scholarly journals Growth and production performance of carps in shaded pond in Barisal, Bangladesh

2017 ◽  
Vol 14 (2) ◽  
pp. 235-241
Author(s):  
RJ Rumpa ◽  
MM Haque ◽  
MM Alam ◽  
SM Rahamatullah
Keyword(s):  
Body Weight ◽  
Common Carp ◽  
Quality Parameters ◽  
Production Performance ◽  
Individual Growth ◽  
Catla Catla ◽  
Highest Weight ◽  
Different Types ◽  
The Individual ◽  
Supplementary Feed

The shaded nature of ponds in Barisal region constrained the pond polyculture. The present study was conducted with such shaded ponds to evaluate the growth and production performance of different carp species including rohu (Labeo rohita), catla (Catla catla), mrigal (Cirrhinus cirrhosus) and common carp (Cyprinus carpio) in polyculture system. In this experiment, polyculture of carps at similar densities were conducted in two different types of shaded ponds selecting nine ponds at Dinar village in Charkawa Union of Barisal Sadar sub-district. Out of 9 ponds, 5 were heavily shaded ponds (HSP) and 4 were moderately shaded ponds (MSP) considered as T1 and T2, respectively. The average area of HSP and MSP was 0.03±0.01 and 0.07±0.03 ha, respectively which were experimented for a period of l80 days from July to December 2013. Carps were stocked at the rate of 14820/ha with the ratio of rohu, catla, mrigal and common carp - 2:1:2:1. Carps were fed with supplementary feed of the mixture of rice bran, wheat bran and mustard oilcake at the rate of 10% body weight for first 3 months and 5% body weight for last 3 months. The water quality parameters such as temperature, dissolved oxygen, pH, nitrite and ammonia were recorded. The highest weight gain was found in common carp (467.00±0.00 g) in T1 and lowest weight gained in mrigal (172.46±26.80 g) in T1. Apart from common carp, the individual growth and production of other species was higher in MSP compared to HSP. The higher production was obtained in T2 (2122.92±333.60 kg/ha/year) compared to T1 (1547.79±132.94 kg/ha/year).J. Bangladesh Agril. Univ. 14(2): 235-241, December 2016

scholarly journals Preliminary study on the production of common carp cultured in freshwater river cages

2014 ◽  
Vol 4 (1) ◽  
pp. 24-27
Author(s):  
AHM Kohinoor ◽  
MM Rahman
Keyword(s):  
Body Weight ◽  
Common Carp ◽  
Stocking Density ◽  
Protein Diet ◽  
Individual Growth ◽  
Individual Weight ◽  
The Common ◽  
Preliminary Study ◽  
The Individual ◽  
Freshwater River

A preliminary study was conducted to assess the performance of the common carp, cultured in freshwater river of Brahmaputra cages at different stocking densities during November 2011 to March 2012.The stocking densities tested were 80, 100 and 120 fish/m3. Fish were fed a 28% protein diet at the rate of 15-5% of body weight. The result of the study showed that fish in the T1 stocked at the rate of 80 fish/m3 resulted the best individual weight followed by T2 and T3. The productions of fish in T1, T2 and T3 were 22.33±1.20, 19.00±0.58 and 18.00±1.15 kg/m3, respectively. The results of the present study indicated that the best individual growth and production of common carp was obtained at a density of 80 fish/m3. The results also showed that the individual mean harvesting weights were negatively correlated with stocking density. Therefore, the stocking density of 80 fish/m3 is considered optimum for the rearing phase. DOI: http://dx.doi.org/10.3329/ijarit.v4i1.21086 Int. J. Agril. Res. Innov. & Tech. 4 (1): 24-27, June, 2014

scholarly journals Growth performance of silver carp (Hypophthalmichthys molitrix) in cage stocked at different densities

2018 ◽  
Vol 16 (2) ◽  
pp. 322-327
Author(s):  
Rumana Akhtar Jui ◽  
Mohammad Mahfujul Haque ◽  
SM Rahmatullah
Keyword(s):  
Growth Performance ◽  
Silver Carp ◽  
Quality Parameters ◽  
Individual Growth ◽  
Phytoplankton Production ◽  
Total Production ◽  
Hypophthalmichthys Molitrix ◽  
Highest Weight ◽  
Significant Difference ◽  
Cage Size

