Relationship of plasma total protein and albumin to total calcium in peregrine falcons<i>(Falco peregrinus)</i>

Lumeij, J. T.; Remple, J. D.; Riddle, K.E.

doi:10.1080/03079459308418910

Cited by 20 publications

(8 citation statements)

References 6 publications

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“…0.001 ; in order to avoid pseudoreplication, mean values for n p 18 each individual were used). This positive correlation was described in other birds (Lumeij 1990;Lumeij et al 1993) and was related to the transport of total calcium by plasma proteins. A strong relationship to the metabolism of the muscle might be suggested in this sense.…”

Section: Strategy Of Subfed Gullsmentioning

confidence: 74%

A Biochemical Study of Fasting, Subfeeding, and Recovery Processes in Yellow‐Legged Gulls

Alonso‐Álvarez

Ferrer

2001

Physiological and Biochemical Zoology

104

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JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org. ABSTRACTAn investigation of the effects of fasting, subfeeding, and refeeding on plasma biochemistry was carried out on 22 captive yellow-legged gulls Larus cachinnans Pallas. These birds showed the same fasting endurance model described in other species, but with an important decrease in glucose plasma concentration and very great differences between individuals when reaching the deterioration limit, suggesting a moderate physiological adaptation to long periods of fasting. A different model was proposed in subfed gulls in relation to fasted gulls, based on lipid and protein use, which could be reflected by changes in nitrogen wastes and triglyceride levels in this experiment. Thus, the subfed gulls might use protein directly from the diet as an energy source, thereby reducing the use of fat stores. The gulls quickly recovered body mass during the refeeding period, but while some plasma substances quickly reached their initial values, others showed many changes before the end of the experiment, which could reflect a process of metabolic restabilization. These results contribute to a better knowledge of fasting, subfeeding, and refeeding processes in birds and can be added to a recent study about fasting in gulls.

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Section: Strategy Of Subfed Gullsmentioning

confidence: 74%

A Biochemical Study of Fasting, Subfeeding, and Recovery Processes in Yellow‐Legged Gulls

Alonso‐Álvarez

Ferrer

2001

Physiological and Biochemical Zoology

104

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“…However, in this study the IgG concentrations were below the detection limit in all treatment groups. In addition, Lumeij et al [32] demonstrated that a significant correlation existed between total calcium and total protein concentration in birds, which may serve as evidence that the total calcium concentration was improved by the addition of PLA. On the other hand, most of the blood profile traits, except lymphocytes, were not continually improved by the levels PLA.…”

Section: Blood Characteristicsmentioning

confidence: 95%

Effects of phenyllactic acid on production performance, egg quality parameters, and blood characteristics in laying hens

Wang

Yoo

Lee

et al. 2009

Journal of Applied Poultry Research

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Primary Audience: Nutritionists, Researchers, Veterinarians SUMMARYOrganic acids have been widely used as feed additives to replace antibiotics in livestock feeds. Data on the use of phenyllactic acid (PLA) are lacking. The effects of PLA on production performance, egg quality parameters, and blood characteristics in laying hens were studied in a 35-d experiment. A total of 240 ISA Brown 36-wk-old layers were divided into the following 4 treatments: 1) control (basal diet), 2) control + 0.1% PLA, 3) control + 0.2% PLA, and 4) control + 0.3% PLA. Although supplementing the diet with PLA did not affect ADFI and FE, it linearly improved egg production rate, eggshell breaking strength, and Haugh units. Egg weight, eggshell thickness, and egg yolk color were not significantly altered by supplementing the diet with PLA. White blood cell, red blood cell, total protein, and albumin concentrations were higher in the control + 0.1% PLA and control treatment groups (P < 0.05), whereas the groups fed the control + 0.2% PLA and control + 0.3% PLA diets had greater (P < 0.05) lymphocyte concentrations. In conclusion, PLA may exert some positive effects to the immune system and egg production over the short term. It may be beneficial to supplement the diets of laying hens with PLA in the absence of antibiotics. This experiment involved a small experimental sample and a short time, so the beneficial effects of PLA should be studied further in commercial farms over the long term.

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“…Since in a previous study it was shown that 42% of the variability in plasma calcium concentration was attributable to the difference in concentration of total protein (R 2 = 0.417) and an adjustment formula was derived on the basis of the total protein concentration (Lumeij et al, 1993), the adjusted Ca concentrations are also presented in Table 1. As reported previously (Lumeij et al, 1989), considerable differences in total protein concentrations can be expected when different protein standards are used.…”

Section: Discussionmentioning

confidence: 99%

“…Adjusted Ca(mmol/1) = Ca(mmol/1) -0.02. Total protein (g/1) + 0.67 (Lumeij et al, 1993. German Society for Clinical Chemistry (1972) using commercially available test combinations (Boehringer Mannheim GmbH, Mannheim, F.R.G) as reported previously (Lumeij and Wolfswinkel, 1988). Total bile acids were measured with an enzymatic kit for spectrofluorometric end-point determination (Sterognost-S* Flu, Nyegaard & Co, Diagnostics Division, Oslo).…”

Section: Methodsmentioning

confidence: 99%

Plasma chemistry in peregrine falcons (Falco peregrinus): Reference values and physiological variations of importance for interpretation

Lumeij

Remple

et al. 1998

Avian Pathology

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Reference values for the calculated albumin/globulin (A/G) ratio were 0.8 to 24. Based on previous studies, reference values for calcium were established using an adjustment formula using plasma total protein concentrations (before correction 1.86 to 2.49, after correction 1.97 to 2.46 mmol/l). Results of plasma potassium concentrations were erratic which was shown to be due to a time lag between sample collection and separation of plasma and cells.

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Relationship of plasma total protein and albumin to total calcium in peregrine falcons(Falco peregrinus)

Cited by 20 publications

References 6 publications

A Biochemical Study of Fasting, Subfeeding, and Recovery Processes in Yellow‐Legged Gulls

A Biochemical Study of Fasting, Subfeeding, and Recovery Processes in Yellow‐Legged Gulls

Effects of phenyllactic acid on production performance, egg quality parameters, and blood characteristics in laying hens

Plasma chemistry in peregrine falcons (Falco peregrinus): Reference values and physiological variations of importance for interpretation

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