Packed cell volume of blood from male domestic chicks

Rb, Williams

doi:10.1080/00071668608416906

Cited by 5 publications

(4 citation statements)

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“…In birds that did not succumb, this colour disappeared from the droppings when the parasitaemia became negative and the haematocrit value simultaneously returned to normal. The normal haematocrit values in healthy young male birds of those breeds used here ranged from 25% to 32% (Williams, 1986a), rather more limited than that recorded for adult fowl by Freeman (1971a) of 20% to 40%, and unexpectedly falling within the range of 20% to 30% given for female chickens (Freeman, 1984) */ while being quite distinct from the range of 40% to 45% of males (Freeman, 1984). The difference may be due to an age factor.…”

Section: Discussionmentioning

confidence: 89%

“…For comparative purposes, a further 34 healthy control chickens of the same breeds and ages were kept under the same conditions, but they were not infected. Based on the results obtained from the uninfected controls, the normal haematocrit range was judged to be from 25% to 32% (Williams, 1986a). Nevertheless, 5% of single haematocrit readings from healthy chickens might be expected to fall outside that range.…”

Section: Resultsmentioning

confidence: 99%

“…Malarial infections were produced by injection into a jugular vein of each experimental bird of one million parasitized erythrocytes (taken directly from donor birds) suspended in 0.1 ml physiological saline. A standardized procedure described by Williams (1986a) was used for obtaining erythrocyte haematocrit values. Parasitaemias were assessed by the examination of Giemsa-stained blood smears; the results are shown as percentages of erythrocytes infected, rounded off to the nearest integer.…”

Section: Methodsmentioning

confidence: 99%

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Avian malaria: clinical and chemical pathology ofPlasmodium gallinaceumin the domesticated fowlGallus gallus

Rb¹

2005

Avian Pathology

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Data on the effects of Plasmodium gallinaceum on domesticated fowl are sparse, justifying a full investigation of its pathology. Clinical signs following blood-induced infections with the Wellcome line of strain 8A included depression, fever, anorexia, reduced weight gain, poor feed conversion, anaemia, green faeces and often death. After administration of 10 6 erythrocytic parasites, mortality 5 to 10 days after infection was 10% to 93% in chickens 7 to 84 days old. The older the birds, the lower the mortality and the longer the time to death. Onset of detectable parasitaemia occurred mostly during the second day after infection (59% of birds). Peak parasitaemia ( Â/70%) occurred on the sixth day in 85% of surviving birds. The patent period was usually 7 to 19 days. Abnormally low haematocrit values of 5/24% and high colonic temperatures of ]/428C were recorded. A febrile response is demonstrated conclusively here in P. gallinaceum malaria for the first time. Weight gain of malarious birds was reduced by Â/18% to 51%, and feed conversion efficiency was often reduced by Â/12% to 41%. Growth reduction was due entirely to anorexia. Liver weight relative to body weight (normally Â/2% to 3%) increased to Â/4.5% by 8 days, and relative spleen weight (normally Â/0.2%) increased to 1.6% by 12 days. Specific gravities of livers and spleens in healthy and infected birds were Â/1.09. Gall bladder volume in malarious birds 8 days after infection was approximately four times that of normal birds. Statistically significant changes occurred in the proportions of plasma proteins in malarious birds 8 days after infection; albumin and a 2 -globulin were reduced, while g 1 -globulin and g 2 -globulin were increased. Those changes coincided with significant increases in concentrations of plasma total protein and the enzymes aspartate aminotransferase, glutamate dehydrogenase and g-glutamyltransferase, and a decrease in creatinine. Green (biliverdin) colouration of the faeces was a consistent sign of malaria. Birds acquired non-sterile immunity after a single primary infection. The quantitative data presented facilitate selection of the most useful criteria for field diagnosis, estimation of potential economic losses, and assessment of potential avian antimalarial drugs.

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Section: Discussionmentioning

confidence: 89%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Avian malaria: clinical and chemical pathology ofPlasmodium gallinaceumin the domesticated fowlGallus gallus

Rb¹

2005

Avian Pathology

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“…Javed (Javed 2003) reported that hematological parameters studied there is no significant differences between treatment and control groups in hemoglobin concentration and total erythrocyte count. Williams (Williams 1986) carried out an experiment in 34 male domestic chicks of 21 days old to study packed cell volume. He found that the mean packed cell volume was 28.7 percent with range from 23 to 39 percent.…”

Section: Effects On Hematological Parametersmentioning

confidence: 99%

Effects of selected vitamins and minerals on growth rate and hematological parameters in broilers

Rashid¹,

Ahmad²,

Amin³

et al. 2016

Asian J. Med. Biol. Res

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Abstract:The present study was designed with a view to study the body weight and hematological parameters; total erythrocyte count, haemoglobin concentration, packed cell volume and erythrocyte sedimentation rate of growing broilers fed with standard poultry ration. Broilers were kept under close observation for a period of 14 days and body weight was measured at each 7 days interval up to the end of the 35 days of experimental period. A total of 20 (7 days old) broiler chicks were reared throughout the entire period of study. These chicks were randomly divided into four equal groups (n=5). Group A considered as control, fed only standard ration. Group B, C and D was considered as treated group. Group B with vitamin AD 3 E 1 ml/5 liter drinking water. Group C treated with mineral 1 ml/5 liter dirking water and Group D treated with vitamin (AD 3 E) 1 ml/5liter and mineral 1 ml/5 liter dirking water with standard ration. It was observed that body weight of broiler increased significantly (p<0.01) in group D compare to group A, B, & C. Total erythrocyte count, haemoglobin concentration and erythrocyte sedimentation rate values were significant (p<0.01) in the treated groups as compared to that of control group A. So it is concluded that vitamin (AD 3 E) and mineral supplementation with standard ration is beneficial for broiler production and economically profitable.

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The efficacy of a mixture of trimethoprim and sulphaquinoxaline against Plasmodium gallinaceum malaria in the domesticated fowl Gallus gallus

Williams¹

2005

Veterinary Parasitology

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Packed cell volume of blood from male domestic chicks

Cited by 5 publications

References 1 publication

Avian malaria: clinical and chemical pathology ofPlasmodium gallinaceumin the domesticated fowlGallus gallus

Avian malaria: clinical and chemical pathology ofPlasmodium gallinaceumin the domesticated fowlGallus gallus

Effects of selected vitamins and minerals on growth rate and hematological parameters in broilers

The efficacy of a mixture of trimethoprim and sulphaquinoxaline against Plasmodium gallinaceum malaria in the domesticated fowl Gallus gallus

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