An experiment was conducted to evaluate the growth performance of silver carp (Hypophthalmichthys molitrix) in cage stocking at different densities. It was expected that silver carp could grow feeding on plankton without external feeding. In this experiment, silver carps in nine cages were stocked in three different stocking densities such as 20, 30 and 40 fishes/m3 designated as treatments T1, T2 and T3, which were located in the south west corner of the L-shaped pond in Field Laboratory Complex, Faculty of Fisheries, Bangladesh Agricultural University (BAU), Mymensingh consisting of three treatments with three replications of each for a period of 90 days from 18th August to 17th November, 2015. Each cage size was 1m x 1m x1m (length x width x height) and silver carp was cultured in the cage with natural feed which filtered phytoplankton mainly. Twenty five genera of phytoplankton were identified in pond and the average phytoplankton production was around 8.44x105cells/liter. Water quality parameters such as temperature, dissolved oxygen, pH and transparency were recorded fortnightly. At the completion of the experiment, weight showed significant difference (p>0.05) among three treatments although length didn’t vary significantly. The highest length gain (18.61+0.369 cm) and the highest weight gain (62.52+2.249 g) were found in T1. The highest SGR% for silver carp was found in T1 and the highest total production was obtained in T3 (5.00+ 0.015 kg/m3). Individual growth performance of silver carp was satisfactory. Further studies are needed with different stocking densities and duration to verify the result.J. Bangladesh Agril. Univ. 16(2): 322-327, August 2018

scholarly journals STUDIES ON JOINT TOXIC EFFECTS OF A GLYPHOSATE HERBICIDE (FOZÁT 480) AND A HEAVY METAL (CADMIUM) ON CHICKEN EMBRYOS

AGROFOR ◽  
2018 ◽  
Vol 2 (3) ◽  
Author(s):  
Rita SZABÓ ◽  
Géza SZEMERÉDY ◽  
Éva KORMOS ◽  
József LEHEL ◽  
Péter BUDAI
Keyword(s):  
Body Weight ◽  
The Body ◽  
Toxic Effects ◽  
Chicken Embryos ◽  
Body Weight Data ◽  
Different Types ◽  
Glyphosate Herbicide ◽  
The Individual ◽  
Chicken Eggs ◽  
Weight Data

The aim of the study was to determine the individual and combined toxic effects ofthe herbicide Fozát 480 (glyphosate [isopropylamine salt] 480g/l) and cadmiumsulphate (CdSO4) on the development of chicken embryos. On the first day ofincubation, chicken eggs were injected with 0.1 ml of cadmium sulphate solution(0.1%) and/or with 0.1 ml of Fozát 480 (2.0%). The chicken embryos wereexamined on the 19th day by measuring the rate of embryo mortality and bodyweight and by identification of different types of developmental anomalies andmacroscopic malformations. The body weight data were statistically evaluated byone-way ANOVA and Dunnett tests, while the embryonic mortality and thedevelopmental anomalies were analysed by Fisher test. Our teratogenicity studyrevealed, that the combined administration of cadmium sulphate and glyphosate(isopropylamine salt) containing herbicide formulation caused a significantreduction in the body weight of embryos and increased the rate of embryonicmortality. The joint toxic effect of cadmium sulphate and Fozát 480 is an additiveeffect compared to the individual toxicity of the test materials.

scholarly journals Comparative Study on Growth and Survival Rate of Oreochromis niloticus (Linnaeus 1758) Treating with Supplementary Feed at Different Feeding Regime

2018 ◽  
pp. 1-8
Author(s):  
Shyamal Kumar Paul ◽  
Md. Borhan Uddin Ahmed ◽  
Mehedi Mahmudul Hasan ◽  
Dhirendra Nath Barman ◽  
Mazharul Islam
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Growth And Survival ◽  
Highest Weight ◽  
Final Weight ◽  
Final Length ◽  
The Mean ◽  
Experimental Treatments ◽  
Supplementary Feed ◽  
Length Gain

This experiment was designed with three experimental treatments namely T1 (natural feed), T2 (feeding with 10% body weight) and T3 (feeding with 5% body weight) for ten weeks. In the content of 33.8% of crude protein (CP), 11.2% of crude fiber (CF), 6% of fat and 10.2% of ash content feed were used as an experimental diet in this experiment. The stocking densities were 280 fish decimal-1 in three treatments where the mean initial weight of fry was 20 ± 0.2 g in all treatments combined and at the end of the experiment the mean final weight was found as 58.9 ± 2.86 g, 134.4 ± 3.62 g and 142.5 ± 4.23 g for T1, T2, and T3 respectively. Mean initial length was 10.2 ± 0.01 cm in three treatments and final length was found as 14.58 ± 1.60 cm, 18.74 ± 1.23 cm and 20.16 ± 2.08 cm in T1, T2 and T3 respectively. The mean weight gains 38.9 ± 1.53 g, 114.4 ± 3.05 g and 122.5 ± 1.5 g, mean length gain 4.38 ± 0.24 cm, 8.54 ± 0.65 cm and 9.96 ± 0.59 cm, mean SGR 1.76%, 3.5% and 3.82% were recorded in T1, T2 and T3, respectively. The highest weight gain, length gain and SGR were found in T3 and the lowest was found in T1. The survival rate was 82%, 88% and 94% in T1, T2 and T3, respectively. FCR values were found as 3.49 ± 0.5 and 2.51 ± 0.4 in T2 and T3. The result demonstrated that feeding with 5% body weight had a better effect on the growth and survival rate of monosex (male) O. niloticus.

