Influence of sex, source, health status and acclimation on the haematology of Clarias gariepinus (Burch,1822)

Gabriel, UU; Ezeri, G. N. O.; Opabunmi, O. O.

doi:10.5897/ajb2004.000-2090

Cited by 98 publications

(82 citation statements)

References 11 publications

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“…The incorporation of yeast into the diet boosted the PCV level (Kenari et al, 2012). This was similar to the values described for Nile Tilapia (Nilza et al, 2003) but lower than the value reported by Gabriel et al (2001Gabriel et al ( , 2004 on C. gariepinus. Neutrophils increased with increase in yeast inclusion observed in this study, similar to Ayyaru and Ventakatesen (2010).…”

Section: Discussionsupporting

confidence: 49%

Substitution of soyabean meal with bioactive yeast in the diet of Clarias gariepinus: Effect on growth rate, haematological and biochemical profile

Ezenwaji¹,

Iluno²,

Atama³

et al. 2012

Afr. J. Biotechnol.

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The effects of substituting soyabean meal with yeast (Sacharomyces cerevisae) meal in diets fed to Clarias gariepinus was studied for 60 days. Growth response, haematological and biochemical parameters were evaluated. 105 juvenile three-weeks old C. gariepinus composed of seven treatment groups replicated thrice were used for the study. Each replicate had five fishes. The Groups (A to G) were: Group A, 0% yeast meal (YM) (15 juveniles); Group B, 10% YM; Group C, 20%; Group D 30%; Group E, 40%; Group F, 50%; and Group G, 100% YM. The acceptability of yeast based diets by C. gariepinus was studied using the time to strike index, and their growth responses studied using 'weight gain' and 'specific growth rate' while the haematological and biochemical indices were assessed using the different blood parameters. The results indicate that substituting yeast meal for soyabean meal in diets fed C. gariepinus juveniles slightly increased the growth response. All the catfishes fed with 100% yeast meal (diet G) died within the first week. Increasing proportion of substitutions of yeast meal in diets fed to C. gariepinus juveniles, led to weight increase in all dietary types with exception of diet G and higher growth induction in catfishes fed diets with exception of diet B. Diet F induced better mean growth than the control diet. Substitution of various levels of soyabean meal with yeast meal after 30 days led to better result on haemoglobin (HB), red blood cell (RBC), packed cell volume (PCV) and white blood cell (WBC) in diet C Group when compared to the control, while after 60 days, diet F Group had better HB, RBC, PCV and WBC values than the control. Substitution of varied percentages of soyabean meal with yeast meal for 60 days led to significantly higher (P < 0.05) serum, total protein and cholesterol in some of the groups on yeast meal inclusion when compared to the control, and significantly higher (p < 0.05) serum aspartate aminotransferase activity in all the groups given yeast meal based diets when compared to the control (Group A). There were however no significant differences (p > 0.05) between those on yeast inclusion and the control in the serum alanine aminotransferase activity. This study shows that yeast inclusion at 50% (diet F) led to significantly better growth, weight gain, haematological and biochemical profile than other diets. This study shows that yeast inclusion may have a better effect on fish diet at lower levels of inclusion. Diet F (50% yeast inclusion) was considered the best level of inclusion because of enhanced nutritional status, better blood parameters and improved health of fishes.

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Section: Discussionsupporting

confidence: 49%

Substitution of soyabean meal with bioactive yeast in the diet of Clarias gariepinus: Effect on growth rate, haematological and biochemical profile

Ezenwaji¹,

Iluno²,

Atama³

et al. 2012

Afr. J. Biotechnol.

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“…In our experiment no change was observed in differential counts between healthy and infected fish. Changes in WBC and differential counts have been reported to play important roles in the assessment of the state of health of fish (Gabriel et al 2004). It is known that leukocyte cells are normally lower in healthy fish and could be used as a significant indicator for infectious diseases.…”

Section: Discussionmentioning

confidence: 99%

Hematological parameters associated with parasitism in pike, Esox lucius caught from Anzali wetland

