Growth of Grass Carp Ctenopharyngodon idella Fed on Hybrid Napier Grass (CO-3) Mixed Diet

The study was performed to examine the efficiency of hybrid napier grass (CO-3) mixed diet on growth performance of freshwater fish Ctenopharyngodon idella. Alive grass carp fingerlings were collected from commercial fish farm in Thanjavur from June 2015 to May 2016. Fishes were divided into two groups and acclimated for 7 days before feeding trial. The fishes were fed with control and experimental diet. The growth parameters such ABW, ABL, BWG and SGR were thoroughly studied adopting standard procedure. The result of the study clearly indicates that there was a significant variation in growth of control and experimental fishes. The fish fed with CO-3 grass mixed diet showed elevated level in body weight, body length, weight gain and specific growth rate. This study suggests that the CO-3 grass mixed diet is more suitable for grass carp aquaculture practice. Keywords: Hybrid Napier grass, CO-3, Ctenopharyngodon idella, Specific growth rate.

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Estimating Bacterial Growth Parameters by Means of Detection Times

Applied and Environmental Microbiology ◽

10.1128/aem.65.2.732-736.1999 ◽

1999 ◽

Vol 65 (2) ◽

pp. 732-736 ◽

Cited By ~ 92

Author(s):

József Baranyi ◽

Carmen Pin

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Bacterial Growth ◽

Specific Growth ◽

Growth Parameters ◽

Physiological State ◽

Cell Number ◽

Maximum Specific Growth Rate ◽

Specific Rate ◽

The Individual

ABSTRACT We developed a new numerical method to estimate bacterial growth parameters by means of detection times generated by different initial counts. The observed detection times are subjected to a transformation involving the (unknown) maximum specific growth rate and the (known) ratios between the different inoculum sizes and the constant detectable level of counts. We present an analysis of variance (ANOVA) protocol based on a theoretical result according to which, if the specific rate used for the transformation is correct, the transformed values are scattered around the same mean irrespective of the original inoculum sizes. That mean, termed the physiological state of the inoculum,α̂, and the maximum specific growth rate, μ, can be estimated by minimizing the variance ratio of the ANOVA procedure. The lag time of the population can be calculated as λ = −ln α̂/μ; i.e. the lag is inversely proportional to the maximum specific growth rate and depends on the initial physiological state of the population. The more accurately the cell number at the detection level is known, the better the estimate for the variance of the lag times of the individual cells.

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Growth performance of thai pangus (Pangasius hypophthalmus) in polyculture system using different supplementary feeds

University Journal of Zoology Rajshahi University ◽

10.3329/ujzru.v27i0.1956 ◽

1970 ◽

Vol 27 ◽

pp. 59-62 ◽

Cited By ~ 7

Author(s):

MAB Sayeed ◽

GS Hossain ◽

SK Mistry ◽

KA Huq

Keyword(s):

Growth Rate ◽

Specific Growth Rate ◽

Growth Performance ◽

Protein Level ◽

Specific Growth ◽

Fish Feed ◽

Feed Conversion ◽

Commercial Fish ◽

Final Weight ◽

Feed Protein

Thai pangus polyculture with carps has been increasing for its high potential, however very few attempts were made to compare its growth using different types of feed. A research was undertaken to assess the effect of three types of feed on growth of Thai pangus (Pangasius hypophthalmus) and rohu (Labeo rohita) in polyculture system for 11 months from 15 May 2005 to 15 April 2006 in Khulna. Growth performance using Hand-made Feed (F1) was compared with two commercial fish feed, Sunney Feed (F2) and Saudi-Bangla Feed (F3) in three respective treatments of T1, T2 and T3. All treatments were carried out in triplicate at 24700/ha for Thai pangus and 4940/ha for rohu. Average initial weight of Thai pangus and rohu were 4.5 and 33.5g respectively. Growth performance was influenced by feed type. Average final weight of Thai pangus and rohu were 820 and 710; 846 and 770; and 872 and 717g with specific growth rate 1.58 and 0.93; 1.59 and 0.95 and 1.60 and 0.93 % day -1 in T1, T2 and T3 respectively. Feed conversion ratio was estimated 2.3 in T1, 2.1 in T2 and 1.96 in T3. The result showed a typical increasing trend of final weight and specific growth rate of Thai pangus along with the increasing of feed protein level. But rohu showed highest growth in T2 where protein level was 26-30% which was lower than that of T3 (Protein level 28-32%). The study suggests that suitable protein level and quality feed is required for adequate growth of fish. Key words: Feed, Thai pangus, Polyculture, Growth. Â Â Â doi:10.3329/ujzru.v27i0.1956 Univ. j. zool. Rajshahi Univ. Vol. 27, 2008 pp. 59-62

