Comparative analysis of growth performance, feed utilization, and antioxidant capacity of juvenile mud crab, Scylla paramamosain, reared at two different conditions

Crustaceana ◽  
2021 ◽  
Vol 94 (8) ◽  
pp. 1021-1033
Author(s):  
Cuiying Chen ◽  
Xiaofeng Nie ◽  
Yu Cheng ◽  
Jiajian Shen ◽  
Xianda He ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Growth Performance ◽  
Culture System ◽  
Glutathione Transferase ◽  
Feed Utilization ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Tank Culture ◽  
Feeding Experiments ◽  
Total Antioxidant

Abstract This study was carried out to analyse the growth performance, feed utilization, and antioxidant capacity of juvenile mud crab (Scylla paramamosain) reared in two conditions. Here, a new indoor polypropylene tank culture system and a traditional outdoor pond cage facility were used to perform feeding experiments on juvenile crabs. After eight weeks, the survival rate, weight gain, moulting rate and feed efficiency of crabs cultured in polypropylene tanks were markedly higher than those cultured in pond cages. Moreover, the activities of serum acid phosphatase (ACP) and alkaline phosphatase (ALP), and the antioxidant indices including glutathione peroxidase (GSH-PX), glutathione transferase (GST), superoxide dismutase (SOD) and total antioxidant capacity (T-AOC) in hepatopancreas were higher in crabs cultured in the polypropylene tank system than those in pond cages. Based on these results, compared with the traditional pond cages, the polypropylene tank culture system is more suitable for the short-term culture of mud crabs.

Growth, survival and intactness of green mud crab (Scylla Paramamosain) broodstock under different captive grow out protocols

2018 ◽  
Vol 16 (1) ◽  
pp. 169-180 ◽  
Author(s):  
M Latiful Islam ◽  
MNSM Siddiky ◽  
K Yahya
Keyword(s):  
Weight Gain ◽  
Culture System ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Fibre Glass ◽  
Tank Culture

Development of broodstock of the green mud crab (Scylla paramamosain) was assessed under three different captive growout protocols viz. in the open fibre glass tanks (T1), in plastic boxes (T2) floating on fibre glass tanks and in plastic drawer/compartment (T3) for a period of 5 months under the Centre for Marine and Coastal Studies (CEMACS), Universitiy Sains Malaysia (USM). The male (M) and female (F) mud crab were cultured separately to maintain virginity. Suitability of both the sexes were evaluated considering the weight gain (size), survival and intactness of limbs during harvesting. Result of the present study revealed that, irrespectives of growout protocols, growth of mud crab happened following the sigmoid pattern. A noticeable intersexual weight attainment was observed with significantlyhigher (p<0.05) weight gain for the males. Meanwhile, growth was influenced by the culture protocols for both the sexes with significant (p<0.05) weight gain in outdoor tanks (M= 319.75 g, F= 246.17 g) followed by outdoor floating boxes (M= 250.50 g, F= 198.70 g) and indoor compartment (M= 246.40 g, F= 178.50 g). Survival and the proportion of intact crabs under indoor compartment and outdoor floating boxeswere significantly higher (p<0.05) than out door tank culture system. The result of the present study suggested that, outdoor growout protocol could be followed for faster broodstock development purposes to reduce the dependence on natural broodstock for hatchery operations.SAARC J. Agri., 16(1): 169-180 (2018)

scholarly journals Modified photoperiods and light intensities for grow-out production of nile tilapia (O. niloticus) under indoor tank culture system

2018 ◽  
Vol 192 ◽  
pp. 03011
Author(s):  
Marvin Cinense ◽  
Ireneo Agulto ◽  
Armando Espino ◽  
Romeo Gavino ◽  
Emmanuel Sicat ◽  
...  
Keyword(s):  
Water Quality ◽  
Light Intensity ◽  
Growth Performance ◽  
Culture System ◽  
High Water ◽  
Control Treatment ◽  
Feed Conversion ◽  
Tank Culture ◽  
Light Intensities ◽  
Set Up

