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Publicación Sólo datos Efecto de las anomalías cromosómicas sobre la fertilidad en bovinos(Universidad de los Llanos, 2004-01-01) CORREDOR CAMARGO, E.S; JIMÉNEZ ROBAYO, L.MTitulo en ingles: Effect of chromosomal anomalies on bovine fertility.RESUMEN: Las mutaciones cromosómicas son variaciones en el número o la estructura de los cromosomas normales de una especie, originadas durante el ciclo de división celular pudiendo generarse tanto en el tejido somático como en el germinal. Como consecuencia se produce reducción de la fertilidad o infertilidad en los animales portadores debido a la producción de gametos no funcionales, mortalidad embrionaria, o anomalías en el desarrollo del sistema reproductivo.Este artículo hace una revisión de las mutaciones cromosómicas reportadas con más frecuencia en bovinos destacando su efecto sobre la reproducción de los animales portadores y la transmisión a su descen- dencia.Palabras claves: bovinos, mutaciones cromosómicas, reproducción, fertilidad, freemartinismo, translocación robertsoniana 1/29, aneuploidías.ABSTRACT: Chromosomal abnormalities are variations in the number or the structure of the chromosomes in a species. They originate during the cycle of cellular division in either the somatic or the germinal tissue. Infertiliy or impairtment of reproductive performance in carriers animals due to production of non-functional gametes, embryonic mortality, or anomalies in the development of the reproductive system, are common consequences.This article is a review of the most common chromosomal mutations reported in cattle emphasizing their effects on the reproduction of the carrying animals and the transmission to their offspring.Keywords: Cattle, chromosomal abnormalities, reproduction, fertility, freemartinism, robertsonian translocation 1:29, aneuploidies.Publicación Sólo datos Intraoperative analgesic effects of intratesticular lidocaine in a dog undergoing elective orchiectomy: case report(Universidad de los Llanos, 2016-07-01) Ávila-Rodríguez, Albert; Buriticá-Gaviria, Edwin F.; Echeverry-Bonilla, DiegoA 1-year-old male Cocker Spaniel, weighing 10.5 kg, was referred for elective orchiectomy. An intratesticular injection of lidocaine was performed as a part of multimodal anesthetic protocol that also included: acepromazine, meloxicam, tramadol and ketamine. During the intraoperative period the cardiorespiratory parameters (heart rate, respiratory rate, and mean arterial blood pressure), the intraoperative anesthetic (ketamine) and analgesic (fentanyl) consumption, and the presence of autonomous nociceptive responses were evaluated. Increases of baseline cardiorespiratory parameters above 10% or the presence of autonomous nociceptive responses would be considered as indicative of insufficient analgesic coverage, for which 1 μg/kg IV of fentanyl would be employed. The evaluated cardiorespiratory variables were stable, and no autonomous nociceptive responses were observed. For this reason no additional ketamine boluses nor rescue analgesics were administered. It is suggested that intratesticular lidocaine, as a part of the multimodal analgesic protocol employed, contributed to improve the analgesic coverage during orchiectomy in this dog.