Plasma urea, creatinine and uric acid concentrations in relation to feeding in peregrine falcons (<i>Falco peregrinus</i>)

Lumeij, J. T.; Remple, J. D.

doi:10.1080/03079459108418743

Cited by 79 publications

(39 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Although plasma concentrations of uric acid and bile acids are considered important variables for the diagnosis of renal and hepatic disorders respectively, previous studies have shown that post-prandial elevations of uric acid an bile acid concentrations in peregrine falcons should be taken into account when these values are evaluated (Lumeij & Remple, 1991, 1992. Uric acid concentrations of up to 1880 fimoV have been seen in healthy peregrine falcons 8 h post-prandially.…”

Section: Discussionmentioning

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

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Discussionmentioning

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

Self Cite

View full text Add to dashboard Cite

show abstract

“…Uric acid is the principal end product of protein metabolism in birds and represents the bulk of waste nitrogen eliminated by the bird (Bell & Sturkie 1965), and can be derived from food protein (Featherston 1969;Alonso-Alvarez et al 2002). Several captive studies in birds have demonstrated that dietary protein increases plasma UA (Wilson & Miles 1988;Hocking 1989;Bordas & Merat 1991;Lumeij & Remple 1991).…”

Section: Blood Parametersmentioning

confidence: 98%

Effects of artificial foods on the blood chemistry of the Australian magpie

2006

View full text Add to dashboard Cite

Bird feeding on residential property is a popular activity throughout Western countries. Advocates insist the practice is beneficial, while opponents maintain that it can result in a wide range of negative outcomes including malnutrition. The biological effects of 'backyard feeding' were studied in Australian magpies Gymnorhina tibicen during the non-breeding season in 1999 in the Greater Brisbane and the Lockyer Valley regions, south-east Queensland, Australia. Six magpie populations were selected and 70 birds were individually tagged for identification. The birds were provided with processed foods, 20-40 g per bird daily. To monitor the effects of the food, blood chemistry and body mass (BM) were used as indices. Significant effects were observed in BM and plasma cholesterol (PC), showing strong sensitivity to food provisioning. Significant effects on PC and uric acid were found only when birds were fed dog sausage. Results suggest that blood PC levels in magpies are readily influenced by, probably, the lipids present in food, and that the type of food can affect blood PC levels. These effects may occur widely among fed magpies if the influence that we demonstrated at plasma level can be generalized. Following the free-ranging study, six magpies were captured and subjected to a 6-day captive experiment to determine whether the selected foods had the potential to alter the birds' blood chemistry. It was found that all of the foods, when provided ad libitum, influence at least two of the three blood parameters (PC and non-esterified fatty acids). Due to its popularity, wildlife feeding will continue. To make wildlife-feeding activities truly sustainable, there is a need for further studies. This study clearly demonstrated that the physiology of wild magpies can be affected by 'backyard feeding'.

show abstract

“…In particular, the age and sex of the birds, season of sampling (Gerlach 1979), time of feeding (Lumeij and Remple 1991), stress and food source (Kraft 1998) or diagnostic tools used before sampling (Lierz and others 1998) may effect plasma chemistry variables. In addition, the stage of training and the health status of the bird may effect the values as well.…”

mentioning

confidence: 99%

Plasma chemistry reference values in hybrid falcons in relation to their species of origin

Lierz

Hafez

2006

Veterinary Record

View full text Add to dashboard Cite

Twenty-one blood chemistry parameters were determined in 127 peregrine falcons (Falco peregrinus), 79 gyr-peregrine hybrids and 166 gyr-saker hybrids. These parameters, together with those previously established in 53 gyr falcons (Falco rusticolus) and 234 saker falcons (Falco cherrug), were compared. There were statistically significant differences in 15 of the parameters between the saker and peregrine falcons; the saker and gyr falcons; the saker and gyr-saker hybrids; the peregrine and gyr falcons; and the peregrine and gyr-peregrine hybrids, but not between the gyr falcons and the gyr-saker falcon hybrids.

show abstract

Plasma urea, creatinine and uric acid concentrations in relation to feeding in peregrine falcons (Falco peregrinus)

Cited by 79 publications

References 6 publications

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

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

Effects of artificial foods on the blood chemistry of the Australian magpie

Plasma chemistry reference values in hybrid falcons in relation to their species of origin

Contact Info

Product

Resources

About