scholarly journals Sex distributions and growth response in different populations of catfish (Clarias gariepinus)

2020 ◽  
Vol 47 (3) ◽  
pp. 162-172
Author(s):  
I. Abdulraheem
Keyword(s):  
Growth Rate ◽  
Clarias Gariepinus ◽  
Fish Farms ◽  
Daily Growth ◽  
Female Ratio ◽  
Percentage Survival ◽  
Significant Difference ◽  
Final Weight ◽  
Different Populations ◽  
Number Of Males

This study evaluated the gender ratio in Clarias gariepinus production from five different populations. 300 Juveniles fish each were sourced from five (5) fish farms. The fish were grouped based on the farms into five populations (i.e. treatments) and were replicated thrice with each replicate stocked with 100 fish in a square shaped experimental plastic tanks of 1m x 1m x 1m. Data obtained from the experiment were subjected to one-way analysis of variance. Significant differences (p<0.05) were recorded in the values of final weight, mean weight gain, specific growth rate, percentage survival and daily growth rate. The male-female ratio showed that the females were more in number compared to their male counterpart. There was no significant difference in the number of males, number of females and weight of males across the populations. The female C. gariepinus in population 5 had the highest value (246.41±2.73g) of final weight while those in population 3 had the least value (205.95±13.17g) of weight. The fish in population 2 displayed a better growth curve compared to other populations while fish in population 3 displayed the least curve. The curve revealed that the fish grows at almost the same rate from day 0 to day 42 after which their growth pattern changed. This study showed that the number of female fish in any production outweighs the number of males.

A comparative study on the nursery culture of hatchery-reared sub-adult cupped oyster, Crassostrea iredalei (Faustino, 1932), in an earthen pond and a mangrove canal

2018 ◽  
Vol 26 (4) ◽  
pp. 217-222
Author(s):  
Premwadee Chueachat ◽  
Woraporn Tarangkoon ◽  
Suwat Tanyaros
Keyword(s):  
Growth Rate ◽  
Comparative Study ◽  
Condition Index ◽  
Daily Growth ◽  
Nursery Culture ◽  
Absolute Growth Rate ◽  
Significant Difference ◽  
Adult Oyster ◽  
Absolute Growth ◽  
The Mean

Abstract A comparative study on the nursery culture of the spat of the tropical oyster, Crassostrea iredalei, in an earthen pond and a mangrove canal was conducted over two months. The results revealed no differences in the absolute growth rate determined by shell width between the two culture sites (P < 0.05). Sub-adult oysters cultured in the mangrove canal showed a higher absolute growth rate in shell length and a higher daily growth rate than the oysters cultured in the earthen pond (P < 0.05). The mean survival rate of sub-adult oysters cultured in the earthen pond (99.8 ± 0.2%) was significantly higher than for those cultured in the mangrove canal (66.7 ± 31.4%). Decreased density from the loss of sub-adult oyster nursery culture in the mangrove canal led to higher growth performance than in the earthen pond. However, no difference was found for the fraction of oysters larger or smaller than 5 cm for the two culture sites (P < 0.05). A significant difference was noted in the Condition Index (CI) between the two culture sites (P < 0.05). The high primary productivity in mangroves is a major supporter of higher CI in sub-adult oysters cultured in mangrove canals versus in earthen ponds. Water exchange in the earthen pond to maintain calcium and magnesium concentrations resulted in no differences in the shell compressibility of sub-adult oysters compared with those cultured in the mangrove canal.

scholarly journals Culture Pond Influences the Growth and Survival of Clarias gariepinus Fingerlings reared in Poly and Monoculture

2021 ◽  
pp. 22-28
Author(s):  
L. U. Onyia ◽  
I. J. Ochokwu ◽  
I. J. Bargudu
Keyword(s):  
Growth Rate ◽  
Growth Parameters ◽  
Block Design ◽  
Clarias Gariepinus ◽  
Stocking Density ◽  
Physical Space ◽  
Single Species ◽  
Growth And Survival ◽  
Significant Difference ◽  
Earthen Ponds

