Blood Constituents and Their Relation to Diet in Urban and Rural House Sparrows

Gavett, Ann P.; Wakeley, James S.

doi:10.2307/1368873

Cited by 56 publications

(31 citation statements)

References 13 publications

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“…Factors responsible for these variations in TPP among age groups are unclear for our results contrast with those of other studies examining species like American Kestrels (Falco sparverius) (Dawson and Bortolotti 1997b) and House Sparrows (Passer domesticus) (Gavett and Wakeley 1986). Differences between studies could be due to variation in diets among age groups.…”

Section: Age and Condition Indicescontrasting

confidence: 96%

“…Plasma proteins play an important role in the preservation of blood volume and in the maintenance of an optimal blood pH (Sturkie 1976), and they often decrease in response to stress (Sturkie 1976) and vary with diet quality (Gavett and Wakeley 1986). Several studies have reported relationships between plasma proteins and residual mass (mass corrected for structural size) and have suggested that TPP is often related to the nutritional status in animals (Messier et al 1987;de le Court et al 1995;Dawson and Bortolotti 1997b).…”

Section: Background On Body Condition Indicesmentioning

confidence: 99%

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Physiological ramifications of habitat selection in territorial male ovenbirds: consequences of landscape fragmentation

Mazerolle

Hobson

2002

Oecologia

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Since boreal forest fragments are of lower quality than contiguous forest for breeding Ovenbirds (Seiurus aurocapillus), we predicted that competition for breeding sites in contiguous forest should lead to a greater prevalence of individuals in better condition in these habitats. We quantified male condition using morphological and hematological indices. Males in contiguous forest were larger than males in forest fragments and had higher hematocrits and mean corpuscular volumes, as well as a greater prevalence of polychromatic cells. These hematological indices are all positively associated with energy demands or stress, or both. Furthermore, the proportion of heterophils, a type of white blood cell positively associated with stress, decreased through the breeding season only for males in forest fragments. Total plasma protein and mass corrected for structural size did not differ between landscapes, suggesting that the nutritional status of males was similar between landscapes. All of these trends were independent of age. Overall, these results indicate that size of male Ovenbirds could be playing a role in habitat selection, but that defending territories in contiguous forest, where breeding success is higher and populations are denser, seems to result in greater energetic demands and a reduced immunological condition. These results demonstrate a physiological component to contrasting consequences associated with territory acquisition in birds.

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Section: Age and Condition Indicescontrasting

confidence: 96%

Section: Background On Body Condition Indicesmentioning

confidence: 99%

Physiological ramifications of habitat selection in territorial male ovenbirds: consequences of landscape fragmentation

Mazerolle

Hobson

2002

Oecologia

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“…Big pheasantries regularly order preventive health status examinations. The haematological examination is among the methods which may contribute to the detection of some changes in health status, which may not be apparent during physical examination but which affect the fitness of the birds (Kronfeld and Medway, 1969;Bradley and Threlfall, 1974;Gavett and Wakeley, 1986).…”

mentioning

confidence: 99%

Changes of haematological parameters in common pheasant throughout the year

Hauptmanová¹,

Malý²,

Literák³

2006

Vet. Med.

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ABSTRACT:The haematological parameters of the common pheasant (Phasianus colchicus), the dynamics of changes in blood count parameters with regard to the season of the year and reproduction status, and the effects of sex and body condition on the haematological parameters of blood were studied. In total, 574 blood samples were collected. The samples were collected from pheasants from the age of 6 months, prior to the laying period, and after the laying period. Packed cell volume and haemoglobin concentration significantly increased in males during the period of growth and decreased during the period of reproductive activity. Significantly higher values were detected in males compared to females in erythrocyte count, packed cell volume, haemoglobin concentration and in mean corpuscular haemoglobin concentration. A statistically significant positive relationship was detected between weight and the values of most of the parameters related to red blood cells.

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“…A haematological examination is one method that contributes to detection of some changes in health status which may not be apparent during physical examination, but which affect the fitness of the birds (2,9,20).…”

Section: Resultsmentioning

confidence: 99%

Changes in selected haematological and biochemical parameters in debeaked pheasant hens during the laying period

VOSLAROVA¹

2014

Ankara Üniversitesi Veteriner Fakültesi Dergisi

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Summary:Changes in selected haematological and biochemical parameters during the laying period were monitored in pheasant hens kept in a cage system. Thermal cauterization of one-third of the upper part of the beak was performed before the birds were placed in the cage at the beginning of the laying period. Randomly selected pheasant hens were sampled for haematological and biochemical analysis at the beginning of the laying period, and the same hens were subsequently sampled after 6 and 12 weeks of the laying period. The results showed significant changes in the monitored haematological and biochemical parameters during egg laying. At the time when laying capacity approached a maximum, a fall was seen (P<0.05) in haematocrit, haemoglobin, erythrocytes and plasma glucose values, whereas leukocytes, lymphocytes, basophils and plasma uric acid exhibited an increase (P<0.05). At the end of the laying period, a higher (P<0.05) count of leukocytes, lymphocytes, eosinophils, basophils, monocytes, plasma alanine aminotransferase, uric acid, lactate and calcium concentrations were seen, whereas for haematocrit, heterophil to lymphocyte ratio, plasma total protein, and glucose lower (P<0.05) values were recorded in comparison with the values of the given indicators at the beginning of the laying period. The results determined provide new information about the dynamics of selected haematological and biochemical indicators in clinically healthy common pheasant layers during the course of the laying period.

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Blood Constituents and Their Relation to Diet in Urban and Rural House Sparrows

Cited by 56 publications

References 13 publications

Physiological ramifications of habitat selection in territorial male ovenbirds: consequences of landscape fragmentation

Physiological ramifications of habitat selection in territorial male ovenbirds: consequences of landscape fragmentation

Changes of haematological parameters in common pheasant throughout the year

Changes in selected haematological and biochemical parameters in debeaked pheasant hens during the laying period

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