Effects of acute stress on the immune system of the dab, Limanda limanda

Pulsford, A.; Lemaire-Gony, S.; Tomlinson, Michael G.; Collingwood, N.; Glynn, Paul

doi:10.1016/0742-8413(94)00053-d

Cited by 59 publications

(60 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…However, highest Hb (10.92 gdl -1 ) and HCT values (38.26%) were recorded for fish fed 45% protein diet. An increase in RBC count was evident with the increase in dietary protein levels, which may have occurred due to its early release from the storage pool in the spleen [59,60], thus, causing a change in MCH values as well.…”

Section: Discussionmentioning

confidence: 94%

Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis

Ahmed¹,

Maqbool²

2017

Fish Aquac J

View full text Add to dashboard Cite

An 8-week feeding trial was conducted to study the effects of dietary protein levels on the growth, feed utilization and haemato-biochemical parameters of mirror carp, Cyprinus carpio specularis (1.50 ± 0.02 g; 4.5 ± 0.05 cm). Six casein-gelatin based isocaloric (367 kcal 100 g -1 , gross energy) diets containing graded levels of dietary protein (25%-50% CP) were formulated. 20 fish were randomly stocked in triplicate groups in 75L circular trough fitted with continuous flow-through system and fed experimental diets at 4% BW/day at 0800 and 1700h. Maximum live weight gain (258%), best feed conversion ratio (FCR) (1.63) and protein efficiency ratio (PER) (1.53) were obtained in fish fed diet containing 40% dietary protein. However, quadratic regression analysis live weight gain, FCR, PER and body protein deposition (BPD) data indicated requirements for dietary protein at 43.5%, 41.6%, 34.7% and 37.3% of dry diet, respectively. Significantly higher whole body protein, low moisture and intermediate body fat contents were recorded at 40% protein containing diet (P<0.05). While minimum ash content was recorded at 25% protein level. The highest HIS value (3.39%) was observed at the lowest protein level. Significant differences were also observed in Hb, HCT and RBC values of different groups fed with varying levels of dietary protein (P<0.05). Whereas, no significant differences were observed in their WBC count except at 25% protein level, where higher WBC count was recorded (P>0.05). Based on the above results, it is recommended that 41.5% protein level would be useful for optimum growth and efficient feed utilization of this fish species.

show abstract

Section: Discussionmentioning

confidence: 94%

Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis

Ahmed¹,

Maqbool²

2017

Fish Aquac J

View full text Add to dashboard Cite

show abstract

“…The drop in total number of leukocytes (McLeay and Gordon 1977;Wedemeyer et al 1983;Wedemeyer et al 1990) as well as monocytopenia, lymphopenia, and necrophilia (McLeay 1975;Johanson-Sjobeck 1978;Agrawal et al 1979;Pulsford et al 1994) are common consequences of acute stress in fish. Langston et al (2002) reported that temperatures above the tolerance range diminish total leukocyte numbers in halibut (Hippoglossus hipoglossus L.) and Engelsma et al (2003) and Pettersen et al (2005) showed that thermal shock diminishes the number of B lymphocytes and increases granulocytes in Cyprinus carpio and Salmo salar, respectively, coinciding with some results of the present investigation.…”

Section: Discussionmentioning

confidence: 97%

Effects of different artificial photoperiods and temperatures on haematological parameters of rainbow trout (Oncorhynchus mykiss)

Valenzuela

Silva

Klempau

2007

Fish Physiol Biochem

View full text Add to dashboard Cite

This study assessed the effects of two artificial photoperiods (LD 24:0 and LD 12:12) and three temperature regimes (9, 11, and 18 degrees C) for 30 days on haematological parameters of trout (Oncorhynchus mykiss) kept in freshwater. Samples were taken at days 7, 14, and 30 during exposure to treatments. A higher mortality (22%) and lower oxygen concentration (<8.0 mg/l) were associated with the combination of photoperiod LD 24:0 and 18 degrees C. The LD 24:0 photoperiod (independently of temperature) increased the haematocrit and the number of erythrocytes at days 7, 14, and 30 (P < 0.01). A temperature of 18 degrees C (independently of photoperiod regimes) diminished the number of total leucocytes, lymphocytes and thrombocytes (P < 0.01). The LD 24:0 photoperiod (also independently of temperature) lowered the number of lymphocytes only after 14 days of experimentation (P < 0.01). Interaction between artificial photoperiod and temperature was only observed at day 14 for polychromatophils (P < 0.01). These results resemble the effects of stress caused by elevated temperatures and the application of continuous light photoperiods, indicating that survival risks may develop in trout farming when this combination is met.

show abstract

“…Low numbers of both lymphocytes and thrombocytes are generally associated with stress (Wedemeyer et al 1990) by means of the immunosuppressive effect of cortisol (Pulsford et al 1994). In addition, Pickering and Cristie (1981) show elevated cortisol levels in sexually mature fish; furthermore, it must be considered that sexual hormones also play an immunosuppressive role (Slater and Schreck 1993;Harris and Bird 2000).…”

Section: Leukocytesmentioning

confidence: 97%

Some changes in the haematological parameters of rainbow trout (Oncorhynchus mykiss) exposed to three artificial photoperiod regimes

Valenzuela

Silva

Klempau

2006

Fish Physiol Biochem

View full text Add to dashboard Cite

Haematological parameters are often used as health status and stress indicators in fish. However, information on the effects of artificial photoperiods on these parameters is scarce and ambiguous. The consequences of three different artificial photoperiod regimes [light/day 12 h:12 h (LD 12:12) for 150 days as controls; LD 14:10 and LD 24:0, both for an initial 60 days, and then LD 12:12 for the remaining 90 days] were evaluated in trout. In all fish the haemogram and the erythrocyte production index (EPI) were assessed at days 7, 14, 30 and 60 (phase 1) and at days 90, 120 and 150 (phase 2). At the end of phase 1, photoperiods LD 14:10 and 24:0 induced higher production of immature (late basophilic) erythrocytes (0.06-0.08 · 10 12 cells/l, P < 0.05) and elevated EPI (young erythrocytes = 1.6 in LD 14:10, 2.25 in LD 24:0; late basophilic erythrocytes = 4.1-4.9 in LD 14:10, 3.3 in LD 24:0) than in controls (late basophilic erythrocytes = 0.02-0.04 · 10 12 cells/l; EPI young erythrocytes = 0.2-1.0; EPI late basophilic erythrocytes = 1.4-2.7). During phase 2, only reduced numbers of lymphocytes and thrombocytes were observed at day 150 in the LD 14:00 group. An increase in the EPI (1.9) of control young erythrocytes was found at day 150.

show abstract

Effects of acute stress on the immune system of the dab, Limanda limanda

Cited by 59 publications

References 32 publications

Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis

Effects of Dietary Protein Levels on the Growth, Feed Utilization and Haemato-Biochemical Parameters of Freshwater Fish, Cyprinus Carpio Var. Specularis

Effects of different artificial photoperiods and temperatures on haematological parameters of rainbow trout (Oncorhynchus mykiss)

Some changes in the haematological parameters of rainbow trout (Oncorhynchus mykiss) exposed to three artificial photoperiod regimes

Contact Info

Product

Resources

About