scholarly journals STATUS OF FISH HATCHERY AND NURSERY MANAGEMENT IN, DHANUSHA, NEPAL

2021 ◽  
Vol 1 (1) ◽  
pp. 14-25
Author(s):  
Priti Chaudhary ◽  
Pankaj Kumar Yadav ◽  
Dilip Kumar Jha
Keyword(s):  
Severe Disease ◽  
Stocking Density ◽  
Water Shortage ◽  
Local Market ◽  
Brood Stock ◽  
Fish Hatchery ◽  
Black Carp ◽  
Skilled Manpower ◽  
Distant Market ◽  
Nursery Management

The study was conducted to overview status of fish hatchery and nursery management. The main occupation of owners is hatchery business and 23% owners run as side business. 23% of respondents reared fifteen species including major seven species Rupchand, Puntius, Basai, Bhagi, Bata, Magur and Black carp. 30.8% respondents use brood stock from other hatchery of different place for cross breeding to reduce stress, inbreeding depression and to increase disease resistance, growth, performance and production. 61.53% respondents do not monitor the pond to check water quality pararameters like DO, pH and turbidity of water. The average hatchlings, fish fry and fingerling survivality was found 31.10%, 57% and 64% respectively. The problem encountered were flood, predator, unavailability of feed, hormone, fertilizer, skilled manpower and water shortage. The B/C ratio in private hatchery was 1.59 and 1.31 in government hatchery. Most of the respondents use motorcycle (53.8%) as means of transportation of fish seed. The main severe disease was learnaea followed by argulus. The inputs used in nursery management were less than that of recommended dose. High stocking density of fingerlings found (546.15kg/kattha). 69.23% of respondents sold fish, fry and fingerlings to distant market and 30.8% of fish farmers sold their fish seed products in local market. About 75%, 20% and 5% of hatchery fish seed production transferred through channel 1, channel 2 and channel 3 respectively. The problems faced in market were trader monopoly followed by open boarder, road inaccessibility, transportation loss and lack of market information

scholarly journals Case report: whole genome sequencing based investigation of maternal-neonatal listeriosis in Sichuan, China

2019 ◽  
Vol 19 (1) ◽  
Author(s):  
Lijuan Luo ◽  
Xi Chen ◽  
Michael Payne ◽  
Xiaolong Cao ◽  
Yan Wang ◽  
...  
Keyword(s):  
High Resolution ◽  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Caesarean Delivery ◽  
Severe Disease ◽  
Metal Resistance ◽  
Meat Sample ◽  
Local Market ◽  
Whole Genome ◽  
Food Isolate

Abstract Background Neonatal listeriosis is a rare but severe disease manifesting as septicemia and central nervous system (CNS) infections with a high fatality rate of around 20 to 30%. Whole genome sequencing (WGS) is a promising technique for pathogen identification and infection source tracing with its high resolution. Case presentation A case of neonatal sepsis with listeriosis was reported with positive blood culture for Listeria monocytogenes. The case was investigated to confirm the vertical transmission of the infection and identify the potential food source of the maternal L. monocytogenes infection using WGS. L. monocytogenes was isolated from the neonate’s blood sample the day after caesarean delivery and from the mother’s genital and pudenda swab samples 5 days and 13 days after caesarean delivery. WGS showed that the isolate from the neonate was identical to the genome type of the isolates from the mother, with only one of the 4 isolates from the mother differing by one single nucleotide polymorphism (SNP). By WGS, one L. monocytogenes isolate from a ready-to-eat (RTE) meat sample in the patients’ community market shared the same sequence type but was ruled out as the cause of infection, with 57 SNP differences to the strain causing the maternal-neonatal infection. The food isolate also carried a novel plasmid pLM1686 that harbored heavy metal resistance genes. After caesarean section, the mother was treated with a third generation cephalosporin which L. monocytogenes is naturally resistant to, which may explain why genital and pudenda swabs were still culture-positive for L. monocytogenes 13 days after delivery. Conclusions Genital swab culture for L. monocytogenes had been informative in the diagnosis of maternal listeriosis in this case. The high resolution of WGS confirmed the maternal-neonatal transmission of L. monocytogenes infection and ruled out the L. monocytogenes contaminated RTE meat from the local market as the direct source of the mother’s infection.

scholarly journals Evaluation of larvae production and growth of juvenile red tilapia NIFI F1 during the nursery phase

