6 research outputs found

    ALTERAÇÕES ENDÓCRINAS EM REPRODUTORES SUÍNOS DE ALTO DESEMPENHO

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    Objetivando descrever o comportamento sexual e reprodutivo de machos suĂ­nos de alto desempenho, submeteram-se os animais a um protocolo de treinamento para colheita de sĂȘmen, a fim de que fossem incorporados ao plantel de reprodutores do Setor de Suinocultura do Departamento de Zootecnia da UFLA. Submeteram-se os animais a mediçÔes de biometria testicular e pesagem para avaliaçÔes de desenvolvimento dos testĂ­culos e ganho de peso diĂĄrio (GPD) durante a fase prĂ©-pĂșbere. ApĂłs o perĂ­odo de treinamento de colheita de sĂȘmen, foram coletadas amostras de sangue para realização de anĂĄlises hormonais de testosterona, estradiol, FSH e LH plasmĂĄticos. Observaram-se diferenças nas concentraçÔes de testosterona e estradiol, nĂșmero mĂ©dio de saltos diĂĄrios sobre o manequim e tempo mĂ©dio de ejaculação. O animal A apresentou um volume de 369,68 mL e 412,67 mL, para o testĂ­culo direito e esquerdo, respectivamente, em mĂ©dia oito saltos diĂĄrios sobre o manequim durante o perĂ­odo de treinamento, e o tempo mĂ©dio de ejaculação foi de 261 segundos. O animal B nĂŁo realizou nenhum salto durante o treinamento e apresentou volume testicular direito de 359,76 mL e esquerdo de 315,10 mL. As dosagens hormonais para o animal A foram de 0,0153 ng/mL e 0,7015 ng/mL para testosterona e estradiol, respectivamente. O animal B apresentou concentração plasmĂĄtica de testosterona de 0,0011 ng/mL e 0,0241 ng/mL de estradiol. As concentraçÔes de FSH e LH foram semelhantes entre os animais, sendo 0,10 mU/mL e 0,10 U/L, respectivamente. Essas diferenças observadas possivelmente determinaram o comportamento sexual diferenciado dos machos durante o perĂ­odo de treinamento e colheita de sĂȘmen. PALAVRAS-CHAVES: Comportamento sexual, hormĂŽnios, libido, varrĂŁo

    Programas de luz sobre o desempenho e parĂąmetros seminais de galos semi-pesados Lightning programs on the performance and seminal parameters of semi-heavy roosters

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    Com o objetivo de avaliar a influĂȘncia de diferentes programas de luz sobre os parĂąmetros seminais de galos de linhagem semi-pesada, foram utilizados 24 galos da linhagem Lohman Brown com idade inicial de 19 semanas, sendo submetidos a trĂȘs tratamentos: 1) programa de luz contĂ­nuo; 2) programa de luz intermitente e 3) programa de luz natural crescente. Os animais foram distribuĂ­dos num delineamento experimental inteiramente casualizado, com oito repetiçÔes, sendo a unidade experimental constituĂ­da de um animal. O perĂ­odo experimental teve duração de 140 dias e as variĂĄveis avaliadas foram: consumo de ração (g ave-1 dia-1); peso corporal (g); produção de sĂȘmen (ml), motilidade (%) e vigor espermĂĄticos (0 a 5), concentração espermĂĄtica (nĂșmero de cĂ©lulas x 10(9)), nĂșmero de cĂ©lulas espermĂĄticas totais (NCT = volume x concentração) e morfologia espermĂĄtica (alteraçÔes de cabeça, cauda e alteraçÔes totais). Os galos submetidos aos programas de luz contĂ­nuo e intermitente apresentaram maior produção de sĂȘmen e maior NCT (P<0,05), nĂŁo havendo influĂȘncia (P>0,05) dos tratamentos sobre as demais variĂĄveis. Conclui-se que os programas de luz contĂ­nuo e intermitente podem ser utilizados para galos semi-pesados durante o perĂ­odo reprodutivo, sem prejudicar o desempenho e os parĂąmetros seminais.<br>This study aimed to evaluate the influence of different lighting programs on the performance and semen parameters of semi-heavy cock strain. Twenty four roosters, aging 19 weeks, of the Lohman Brown strain were used, and submitted to three treatments: 1) continuous lightning programs 2) intermittent lightning programs and 3) increasing natural lightning programs. The animals were distributed into a completely randomized design, with 8 replicates being the experimental unit constituted of 1 animal. The experimental period lasted 140 days and the evaluated variables were: feed intake (g/chicken/day), body weight (g), semen production (ml), motility (%) and vigor (0 to 5) of the sperm, spermatic concentration (cells number x 10(9)), total spermatic cells (NCT- volume x concentration) and spermatic morphology (head, tail and total alterations). The semi-heavy roosters submitted to continuous and intermittent lightning programs presented greater semen production and greater NCT (P<0,05). There was no significant influence (P>0.05) of the treatments on the other variables. It was concluded that the programs of continuous and intermittent light can be used for semi-heavy cocks during the breeding season, without sacrificing performance and sĂȘmen parameters

    Seminårio de Dissertação (2024)

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    Pågina da disciplina de Seminårio de Dissertação (MPPP, UFPE, 2022) Lista de participantes == https://docs.google.com/spreadsheets/d/1mrULe1y04yPxHUBaF50jhaM1OY8QYJ3zva4N4yvm198/edit#gid=

    Evaluation of a quality improvement intervention to reduce anastomotic leak following right colectomy (EAGLE): pragmatic, batched stepped-wedge, cluster-randomized trial in 64 countries

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    Background Anastomotic leak affects 8 per cent of patients after right colectomy with a 10-fold increased risk of postoperative death. The EAGLE study aimed to develop and test whether an international, standardized quality improvement intervention could reduce anastomotic leaks. Methods The internationally intended protocol, iteratively co-developed by a multistage Delphi process, comprised an online educational module introducing risk stratification, an intraoperative checklist, and harmonized surgical techniques. Clusters (hospital teams) were randomized to one of three arms with varied sequences of intervention/data collection by a derived stepped-wedge batch design (at least 18 hospital teams per batch). Patients were blinded to the study allocation. Low- and middle-income country enrolment was encouraged. The primary outcome (assessed by intention to treat) was anastomotic leak rate, and subgroup analyses by module completion (at least 80 per cent of surgeons, high engagement; less than 50 per cent, low engagement) were preplanned. Results A total 355 hospital teams registered, with 332 from 64 countries (39.2 per cent low and middle income) included in the final analysis. The online modules were completed by half of the surgeons (2143 of 4411). The primary analysis included 3039 of the 3268 patients recruited (206 patients had no anastomosis and 23 were lost to follow-up), with anastomotic leaks arising before and after the intervention in 10.1 and 9.6 per cent respectively (adjusted OR 0.87, 95 per cent c.i. 0.59 to 1.30; P = 0.498). The proportion of surgeons completing the educational modules was an influence: the leak rate decreased from 12.2 per cent (61 of 500) before intervention to 5.1 per cent (24 of 473) after intervention in high-engagement centres (adjusted OR 0.36, 0.20 to 0.64; P &lt; 0.001), but this was not observed in low-engagement hospitals (8.3 per cent (59 of 714) and 13.8 per cent (61 of 443) respectively; adjusted OR 2.09, 1.31 to 3.31). Conclusion Completion of globally available digital training by engaged teams can alter anastomotic leak rates. Registration number: NCT04270721 (http://www.clinicaltrials.gov)
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