Plasma chemistry and urine analysis in Salmonella‐induced polyuria in racing pigeons<i>(Columba livia)</i>

Gevaert, D.; Nelis, Jelle; Verhaeghe, B. J.

doi:10.1080/03079459108418776

Cited by 12 publications

(3 citation statements)

References 4 publications

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“…They consumed between 4 and 6 times their body mass in nectar per day when feeding on dilute sucrose solutions, depending on ambient temperature. Such phenomenal water ingestion rates would lead to pathological consequences in many terrestrial vertebrates (Lumeij and Westerhof, 1988;Gebel et al, 1989;Gevaert et al, 1991;de Leon et al, 1994), yet sunbirds were able to compensate for varying nectar energy density and increased thermoregulatory energy demands with no apparent difficulty. Our results suggest that water processing does not limit energy intake in Palestine sunbirds within the range we tested.…”

Section: Discussionmentioning

confidence: 99%

Renal function in Palestine sunbirds: elimination of excess water does not constrain energy intake

McWhorter

Rio

Pinshow

et al. 2004

Journal of Experimental Biology

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SUMMARY Although the renal responses of birds to dehydration have received significant attention, the consequences of ingesting and processing large quantities of water have been less studied. Nectar-feeding birds must often deal with exceptionally high water intake rates in order to meet their high mass-specific energy demands. Birds that ingest large volumes of water may either eliminate excess water in the kidney or regulate the volume of water absorbed in the gastrointestinal tract. Because water absorption in the gastrointestinal tract of Palestine sunbirds (Nectarinia osea)decreases with increasing water ingestion rate, we predicted that glomerular filtration rate (GFR) in these birds would not be unusually high in spite of large ingested water loads. When feeding on dilute sucrose solutions, sunbirds ingested between 4 and 6 times their body mass in nectar per day, yet they were able to compensate for varying nectar energy density and increased thermoregulatory energy demands with no apparent difficulty. GFR was lower than predicted (1976.22±91.95 μl h-1), and was not exceptionally sensitive to water loading. Plasma glucose concentrations were high, and varied 1.8-fold between fasted (16.08± 0.75 mmol l-1) and fed (28.18±0.68 mmol l-1) sunbirds, but because GFR was low, glucose filtered load also remained relatively low. Essentially the entire glucose filtered load (98%) was recovered by the kidney. Renal fractional water reabsorption (FWR) decreased from 0.98 to 0.64 with increasing water intake. The ability of Palestine sunbirds to reduce the absorption of ingested water in the gastrointestinal tract may resolve the potential conflict between filtering a large excess of absorbed water in the kidney and simultaneously retaining filtered metabolites.

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Section: Discussionmentioning

confidence: 99%

Renal function in Palestine sunbirds: elimination of excess water does not constrain energy intake

McWhorter

Rio

Pinshow

et al. 2004

Journal of Experimental Biology

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“…Most ingested water is absorbed from the intestine (McWhorter and Martínez del Rio 2000) and so must be processed by the kidneys and eliminated into the large intestine (Goldstein and Skadhauge 2000). Extraordinary water con-sumption leads to dilution of blood plasma that can decrease concentrations of necessary solutes (e.g., sodium) in the plasma to toxic levels (Faenestil 1977;Gevaert et al 1991).…”

Section: The Inadequacy Of Fruit For Recovery Of Body Reserves In Migmentioning

confidence: 99%

Diet Quality and Food Limitation Affect the Dynamics of Body Composition and Digestive Organs in a Migratory Songbird (Zonotrichia albicollis)

Pierce

McWilliams

2004

Physiological and Biochemical Zoology

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Migrating songbirds interrupt their feeding to fly between stopover sites that may vary appreciably in diet quality. We studied the effects of fasting and food restriction on body composition and digestive organs in a migratory songbird and how these effects interacted with diet quality to influence the rate of recovery of nutrient reserves. Food limitation caused white-throated sparrows to reduce both lean and fat reserves, with about 20% of the decline in lean mass represented by a decline in stomach, small intestine, and liver. During refeeding on diets similar in nutrient composition to either grain or fruit, food-limited grain-fed birds ate 40% more than did control birds, and they regained body mass, with on average 60% of the increase in body mass composed of lean mass including digestive organs. In contrast, food-limited fruit-fed birds did not eat more than did control birds and did not regain body mass, suggesting that a digestive constraint limited their food intake. The interacting effects of food limitation and diet quality on the dynamics of body composition and digestive organs in sparrows suggest that the adequacy of the diet at stopover sites can directly influence the rate of recovery of body reserves in migrating songbirds and hence the pace of their migration.

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“…A wide range of gram-positive and gram-negative bacteria are known to cause kidney disease, either as an ascending infection or as part of a systemic disease. Staphylococci and streptococci are common pathogens [4,5]. Other bacteria that can affect the kidney include members of Enterobacteriaceae, Listeria sp, Erysipelothrix rhusiophathiae, and Pasteurella sp [6].…”

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confidence: 99%

Types of Renal Disease in Avian Species

Schmidt¹

2006

Veterinary Clinics of North America: Exotic Animal Practice

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Renal disease in birds is frequently encountered. Like most other animals, birds are susceptible to a full spectrum of renal insults,such as toxins, tumors, infections, and degenerative conditions. Accurate diagnosis of renal disease is based on a complete history,physical examination, and laboratory evaluation of the patient. Because it is often required for a more definitive diagnosis, special attention is given to histopathologic evaluation of renal tissue,whether through a premortem biopsy or collection at gross necropsy.

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Plasma chemistry and urine analysis in Salmonella‐induced polyuria in racing pigeons(Columba livia)

Cited by 12 publications

References 4 publications

Renal function in Palestine sunbirds: elimination of excess water does not constrain energy intake

Renal function in Palestine sunbirds: elimination of excess water does not constrain energy intake

Diet Quality and Food Limitation Affect the Dynamics of Body Composition and Digestive Organs in a Migratory Songbird (Zonotrichia albicollis)

Types of Renal Disease in Avian Species

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