2019 ◽  
Vol 18 (3) ◽  
pp. 251
Author(s):  
Adam Robisalmi ◽  
Priadi Setyawan ◽  
Bambang Gunadi
Keyword(s):  
Growth Rate ◽  
Survival Rate ◽  
Specific Growth Rate ◽  
Seed Production ◽  
Specific Growth ◽  
Stocking Density ◽  
Brood Stock ◽  
Female Ratio ◽  
Red Tilapia ◽  
Ad Libitum

Genetic quality improvement can be done through breeding programs. The indicator of success in the selection is the improvement of the character of production. Larval production and growth of NIFI of F1generation red tilapia seeds in the selection and its control parents were evaluated in this study. The research was conducted at the Fish Breeding Research Center for four months. Spawning was carried out on freshwater ponds of cage with size of  1 x 1 m. Tilapia brood stock were stocked with male to female ratio of 1: 1. The larvae rearing were conducted in the cage with size 2x2x1 m3 and stocking density 125 m-2. Pellets with a protein content of 38-40% are given to ad libitum larvae three times a day for first month, and then feeding rate was given 15-20% daily from biomass. Seed production, growth, specific growth rate, and survival rate were observed. The results of the experiment show a difference between fish selected and control. Seed production of selection reached 540 ± 114 and controls   508 ± 142. The growth performance of selected red tilapia juvenile showed higher compared with the control. The mean length  of  selected population  reached 6.33 ± 0.43 cm , weight gain 6.60 ± 0.52 g, specific growth rate 7.33 ± 0% g days-1 and survival rate  81.50 ± 4.46% were respectively and the control population  5.76 ± 0.52 cm ; 4,90 ± 0.58 g; 4.50 ± 0.35% g days-1; and 74.85 ± 3.26%. These values indicate that the growth of red tilapia juvenile NIFI F1 generation was increased 25.76%.AbstrakSalah satu upaya yang dapat dilakukan untuk meningkatkan kualitas genetik yaitu melalui program pemuliaan. Per-baikan karakter reproduksi dan pertumbuhan dapat digunakan sebagai indikator keberhasilan seleksi. Penelitian ini bertujuan untuk mengevaluasi produksi larva dan pertumbuhan benih ikan nila merah NIFI F1 dari induk seleksi dan kontrol. Kegiatan dilaksanakan selama empat bulan di Balai Riset Pemuliaan Ikan. Pemijahan dilakukan di kolam air tawar pada hapa 1 m x1 m.  Perbandingan induk ikan nila jantan dan betina 1:1. Larva yang sudah dipanen dimasukkan pada hapa pendederan ukuran 2x2x1 m3 dengan padat tebar 125 ekor m-2 . Selama pendederan , larva diberi pakan (protein 38-42%) secara ad libitum tiga kali sehari pada bulan pertama dan selanjutnya diberi pakan dua kali sehari 15-20% dari biomassa. Pakan yang diberikan selama pendederan mempunyai protein berkisar 38-42%. Parameter yang diamati meliputi produksi larva, pertumbuhan, laju pertumbuhan spesifik, dan sintasan. Hasil penelitian menunjukkan produksi larva ikan nila merah seleksi yaitu 540±114 ekor dan kontrol 508±142 ekor. Performa pertumbuhan benih ikan nila merah seleksi menunjukkan hasil yang lebih tinggi dibanding kontrol dengan nilai pertumbuhan panjang 6,33 ±0,43cm, pertumbuhan bobot 6,60±0,52 g, laju pertumbuhan spesifik 7,33±0% g hari-1 serta sintasan 81,50±4,46%, se-dangkan populasi kontrol masing-masing 5,76±0,52 cm; 4,90±0,58 g; 4,50±0,35% g hari-1; dan 74,85±3,26%. Nilai ini menunjukkan bahwa ada peningkatan pertumbuhan sebesar 25,76% pada benih ikan nila merah NIFI F1.

scholarly journals Socio Economics Profile of Chilli Growers in District Baramulla (J&K)

2020 ◽  
pp. 135-141
Author(s):  
Quadri Javeed Ahmad Peer ◽  
Tariq Aziz ◽  
Irfath Rashid ◽  
Sushil Kumar ◽  
Sheema Khan
Keyword(s):  
Production Technology ◽  
Resource Constraints ◽  
Economic Status ◽  
Local Market ◽  
Vegetable Production ◽  
Sowing Time ◽  
Medium Level ◽  
Distant Market ◽  
Land Holdings ◽  
The Village

