scholarly journals Evaluation of Biofloc Technology for Astacus leptodactylus: Effect of Different Stocking Densities on Production Performance and Physiological Responses

2021 ◽  
Vol 17 (4) ◽  
pp. 568-578
Author(s):  
Doğukan KAYA ◽  
Ercüment GENÇ ◽  
Derya GÜROY ◽  
Serhat DİNÇER ◽  
Bilgenur HARMANŞA YILMAZ ◽  
...  
Keyword(s):  
Physiological Responses ◽  
Production Performance ◽  
Astacus Leptodactylus ◽  
Biofloc Technology

scholarly journals Production Performance of Catfish (Clarias gariepinus Burchell, 1822) Cultured With Added Probiotic Bacillus sp. on Biofloc Technology

2020 ◽  
Vol 9 (3) ◽  
pp. 274
Author(s):  
Rifqah Pratiwi ◽  
Kurniawan Wahyu Hidayat ◽  
Sumitro Sumitro
Keyword(s):  
Specific Growth ◽  
Heterotrophic Bacteria ◽  
Clarias Gariepinus ◽  
Bodyweight Gain ◽  
Production Performance ◽  
Average Weight ◽  
Bacillus Sp ◽  
Fish Waste ◽  
Biofloc Technology ◽  
Supplementary Feed

Biofloc technology (BFT) is one of the most developed aquaculture technologies, which aims to improve the efficiency of feed use by providing nutrients for flocs to be used by fish as a supplementary feed. Also, BFT serves to improve water quality through the breaking down of fish waste materials assisted by heterotrophic bacteria. Bacteria used in this study were Bacillus sp. as probiotics in BFT. This study aimed to examine the production performance of catfish maintained with a biofloc system on an industrial scale, without experimental design. The average weight of catfish when stocking was 5.9 ± 0.0 g/fish with a density of 7000 fish in 9 unit circular ponds. This studies showed after 78 days of culture, bodyweight gain about 28.6 g/fish to 41.7 g/fish, highest specific growth rate was K2 (2.4 ± 0.2% BW/day), the highest survival rate K2 (98.87 ± 6.64% BW/day), highest grow rate K1 (41.7 ± 5.8 g) and the best FCR K9 (0.95 ± 0.11).

scholarly journals Nitrogen Fertilization and Liming Improves Growth, Production, Gas Exchange and Post-Harvest Quality of Yellow Flower Jambu

2020 ◽  
Vol 8 (3) ◽  
pp. 756
Author(s):  
Vivian Christine Nascimento Costa ◽  
Mário Lopes da Silva Júnior ◽  
Italo Marlone Gomes Sampaio ◽  
Ricardo Falesi Palha de Moraes Bittencourt ◽  
Stefany Priscila Reis Figueiredo ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Nitrogen Fertilization ◽  
Physiological Responses ◽  
Biomass Accumulation ◽  
Titratable Acidity ◽  
Production Performance ◽  
Soluble Solids ◽  
Post Harvest ◽  
Growth Production

Jambu is a vegetable, widely consumed in the Brazilian North Region, both in typical foods and medicinal herb. Despite its versatility, there are uncountable challenges in relation to its cultivation, especially with regard to the availability of information on nutritional management, such as the lack of data on the effect of liming associated with the supply of nitrogen (N) on the production performance of the crop. Thus, the effect of nitrogen fertilization and liming on growth, production, physiological responses and post-harvest quality of the yellow-flowered variety jambu was evaluated. The experimental design was randomized in factorial blocks (6 x 2), with five repetitions. The treatments consisted in the combination of six doses of N (0; 60; 90; 120; 150 and 180 kg ha-1) with and without liming application (0 and 70% V). The variables of growth, production, gas exchange and post-harvest quality of jambu were evaluated. Standardly, there was interaction between N-dose and liming factors for most of the analyzed variables, except for titratable acidity and total soluble solids and titratable acidity ratio. In general, the increasing of N doses combined with liming positively affected growth, production, physiological responses and post-harvest quality, and it was observed that in the 170 kg ha-1 dose of N higher response was obtained in the biomass accumulation of the aerial part and in the 180 kg ha-1 dose of N maximum production of inflorescences. Therefore, the use of correctives associated with nitrogen fertilization is recommended to obtain more significant production and quality of jambu.

scholarly journals Production Performance and Physiological Responses of Angora Goat Kids Fed Acidified Milk Replacer

