Preparation and evaluation of diets containing fish silage, cooked fish preserved with formic acid and low-temperature-dried fish meal as protein sources for mirror carp (Cyprinus carpio)

Semi-intensive common carp (Cyprinus carpio) farm technology uses several feed types affecting the growth performance; however, we know less about their long-term effects on water quality. Herein, we evaluated the effects of three commonly used feeds—moderate levels of fish meal and fish oil feed (FF), plant meal and plant oil feed (PF), and cereal feed (CF) on the nutrient (total nitrogen (TN), total phosphorus (TP) and organic matter (OM)) content of the pond water. The experiment was carried out over three consecutive years from juveniles to market-sized fish. The type of feed affected the net yields, but generally, it did not affect the water quality. The year of sampling, however, was a significant factor affecting TN, TP, and OM, whose concentrations decreased during the three years. Our findings highlight that the age of the stocked fish on water quality has a more pronounced effect than the nutrient profile of the supplementary feed. Additionally, the plant-based feed could provide comparable net yields as the fish meal-based feed without additional nutrient loading in the water column, reinforcing the sustainability of alternative feeds in semi-intensive carp farming.

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Evaluation of yeast hydrolysate as a substitute to dietary fish meal of| juvenile Jian carp ( Cyprinus carpio var. Jian): Protein synthesis via TOR pathway

Aquaculture Nutrition ◽

10.1111/anu.13322 ◽

2021 ◽

Author(s):

Xiangyang Yuan ◽

Canli Wang ◽

Wenbin Liu ◽

Guangzhen Jiang ◽

Yongjun Dai

Keyword(s):

Protein Synthesis ◽

Cyprinus Carpio ◽

Fish Meal ◽

Tor Pathway ◽

Yeast Hydrolysate ◽

Carp Cyprinus Carpio ◽

Dietary Fish ◽

Jian Carp

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Viability of Najawa carp (Cyprinus carpio L.) sperm at 4°C temperature storage

E3S Web of Conferences ◽

10.1051/e3sconf/202014701015 ◽

2020 ◽

Vol 147 ◽

pp. 01015

Author(s):

Dimas Fendy Pradana ◽

Ignatius Hardaningsih ◽

Dini Wahyu Kartika Sari

Keyword(s):

Low Temperature ◽

Cyprinus Carpio ◽

Sperm Viability ◽

Low Temperature Storage ◽

Progressive Motility ◽

C Storage ◽

Randomized Design ◽

Significant Difference ◽

Carp Cyprinus Carpio ◽

Temperature Storage

The objectives of this study were to evaluate the sperm viability of Najawa carp (Cyprinus carpio L.) in cryopreservation pre-conditions at 4°C. The design used in this study was Complete Randomized Design with 4 treatments, BSS as a control, 10% DMSO, 0,2 M Sucrose, and 5% DMSO + 0,1 M Sucrose; each consist of three replications. The parameters observed were progressive motility of fresh sperm, diluted sperm before low temperature storage, and 2 hours; 3 hours; 4 hours; 5 hours; one day; one week; a month after 4°C storage. The data were analyzed by ANOVA. The data showed that there was no significant difference between treatment (P>0.05). The best viability was 40.56% of sperm motility which survive for one week, it was achieved by 5% DMSO + 0,1 M Sucrose.

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