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Esternal morphology and morphometry of canine fetuses of the pinscher breed to 45 days post-coitus Morfologia externa e morfometria de fetos caninos da ra a pinscher aos 45 dias pós-coito

Keywords: Morfologia , Morfometria , Fetos , Pinscher.

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Abstract:

We analyzed the external morphology and morphometric fetal pinscher dog breed at 45 days post-coitus. We used four fetuses, two females and two males from a female pinscher breed with breed registry, with clinically healthy and accompanying pregnancy by blood tests and sonograms. The study was performed at the Embriologia-UFPI/CCS after death due to mechanical trauma suffered by his mother due to car accidents. The morphological characteristics were described and data such as weight, length (total, tail, head, ear and head-tail), crown-rump (CR), perimeter (eye, chest and abdominal) and biparietal diameter were obtained. Fetuses at 45 days showed skin covered by hair, head and members formed and differentiated, and eyes closed. We observed the presence of tactile hairs, philtrum, open nostrils and muffle keratinized. They have five digits in forelimbs and hind four digits with nails formed. Showed sexual dimorphism. The average weight of fetuses was 56.9 ± 15.7 g; the total length of 18 cm ± 0.9, CR 10 cm ± 0.9, head length 4.2 cm ± 0.2, tail length 3.4 cm ± 0, 4; ear length 0.8 cm ± 0.2, length 9.4 cm cephalo-caudal ± 2.1, 0.5 cm perimeter ocular ± 0.1, 8.9 cm girth biparietal diameter and 1.0 ± 3.7 cm ± 0.6. Fetuses pinscher dogs have morphological and morphometric own race and gestational age. Foram analisados aspectos morfológicos externos e morfométricos de fetos caninos da ra a pinscher aos 45 dias pós-coito. Utilizaram-se quatro fetos, duas fêmeas e dois machos de uma fêmea da ra a pinscher, com registro de ra a, clinicamente sadia e com gesta o acompanha por exames laboratoriais e sonogramas. O estudo foi realizado no laboratório de Embriologia-UFPI/CCS, após o óbito por trauma mecanico sofrido pela m e devido a acidente automobilístico. As características morfológicas externas foram descritas e dados como peso, comprimento (total, caudal, cefálico, auricular e céfalo-caudal), crown-rump(CR), perímetro (ocular, torácico e abdominal) e diametro biparietal foram obtidos. Os fetos, aos 45 dias, apresentaram pele coberta por pêlos, cabe a e membros formados e diferenciados, além de olhos fechados. Observou-se presen a de pêlos tácteis, filtro labial, narinas abertas e mufla queratinizada. Possuem membros torácicos com cinco dígitos e pélvicos com quatro dígitos com unhas formadas. Apresentaram dimorfismo sexual. O peso médio dos fetos foi 56,9g±15,7; o comprimento total 18cm±0,9; o CR 10cm±0,9; o comprimento cefálico 4,2cm±0,2; comprimento da cauda 3,4cm±0,4; comprimento auricular 0,8cm±0,2;comprimento céfalo-caudal 9,4cm±2,1; perímetro ocular 0,5c

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