1992 ◽  
Vol 75 (6) ◽  
pp. 1643-1650 ◽  
Author(s):  
T. Sahlu ◽  
H. Carneiro ◽  
H.M. El Shaer ◽  
J.M. Fernandez
Keyword(s):  
Physiological Responses ◽  
Production Performance ◽  
Milk Replacer ◽  
Angora Goat

scholarly journals TOTAL HEMOCYTES, GLUCOSE HEMOLYMPH, AND PRODUCTION PERFORMANCE OF SPINY LOBSTER Panulirus homarus CULTURED IN THE INDIVIDUAL COMPARTMENTS SYSTEM

2016 ◽  
Vol 8 (1) ◽  
Author(s):  
Rifqah Pratiwi ◽  
Eddy Supriyono ◽  
. Widanarni
Keyword(s):  
High Mortality ◽  
Stress Level ◽  
Physiological Responses ◽  
Spiny Lobster ◽  
Production Performance ◽  
Optimal Production ◽  
Total Length ◽  
The Individual

<p><em>Cannibalism can cause high mortality in a lobster culture. To prevent cannibalism, an artificial shel-ter is needed like the individual compartments system (ICS) to</em><em> ensure that there is no contact bet-ween lobsters.</em><em> This study aimed to evaluate the application of ICS on total hemocytes glucose hemo-lymph, production performance, and determine the shape of more effective ICS to minimize stress level of lobster. The treatments used for various application shape of ICS was tubular ICS, triangle ICS, square ICS, and shelter PVC pipes as control. Lobster maintenance was conducted in outdoor for 60 days. The results indicated that physiological responses with square ICS treatment were more effective to reduce stress level compared with other treatments (p&lt;0.05). Application of ICS was more optimal to improved SR (p&lt;0.05) and growth of lobster (p&gt;0.05). Overall, treatment of square ICS was opti-mal related to production performance i.e. SR 88.89±5.24%, SGR 0.61±0.49%/day, with harvest size of total length 137.31±8.11 mm/ind, weight 58.83±4.78 g/ind, and FCR 22.71±1.72. Application of ICS in lobster culture was effective to reduce stress level as indicated from total hemocytes and gluco-se hemolymph, and support optimal production performance. Lobster culture using a square ICS sha-pe was effective to minimize stress level, compared with tubular ICS and triangle ICS.</em></p><p><strong><em></em></strong><strong><em>Keywords:</em></strong><em>   cannibalism, glucose, hemocytes, individual compartments system, lobster, production</em></p>

scholarly journals EVALUATION OF THE USE OF MALANG SAND AS A FILTER MATERIAL ON WATER QUALITY, PHYSIOLOGICAL RESPONSES AND PRODUCTION PERFORMANCE OF MUD CRAB Scylla serrata

2020 ◽  
Vol 12 (3) ◽  
pp. 833-848
Author(s):  
Yuni Puji Hastuti ◽  
Arul Tabah Prastomo ◽  
Ridwan Affandi ◽  
Wildan Nurussalam ◽  
Dudi Muhammad Wildan ◽  
...  
Keyword(s):  
Water Quality ◽  
Growth Rate ◽  
Physiological Responses ◽  
Production Performance ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Feed Conversion ◽  
Absolute Growth Rate ◽  
Absolute Growth ◽  
Mud Crabs

Mud crab Scylla serrata is one of crustacean commodities with high economic value. One of the unsolved obstacles in mud crabs cultivation is crabs’ stress level caused by the declining water quality. The recirculating system is a method for maintaining water quality throughout the rearing period of culture crab. This system can use a variety of physical filter materials, such as zeolite, sand, and other materials. This study aimed to determine the amount of malang sand as a physical filter which positively affect the physiological responses and production performance of mud crabs. This research was carried out using a recirculating system with a completely randomized design conducted in five treatments with three replicates, i.e., malang sand with a weight of 0 kg (control), 5 kg, 10 kg, 15 kg, and 20 kg. The results proved that the best physiological response and production performance of mud crab was observed at malang sand treatment with a weight of 5 kg. This treatment showed specific growth rate, absolute growth rate for body weight, absolute growth rate for body length, and the survival rate of mud crabs with the highest value of 0.18±0.061%, 0.13±0.05 g/day, 0.0016±0.00006 cm/day, and 77.77%, respectively, yet it had the lowest feed conversion ratio of 3.76±004. In addition, the 5 kg treatment had water quality parameters in the tolerable ranges for mud crabs’ growth.

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