Fallah

Khara

Rohi³

et al. 2013

J Parasit Dis

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This study involved 120 pike, Esox lucius, captured from Anzali wetland. Parasite fauna were identified in captured fish. Also, changes of haematological parameters were compared both infected and uninfected fish. Parasitological inspections revealed the following infestations: Skin: Lernea cyprinacea, Argulus foliaceus (Crustacean) and Tricodina sp. (Ciliatea). Gill: Dactylogyrus sp. (Digenea) and Tetraonchus monenteron (Monogenea). Eye: Diplostomum spathaceum (Digenea). Gut: Eustrongylides exises, Rhipdocotyle illense, Raphidascaris acus (Nematode), Corynosoma Strumosum (Acanthocephala). Most prevalence and intensity were related to Eustrongylides exises and Rhipdocotyle illense. Following haematological parameters were evaluated: haematocrit, haemoglobin concentration, erythrocyte and leukocyte counts, mean cell volume (MCV), mean cell haemoglobin, mean cell haemoglobin concentration lymphocytes, monocytes and eosinophils. Significant difference was found for MCV between infected and uninfected fish.

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“…Furthermore, due to the direct contact with water, fish's blood characteristics are closely related to the animal's response to the environment (GABRIEL et al, 2004). Changes in haematological values may occur due to changes in the parameters of water quality, the presence of stressing factors such as high organic compounds, high stocking density, and handling procedures (BARCELLOS et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Haematological and parasitological assessment of silver catfish Rhamdia quelen farmed in Southern Brazil

Brum

Tancredo

Hashimoto

et al. 2014

Rev. Bras. Parasitol. Vet.

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This study evaluated for two years the haematological parameters and the occurrence of gill parasites in silver catfish Rhamdia quelen, farmed in the state of Santa Catarina, southern Brazil. Between March 2010 and January 2012, a total of 137 fish were caught in a fish farm to compare the haematological and parasitological analysis, during hot and cold seasons. Simultaneously, water quality parameters were measured in the pond to analyze the relationship between environmental conditions and haematology and parasitism. During the hot season, there was an increase in water temperature, electrical conductivity and ammonia followed by a decrease in dissolved oxygen, pH, transparency and alkalinity. Two species of Monogenea were observed in the gills, Aphanoblastella mastigatus (Dactylogyridae) and Scleroductus sp. (Gyrodactylidae). Additionally, during this season, there was a significant increase (p<0.05) in the mean intensity of infection by Monogenea, as well as total leukocytes number, thrombocytes and lymphocytes, and a reduction in monocytes. The changes might be caused by parasitism and/or environmental variations between seasons.Keywords: Siluriformes, parasitology, gills, haematology, blood, seasons. ResumoO presente estudo avaliou, durante dois anos, os parâmetros hematológicos e a ocorrência de parasitos branquiais em jundiá Rhamdia quelen, cultivado no Estado de Santa Catarina, Sul do Brasil. Entre março de 2010 e janeiro de 2012, um total de 137 jundiás foi coletado de uma piscicultura para comparar os parâmetros hematológicos e parasitológicos durante as estações quente e fria. Simultaneamente, foram medidos os parâmetros de qualidade da água do viveiro, para relacionar as condições ambientais com a hematologia e o parasitismo. Na estação quente, houve aumento da temperatura, condutividade elétrica e amônia, e redução do oxigênio dissolvido, pH, transparência e alcalinidade. Duas espécies de Monogenea foram observadas nas brânquias, Aphanoblastella mastigatus (Dactylogyridae) e Scleroductus sp. (Gyrodactylidae). Na estação quente, houve aumento significativo (p<0,05) da intensidade média de infecção por Monogenea, bem como dos valores de leucócitos totais, trombócitos e linfócitos, e redução significativa dos monócitos. As diferenças observadas podem ter sido causadas pelas variações ambientais entre as estações.

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Influence of sex, source, health status and acclimation on the haematology of Clarias gariepinus (Burch,1822)

Cited by 98 publications

References 11 publications

Substitution of soyabean meal with bioactive yeast in the diet of Clarias gariepinus: Effect on growth rate, haematological and biochemical profile

Substitution of soyabean meal with bioactive yeast in the diet of Clarias gariepinus: Effect on growth rate, haematological and biochemical profile

Hematological parameters associated with parasitism in pike, Esox lucius caught from Anzali wetland

Haematological and parasitological assessment of silver catfish Rhamdia quelen farmed in Southern Brazil

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