scholarly journals Impact of stocking density on growth and production performance of monosex tilapia (Oreochromis niloticus) in ponds

2016 ◽  
Vol 2 (3) ◽  
pp. 471-476
Author(s):  
Md Mamunur Rahman ◽  
Debashis Kumar Mondal ◽  
Md Rurul Amin ◽  
Mohammad Golam Muktadir
Keyword(s):  
Body Weight ◽  
Survival Rate ◽  
Growth Parameters ◽  
Stocking Density ◽  
Quality Parameters ◽  
The Body ◽  
Fish Growth ◽  
Production Performance ◽  
Cost Ratio ◽  
Short Period

Stocking density is considered one of the important factors affecting fish growth. The study was aimed to compare the growth parameters of monosex tilapia at various stocking densities. The experiment was carried out during the period from 06 August to 22 December 2014. Three stocking densities were used as 125, 250 and 375 fish/dec and designated as treatment T1, T2 and T3 respectively each having two replicates. All the fishes were of same age group having average initial body weight of 1.34g. A commercial feed was supplied at the rate of 40% of the body weight and then gradually it was readjusted to 20%, 10%, 5% and 3% respectively and continued up to the end of the experiment. The water quality parameters were monitored at 14 days interval and the ranges were: temperature 19.34 to 31.40°C, pH 6.83 to 8.03, dissolved oxygen 4.78 to 6.82 mg/l and transparency 29.02 to 49.45cm.The result of the present study showed that the mean weight gain was significantly (P<0.01) highest in T1(120.58g) followed by T2(89.74g) and T3(74.58g).The average specific growth rates (SGR) was 2.590, 2.560 and 2.598 (%/day) in treatment T1, T2 and T3 respectively. There was significant (P<0.01) differences among the survival rate. The survival rate 87% was significantly highest in T1followed by 76% in T2 and 69% in T3.The fish productions were 13.25, 17.30 and 19.64 kg/decimal in T1, T2 and T3 respectively. Although the highest production was obtained in T3 but individually growth performance of monosex tilapia was highest in T1. The highest net profit was found (BDT 3,373.30) inT1compared toT2 (BDT 3,017) and T3 (BDT 2,918). The highest benefit cost ratio (BCR) was 1.79 in T1followed by 1.44 in T2and 1.28 in T3. Based on the result of present experiment, fish farmers might be suggested to rear tilapia at lower stocking density to get higher growth, survival and benefit in a short period of time.Asian J. Med. Biol. Res. September 2016, 2(3): 471-476

Production at the Individual Level

2020 ◽  
pp. 127-148
Author(s):  
Michael J. Fogarty ◽  
Jeremy S. Collie
Keyword(s):  
Body Weight ◽  
Temperature Effects ◽  
Aquatic Organisms ◽  
Individual Growth ◽  
Ecological Research ◽  
Response Variable ◽  
Individual Level ◽  
Natural Choice ◽  
Allometric Functions ◽  
The Individual

Models of individual growth commonly used in fisheries and ecological research can be built around simple allometric functions representing the build-up of body mass (anabolism) and metabolic loss terms incorporating the effects of respiration, egestion, and excretion. From a bioenergetic perspective, body weight is a natural choice for the response variable in these models because it can be readily recast in terms of energy. Temperature affects virtually every dimension of the biology and ecology of aquatic organisms. Modifications of traditional models of individual growth can be augmented to account for temperature effects. The development of ‘full’ bioenergetic models considering each of the individual elements of production is a natural culmination of the issues described above. By invoking mass-balance constraints the bioenergetic approach offers important avenues for estimating elements of production that can be difficult to otherwise obtain.