The study aimed to evaluate the effect of modified photoperiods and light intensities on grow-out production of tilapia under indoor tank culture system; specifically on water quality and on growth performance of tilapia. The study was conducted inside the greenhouse and considered two factors: photoperiod (24L:0D, 20L:4D and 16L:8D); and light intensity (40 watts m-2, 60 watts m-2 and 80 watts m-2); also, a control treatment was set-up outside the greenhouse to receive the normal environmental condition. Light manipulations inside the greenhouse were able to sustain the water quality within the desirable level for tilapia cultured in tank; while control tanks shows high water quality variation. Growth performance of tilapia cultured in tank responds positively in prolonged photoperiod at different light intensities. However, light manipulation gave insignificant difference on feed conversion ratio and survival rate compared to normal condition. Results indicated that 20-hours photoperiod and 40 watts m-2 light intensity is just enough to sustain the recommended water quality and better growth performance of the cultured tilapia in indoor tank system. It can be concluded that longer photoperiod and restrained light intensity can improved the growth performance of tilapia under indoor tank culture.

scholarly journals Effects of Manganese Hydroxychloride on Growth Performance, Antioxidant Capacity, Tibia Parameters and Manganese Deposition of Broilers

Animals ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3470
Author(s):  
Yongbo Sun ◽  
Shixia Geng ◽  
Tianyao Yuan ◽  
Ying Liu ◽  
Yuxin Zhang ◽  
...  
Keyword(s):  
Antioxidant Capacity ◽  
Growth Performance ◽  
Manganese Superoxide Dismutase ◽  
Dietary Supplementation ◽  
Production Performance ◽  
Manganese Superoxide ◽  
Density Index ◽  
Total Antioxidant ◽  
Manganese Deposition ◽  
Addition Level

This study was conducted to investigate the effects of dietary supplementation with manganese hydroxychloride (MHC) on production performance, antioxidant capacity, tibial quality, and manganese (Mn) deposition of broilers. A total of 756 one-day-old male Arbor Acres broilers were randomly allotted to 7 treatments of 6 replicates with 18 broilers per replicate. Broilers were fed corn-soybean meal basal diets supplemented of 100 mg/kg Mn as Mn sulfate (MnSO4), or 0, 20, 40, 60, 80, 100 mg/kg Mn as MHC for 42 days. The growth performance of broilers was not affected by dietary MnSO4 or MHC (p > 0.05), whereas the dressing percentage increased linearly (p < 0.05) with increasing of dietary MHC addition level. The activities of catalase (CAT) and manganese superoxide dismutase (MnSOD), and total antioxidant capability (T-AOC) in serum and liver on day 42 increased linearly (p < 0.05) with increasing of dietary MHC level, while malondialdehyde (MDA) concentration reduced linearly (p < 0.05). The length, strength, and density index of tibia increased linearly (p < 0.05) on day 21 as MHC supplementation level increased; there were no differences between MnSO4 group and 40–100 mg/kg Mn as MHC groups in tibial parameters of broilers (p > 0.05). As supplemental MHC levels increased, the Mn contents in heart, liver, kidney, and tibia increased linearly on day 42 (p < 0.05). In summary, dietary supplementation with MHC improved antioxidant capacity, bone quality, and Mn contents in broilers, but no effects on growth performance were detected. Based on the results of this study, dietary inclusion of 50–90 mg/kg Mn in the form of MHC to broilers is recommended.

scholarly journals ƯƠNG GIỐNG CUA BIỂN (Scylla paramamosain) VỚI CÁC LOẠI THỨC ĂN VÀ MẬT ĐỘ KHÁC NHAU

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Le Quoc Viet ◽  
Tran Ngoc Hai
Keyword(s):  
Survival Rate ◽  
Growth Performance ◽  
Stocking Density ◽  
Scylla Paramamosain ◽  
Mud Crab ◽  
Commercial Feed ◽  
Set Up

This study aims to determine the appropriate feed type and stocking density to improve the survival rate and growth performance of mud crab crablet during the nursery stage. The study consisted of 2 experiments as follows: (1) Rearing crablets with different feed types (including commercial feed, artemia biomass and acetes biomass) and (2) rearing crablets at different stocking densities (including 100; 200; 300 and 400 inds/m2). All treatments were randomly set up in triplicate. The initial sizes of crablet were 3.24 ± 0.54 mm in length, 4.54 ± 0.79 mm in width and 0.018 ± 0.004 g in weight. The result showed that using acetes biomass gave the best results compared to other treatments. The survival rate was 58.8% and biomass was 118 inds/m2. The second experiment showed that rearing crablets at 100 inds/m2 reached the highest survival rate (90.7%) and biomass (91 inds/m2).

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