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Rahimnejad S, Leclercq E, Malinovskyi O, Pěnka T, Kolářová J, Policar T. Effects of yeast hydrolysate supplementation in low-fish meal diets for pikeperch. Animal 2023; 17:100870. [PMID: 37379608 DOI: 10.1016/j.animal.2023.100870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 05/19/2023] [Accepted: 05/26/2023] [Indexed: 06/30/2023] Open
Abstract
Plant proteins have been increasingly used as sustainable substitutes for fish meal (FM) in aquafeeds; however, their high inclusion level compromises fish performance. The objective of this study was to examine whether yeast hydrolysate (YH) supplementation can improve the utilisation of high soybean meal (SM) diet and ameliorate its potential deteriorating impacts in pikeperch (Sander lucioperca). A basal diet was formulated using 44% FM, and four additional diets were produced by replacing 30 or 60% of FM with SM with or without the addition of 2% YH (FM, SM30, SM60, SM30 + YH, and SM60 + YH diets). Each diet was fed to three groups of fish (35.3 ± 0.10 g, 150 fish per group) to visual satiety four times daily for 70 days. Fish growth was not impacted by FM replacement level or YH application. However, SM60 group exhibited markedly higher feed conversion ratio and lower survival rate than those fed the FM- and YH-supplemented diets (P < 0.05). The highest and the lowest protein efficiency ratio values were obtained for the SM30 + YH and SM60 groups, respectively. Whole-body lipid content decreased in SM60 and SM60 + YH groups, and muscle lipid decreased in all the replacement groups. Serum triglyceride and glucose concentrations tended to decrease as FM replacement level increased. The highest alanine aminotransferase, aspartate aminotransferase (AST) and lactate dehydrogenase (LDH) activities were detected in the SM60 group, and YH addition significantly decreased the AST and LDH activities. Serum lysozyme activity decreased in SM30, SM60 and SM60 + YH groups. Serum myeloperoxidase and antiprotease activities decreased in SM60 group, and YH supplementation improved their activities. No effects of diets were observed on serum antioxidant parameters such as catalase activity and malondialdehyde concentration, and gut morphological indices. Number of goblet cells in midgut decreased by increasing the SM inclusion level and a slight improvement was observed by YH application. These findings suggest that YH supplementation has the potential to support the replacement of up to 60% FM with defatted SM in pikeperch feed without deteriorating growth, feed utilisation, and survival rate. Further, YH incorporation mitigated the damaging impacts of high SM diet on liver function and non-specific immune response.
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Affiliation(s)
- S Rahimnejad
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Zátiší 728, Vodňany 389 25, Czech Republic; Fish Innate Immune System Group, Department of Cell Biology and Histology, Faculty of Biology, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, 30100 Murcia, Spain.
| | - E Leclercq
- Lallemand SAS, 19 rue des Briquettiers, 31702 Blagnac Cedex, France
| | - O Malinovskyi
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Zátiší 728, Vodňany 389 25, Czech Republic
| | - T Pěnka
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Zátiší 728, Vodňany 389 25, Czech Republic
| | - J Kolářová
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Zátiší 728, Vodňany 389 25, Czech Republic
| | - T Policar
- Faculty of Fisheries and Protection of Waters, University of South Bohemia in České Budějovice, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodňany, Zátiší 728, Vodňany 389 25, Czech Republic
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Kristan J, Dadras H, Policar T. Optimization of short-term storage of pikeperch semen: an applicable approach. Animal 2020; 15:100001. [PMID: 33515997 DOI: 10.1016/j.animal.2020.100001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 11/18/2022] Open
Abstract
Contamination of semen with urine and asynchronous maturation of males and females are main obstacles in artificial reproduction of pikeperch Sander lucioperca. The objective of this study was to overcome these obstacles using optimization of a procedure for short-term storage of pikeperch semen at 4°C using two immobilizing media (IM): (a) IM1, 180mM NaCl, 2.68mM KCl, 1.36mM CaCl2⋅2H2O and 2.38mM NaHCO3, 343mOsm/kg; and (b) IM2, 200mM NaCl, 2.68mM KCl, 1.36mM CaCl2⋅2H2O and 2.38mM NaHCO3, 381mOsm/kg. Undiluted sperm was used as the control. At 6h poststorage, there were no substantial changes in spermatozoa motility and velocity at 30s postactivation in all groups. Over 48h of storage, the highest spermatozoa motility and velocity were obtained in sperm diluted in IM2 compared to the other groups. IM2 could maintain a significantly higher ATP content of diluted sperm than IM1 and undiluted treatment for 2days. Similarly, the highest values of eyeing and hatching rates were observed in sperm diluted in IM2 compared to sperm in the other studied groups. It can be concluded that the obtained result is a novel and applicable approach to maintain semen quality of pikeperch during short-term storage, suggesting IM2 as a promising medium for short-term storage. The present study also opens possibilities for ensuring a reliable source of semen as a convenient approach for increasing genetic diversity in hatcheries.
