RESUMO
This study aimed at proposing a new technical criteria for condemnation of turkey carcasses due to fowlpox in turkeys as a contribution for the work of the Brazilian Federal Meat Inspection Service. Skin samples from 30 carcasses of a flock of 840 turkeys (Meleagris gallopavo), previously vaccinated for fowlpox and slaughtered in June 2013, were collected. Samples were submitted to histological examination under light microscopy. The virus was identified using standard PCR techniques. The main histological findings were hyperplasia and hydropic degeneration of the epithelium and the presence of intracytoplasmic eosinophilic inclusion bodies. PCR results yielded 83.3% positive and 16.7% negative samples. Fowlpox virus is species specific, and there are no reports of its occurrence in mammals. The macroscopic and microscopic findings of the skin lesions do not justify the total condemnation of carcasses of poultry affected with fowlpox, except in cases of cachexia or repulsive appearance, as established by SIF regulation.
Assuntos
Animais , Perus/anormalidades , Perus/classificação , Varíola Aviária , Reação em Cadeia da Polimerase/veterináriaRESUMO
This study aimed at proposing a new technical criteria for condemnation of turkey carcasses due to fowlpox in turkeys as a contribution for the work of the Brazilian Federal Meat Inspection Service. Skin samples from 30 carcasses of a flock of 840 turkeys (Meleagris gallopavo), previously vaccinated for fowlpox and slaughtered in June 2013, were collected. Samples were submitted to histological examination under light microscopy. The virus was identified using standard PCR techniques. The main histological findings were hyperplasia and hydropic degeneration of the epithelium and the presence of intracytoplasmic eosinophilic inclusion bodies. PCR results yielded 83.3% positive and 16.7% negative samples. Fowlpox virus is species specific, and there are no reports of its occurrence in mammals. The macroscopic and microscopic findings of the skin lesions do not justify the total condemnation of carcasses of poultry affected with fowlpox, except in cases of cachexia or repulsive appearance, as established by SIF regulation. (AU)
Assuntos
Animais , Varíola Aviária , Perus/anormalidades , Perus/classificação , Reação em Cadeia da Polimerase/veterináriaRESUMO
As paratireóides são glândulas derivadas da terceira e da quarta bolsas faringeanas, paratireóides externas e internas, respectivamente, podendo as paratireóides internas serem inexistentes nas aves ou estarem dentro, sobre ou próximas à glândula tireóide. O desequilíbrio destas glândulas é de extrema importância para a fisiologia das aves com a produção do paratormônio afetando economicamente a avicultura industrial, e assim, fazendo crescer os investimentos em pesquisas científicas nesta área. Por meio deste estudo, foi caracterizada a evolução morfológica da glândula paratireóide nas diferentes etapas de vida das aves de corte (Gallus gallus). Foram estudadas 60 aves durante 6 semanas. A cada semana foram submetidas à eutanásia 10 aves (5 machos e 5 fêmeas) e delas retirado em bloco, estruturas de ambos os lados da região cervical, próximo ao esôfago e à traquéia. Das estruturas coletadas, foram confeccionadas lâminas histológicas a fim de encontrar e analisar microscopicamente as glândulas paratireóides, uma vez que não são encontradas macroscopicamente. A análise histológica demonstrou que o parênquima da glândula paratireóide já possui um padrão bem definido a partir do 1º dia de vida da ave com a presença de células principais escuras (ativas) e de células principais claras (inativas), embora possua um menor número de células secretoras que aumenta com a idade. Estes achados demonstram que a glândula já é capaz de produzir o paratormônio deste o início da vida da ave.(AU)
