Growth of long bones in European and Japanese quail from the 13th day of incubation to day 35 post-hatch.

This study described the growth, morphometric, biomechanical, and chemical properties of the femur, tibiotarsus, and tarsometatarsus of European and Japanese quail. Analyses were performed at 13 and 15 days of incubation, at hatch, and at 4, 7, 10, 14, 21, 28, and 35 days post-hatch (n=6/subspecies/period). Bone specimens were analyzed by cone-beam computed tomography, biomechanical assays, chemical analyses, and histomorphometry. Variables were fitted by the Gompertz function and its derivative or assessed using the analysis of variance. Analysis of the derivative of Gompertz curves showed that the growth behavior of the tarsometatarsal bone was similar between quail subspecies, and the femur and tibiotarsus of European quail increased first in width and then in length, whereas the opposite occurred in Japanese quail. There was an interaction between quail subspecies and days of growth on femoral, tarsometatarsal, and tibiotarsal bone densities. Femoral and tibiotarsal cross-sectional areas were influenced by the interaction of quail subspecies and day of growth. Interaction effects were significant for breaking strength and phosphorus percentage. European and Japanese quail have different femoral and tibiotarsal growth patterns, especially in the first few days after hatching, whereas tarsometatarsal growth is similar between subspecies.

Growth of breast muscles in European and Japanese quail raised in meat production system: a morphological analysis.

Growth curves have been described in the quail but with no attention to the muscle composing of the breast. The description of the characteristics of growth curves to body weight and to breast muscle was the aim of this study. Morphological development of Musculus supracoracoideus and Musculus pectoralis in European and Japanese quail was assessed from the final incubation of to 35 days. Gompertz models were adjusted with maximum growth rates to body weight, breast weight, and Musculus pectoralis and supracoracoideus weight at 17.6; 22.2; 23.5, and 21.4 days. The European quail had a higher body and breast weight at maturity. Musculus supracoracoideus developed faster in both subspecies but with larger Musculus pectoralis. Both musculus had a greater number of fibers type IIA and largest fibers IIB, with quadratically increasing in fiber diameter with age in both subspecies and muscles. At 35 days, results of meat quality indicated similarity between genders and subspecies, with darker and redness breast meat in Japanese quail. In conclusion, breast weight gain was a result of type IIA and IIB fiber hypertrophy in both muscles and, despite the difference in size and aptitude, Japanese and European quail showed similar body and muscle growth patterns.

Fratura de fêmur distal Salter-Harris tipo II por mecanismo de hiperextensão do membro inferior em atleta: relato de caso / Salter-Harris type II distal femur fracture by hyperextension mechanism of lower limb in athlete: case report

Apresentamos um caso de um adolescente de 14 anos, atleta da categoria sub-15 de um clube de futebol do Brasil, com diagnóstico de fratura de fêmur distal Salter-Harris tipo II por um mecanismo de hiperextensão do membro inferior. Foi optado por tratamento conservador com uso de órtese para imobilização e muletas para deambulação. O acompanhamento foi feito com 7, 21, 56 e 86 dias de evolução com o auxílio de tomografia computadorizada, ressonância magnética e radiografia simples de joelho. O atleta não apresentou nenhum sintoma ou incapacidade após os 90 dias de acompanhamento, mas foi verificada uma epifisiodese no exame de imagem. Apesar de ser uma fratura da placa de crescimento femoral distal comum em adolescentes entre 11 e 14 anos de idade por trauma direto ou por angulação do fêmur distal por um pé fixo ao solo que é golpeado pelo lado por outro individuo, não há relatos de fratura Salter-Harris tipo II por mecanismo de hiperextensão do membro inferior na literatura

We report a case of a 14-year-old athlete in the U-15 category of a soccer club in Brazil with a diagnosis of Salter-Harris type II distal femur fracture due to a hyperextension mechanism of the lower limb. Conservative treatment with bracing and crutches for ambulation was used. Follow-up was performed with 7, 21, 56 and 86 days of evolution with the aid of computed tomography, magnetic resonance and simple knee radiography. The athlete did not present any symptoms or disability after the 90 days of follow-up, but an epiphysiodesis was verified in the image exam. Despite being a common distal femoral growth plate fracture in adolescents between 11 and 14 years-old due to direct trauma or distal femur angulation by a foot fixed to the ground that is struck by the side by another individual, there are no reports of fracture Salter-Harris type II by mechanism of hyperextension of the lower limb in the literature