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Affiliation(s)
- J Kristan
- Faculty of Fisheries and Protection of Waters, University of South Bohemia, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Zatisi 728, 389 25 Vodnany, Czech Republic
| | - H Dadras
- Faculty of Fisheries and Protection of Waters, University of South Bohemia, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Zatisi 728, 389 25 Vodnany, Czech Republic.
| | - T Policar
- Faculty of Fisheries and Protection of Waters, University of South Bohemia, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, Vodnany, Zatisi 728, 389 25 Vodnany, Czech Republic
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Güralp H, Pocherniaieva K, Blecha M, Policar T, Pšenička M, Saito T. Development, and effect of water temperature on development rate, of pikeperch Sander lucioperca embryos. Theriogenology 2017; 104:94-104. [PMID: 28822905 DOI: 10.1016/j.theriogenology.2017.07.050] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 07/28/2017] [Accepted: 07/29/2017] [Indexed: 11/18/2022]
Abstract
Knowledge of embryo development is essential to the application of reproductive biotechnology in aquaculture, including for pikeperch Sander lucioperca. We describe pikeperch embryo development and demonstrated effects of temperature on the duration of embryogenesis. Developmental stages in embryos incubated at 15 °C were identified as zygote, 0-1.5 h post-fertilization (hpf); cleavage, 2.5-7.5 hpf; blastula, 9-18.75 hpf; gastrula, 21-39, hpf; segmentation, 45-105 hpf; and hatching, 125-197 hpf. Additional groups of eggs were fertilized and incubated at 10, 15, 20, and 25 °C to document stages of development, development rate, and survival. The optimal fertilization and incubation temperature was shown to be 15 °C, with the highest fertilization, survival, and hatching rates. Embryo development was slower at 10 °C, with 45% of fertilized embryos surviving to hatching. Development was accelerated at 20 °C, and resulted in a 56% survival rate of fertilized embryos. At 25 °C, embryos did not develop to the blastula stage. Pikeperch could be a valuable percid model for research in which flexible incubation temperatures is required.
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Affiliation(s)
- H Güralp
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic.
| | - K Pocherniaieva
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - M Blecha
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - T Policar
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - M Pšenička
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
| | - T Saito
- University of South Bohemia in České Budějovice, Faculty of Fisheries and Protection of Waters, South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Research Institute of Fish Culture and Hydrobiology, Zátiší 728/II, 389 25 Vodňany, Czech Republic
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Stejskal V, Kouřil J, Policar T, Svobodová Z. Splenic lipidosis in intensively cultured perch, Perca fluviatilis L. J Fish Dis 2016; 39:87-93. [PMID: 25589287 DOI: 10.1111/jfd.12327] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/19/2014] [Revised: 10/29/2014] [Accepted: 11/01/2014] [Indexed: 06/04/2023]
Abstract
Macroscopically visible lipid deposition varying in size from pinpoint to 8-mm diameter was found in spleens of a population of intensively farmed perch, Perca fluviatilis L. over a 24-month rearing period. Large agglomerates of adipocytes distinguishable from surrounding normal tissue occurred in all individuals with spleen lipidosis. Several affected fish presented total dystrophy of large clusters of hepatocytes. Prevalence of lipidosis was 5.0% at 12 months and 16.6% at 24 months. There was no significant difference between fatty acid profiles of liver or perivisceral fat of perch with and without lipidosis except for linoleic, myristic, γ-linoleic, cis-eicosatrienic, palmitooleic acid. Body weight and hepatosomatic, perivisceral fat and splenosomatic indices were not associated with lipidosis. There was no significant effect of lipidosis on mortality or growth.
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Affiliation(s)
- V Stejskal
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
| | - J Kouřil
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
| | - T Policar
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
| | - Z Svobodová
- South Bohemian Research Center of Aquaculture and Biodiversity of Hydrocenoses, Institute of Aquaculture, Faculty of Fisheries and Protection of Waters, University of South Bohemia in Ceske Budejovice, Ceske Budejovice, Czech Republic
- Faculty of Veterinary Hygiene and Ecology, Veterinary Public Health and Animal Welfare, University of Veterinary and Pharmaceutical Sciences Brno, Brno, Czech Republic
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Bláha M, Šetlíková I, Peterka J, Musil J, Policar T. Planktonic or non-planktonic food in young-of-the-year European perch Perca fluviatilis in ponds. J Fish Biol 2014; 85:509-515. [PMID: 24920047 DOI: 10.1111/jfb.12427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2014] [Accepted: 04/09/2014] [Indexed: 06/03/2023]
Abstract
Higher biomass especially of some aquatic macrophyte species offered a higher density of phytophilous zoobenthos, but did not increase the proportion of non-planktonic to planktonic prey in young-of-the-year perch Perca fluviatilis. Both abundance and biomass of non-planktonic prey dominated over planktonic prey in the pond with lower biomass of aquatic macrophytes and lower food. Survival of P. fluviatilis was lower (20%) in the pond with lower food than in the other pond (34%), however, specific growth rate (1.3% day(-1) ) and final Fulton's condition factor of P. fluviatilis were similar in both ponds.
