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 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 Comparative Study On Nursing Of Different Strains Of Tilapia (Oreochromis niloticus) In Bangladesh

2016 ◽  
Vol 5 (2) ◽  
pp. 98-106
Author(s):  
MA Hossain ◽  
MJ Islam ◽  
MM Uddin ◽  
MM Hossain ◽  
M Kunda
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Body Weight Gain ◽  
Stocking Density ◽  
Experimental Period ◽  
Mustard Oil ◽  
Feed Conversion ◽  
Different Strains ◽  
The Individual

This study was conducted to investigate and compare the growth performance of four Tilapia strains in hapa nursing with the aim to find out the best strain of tilapia. The research was conducted by four treatments with five replicates each. The tilapia fry were collected from, BFRI source from BFRI HQ, Mymensingh stocked in Treatment-1; unknown source from Hi-Tech Tilapia Hatchery Dagoanbhuiya, Feni in Treatment-2, Philipine strain from Green Field Tilapia Hatchery, Laxmipur in Treatment-3 and fry from Breeding Cohort, Sonar Bangla Hatchery, Bamna, Barguna in Treatment-4. The Individual stocking weight (g) of fry was average 0.01g. The fries were stocked in 12 hapa at same stocking density of 1200 fish/m2. Each of the hapa was 2m × 1m × 1m size and fixed in an earthen ponds. Supplementary feed with 31.29% of protein level consisting of rice bran (25%), mustard oil cake (15%), wheat flour (30%) and fish meal (30%) was given at the rate of 40% of their body weight per day manually, four times a day at the beginning of the experimental period and reduced to 25% of their body weight and continued up to harvesting period. The results showed that fry of Treatment-4 strain was the best strain and had significantly (p < 0.05) higher final mean body weight (FMBW), mean body weight gain (MBWG), specific growth rate (SGR) (9.75%), gross yield (GY) (2.13) and Net yield (NY) (2.12) than the Treatment-1 , Treatment-2 strains and Treatemnt-3 strain. Treatment-4 strain had the fastest growth rate, whereas the lowest performing strain was that from Treatment-2. We also analyzed survival rate of the fish from stocking to harvest, survival rate was highest in Treatment-4 strain (80%) where lowest is Treatment-3. Treatment-4 stain also showed the best feed conversion ratio (FCR) 1.62 than others. Considering the overall performance it can be concluded that tilapia strain collected from Breeding Cohort source is best among the four strains. However, further research may still be needed to compare more strains from different water body to evaluate the genetic potential for Tilapia.International Journal of Natural Sciences (2015), 5(2) 98-106

scholarly journals Evaluation of Hatchability from Various Intraspecific Crosses of Carp and Effect of Frequencies of Feeding on Stocking Density of Common Carp Fry

2019 ◽  
Vol 1 ◽  
pp. 88-95
Author(s):  
O O Jacob ◽  
G S Solomon ◽  
P A Annune
Keyword(s):  
Body Weight ◽  
Single Dose ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Stocking Density ◽  
Fertilization Rate ◽  
Feeding Frequency ◽  
Male And Female ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio

Common carp (Cyprinus carpio) germplasm were sourced from Bauchi and Ibadan aimed at studying their hatchability from the various intraspecific crosses and effect of frequencies of feeding on stocking density of Carp fry. Both male and female were injected with Ovaprim at 0.5ml/kg body weight intramuscularly at a single dose. The number of eggs in 1 gram mass was determined, Fertilization rate and percentage of hatchability were calculated. One hundred and eighty (180) fry of Cyprinus carpio were randomly picked and distributed in nine bowls of 50 litres at three stocking densities with replicates for each treatment. The frequencies of feeding were in these order; Ten (10) fry per bowl of 50 litres were fed twice a day, Twenty ( 20) fry per bowl of 50 litres were fed four times a day, Thirty (30) fry per bowl of 50 litres were fed six times a day, respectively for 8 weeks with 30gm of 0.2mm Coppens starter diet. The Ib♀ x Ba♂ cross had the highest hatchability though highest fertilization rate was recorded by Ba♀ X Ba♂ cross. The various crosses had above 50% hatchability, though percentagehatchability differed significantly at (P <0.05). While the growth pattern of the different stocking densities at different feeding frequencies differed significantly (p<0.05). The intra specific crossing of different sexes from the two sources gave a higher yield as can be seen with the IB♀ x BA♂. Whereas carp fry stocked at a lower stocking density with a fewer feeding frequency had best growth.