Monoculture is the rearing of single species of fish in a pond while polyculture is the farming of two or more species in the same physical space. This study aims to compare the growth parameters of Clarias gariepinus fingerlings in monoculture and polyculture, using concrete and earthen ponds in a randomized complete block design. The polyculture, comprised of Clarias gariepinus and Oreochromis niloticus. 480 fingerlings were used; the stocking density was 40fish in a 3x2x1.5m depth with initial weight (4.84±0.11547) for C. gariepinus in monoculture and 40 each in polyculture with an initial pooled weight of O. niloticus (50g) replicated thrice, it was fed for eight weeks with commercial feed (40% crude protein). Weekly, random sampling was done to measure the growth and adjust the feeding rate. The results revealed that polyculture has the best mean final weight (160.07±0.18559g) and weight gain of 155.29, while the highest total length (45.666±3.179) was recorded in monoculture for Clarias gariepinus reared in an earthen pond. The polyculture had the highest specific growth rate (2.46), Relative growth rate (246.49), and condition factor (0.184). There was a significant difference (P<0.05) in monoculture of both concrete and earthen ponds.

scholarly journals Pertumbuhan benih ikan mas, Cyprinus carpio, yang diberi pakan dengan dosis dan frekuensi berbeda

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Tinus O O. Biduan ◽  
Indra R. N. Salindeho ◽  
Hariyani Sambali
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Cyprinus Carpio ◽  
The Body ◽  
Optimum Dose ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Feeding Regime ◽  
Significant Difference ◽  
Recirculation System

The objectives of this research were to find out the optimum dose and frequency of feeding regime to ensure the maximum growth of carp-seeds, Cyprinus carpio, reared in the backyard pond with recirculation system. The experiment was carried out in 2x3 factorial experimental design and the experimental units were designed in randomized block.  Two factors were tested in this experiment; the first factor, dose of feeding, had three levels, 3%, 4% and 5% of the total body weight per day; and the second factor had 2 levels, 2 and 3 times per day.   Hence there were 6 treatments were applied, and each treatment was triplicated.   Each repetition represented group of fish with different weight.  There were 18 experimental units, and each experimental unit was composed of 8 tested fish, therefore there were 144 tested fish, which were weighed at the beginning of the experiment and then every week during the 6 weeks period of the experiment.  The weight data were converted into FCR, absolute, relative and daily growth rate, and were statistically analyzed using JMP statistic-program (SAS-institute).             The results showed the absolute growth of fish at dose of 3% was significantly lower than that of fish at the dose of 4% and 5%, which was not significantly different.   The relative and daily growth rate was not significantly affected by the different dose of feeding regime.  There was no significant difference in FCR, absolute, relative and daily growth rate between fish fed 2 and 3 times per day.  The best FCR, 1,46, was performed by fish fed 3% of the body weight per day, and this value was significantly different with that of the fish fed 4% or 5%.   The results of this experiment suggest that, carp reared in backyard pond with recirculation system should be fed twice a day, with a dose of 3% of the body weight each day.

Effect of temperature and lockdown on daily growth of active cases of COVID-19 in gujarat, western India: a statistical analysis (Preprint)

2020 ◽  
Author(s):  
Bhavin Vasavada
Keyword(s):  
Growth Rate ◽  
Pearson Correlation ◽  
Effect Of Temperature ◽  
Maximum Temperature ◽  
Daily Maximum Temperature ◽  
Daily Maximum ◽  
Western India ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Significant Difference

UNSTRUCTURED Aim of the study: Aim of he study was to analyse correlation of daily maximum temperature on corona virus daily growth rate as well as effect of lockdown on daily growth rate of cases. Materials and Methods: All the data regarding new cases of covid 19 Pandemic in Gujarat was collected from Gujarat health department website., Temperature details were collected from www.accuweather.com. Growth rate was calculated as a percent increase of new cases daily compared to previous day active cases. Relations between trends were calculated from correlation and regression studies. MANNOVA analysis was performed. Results: Total 6625 cases, 4729 active cases and 380 deaths were reported as on 6th May 2020 in Gujarat. Daily maximum temperature was significantly correlated inversely with daily growth rate. (p value= 0.010) with Pearson correlation coefficient =-0.363. Correlation between time since lock down to daily case growth rate was non significant. (p=0.123). Phases of lockdown and growth rates showed significant inverse correlation. (p=0.002). Multivariate ANOVA showed there was statistical significant difference in case growth rate based on daily temperature [p= 0.006 F=4.71] and progression of phases of lockdown (p=0.018, F=3.55). Conclusion: Conclusion increase in temperature has inverse relationship in growth rate in covid 19 pandemic. Lockdown may be useful in decreasing growth.

scholarly journals KINERJA PERTUMBUHAN DAN DINAMIKA KUALITAS AIR PADA BUDIDAYA ANGGUR LAUT (Caulerpa sp.) DENGAN NAUNGAN BERBEDA