The study was carried out during 2018-2019 to know the socio-economic status of the chilli growers, marketing of chilli and constraints faced by the chilli growers in district Baramulla. A sample size of 50 chilli growers was selected randomly from 5 villages of agricultural zone Nehalpora of district Baramulla. The study reveals that majority (60%) of the respondents were in the age group (35-53 yrs). It was found that 30 per cent of the respondents were illiterate. About 45% of the respondents were having farming as the main occupation. As far as annual income is concerned, major source of income of the growers was from agriculture (72 lakhs), followed by horticulture (39.70 lakhs) and vegetables (3.23 lakhs). About 45% of the area was irrigated in the village, 40.87% under orchards, 9.48% under chilli. Majority of the growers used television (74%) regularly as a source of mass media followed by other means of media like internet (30%). Majority (84%) of the growers had occasional extension contacts. About 56 per cent of the respondents were having medium level of scientific orientation followed by low (30%) and high (14%).  As far as the marketing of the chilli is concerned, majority of the growers (56%) sold their crop in local market while only (44%) of the growers sold their crop at a distant market. The reason might be that the growers preferred their local market rather than going for distant places because of the less time available. The major resource constraints in chilli production technology as mentioned by the respondents were unavailability of improved seeds of vegetables (90%) high cost of pesticides (70%), scattered and small size land holdings (60%) and lack of irrigation facilities (40%) Poor marketing facilities (80%), distantly located markets (30%), bad condition of roads (90%), non-remunerative prices (84%) and lack of transportation facilities and high transportation charges (18%) were the major marketing constraints. 90 per cent of the farmers had a constraint of Lack of training on scientific vegetable production technology and Non-availability of facilities of soil testing (80% ), while as 40 per cent had mentioned Lack of knowledge about improved varieties, seed rate and sowing time as other constraint faced.

scholarly journals Production results of various categories of pheasants reared under controlled conditions

2011 ◽  
Vol 27 (4) ◽  
pp. 1819-1826
Author(s):  
Z. Popovic ◽  
N. Djordjevic ◽  
M. Beukovic ◽  
D. Beukovic ◽  
M. Djordjevic
Keyword(s):  
Body Mass ◽  
Stocking Density ◽  
Conversion Ratio ◽  
Feed Conversion Ratio ◽  
Feed Conversion ◽  
Brood Stock ◽  
Feeding Technique ◽  
Concentrate Mixture ◽  
Second Period

The overview of domestic and foreign investigations of the effects of various intensity of ant feeding technique in various categories of pheasants. With the aim to increase number of pheasants in our country and in the world, for decades pheasant chicks are produced in pheasant farms up to the age of 5-8 weeks, and body mass of 400-450 g, after which they are released into the hunting grounds. The capacity of pheasant farms in Serbia is about 900.500 hatched chicks, and in the past four decades several tens of millions of artificially reared pheasants were released. The quality of feeding the brood stock of pheasants, which produce eggs for hatching incubator has a direct influence on number, mass and fertility of eggs, and on the mass of newly hatched chicks. The feed conversion ratio in chicks depends on the first place on energy and protein level, and also on biological value of protein. In domestic investigations of pheasant chicks feeding with the concentrate mixture with higher protein value (30% to 28 days of age and 24% to 42 days of age) and with lower stocking density (450 individuals in the group), had significantly bigger Final body mass (457.07 g) and higher daily gain (4.22 g in the first 13:31 and g in the second period), and with better feed conversion ratio.

scholarly journals Residual analysis of selected pesticides in cucumber and spinach collected from local markets of Mymensingh sadar

2015 ◽  
Vol 26 (1) ◽  
pp. 38-44 ◽  
Author(s):  
MA Islam ◽  
MZ Islam ◽  
MK Hossain
Keyword(s):  
Gas Chromatography ◽  
Research Work ◽  
The Other ◽  
Local Market ◽  
Chemical Contamination ◽  
Vegetable Sample ◽  
Skilled Manpower ◽  
Analytical Laboratories ◽  
Modern Analytical ◽  
Detection And Quantification

To explore the chemical contamination of vegetables available in local market of Mymensingh this research work undertaken for detection and quantification of the presence of pesticides. Standard pesticides and GC (Gas Chromatography) were used to confirm their retention times and area of eluted peaks. By comparing the retention times of standards and samples, confirmation of residual presence of pesticides were studied. A result revealed that residue of a fungicide (Common Name: Mancozeb, a.i: Symoxanil 72 wp) was found in one Cucumber sample out of three where 50 ppm quantified. On the other hand, out of 3 spinach samples, 1 of them showed presence of a insecticide (Common name: imidachloropid; a.i.: imidachloropid 20 SL) residues, which quantified as 35 ppm. Residual quantity determined in cucumber sample of BAUSesh More and spinach sample of Kewatkhali market, Mymensingh. To clarify the existing scenario in respect of all pesticide residues in vegetable sample, it would be necessary to develop all facilities for a modern analytical laboratories and skilled manpower. It may be useful for creating awareness about the available vegetables in consumers and farmers community.Progressive Agriculture 26:38-44, 2015

scholarly journals Effect of stocking density of fingerlings production of Black carp Mylopharyngodon piceus (J. Richardson, 1846) in pond condition