scholarly journals Preliminary study of the individual variability of the sexual receptivity of rabbit does

2015 ◽  
Vol 23 (3) ◽  
pp. 163
Author(s):  
M. Theau.Clément ◽  
A. Tircazes ◽  
G. Saleil ◽  
D. Monniaux ◽  
L. Bodín ◽  
...  
Keyword(s):  
Body Weight ◽  
Individual Variability ◽  
Test Period ◽  
Sexual Receptivity ◽  
Genetic Origin ◽  
Test Operator ◽  
Preliminary Study ◽  
The Individual

<p>The aim of this preliminary experiment was to investigate the individual variability of the sexual receptivity of a rabbit doe in the presence of a buck (lordosis position, 0-1  variable). Twenty primiparous does maintained without reproduction were tested over 4 mo (3 tests per week at a 2- or 3-day interval) after their first kindling. Out of 48 tests, the receptivity rate was 52.5±50.0% on average and varied from 20.0 to 73.3% depending on the test day. The does were lactating at the beginning of the test period and a strong receptivity decrease was revealed at the peak of lactation. Receptivity did not vary according to the tester buck or to the test operator. The individual receptivity of does varied from 8.6 to 81.3%; three of them had a receptivity rate lower than 30% and four of them a receptivity rate greater than 70%. No relationship was revealed between average receptivity and body weight or body weight variations around first litter weaning. The repeatability of sexual receptivity of non-lactating does was 23.2%. Lowly receptive does had a shorter average oestrus time (&lt;2 tests) and a longer dioestrus time (≥6 tests), whereas highly receptive does had a longer oestrus time (&gt;4 tests) and a shorter dioestrus time (≤3 tests). The correlation between average receptivity and average oestrus time was 0.80. These results indicate a fairly high individual variability of the expression of rabbit sexual receptivity and of its duration, and justify the exploration of an eventual genetic origin in a subsequent experiment.</p>

scholarly journals Distribution of Metals in Tissues of the Common Carp (Cyprinus carpio L.)

2007 ◽  
Vol 76 (8) ◽  
pp. S93-S100 ◽  
Author(s):  
O. Čelechovská ◽  
Z. Svobodová ◽  
V. Žlábek ◽  
B. Macharáčková
Keyword(s):  
Czech Republic ◽  
Common Carp ◽  
Cyprinus Carpio ◽  
Point Of View ◽  
Metal Concentrations ◽  
The Czech Republic ◽  
Common Carp Cyprinus Carpio ◽  
Cold Vapour ◽  
The Common ◽  
The Individual

The aim of the present study was to investigate the distribution of selected metals (As, Cd,Pb, Hg, Cr, Cu and Zn) in tissues of the common carp (Cyprinus carpio L.) grown in ponds. A total of 125 market-ready carp (aged 3 - 4 years, weight 2312 ± 583 g) from 10 fishponds in the Czech republic were analysed. The tissues analysed included muscle, liver, kidney, spleen, gills, ovaria and testes. Metal concentrations were determined by the AAS, mercury was determined using a cold-vapour AAS analyse (AMA 254). Results showed different affinities of metals to different tissues. The highest concentrations of As and Hg were in muscle tissue, Cu in the liver, and Cd and Zn in the kidneys, compared with levels in other tissues (p < 0.01). The lowest metal concentrations (particularly of Cd) were found in the spleen, gills and gonads. Lead concentrations in the individual tissues were low and practically identical. Chromium concentrations were also balanced with sporadic significant differences (p < 0.05). Significantly higher concentrations of Cu, Cr (p < 0.05) and Zn (p < 0.01) were found in the ovaria compared with the testes. The study showed that meat and gonads of pond carp in the Czech republic are safe from the point of view of contamination with the metals investigated.

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.

scholarly journals Analysis on Contemporary College Students' Mental Health Education

2020 ◽  
Vol 4 (2) ◽  
Author(s):  
Hanying Sun ◽  
Xuemei Yao
Keyword(s):  
Mental Health ◽  
College Students ◽  
Health Education ◽  
Social Life ◽  
University Education ◽  
Individual Growth ◽  
Emotional Communication ◽  
Mental Health Education ◽  
The Common ◽  
The Individual

With the diversification of social life and the diversity of values, contemporary college students face the complicated social life, in the individual growth process also appeared some psychological problems. In the process of many university education, some teachers focus on knowledge training, ignoring the psychological counseling and emotional communication of college students, which is not conducive to the improvement of the adaptability of contemporary college students and the cultivation of comprehensive quality. Based on this, this paper studies and analyzes the common problems in the mental health education of contemporary college students in China, and puts forward corresponding Suggestions.