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Growth Performance of Daphnia sp. Cultured in Different Concentration of Rice Washing Water

Advance Sustainable Science, Engineering and Technology ◽

10.26877/asset.v2i2.6439 ◽

2020 ◽

Vol 2 (2) ◽

Author(s):

Lukman Anugrah Agung ◽

Muh. Herjayanto ◽

Edo Ahmad Solahudin ◽

Rizky Muliani Dwi Ujianti

Keyword(s):

Water Quality ◽

Growth Rate ◽

Population Density ◽

Specific Growth Rate ◽

Growth Performance ◽

Specific Growth ◽

Growth Parameters ◽

Initial Density ◽

Young Stage ◽

Washing Water

Abstract. This study aimed to investigate the effect of the administration of rice washing water in culture medium on the growth performance of Daphnia sp. This research using three different doses of rice washing water i.e 1 mL/L, 3mL/L, and 5 mL/L. Daphnia sp. was cultured with an initial density of 20 ind/L. Observed parameters include growth parameters (population density, size and specific growth rate) and water quality. This result showed that a concentration of 3 mL/L created the highest population of Daphnia sp. density about 620±20 ind/L, number small size (young stage) 81.2%, and the highest specific growth rate about 56.68±0.55%. The water quality content of DO, temperature and pH during this study were in the good range of Daphnia sp. life and reproduction. The research has a conclusion that rice washing water can be used to nutritional sources of Daphnia sp. In the future, it is necessary to make further observations about the reproductive performance of Daphnia sp, given rice washing water through clone culture.Keywords: Live food, Population density, Rice washing water, Size of Daphnia sp., Specific growth rate

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Assessment of the Potential of Lactic Acid Bacteria as Dried Starter Culture for Cereal Fermentation

The Open Biotechnology Journal ◽

10.2174/1874070701408010001 ◽

2014 ◽

Vol 8 (1) ◽

pp. 1-5 ◽

Cited By ~ 1

Author(s):

Amenan A. Soro-Yao ◽

Solange Aka ◽

Philippe Thonart ◽

Koffi M. Djè

Keyword(s):

Growth Rate ◽

Lactic Acid ◽

Lactic Acid Bacteria ◽

Specific Growth Rate ◽

Generation Time ◽

Specific Growth ◽

Growth Parameters ◽

Starter Culture ◽

Glycerol Solution ◽

Kinetic Growth

The kinetic growth parameters [maximal specific growth rate μm (h-1), and generation time g (h)] and viability after stress treatments (dehydration with glycerol solution of increasing concentration, freezing or heating stress) of four lactic acid bacteria [Lactobacillus plantarum (LP), L. fermentum (LF), Leuconostoc spp. (M1) and Lactococcus spp. (M2)] were determined. The maximal specific growth rate (μm) and generation time g ranged between 0.51 h-1 to 0.14 h-1 and 0.61 h to 1.33 h, respectively. We observed that the strains were sensitive to a change in water activity (aw 0.32 final), storage and incubation temperatures. The Strain LF obtained a higher cell concentration and viability, as well as a lower g compared to those obtained by the other strains. The kinetic growth parameters (μm, g) together with viability after stress treatments could be used for the screening of dried lactic acid starter cultures.

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