Genetic parameters for cattle's growth characteristics were estimated in Romosinuano creole breed cattle forming part of the Turipaná research centre's conservation program , located in the Valle del Sinú (Córdoba, Colombia). A univariate animal model was used for production characteristics such as birth weight (BW), weaning weight (WW, adjusted at 270 days), 16-month weight (16m W), daily weaning weight gain (DWWG) and daily weight gain at 16 months (DWG16m). Mean heritability values were 0.28, 0.43 and 0.38 for BW, WW, 16m W, respectively. Mean DWWG was 0.42 and 16m W was 0.20. Direct heritability values were always greater than maternal heritability values; correlation between direct and maternal effects consistently presented negative values. Annual mean genetic values for direct effects always presented a growing tendency compared to maternal effects which revealed a decreasing tendency (except for BW). The results presented acceptable heritability values for the aforementioned parameters whilst the tendency indicated slight genetic progress, in spite of being a nucleus for conservation aimed at preserving genetic variability. Parámetros y tendencias genéticas para características de crecimiento en el ganado criollo colombiano Romosinuano R E S U M E N Se estimaron los parámetros genéticos para características de crecimiento en un núcleo de bovinos de la raza criolla Romosinuano que forman parte del Programa de Conservación del Centro de Investigación Turipaná, localizado en el Valle del Sinú (Córdoba, Colombia). Fue utilizado un modelo animal univariado para las características productivas de 'peso al nacimiento' (PN), 'peso al destete' (PD, ajusta-do a los 270 días), 'peso a los 16 meses' (P16m), 'ganancia diaria de peso al destete' (GPD) y 'ganancia diaria de peso a los 16 meses' (GP16m). Se obtuvieron valores de heredabilidad total medios (0,28; 0,43 y 0,38 para PN, PD, P16m, respectivamente); así mismo, se obtuvo un valor medio para GPD (0,42) y un valor bajo para GP16m (0,20). Los valores de heredabilidad directa siempre fueron mayores que los valores de heredabilidad materna y la correlación entre efectos directos y maternos presentó valores negativos consistentemente. Los valores genéticos anuales promedio para los efectos directos presentaron siempre una tendencia creciente a diferencia de los efectos maternos que mostraron una tendencia decreciente, con excepción del PN. Los resultados muestran valores de heredabilidad aceptables para los parámetros mencionados, mientras la tendencia indica un progreso genético leve pese a ser un núcleo de conservación cuyo objeto es preservar la variabilidad genética. Palabras clave: ganado criollo, Romosinuano, parámetros genéticos.

Background and study aims Sleeve gastrectomy (LSG) is the most commonly performed bariatric procedure in the world. Leaks are the most feared complications after this procedure. Endoscopic septotomy has been described as a resolution technique that could be useful in the setting of late and chronic leaks. We present our experience in the management of gastric leaks with this advanced endoscopic technique. Patients and methods Retrospective review of patients who have been admitted to our hospital from January 2016 to December 2018. Results Five patients were found. All had their index surgery in outside hospitals. The average age was 51 years (range 40 – 69), and four patients were female. Mean time from LSG to leak presentation was 15 days (range 7 – 25). Mean time from leak presentation to septotomy procedure was 61 days (range 21 – 110). All patients were treated with sleeve dilatation before septotomy using endoscopic achalasia balloons. Mean procedure time was 79 minutes (range 55 – 125). Success was achieved in 80 % of patients, and no complications related to the procedure were identified. One patient underwent total gastrectomy for definitive management. Mean follow-up time was 14.25 months (range 6 – 26), and the average time for fistula closure was 60.25 days. Conclusion Endoscopic septotomy is safe and effective for management of chronic leaks after LSG. Associated non-selective dilatation may be a crucial step to allow distal patency and axis rectification for appropriate leak closure.

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○ ○ ○ ○ 58 Variabilidad de bovinos criollos colombianos génétique dans le programme de vulgarisation qui sera mené à terme

Morphometric data was collected on 859 naturalized swine in Brazil (Piau, Tatu, Nilo, Caruncho, Casco de Burro, Moura, Monteiro and Rabo de Peixe), Colombia (Criolla Zungo, Sanpedreño and Casco de Mula)