2021 ◽  
Vol 19 (1) ◽  
pp. 15
Author(s):  
Riris Yuli Valentine ◽  
I Nyoman Sudiarsa ◽  
Sartika Tangguda ◽  
Dimas Rizky Hariyadi
Keyword(s):  
Growth Rate ◽  
Data Analysis ◽  
Aquatic Plants ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Absolute Weight ◽  
Randomized Design ◽  
Significant Difference ◽  
Absolute Length ◽  
Completely Randomized Design

Seagrapes (Caulerpa sp.) is one of the aquatic plants which tends to grow slowly according to the environmental conditions where sea grapes live. This study aims to determine the growth performance of sea grapes given different shelters. The method used in this study was three treatments, each treatment was repeated three times, with differences in the shade (P1 = paranet), (P2 = without roof), and (P3 = coconut leaves). Data analysis used a non-factorial completely randomized design (CRD). The results of this study are at absolute weights (P1 =1163.3 ± 260a g), (P2 = 210 ± 79.3b g), (P3 = 922 ± 199.5a g), absolute length (P1 = 5.75 ± 1.74a cm), (P2 = 0.59 ± 0 , 07b cm), (P3 = 4.82 ± 0.22a cm), daily growth rate (4.40 ± 0.1a %), (3.76 ± 0.09b %), (4.29 ± 0.09a) and the number of ramuli (P1 = 56.2 ± 21.3a), (P2 = 19.5 ± 2.3b), (P3 = 46.3 ± 3.1a). The conclusion of this study each parameter (absolute weight, absolute length and number of ramuli) has a significant difference.

scholarly journals Influence of feeding regimen on growth parameters of African Catfish (Clarias gariepinus, Burchell 1822)

2019 ◽  
Vol 46 (3) ◽  
pp. 192-204
Author(s):  
O. T. F. Abanikannda ◽  
A. A. Jimoh ◽  
K. O. Bakare ◽  
S. A. Shitta ◽  
Z. F. Shopeyin
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Standard Length ◽  
Condition Factor ◽  
Average Daily Gain ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Total Length ◽  
Final Weight ◽  
Feeding Regimen

An experiment was conducted using 270 African catfish fingerlings to evaluate the effects ofdifferent feeding regimen on growth performance of the fish. The fish were hatched andreared to 12 weeks under similar condition before the commencement of the experiment thatlasted for 40 days. Feeding regimens included equally shared feed based on recommended of5% body weight, and equally spaced feed allocation at 6, 8 and 12 hourly intervals. Each ofthe three treatment groups comprised of six replicates of 15 fish per plastic tank. Body weight,and two linear measurements (total and standard length) were taken twice weekly on each ofthe fish in all the tanks and the respective length-weight relationship and condition factor (K)were computed. Weekly gain, final weight, average daily gain, absolute, relative, specific andmean growth rates for the three groups were evaluated and compared. Results showed that allparameters studied except final total length were significantly (P<.05) affected by feedingregimen. The coefficient of determination for all ANOVA had variable values for all growthparameter; Final Weight (83.11%), Absolute Growth Rate (79.19%), Final Total Length(61.30%), Final Standard Length (60.87%), Relative Growth Rate (38.68%), SpecificGrowth Rate (35.57%), Mean Growth Rate (32.23%) and Condition Factor (12.83%). The 6-hourly treatment group mostly had the highest values across all the parameters studied butwas not statistically different (P>.05) from the values obtained in the 8-hourly group.

scholarly journals PERBANDINGAN JENIS KELAMIN DAN DIMORFISME SEKSUAL PADA PERTUMBUHAN IKAN GURAMI (Osphronemus goramy) SERTA IMPLIKASINYA TERHADAP STRATEGI SELEKSINYA

2017 ◽  
Vol 11 (4) ◽  
pp. 307 ◽  
Author(s):  
Sularto Sularto ◽  
Rita Febrianti ◽  
Suharyanto Suharyanto
Keyword(s):  
Sex Ratio ◽  
Standard Length ◽  
Adult Size ◽  
Male Fish ◽  
Male And Female ◽  
Fish Breeding ◽  
Significant Difference ◽  
Different Populations ◽  
Males And Females ◽  
Number Of Males