2017 ◽  
Vol 4 (1) ◽  
pp. 37-44
Author(s):  
Md Abdus Samad ◽  
Mst Lutfunnahar ◽  
Sujit Kumar Chatterjee ◽  
Md Ashrafuzzaman ◽  
Md Selim Reza
Keyword(s):  
Average Length ◽  
Stocking Density ◽  
Cost Benefit ◽  
Black Carp ◽  
Net Profit ◽  
Final Weight ◽  
Cost Benefit Ratio ◽  
Mylopharyngodon Piceus ◽  
Formulated Feed ◽  
Experimental Ponds

An experiment was conducted in pond condition under three treatments for a period of 60 days each with three replications to know the effect of stocking density on growth performance of fingerlings production of Black carp Mylopharyngodon piceus. Stocking density were used at the rate of 240 (T1), 270 (T2) and 300 (T3) fingerlings/decimal, respectively. Initial average length and weight of M. piceus fry were 3±0.02 cm and 1.5±0.01g during stocking in the experimental ponds. The fish were initially fed with 25% protein content formulated feed at 8% of body weight and the rate was reduced to 6% gradually. The water quality variabilities were more or less similar in three treatments within the suitable ranges for aquaculture. The SGR value 3.57±0.006 was recorded in treatment T1 while the lowest value was 3.20±0.009 in T3. Survival rate (%) were significantly higher in T1 (91.33±0.88) where the stocking density was low compared to those in T2 (79.83±0.44) and T3 (77.17±0.6), respectively. The net profit in treatment T1 was (Tk. 475428.58±3.25) and lowest in T3 (Tk. /ha 190138.5±6.15). The highest final weight gain, SGR%, production, net profit and cost benefit ratio were found in treatment T1. In the present study production of M. piceus was found to be highest in lower stocking density. Therefore, it is evident that feeding with higher protein supplement with lower stocking density is effective for optimum growth of M. piceus.Res. Agric., Livest. Fish.4(1): 37-44, April 2017

scholarly journals KẾT QUẢ CỦA MÔ HÌNH NUÔI GHÉP CÁ VƯỢC (Lates calcarifer) VỚI CÁ TRẮM ĐEN (Mylopharyngodon piceus) TRONG AO ĐẤT TẠI XÃ LẬP LỄ, HUYỆN THỦY NGUYÊN, THÀNH PHỐ HẢI PHÒNG

2020 ◽  
Vol 4 (2) ◽  
pp. 1951-1959
Author(s):  
Kim Văn Vạn ◽  
Trần Ánh Tuyết ◽  
Nguyễn Thị Diệu Phương
Keyword(s):  
Growth Rate ◽  
Body Weight ◽  
Survival Rate ◽  
Economic Efficiency ◽  
Stocking Density ◽  
Sea Bass ◽  
Total Body Weight ◽  
Average Growth ◽  
Black Carp ◽  
Total Body