The parathyroid are glands derived from the third and fourty pharyngeal bursa, external and internal parathyroid, respectively. The internal parathyroid might be non-existent in fowls or be inside, over or near the thyroid gland. The unbalance of this glands is of utmost importance for the fowls physiology with the production of the parathormone attacking the industrial aviculture economically, and therefore, expanding the investiments in scientifi c researches in this fi eld. By this means, the morphological evolution of the parathyroid gland was characterized in the various stages of life in battery fowls (Gallus gallus). During 6 weeks, 60 fowls were examined. Every week 10 folws (5 male and 5 female) were put into euthanasia and structures of both sides of the cervical region near the esophagus and the trachea were removed in blocks. From the collected structures, histological laminas were prepared in order to fi nd and anlyze the parathyroid glands microscopically. The histological analysis showed that the parenchyma of the parathyroid gland has already got a sharp-cut pattern from the fowls 1st day of living with the presence of main dark cells (active) and main light cells (inactive), although it owns a minor number of secretory cells which increases with the age. These fi ndings show that the gland is already able to produce the parathormone since the beginning of the fowls life.(AU)
Las glándulas paratiroides son derivadas de la tercera y cuarta bolsas faríngeas, correspondiendo a paratiroides externas e internas, respectivamente. En las aves, las paratiroides internas pueden ser inexistentes o estar dentro, sobre o junto a la glándula tiroides. El desequilibrio de esta glándula es de extrema importancia para la fi siología aviar con la producción de la paratohormona afectando económicamente la avicultura industrial y así aumentando la inversión en investigación científi ca en esta área. Por medio de esta, fue caracterizada la evolución morfológica da la paratiroides en las diferentes etapas de vida de aves de corte. Fueron estudiadas 60 aves durante seis semanas. Semanalmente fueron realizadas eutanasias de 10 aves (5 machos y 5 hembras), siendo retirado un bloque de estructuras en ambos lados de la región cervical junto al esófago y tráquea. De las estructuras retiradas, fueron realizadas láminas histológicas con el objetivo de encontrar y analizar microscópicamente las glándulas paratiroides, ya que no son encontradas microscópicamente. La evaluación histológica demostró que aunque el parénquima de la glándula paratiroides posea menor número de células secretoras que aumentan con la edad. Esta posee padrón defi nido a partir del primer día de vida del ave, presentando células principales oscuras (activas) e células principales claras (inactivas). Estos hallazgos demuestran que la glándula es capaz de producir paratohormona desde el inicio de vida del ave.(AU)
Assuntos
Animais , Masculino , Feminino , Glândulas Paratireoides/anatomia & histologia , Glândulas Paratireoides/fisiologia , GalinhasRESUMO
As paratireóides são glândulas derivadas da terceira e da quarta bolsas faringeanas, paratireóides externas e internas, respectivamente, podendo as paratireóides internas serem inexistentes nas aves ou estarem dentro, sobre ou próximas à glândula tireóide. O desequilíbrio destas glândulas é de extrema importância para a fisiologia das aves com a produção do paratormônio afetando economicamente a avicultura industrial, e assim, fazendo crescer os investimentos em pesquisas científicas nesta área. Por meio deste estudo, foi caracterizada a evolução morfológica da glândula paratireóide nas diferentes etapas de vida das aves de corte (Gallus gallus). Foram estudadas 60 aves durante 6 semanas. A cada semana foram submetidas à eutanásia 10 aves (5 machos e 5 fêmeas) e delas retirado em bloco, estruturas de ambos os lados da região cervical, próximo ao esôfago e à traquéia. Das estruturas coletadas, foram confeccionadas lâminas histológicas a fim de encontrar e analisar microscopicamente as glândulas paratireóides, uma vez que não são encontradas macroscopicamente. A análise histológica demonstrou que o parênquima da glândula paratireóide já possui um padrão bem definido a partir do 1º dia de vida da ave com a presença de células principais escuras (ativas) e de células principais claras (inativas), embora possua um menor número de células secretoras que aumenta com a idade. Estes achados demonstram que a glândula já é capaz de produzir o paratormônio deste o início da vida da ave.