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Affiliation(s)
- M Bláha
- Faculty of Fishery and Protection of Waters, South Bohemian Research Centre of Aquaculture and Biodiversity of Hydrocenoses, University of South Bohemia in České Budějovice, Zátiší 728/II, 389 25 Vodňany, Czech Republic
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Svoboda J, Kozubíková E, Kozák P, Kouba A, Bahadir Koca S, Diler O, Diler I, Policar T, Petrusek A. PCR detection of the crayfish plague pathogen in narrow-clawed crayfish inhabiting Lake Eğirdir in Turkey. Dis Aquat Organ 2012; 98:255-259. [PMID: 22535876 DOI: 10.3354/dao02445] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Many populations of the narrow-clawed crayfish Astacus leptodactylus in Turkey, including those inhabiting Lake Eğirdir, declined drastically in the mid-1980s due to introduction of crayfish plague Aphanomyces astaci. However, unlike many other localities, there has been some recovery in the A. leptodactylus population inhabiting this lake even though crayfish plague has been suspected to have persisted since then. In support of this, DNA from 5 of 34 healthy-looking crayfish sampled recently from the lake tested positive by both conventional and real-time PCR using species-specific primers targeting the rDNA internal transcribed spacer region, and product sequence analysis confirmed the identification of A. astaci. This complies with other recent reports of coexistence of native European crayfish with this pathogen, and further research is now needed to identify the key mechanisms allowing it.
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Affiliation(s)
- J Svoboda
- Department of Ecology, Charles University, Prague, Czech Republic
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Stejskal V, Vejsada P, Cepak M, Špička J, Vacha F, Kouril J, Policar T. Sensory and textural attributes and fatty acid profiles of fillets of extensively and intensively farmed Eurasian perch (Perca fluviatilis L.). Food Chem 2011; 129:1054-9. [DOI: 10.1016/j.foodchem.2011.05.073] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Revised: 03/11/2011] [Accepted: 05/18/2011] [Indexed: 11/25/2022]
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Alavi SMH, Rodina M, Policar T, Kozak P, Psenicka M, Linhart O. Semen of Perca fluviatilis L.: Sperm volume and density, seminal plasma indices and effects of dilution ratio, ions and osmolality on sperm motility. Theriogenology 2007; 68:276-83. [PMID: 17559921 DOI: 10.1016/j.theriogenology.2007.05.045] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2007] [Revised: 04/30/2007] [Accepted: 05/09/2007] [Indexed: 11/21/2022]
Abstract
The objectives of the present study were to characterize sperm volume and density, seminal plasma indices (ionic contents and osmolality) and to study the effects of dilution ratio, ions and osmolality on sperm motility parameters (percentage of motile sperm and sperm velocity) in farmed European perch (Perca fluviatilis L.). The means of sperm volume (ml), sperm density (x10(9)spermml(-1)) and total number of sperm (volumexdensity) per fish were 2.75+/-0.51, 29.19+/-3.15 and 82.19+/-15.26. The seminal plasma osmolality (mOsmkg(-1)), sodium, chloride, potassium and calcium ions concentrations (mM) were measured to be 298.07+/-5.09, 130.97+/-2.19, 106.75+/-2.37, 10.70+/-0.61 and 2.41+/-0.09, respectively. At 15s post-activation of stripped sperm, the percentage of motile sperm (%) and sperm velocity (mums(-1)) were 91.90+/-1.27 and 115.54+/-1.25, respectively, and decreased significantly following sperm activation (P<0.05). The optimal sperm motility was observed when the sperm was prediluted in immobilizing solution (IS) at a ratio 1:50. Prediluted sperm showed the maximum velocity when activated in 2.5mM Ca(2+), 50mM K(+) and sucrose with osmolality 100mOsmkg(-1). Neither Ca(2+) nor K(+) showed a significant effect on the percentage of motile sperm at 15s post-activation. Osmolality higher than 200mOsmkg(-1) significantly decreased the percentage of motile sperm, while osmolality of 300mOsmkg(-1) or above totally suppressed sperm motility.
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Affiliation(s)
- S M H Alavi
- University of South Bohemia, Research Institute of Fish Culture and Hydrobiology, 389 25 Vodnany, Czech Republic
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