Ikan gurami (Osphronemus goramy Lac.) pada ukuran dewasa memiliki bentuk morfometrik yang khas khususnya pada ikan jantan, sehingga dapat dibedakan antara ikan jantan dan betina. Ikan gurami jantan memiliki dahi menonjol dan bibir tebal. Penelitian ini bertujuan untuk mengevaluasi rasio kelamin dan perbedaan performa pertumbuhan antara jantan dan betina. Ikan uji yang digunakan adalah empat populasi ikan gurami yang berbeda yaitu: Kalimantan Selatan, Jambi, Majalengka, dan Tasikmalaya. Penelitian dilaksanakan di Balai Penelitian Pemuliaan Ikan (BPPI), Sukamandi pada bulan Juni 2014 sampai dengan bulan Juli 2015. Hewan uji yang digunakan adalah benih ikan gurami keturunan galur murni berasal dari Kalimantan Selatan, Jambi (strain Batanghari), Majalengka, dan Tasikmalaya. Perawatan telur, pemeliharaan benih, dan pembesaran menggunakan prosedur operasional standar BPPI tentang pemeliharaan ikan gurami. Pemeliharaan ikan gurami dilakukan selama 14 bulan. Hasil penelitian menunjukkan bahwa berdasarkan jenis kelaminnya jumlah ikan gurami betina (67,3%-80,7%) lebih banyak dibandingkan dengan jumlah jantannya (19,3%-32,7%). Setelah mencapai ukuran > 300 g terdapat perbedaan pertumbuhan antara ikan jantan dan betina (P<0,05) yakni jantan tumbuh lebih cepat dibandingkan betina pada semua populasi yakni berkisar antara 4,74%-5,67% untuk karakter panjang standar, dan 14,10%-16,52% untuk karakter bobot. Hal tersebut menunjukkan bahwa ikan gurami memiliki dimorfisme pertumbuhan. Oleh karena itu, ketika dilakukan seleksi berdasarkan pertumbuhan 10% terbaik didapatkan ikan jantan 55%-80% lebih banyak dibandingkan ikan betina (20%-45%).Adult size of giant gouramy (Osphronemus goramy, Lac.) has a distinctive shape of morphometric particularly in male fish, making it easy to distinguish between male and female fishes. Giant gouramy males have a prominent forehead and thick lips. This study aimed to determine sex ratios and differences in growth performance between males and females. This study used 4 progenies of giant gouramy seed from four different populations, namely: Kalimantan, Jambi, Majalengka, and Tasikmalaya, aged 14 months. Eggs incubations,seed maintenance and grow-out were conducted using Standard Operational Procedures of Research Institute for Fish Breeding (RIFB) about the rearing of giant gouramy. Seed rearing were carried out for 14 months. The results showed that, based upon the sex ratio, the number of female was more than the number of males, contituting females 67.3%–80.7% and males from 19.3% to 32.7% of populations. After reaching the size of > 300 g there were a significant difference in growth between males and females (P <0.05), in which males grew faster than females in all populations between 4.74%–5.67% for the standard length and 14.10%–16.52% for the weight characters. IThis result indicated that giant gouramy have growth dimorphism.Therefore, when the selection conducted based on the best growth of top 10%, it was found that the number of male composing 55%–80% was higher than the number of female which only accounted for 20%–45%.

scholarly journals Effect of Different Inorganic Substrates on Growth Performance of African Catfish (Clarias gariepinus, Burchell 1822) and Lettuce (Lactuca sativa L.)

2021 ◽  
Vol 9 (4) ◽  
pp. 714-722
Author(s):  
Murat Yeşiltaş ◽  
Mehmet Ali Turan Koçer ◽  
Hüseyin Sevgili ◽  
Edis Koru
Keyword(s):  
Growth Rate ◽  
Growth Performance ◽  
Lactuca Sativa ◽  
Clarias Gariepinus ◽  
African Catfish ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Lactuca Sativa L ◽  
Inorganic Substrates ◽  
Rock Wool