The parathyroid are glands derived from the third and fourty pharyngeal bursa, external and internal parathyroid, respectively. The internal parathyroid might be non-existent in fowls or be inside, over or near the thyroid gland. The unbalance of this glands is of utmost importance for the fowls physiology with the production of the parathormone attacking the industrial aviculture economically, and therefore, expanding the investiments in scientifi c researches in this fi eld. By this means, the morphological evolution of the parathyroid gland was characterized in the various stages of life in battery fowls (Gallus gallus). During 6 weeks, 60 fowls were examined. Every week 10 folws (5 male and 5 female) were put into euthanasia and structures of both sides of the cervical region near the esophagus and the trachea were removed in blocks. From the collected structures, histological laminas were prepared in order to fi nd and anlyze the parathyroid glands microscopically. The histological analysis showed that the parenchyma of the parathyroid gland has already got a sharp-cut pattern from the fowl's 1st day of living with the presence of main dark cells (active) and main light cells (inactive), although it owns a minor number of secretory cells which increases with the age. These fi ndings show that the gland is already able to produce the parathormone since the beginning of the fowl's life.
Las glándulas paratiroides son derivadas de la tercera y cuarta bolsas faríngeas, correspondiendo a paratiroides externas e internas, respectivamente. En las aves, las paratiroides internas pueden ser inexistentes o estar dentro, sobre o junto a la glándula tiroides. El desequilibrio de esta glándula es de extrema importancia para la fi siología aviar con la producción de la paratohormona afectando económicamente la avicultura industrial y así aumentando la inversión en investigación científi ca en esta área. Por medio de esta, fue caracterizada la evolución morfológica da la paratiroides en las diferentes etapas de vida de aves de corte. Fueron estudiadas 60 aves durante seis semanas. Semanalmente fueron realizadas eutanasias de 10 aves (5 machos y 5 hembras), siendo retirado un bloque de estructuras en ambos lados de la región cervical junto al esófago y tráquea. De las estructuras retiradas, fueron realizadas láminas histológicas con el objetivo de encontrar y analizarmicroscópicamente las glándulas paratiroides, ya que no son encontradas microscópicamente. La evaluación histológica demostró que aunque el parénquima de la glándula paratiroides posea menor número de células secretoras que aumentan con la edad. Esta posee padrón defi nido a partir del primer día de vida del ave, presentando células principales oscuras (activas) e células principales claras (inactivas). Estos hallazgos demuestran que la glándula es capaz de producir paratohormona desde el inicio de vida del ave.
Assuntos
Animais , Masculino , Feminino , Galinhas , Glândulas Paratireoides/anatomia & histologia , Glândulas Paratireoides/fisiologiaRESUMO
Myxosarcoma is an unusual neoplasm in the dog, most seen in the skin, and seldom in the heart and in the liver. The authors describe a case of a 5-years old mongrel dog showing abdominal distension, weakness, and decreased appetite. An exploratory celiotomy showed a massive non-encapsulated nodular tumour, adhered on the mesentery, measuring 30cm in diameter. Histopatology identified the tumour as a myxosarcoma. There is not previous record of mesenteric myxosarcoma
Assuntos
Animais , Cães , Mesentério , MixossarcomaRESUMO
Myxosarcoma is an unusual neoplasm in the dog, most seen in the skin, and seldom in the heart and in the liver. The authors describe a case of a 5-years old mongrel dog showing abdominal distension, weakness, and decreased appetite. An exploratory celiotomy showed a massive non-encapsulated nodular tumour, adhered on the mesentery, measuring 30cm in diameter. Histopatology identified the tumour as a myxosarcoma. There is not previous record of mesenteric myxosarcoma.
RESUMO
The occurrence of coligranulomatosis in a Brazilian flock of 1500 8-to-12-month-old coturnix quail is described. The disease caused an 85% drop in egg production and 15% mortality. Lesions were located on the mesentery, intestines, gizzard, heart, oviducts, ovaries, and liver. Samples of these organs were submitted for bacteriological culture, isolation, identification, pathogenicity assay by inoculation of diluted cultures into healthy hens, and histopathology.