Wyniki wyszukiwania

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Spongious matrix of the tibio-tarsal bone of ostriches [Struthio camelus] - a digital analysis

100%

Charuta A., Majchrzak T., Czerwinski E., Cooper R. G.

Bulletin of the Veterinary Institute in Puławy

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2008

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tom 52

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nr 2

A novel diagnostic method was adapted from studies in horses and humans to postmortal research on ostrich bones. The research made it possible to determine referential values in the method of digital analysis of a radiological image for the tibio-tarsal bone of the ostrich, following exposure to injuries. In the case of a computer-generated analysis of a radiological image, the optimal conditions for taking images were selected, along with their digital record and processing: 0.096 mm/pixel, 256 greyness level (8 bits), and scanning in BMP (a bitmap that is an open format of raster graphics, a block of bytes, which describes an image pixel by pixel). The research was conducted on the rectangular-shaped (160 x 320 points) spongy bone taken about 80 mm below the articular surface near the proximal metaphysis. The research allowed defining parameters of the spongious matrix of the tibio-tarsal bone of healthy 14-month-old ostriches. The average number of trabeculae on lines was 10.41 mm² for both sexes, the average volume was 2.21 %, the density of the trabeculation (the percentage of the surface covered with trabeculae) was 47.44 % for both sexes and the average width of the trabeculae was 0.23 mm. On the basis of the conducted calculations, it is possible to draw a conclusion that the average number of radiological trabeculae, the volume of the trabeculae, and their density do not differ significantly for cocks and hens.

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Computed tomographic and densitometric analysis of tibiotarsal bone mineral density and content in postnatal Peking ducks (Anas platyrhynchos var. domestica) as influenced by age and sex

80%

Charuta A., Cooper R. G.

Polish Journal of Veterinary Sciences

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2012

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tom 15

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nr 3

The bone mineral density BMD and content BMC were analysed in the tibiotarsal bones of ducks in the postnatal development as influenced by age and sex. One hundred birds from the nesting till the slaughtering maturity were included in the experiment. The analysis was conducted using a densitometer, Norland - Excell Plus and pQCT computed tomography, XCT Research SA Plus. The statistical analysis was conducted using the Kruskal-Wallis one-way analysis of variance (age) and the U-Mann -Withney test (sex). All calculations were performed in Statistica 9.0 (StatSoft, Inc. Tulsa, USA), at P ≤ 0.05. Two-factor analysis of variance ANOVA was applied and Pearson’s correlation coefficients were calculated. The densitometer research showed that BMD and BMC increased in the postnatal development for both sexes. The volumetric bone mineral density vBMD analysis using computed tomography showed that volumetric bone mineral density vBMD of the middle of the diaphyses in situ gradually attenuated during the postnatal development both in males and females, i.e. from 620 mg/cm3 (2 wk) to 500 mg/cm3 (8 wk). The biggest vBMD loss was observed in the diaphyses of females in 4 and 6 wk (r = - 0.63 and r = - 0.79; P ≥ 0.05). The BMC decrease was observed in the proximal metaphyses between 4 and 6 wk for both sexes, r = - 0.52 (males), r = - 0.53 (females); P ≤ 0.05. The gradual loss may be the cause of deformities and fractures of the tibiotarsal bones observed from 4 wk in particular bone sections of both sexes. The achieved results may constitute a helpful source of information for water poultry breeders to prevent limb diseases.

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Sex-and age-related changes of trabecular bone of tibia in growing domestic geese (Anser domesticus)

80%

Charuta A., Dzierzecka M., Czerwinski E., Cooper R. G., Horbanczuk J. O.

Folia Biologica

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2012

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tom 60

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nr 3-4

Ograniczanie wyników

1 Bulletin of the Veterinary Institute in Puławy

1 Folia Biologica

1 Polish Journal of Veterinary Sciences

3 Charuta A.

3 Cooper R. G.

2 Czerwinski E.

1 Dzierzecka M.

1 Horbanczuk J. O.

1 Majchrzak T.

2 2012

1 2008

Spongious matrix of the tibio-tarsal bone of ostriches [Struthio camelus] - a digital analysis

Computed tomographic and densitometric analysis of tibiotarsal bone mineral density and content in postnatal Peking ducks (Anas platyrhynchos var. domestica) as influenced by age and sex

Sex-and age-related changes of trabecular bone of tibia in growing domestic geese (Anser domesticus)