Effect of stress on blood coagulation and haematology in rainbow trout (Salmo gairdneri)

Casillas, Edmundo; Smith, Lawrence W.

doi:10.1111/j.1095-8649.1977.tb04081.x

Cited by 148 publications

(73 citation statements)

References 34 publications

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“…In addition, the parameters of health criterion cannot impede assessing the experiment conclusion (Casillas and Smith, 1977;Cnaani et al, 2004). In the present study, fish in the low and high feeding intensity treatments had low erythrocyte counts and inflamed bodies.…”

Section: Feeding Intensity and Routine Blood Analysismentioning

confidence: 72%

“…Routine examination of blood parameters, including hemoglobin (HGB), erythrocyte count (RBC), leukocyte count (WBC), hematocrit and cytochemical staining, have been used in earlier studies to assess fish health status and circumstantial stress (Hesser, 1960;Blaxhall, 1972;Blaxhall and Daisley, 1973;Casillas and Smith, 1977). Liver function reflects oxidative stress and heavy metal pollution; accordingly, malondialdehyde (MDA), SOD, glutathione (GSH) and glutathione peroxidase (GSH-PX) are important functional factors (Jos et al, 2005;Farombi et al, 2007) that have been extensively studied and used to evaluate environmental stress when fish are used as pollution indicators.…”

Section: Introductionmentioning

confidence: 99%

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Untitled

He¹,

Qiang²,

Gabriel³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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The effects of feeding-intensity stress on biochemical indices of the GIFT strain of Nile tilapia were investigated in a recirculating freshwater system. Differences in serum and liver biochemistry, routine blood measurements, and growth were examined in fish fed three experimental rations (2%, 4% and 6% of fish biomass daily). Larger rations led to higher SGR but lower FCR, PER and SR. Smaller rations caused higher levels of HSI and cortisol. Fish on the 2% and 6% diets had lower liver levels of C3, LZM, SOD, Glu-GOD, HDL-C, TG, ALP, CAT and higher T4, AST, MDA than those on 4% diets. The 6% group had the lowest levels of LDH, TP, GSH, and GSH-PX. The 2% and 6% groups had lower blood levels of HGB, MCHC, RBC, and WBC than the 4% group; 2% fish had the highest RDW-CV and RDW-SD levels. Therefore, the optimal feeding rate for GIFT tilapia at about 29°C is 4% biomass/day; 6%/day could increase productivity but would be uneconomical; 2%/day would be unsuitable in the absence of natural food. We conclude that high and low feeding intensities would adversely influence the physiological health of tilapia and their resistance to disease, and reduce FCR.

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Section: Feeding Intensity and Routine Blood Analysismentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Untitled

He¹,

Qiang²,

Gabriel³

et al. 2015

Turk. J. Fish. Aquat. Sci.

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“…A high number of thrombocytes reduces clotting time (Srivastava, 1969), by as much as 50% in cases where the number of circulating thrombocytes was found to be 1 to 2 times higher than normal (Cassilas & Smith, 1977). Some species exposed to copper displayed a high increase in the thrombocyte percentage (Mishra & Srivastava, 1980;Dick & Dixon, 1985) although, the thrombocytes increase did not entail clotting time reduction in fish exposed to copper due to thrombocyte malfunction (Nussey et al, 1995c).…”

Section: Discussionmentioning

confidence: 99%

Hematological and physiological changes induced by short-term exposure to copper in the freshwater fish, Prochilodus scrofa

et al. 2002

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Hematological and physiological changes in the blood of juveniles of the freshwater fish, Prochilodus scrofa were determined after acute exposure to 20, 25, and 29 µgCu L -1 in water (pH 7.5; hardness 24.5 mg L -1 as CaCO 3 ) for 96 h. Copper exposure to 25 and 29 µgCu L -1 caused significant increase in the hematocrit and red blood cell values. The increase in red blood cells was associated with increase in whole blood hemoglobin only in fish exposed to 29 µgCu L -1 . Leukocytes increased following copper exposure and were significantly higher in fish exposed to 29 µgCu L -1 . Differential leukocyte percentage displayed significant reduction in lymphocytes and an increase in neutrophils in fish exposed to 25 and 29 µgCu L -1 . The percentage of monocytes remained unchanged after copper exposure. The thrombocytes did not change. There was a significant decrease in plasma [Na + ] and [Cl -] and a significant drop in blood pH in fish exposed to 25 and 29 µgCu L -1 while [K + ] showed significant increase in fish exposed to 29 µgCu L -1 . Copper exposure led to ionoregulatory impairment, although chloride cell hypertrophy was induced. The changes in red blood cells suggest a compensatory response to respiratory surface reduction of gills (tissue damage and cell proliferation) in order to maintain oxygen transference from water to the tissues, allowing the fish to survive during the so-called shock phase of LC 50 exposure, at least while at rest. tenha sido induzida, e as mudanças nos parâmetros hematológicos sugerem resposta compensatória à redução da superfície respiratória das brânquias (lesões no tecido branquial e proliferação celular) de forma a manter a transferência do oxigênio da água para o sangue, permitindo a sobrevivência dos peixes durante a fase de choque da exposição a CL 50 , pelo menos, sob condições de repouso.Palavras-chave: cobre, parâmetros hematológicos, íons plasmáticos, histopatologia branquial, Prochilodus scrofa.

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“…The decrease in the number of circulating leucocytes recorded in salmonid fish after exposure to some stressful conditions is a consequence of corticosteroid action (Weinreb, 1958 ;McLeay, 1973) and has been classified as a secondary stress effect (Mazeaud et al, 1977 (Soivio et a/., 1972(Soivio et a/., , 1974(Soivio et a/., , 1976 and erythrocyte swelling (Holeton and Randall, 1967 ;Soivio et al, 1973 ;Casillas and Smith, 1977). These (Smith et al, 1967 ;Soivio et al 1972Soivio et al , 1975Cairns and Christian, 1978 ;Lane, 1979 …”

Section: Introductionmentioning

confidence: 99%