Lettuce (Lactuca sativa L.) and African catfish (Clarias gariepinus) were preferred to grow in aquaponics due to their high and fast productivity growth. However, limited research was conducted on the impact on different inorganic substrates’ growth performance in aquaponics. In this study, lettuce’s growth performance was determined in four different kinds of inorganic substrates in Nutrient Film Technique (NFT) aquaponics by measuring final weight, daily growth rate, stem diameter, plant and root lengths, leaf number per plant and shoot/root ratio. Polyester fiber, rock wool, zeolite, and gravel were used as inorganic substrate materials. A constant flow rate of 0.3 L/min was maintained using with a submersible pump motor. At the end of the study, the African catfish’s feed conversion ratio was estimated to be 0.66, while the specific growth rate (SGR) was 2.3%. Total lettuce yields for polyester fiber, rock wool, zeolite and gravel were obtained as 5.072,22 kg/m2, 4.934,03 kg/m2, 6.067 kg/m2, and 5.382,64 kg/m2 respectively. There were statistically significant differences for daily growth rate between the inorganic substrates that the significantly highest values were recorded in the zeolite. The results revealed that initial plant length and shoot/root ratio were the significant factors on the growth performance for lettuce in aquaponic system tested. The best lettuce yield performance was observed in zeolite substrate but, economically available option was found as gravel for hydroponic troughs.

scholarly journals PENGARUH PEMBERIAN DOSIS PROBIOTIK YANG BERBEDA PADAPAKAN KOMERSIL TERHADAP PERTUMBUHAN IKAN LELE DUMBO(Clariasgariepinus) PEMELIHARAAN PADAT TEBAR TINGGI

2018 ◽  
Vol 1 (2) ◽  
pp. 22
Author(s):  
Setiawan Eka Putra ◽  
Endah Sri Redjeki ◽  
Sa’idah Luthfiyah
Keyword(s):  
Growth Rate ◽  
Economic Value ◽  
Clarias Gariepinus ◽  
Economic Losses ◽  
African Catfish ◽  
Selling Price ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Absolute Weight ◽  
Randomized Design

African catfish (Clarias gariepinus) is one type of freshwater fish that has high economic value. African catfish with intensive cultivation are hampered by the high cost of feed that is not in accordance with the selling price of African catfish. An alternative effort that can be done is the addition of probiotics to feed which is expected to reduce feed costs. Probiotics are living microorganisms in fish culture that can prevent disease, thereby increasing production and can reduce economic losses. This study aims to analyze the effect of probiotics on the growth of absolute weight and daily growth rate of African catfish. The method used was Completely Randomized Design (RAL) with 4 treatments namely 0, 2, 4 and 6 ml / kg of feed and repeated 3 times. Activities carried out in this study include preparation of containers, seed stocking, fish sampling, feed preparation, feeding and water management. The variables observed were absolute weight growth and daily growth rate. The results showed that the addition of probiotics to commercial feed significantly affected the growth of weight and daily growth rate of African catfish

scholarly journals Grading Effects on Growth and Size Variation of Common Carp Cyprinus carpio Cultivated in Floating Cages

2021 ◽  
Vol 5 (2) ◽  
pp. 214-221
Author(s):  
Rahman Albahadly
Keyword(s):  
Growth Rate ◽  
Weight Gain ◽  
Specific Growth Rate ◽  
Cyprinus Carpio ◽  
Specific Growth ◽  
Daily Growth Rate ◽  
Daily Growth ◽  
Common Carp Cyprinus Carpio ◽  
Carp Cyprinus Carpio ◽  
Final Weight

The present study aimed to investigate the effect of fish grading on the growth performance of common carp Cyprinus carpio cultivated in floating cages located in the Al-Mashab River northwest of Basrah. A total of 4896 fishes were transferred from storage cages to culture cages (3×4×2 m), and distributed at a rate of 816 fishes per cage with a culture density of 34 fishes/m3 into six cages, three of which were classified into large (GL), middle (GM) and small (GS) individuals, whereas three cages were left without grading (UG). The graded and ungraded cages were chosen depending on the standard deviation for each cage. The fishes were fed for both treatments on a standardized, locally made diet. The results of the study were evaluated according to the criteria for total weight gain (WG), daily growth rate and specific growth rate. In the first grading process, significant differences (P<0.05) were recorded between graded (GL) and ungraded in final weight and specific growth rate (SGR) but not in weight gain and daily growth rate (DGR), while in the second grading, significant differences (P<0.05) were recorded between graded (GL) and ungraded in final weight and weight gain but not in SGR and DGR. At the end of the second grading period, the daily and specific growth rate of graded fishes were ranged between 3.26-4.73 g/day and 0.22-0.46%/day, respectively, while for ungraded fishes there were 2.35 g/day and 0.23%/day, respectively. The survival rate (SR) was not different very much in all treatments and ranged between 94.34 to 95.49% in small graded and ungraded fishes, respectively. The study results recommend at least two grading processes should be established during the culture season in two or three months intervals.

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