Mô hình nuôi ghép cá Vược với cá Trắm đen được thực hiện từ tháng 3 năm 2018 đến tháng 2 năm 2019 tại 3 hộ gia đình ở xã Lập Lễ, huyện Thủy Nguyên, thành phố Hải Phòng. Mục tiêu của nghiên cứu nhằm xác định tốc độ tăng trưởng và tỷ lệ sống của cá Vược và cá Trắm đen, từ đó đánh giá hiệu quả kinh tế của mô hình. Cá được thả với mật độ 1,2 con/m2, tỷ lệ thả của cá Vược: cá Trắm đen là 4,6:1 với kích cỡ cá thả của cá Vược và cá Trắm đen tương ứng là 1,10 ± 0,12 kg/con và 1,57±0,18 kg/con. Thức ăn sử dụng cho cá Vược là cá tạp với lượng thức ăn bằng 3-5% tổng khối lượng cá, thức ăn công nghiệp (35% protein thô) được sử dụng cho cá Trắm đen với khối lượng bằng 2-3% tổng khối lượng cá. Kết quả cho thấy tốc độ tăng trưởng trung bình, tỷ lệ sống và FCR của cá Vược tương ứng là 6,15g/con/ngày, 93% và 7,2; của cá Trắm đen là 8,17g/con/ngày, 95% và 2,92. Chi phí cho thức ăn là chi phí lớn nhất, chiếm 54,02% tổng chi phí; thuốc và chế phẩm vi sinh chiếm một phần không đáng kể (2,68%) trong tổng chi. Hiệu quả kinh tế của các mô hình đạt hơn 886 triệu đồng/ha/năm. ABSTRACT The polyculture model of sea bass and back carp in earthen pond was conducted in 03 households in Lap Le commune, Thuy Nguyen district, Hai Phong city from March 2018 to February 2019. The objective of the study is to determine the growth rate and survival rate of sea bass and black carp, thereby evaluating the economic efficiency of the model. The stocking density was 1.2 fish.m-2 with the ratio of sea bass:black carp was 4,6:1. Initial body weight of sea bass was 1.10 ± 0.12 kg.fish-1 and black carp was 1,57 ± 0,18 kg.fish-1. Feed used for sea bass and black carp was trash fish and industrial feed (35% crude protein), respectively. Feeding level was 3-5% and 2-3% of total body weight for sea bass and black carp, respectively. The results showed that average growth rate, survival rate and FCR of sea bass and black carp were 6,15g.fish-1.day-1, 93%, 7,2 and 8,17g.fish-1.day-1, 95%, 2,92, respectively. Expense for feed was the largest cost, accounting for 54,02% of the total; especially the cost of medicine and probiotics was an inconsiderable part in these models (2,68%). Economic efficiency of the models gained more than 886 million VND.ha-1.year-1

scholarly journals Use of hulless oats in feeding of pedigree 1+ carp as an effective method for ensuringthe physiological needs of fish

2021 ◽  
pp. 87-100
Author(s):  
N. Syrovatka ◽  
◽  
I. Hrytsyniak ◽  
D. Syrovatka ◽  
◽  
...  
Keyword(s):  
Stocking Density ◽  
Feed Additives ◽  
The Body ◽  
Research Station ◽  
Feed Mixture ◽  
Brood Stock ◽  
Growing Period ◽  
Experimental Fish ◽  
Fish Productivity ◽  
Experimental Group

Purpose. To study the effect of addition of hulless oats during the growing period on the qualitative and quantitative indicators of replacement-brood stock of carp. Methodology. The replacement-brood stock of Lubin intra-breed type of Ukrainian scaly carp strain, which were kept in ponds of State Enterprise Experimental Fish Farm of Lviv Research Station of the Institute of Fisheries of the National Academy of Agrarian Sciences of Ukraine (IFNAASU) was used for the study. The stocking density was 1000 fish/ha. The experiment was based on four experimental groups. Carps of the first experimental group were fed during the entire growing period with a feed mixture with the addition of hulles oats in the amount of 10 %, while carps of the second group were fed with a feed with the addition of 30 % of hulless oats. The third experimental group received a feed mixture in June – July, and hulless oats in August. The control group of carp was fed with the feed mixture throughout the entire growing period. The stocking density of fish was 1000 fish/ha. Piscicultural studies were conducted in accordance with current methods. Sampling of water for chemical analysis and its processing in the laboratory was carried out according to O. Alokin according to the Standard of the Ministry of Agrarian Policy of Ukraine. Haemoglobin content was determined by the haemoglobin-cyanide method. Blood erythrocytes were counted in a Goryaev chamber. Abundance and weight of natural feeds in ponds were determined according to I.A. Kyseliov, V.I. Zhadin. Zooplankton biomass was determined using tables of individual weights of F.D. Mordukhai-Boltovskoi. Analytical processing of the material was performed using MS Excel. The criteria for the analysis of indicators were their mean (M) and mean deviation (m). Findings. Peculiarities of growth, development of carp and efficiency of feed usage with the addition of hulless oats on the background of similar satisfactory growing conditions were studied. It was found that additional feeding of carp with hulless oats at an amount of 30% was effective. In particular, its addition resulted in an increase in individual weight by 31.1% and survival rate by 2.33%. Studies of the physiological functions of the body of experimental fish during the growing period after adding the hulless oats into the main diet provided an opportunity to recommend its use in the feeding process of age–1+carp in order to increase fish productivity. Originality. The advisability of using hulless oats in the feeding of replacement-brood stock of juvenile carp was studied in Ukraine for the first time. The analysis of productive, physiological and economic indicators has been carried out. Practical value. The results of a comprehensive assessment of piscicultura; and biological parameters provide recommendations for the use of hulless oats in the feeding of replacement-brood stock of juvenile carp. Key words: carp, replacement-brood juvenile stock, feed, feed additives, normalized feeding, physiological needs, fish productivity, feed costs, natural food supply.

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