Specification and Main Paper Quality Parameters

2018 ◽  
Vol 2 (1) ◽  
Author(s):  
Denitsa Ivanova-Alexandrova ◽  
◽  
◽  
Keyword(s):  
Raw Materials ◽  
Quality Parameters ◽  
Individual Characteristics ◽  
Quantitative Composition ◽  
Main Paper ◽  
Different Types ◽  
Promotional Materials ◽  
Materials Used ◽  
The Individual ◽  
Percentage Ratio

The paper pulp and the product created by it are characterized by specific parameters, categorizing the type and the different purpose of the paper and the cardboard. The composition of used ingredients, which, depending on the species and percentage ratio of the individual components, creates high-quality papers, more specialized for printing traditional and digital graphics or lower quality papers intended for domestic, mass use (books, newspapers, magazines, promotional materials, etc.). Basically, the raw materials used for paper production and at the same time responsible for the individual characteristics of the product can be divided into four groups: fibrous material, binders, fillers and colorants. Thanks to their qualitative and quantitative composition, specific physical characteristics are distinguished, determining the surface of the paper (appearance), its opacity or transparency, strength, weight and thickness, grain, aging. The report concerns precisely the specification and quality parameters that give an individual look to the different types of paper and cardboard.

scholarly journals Effects of addition of mola at different densities on production of giant freshwater prawn

2012 ◽  
Vol 10 (1) ◽  
pp. 163-167 ◽  
Author(s):  
R Pervin ◽  
M A Wahab ◽  
K Fatema ◽  
M S R Khan
Keyword(s):  
Body Weight ◽  
Macrobrachium Rosenbergii ◽  
Stocking Density ◽  
Quality Parameters ◽  
Production Performance ◽  
Freshwater Prawn ◽  
Total Production ◽  
Feeding Rates ◽  
Additional Species ◽  
Giant Freshwater Prawn

The effects of mola (Amblypharyngodon mola) at different densities in polyculture with freshwater prawn (Macrobrachium rosenbergii) were investigated at the Fisheries Field Laboratory, Bangladesh Agricultural University,  Mymensingh. The experiment had three treatments, viz. prawn + 1 mola m-2, prawn + 1.5 mola m-2 and prawn + 2 mola m-2 and were treated as T1, T2, and T3, respectively with three replications in each. Prawn stocking density was  same (3 juvenile m-2) in all treatments. Feeds were applied twice daily for prawn. Assuming 80% survival, feeding  rates were gradually reduced to 10-5% of body weight from the beginning to the last month. Water quality parameters  (except transparency, chlorophyll-a) did not vary significantly (P>0.05). Weight gain, SGR (% body weight), gross and  net production of prawn were not significantly different (P>0.05). Higher total production was recorded in T3 (574.61  ±39.58 kg ha-1) followed by TI (531.65±42.40 kg ha-1) and T2 (514.75±77.91 kg ha-1). It was found that addition of  mola at different densities had no effects on survival and production performance of prawn. Therefore, nutrient-dense mola may be stocked as an additional species with freshwater prawn. It might be concluded that treatment T3 was better proposition for prawn-mola polyculture. DOI: http://dx.doi.org/10.3329/jbau.v10i1.12109 J. Bangladesh Agril. Univ. 10(1): 163–167, 2012    

scholarly journals Selected In Situ Hybridization Methods: Principles and Application

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 3874
Author(s):  
Dominika Veselinyová ◽  
Jana Mašlanková ◽  
Katarina Kalinová ◽  
Helena Mičková ◽  
Mária Mareková ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Imaging Techniques ◽  
Cell Communication ◽  
Probe Design ◽  
Rapid Progress ◽  
In Situ Techniques ◽  
Different Types ◽  
Laboratory Procedures ◽  
The Individual

We are experiencing rapid progress in all types of imaging techniques used in the detection of various numbers and types of mutation. In situ hybridization (ISH) is the primary technique for the discovery of mutation agents, which are presented in a variety of cells. The ability of DNA to complementary bind is one of the main principles in every method used in ISH. From the first use of in situ techniques, scientists paid attention to the improvement of the probe design and detection, to enhance the fluorescent signal intensity and inhibition of cross-hybrid presence. This article discusses the individual types and modifications, and is focused on explaining the principles and limitations of ISH division on different types of probes. The article describes a design of probes for individual types of in situ hybridization (ISH), as well as the gradual combination of several laboratory procedures to achieve the highest possible sensitivity and to prevent undesirable events accompanying hybridization. The article also informs about applications of the methodology, in practice and in research, to detect cell to cell communication and principles of gene silencing, process of oncogenesis, and many other unknown processes taking place in organisms at the DNA/RNA level.

Sign in / Sign up

Export Citation Format

Share Document