s):  
Growth Rate ◽  
Population Growth ◽  
Brachionus Plicatilis ◽  
Chaetoceros Gracilis ◽  
Rotifer Brachionus Plicatilis ◽  
System Volume ◽  
Exponential Population ◽  
Three Phases

The microalgae Chaetoceros gracilis was cultivated to feed the rotifer Brachionus plicatilis. Microalgae and rotifers were grown separately, each for 10 days in a growing system volume of 62,5mL to 20L (1st phase). This was followed by 10 days in 250L (2nd phase), after 10 days in 1 500L (3rd phase). The growth rate exponential population at intervals of 24h for C. gracilis was 0,72, 0,30, and 0,28cells/mL to three phases of cultivation. Within 24h the arithmetic growth rate for the population of B. plicatilis was 330, 1 858 and 13 912rotifers/day in three phases of cultivation. Twenty-four hour intervals counts from the increasing number of organisms in the cultivation of microalgae, allows the prediction of a rotifer production necessary to feed a certain number organisms.KEY WORDSRotifer culture, population growth, fecundity, Chaetoceros culture

scholarly journals Applying a New Feeding Protocol for Enhancing Mass Culture and Nutritional Value of the Rotifer Brachionus plicatilis Müller, 1786

2020 ◽  
Vol 20 (2) ◽  
pp. 81-89
Author(s):  
Mahmouud Hegab ◽  
Moustafa Sobhy Abdelhameed ◽  
Hoda Shafiek Nasr ◽  
Hesham Abdel Mola
Keyword(s):  
Mass Culture ◽  
Nutritional Value ◽  
Large Scale ◽  
Brachionus Plicatilis ◽  
Small Scale ◽  
Food Regime ◽  
Treatment Control ◽  
Rotifer Brachionus Plicatilis ◽  
Large Scale Culture ◽  
Feeding Protocol

The study tested a new feeding protocol to find out the best program using cheap and available products to enhancement the mass culture and the nutritional value of B. plicatilis. The feeding regime was six artificial treatments formulated from dried yeast (Saccharomyces cervisiae) with sucrose sugar and yeast with molasses in different concentrations. Additionally, a live Cyclotella sp. had been applied as supplementary food to each treatment and as independent treatment (control). B. plicatilis was cultured in small scale to find the best food regime and technique to apply it in the large one. B. plicatilis attained its highest density in the small scale culture (370 Ind.ml1 ) with T1 (30 % yeast, 70 % sugar and Cyclotella sp.) at the 12th day, while the highest population growth rate (PGR) (0.65) was calculated at the 9th day. According to the analysis of variance (ANOVA) and PGR, T1 had been applied in the large scale culture. B. plicatilis samples were composed of 51.6% total protein with 16 amino acids and 33.01% total lipid with 19 identified fatty acids. The study concluded that the treatment (T1) is a suitable diet for enrichment the mass culture and the nutritional value of B. plicatilis.

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