The Red Neuronal Pigment in the Nervous System of the Mussel, Mytilus Edulis: Localization and Its Effect on Lateral Ciliary Activity with Spectral and Analytical Changes

1981 ◽  
Vol 39 ◽  
pp. 494-495
Author(s):  
Anthony A. Paparo ◽  
Judith A. Murphy
Keyword(s):  
Nervous System ◽  
Mytilus Edulis ◽  
Neuronal Cell ◽  
Ciliary Activity ◽  
Neuronal Cell Bodies ◽  
The Central Nervous System ◽  
Intracellular Organelles ◽  
The Common ◽  
The Individual ◽  
Cryostat Sections

The purpose of this study was to localize the red neuronal pigment in Mytilus edulis and examine its role in the control of lateral ciliary activity in the gill. The visceral ganglia (Vg) in the central nervous system show an over al red pigmentation. Most red pigments examined in squash preps and cryostat sec tions were localized in the neuronal cell bodies and proximal axon regions. Unstained cryostat sections showed highly localized patches of this pigment scattered throughout the cells in the form of dense granular masses about 5-7 um in diameter, with the individual granules ranging from 0.6-1.3 um in diame ter. Tissue stained with Gomori's method for Fe showed bright blue granular masses of about the same size and structure as previously seen in unstained cryostat sections.Thick section microanalysis (Fig.l) confirmed both the localization and presence of Fe in the nerve cell. These nerve cells of the Vg share with other pigmented photosensitive cells the common cytostructural feature of localization of absorbing molecules in intracellular organelles where they are tightly ordered in fine substructures.

Healthy PNPLA3 Risk Allele Carriers Present with Unexpected Body Fat Composition. A Study of One ousand Subjects

2014 ◽  
Vol 23 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Agnieszka Kempinska-Podhorodecka ◽  
Marcin Krawczyk ◽  
Marta Klak ◽  
Malgorzata Blatkiewicz ◽  
Frank Lammert ◽  
...  
Keyword(s):  
Body Weight ◽  
Liver Disease ◽  
Fatty Liver ◽  
Fatty Liver Disease ◽  
Alcoholic Fatty Liver ◽  
The Metabolic Syndrome ◽  
Anthropometric Characteristics ◽  
The Common ◽  
Total Fat ◽  
Alcoholic Fatty Liver Disease

Introduction: The common PNPLA3 (adiponutrin) variant p.I148M represents a major genetic driver of progression in non-alcoholic fatty liver disease (NAFLD). NAFLD is commonly associated with traits of the metabolic syndrome, therefore it is mostly suspected in obese individuals. Here, we investigate the association between the PNPLA3 variant and anthropometric traits in a cohort of healthy individuals.Patients and methods: We recruited 1,000 (500 females; age 18 - 66 years) healthy blood donors. The PNPLA3 variant was genotyped using TaqMan assays. All individuals were phenotyped with respect to anthropometric characteristics. We also determined the percentage of total fat (F%) and active tissue (TA%) of body weight.Results: Healthy carriers of the PNPLA3 [IM] and [MM] genotypes, although not differing in height from individuals with the genotype [II], displayed significantly lower body weight and lower BMI (both P = 0.005), higher TA% (P = 0.03) but lower F% (P = 0.03) and smaller waist, chest and shin circumferences (all P < 0.05). Separate analysis for males and females demonstrated an association between the [IM] and [MM] genotypes and higher TA% but lower F% (P = 0.04) in females. In males, BMI and total weight were significantly (P = 0.04) lower among carriers of the [M] allele.Discussion: Healthy individuals carrying the prosteatotic PNPLA3 allele p.I48M may be leaner as compared to the carriers of the common allele. Hence in clinical practice they might be overlooked since they do not necessarily present with the anthropometric characteristics commonly associated with severe hepatic steatosis.Abbreviations: ATX - autotaxin; BMI - body mass index; F% - total fat of body weight in %; Fkg - total fat of body weight in kilograms; GWAS - genome-wide association study; LPA - lysophosphatidic acid; NAFLD, non-alcoholic fatty liver disease; NASH - non-alcoholic steatohepatitis; PA - phosphatidic acid; PNPLA3-patatin-like phospholipase domain containing 3 (adiponutrin); TA% - active tissue of body weight in %; TAkg - active tissue of body weight in kilograms; WHR - waist-to-hip ratio.

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