Primeira descrição de pseudoparasitismo por esporocistos de Monocystis sp. em tatu-galinha, Dasypus novemcinctus (Linnaeus, 1758) - relato de caso / First description of pseudoparasitism by sporocysts of Monocystis sp. in nine banded armadillo, Dasypus novemcinctus (Linnaeus, 1758) - case report

O presente artigo é um relato sobre uma fêmea de D. novemcinctus que foi capturada de forma imprevista, durante um projeto de avaliação sanitária de animais silvestres sinantrópicos do município de Toledo/PR (autorização Sisbio/Ibama n. 55109-1). Durante a avaliação física, amostras de fezes foram coletadas após defecação espontânea e encaminhadas para análise. O material foi submetido aos métodos de flutuação simples em solução hipersaturada de cloreto de sódio e centrífugo-flutuação em sacarose. Na leitura das lâminas obtidas pelo método de centrífugo-flutuação em sacarose, foram observadas estruturas com comprimento de aproximadamente 10µm, forma bicônica e um tampão em cada extremidade, compatíveis com esporocistos de Monocystis sp. Protozoários do filo Apicomplexa, os Monocystis sp., são geralmente parasitas de anelídeos, como as minhocas. Esse organismo é comumente correlato a pseudoparasitismo em vários animais, porém não foram encontrados relatos de pseudoparasitismo desse agente em tatus-galinhas, logo essa é a primeira descrição de Monocystis sp. em espécime de D. novemcinctus.(AU)

The present article is an account of a female of D. novemcinctus which was captured during a sanitary evaluation project of synanthropic wild animals of the municipality of Toledo/PR (license SISBIO/ICMBIO n°. 55109-1). During a physical evaluation, samples of feces were collected, after spontaneous defecation, and sent for analysis. The material was subjected to simple flotation methods in hypersaturated sodium chloride solution and centrifugal-flotation solutions in sucrose. In a test reading by the centrifugal-flotation method in sucrose, structures with approximately 10µm, biconical shape and one plate at each end were observed, compatible with sporocysts of Monocystis sp. Protozoa of the phylum Apicomplexa, like Monocystis sp., it is common parasitic annelids, such as worms. This organism is a correlate of pseudoparasitism in several animals but was not found to describe this product as an agent in nine banded armadillos, so this is a first description of Monocystis sp. in specimen of D. novemcinctus.(AU)

Primeira descrição de pseudoparasitismo por esporocistos de Monocystis sp. em tatu-galinha, Dasypus novemcinctus (Linnaeus, 1758) - relato de caso / First description of pseudoparasitism by sporocysts of Monocystis sp. in nine banded armadillo, Dasypus novemcinctus (Linnaeus, 1758) - case report

O presente artigo é um relato sobre uma fêmea de D. novemcinctus que foi capturada de forma imprevista, durante um projeto de avaliação sanitária de animais silvestres sinantrópicos do município de Toledo/PR (autorização Sisbio/Ibama n. 55109-1). Durante a avaliação física, amostras de fezes foram coletadas após defecação espontânea e encaminhadas para análise. O material foi submetido aos métodos de flutuação simples em solução hipersaturada de cloreto de sódio e centrífugo-flutuação em sacarose. Na leitura das lâminas obtidas pelo método de centrífugo-flutuação em sacarose, foram observadas estruturas com comprimento de aproximadamente 10µm, forma bicônica e um tampão em cada extremidade, compatíveis com esporocistos de Monocystis sp. Protozoários do filo Apicomplexa, os Monocystis sp., são geralmente parasitas de anelídeos, como as minhocas. Esse organismo é comumente correlato a pseudoparasitismo em vários animais, porém não foram encontrados relatos de pseudoparasitismo desse agente em tatus-galinhas, logo essa é a primeira descrição de Monocystis sp. em espécime de D. novemcinctus.(AU)

The present article is an account of a female of D. novemcinctus which was captured during a sanitary evaluation project of synanthropic wild animals of the municipality of Toledo/PR (license SISBIO/ICMBIO n°. 55109-1). During a physical evaluation, samples of feces were collected, after spontaneous defecation, and sent for analysis. The material was subjected to simple flotation methods in hypersaturated sodium chloride solution and centrifugal-flotation solutions in sucrose. In a test reading by the centrifugal-flotation method in sucrose, structures with approximately 10µm, biconical shape and one plate at each end were observed, compatible with sporocysts of Monocystis sp. Protozoa of the phylum Apicomplexa, like Monocystis sp., it is common parasitic annelids, such as worms. This organism is a correlate of pseudoparasitism in several animals but was not found to describe this product as an agent in nine banded armadillos, so this is a first description of Monocystis sp. in specimen of D. novemcinctus.(AU)

Evaluation of incubation yield, vaccine response, and performance of broilers submitted to in-ovo vaccination at different embryonic ages

The aim of this study was to evaluate the effects of in-ovo vaccination on different incubation days of broiler embryos derived from young and old breeders on incubation indexes, vaccine response, and broiler performance. A number of 20,160 fertile eggs was distributed according to a completely randomized design in a 4 x 2 factorial arrangement (in-ovo vaccination on 16, 17, 18, or 19 days of incubation, and breeders of 31 or 52 weeks of age), totaling eight treatments with 15 replicates of 168 eggs each. Vaccination procedures and vaccines (strains and doses) were those routinely applied in commercial hatcheries. After hatch, 960 male chicks were housed and distributed according to the same experimental design previously applied in the hatchery. There were hatching losses (p < 0.05) when eggs were vaccinated before 18 days of incubation. Greater Marek's disease antibody titers were obtained when the in-ovo vaccination was performed on day 19 of incubation, regardless breeder age. Embryonic age at vaccination did not compromise broiler performance in the field, and the flexibility of embryonic age for in-ovo vaccination can reduces incubation costs.

Evaluation of incubation yield, vaccine response, and performance of broilers submitted to in-ovo vaccination at different embryonic ages

The aim of this study was to evaluate the effects of in-ovo vaccination on different incubation days of broiler embryos derived from young and old breeders on incubation indexes, vaccine response, and broiler performance. A number of 20,160 fertile eggs was distributed according to a completely randomized design in a 4 x 2 factorial arrangement (in-ovo vaccination on 16, 17, 18, or 19 days of incubation, and breeders of 31 or 52 weeks of age), totaling eight treatments with 15 replicates of 168 eggs each. Vaccination procedures and vaccines (strains and doses) were those routinely applied in commercial hatcheries. After hatch, 960 male chicks were housed and distributed according to the same experimental design previously applied in the hatchery. There were hatching losses (p < 0.05) when eggs were vaccinated before 18 days of incubation. Greater Marek's disease antibody titers were obtained when the in-ovo vaccination was performed on day 19 of incubation, regardless breeder age. Embryonic age at vaccination did not compromise broiler performance in the field, and the flexibility of embryonic age for in-ovo vaccination can reduces incubation costs.(AU)