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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Efeitos de diferentes fontes de cobre e zinco na alimentação de frangos de corte sobre o desempenho, características de carcaça e qualidade óssea

Santos, Tatiane Souza Dos January 2020 (has links)
Orientador: José Roberto Sartori / Resumo: O experimento foi conduzido para investigar os efeitos da suplementação de cobre e zinco nas dietas de frangos de corte, utilizando duas fontes minerais (hidroximineral ou sulfato) no desempenho, rendimento de carcaça e partes, qualidade de carne, concentração mineral nos tecidos e absorção aparente ileal de cobre e zinco, características do tecido ósseo e pele, e indicadores do status de saúde. O total de 1.792 pintainhos machos de um dia da linhagem Cobb 500 foram distribuídos aleatoriamente em oito tratamentos com oito repetições por tratamento. As fontes de hidroximineral utilizadas foram: dois níveis de hidroxicloreto de Cu (CHC) (baixo e alto), combinados com três níveis de hidroxicloreto de Zn (ZHC) (baixo, médio e alto); e dois tratamentos adicionais contendo sulfato, sendo o sulfato de Cu monohidratado (SCM) (baixo e alto) combinado com alto nível de sulfato de Zn monohidratado (SZM). Os tratamentos foram: 15 mg/kg de SCM + 120 mg/kg de SZM; 150 mg/kg de SCM + 120 mg/kg de SZM; 15 mg/kg de CHC + 80 mg/kg de ZHC; 15 mg/kg de CHC + 100 mg/kg de ZHC; 15 mg/kg de CHC + 120 mg/kg de ZHC; 150 mg/kg de CHC + 80 mg/kg de ZHC; 150 mg/kg de CHC + 100 mg/kg de ZHC; 150 mg/kg de CHC + 120 mg/kg de ZHC. As médias foram submetidas à ANOVA, e quando significativas foram comparadas pelos testes de Tukey e Dunnet com 5% de significância. Aos 21 dias de idade, frangos alimentados com dietas contendo alto-CHC apresentaram melhores resultados de peso corporal, ganho de peso, conversão a... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: The experiment was carried out to investigate the effects of copper and zinc supplementation on broiler diets, using two mineral sources (hydroxymineral or sulfate) on performance, carcass and parts yield, meat quality, mineral concentration in tissues and apparent ileal absorption of copper and zinc, bone characteristics and skin tissue, and indicators of health status. The total of 1,792 day-old male chicks of the Cobb 500 strain were randomly assigned to eight treatments with eight replicates per treatment. The hydroximineral sources used were: two levels of Cu hydroxychloride (CHC) (low and high), combined with three levels of Zn hydroxychloride (ZHC) (low, medium and high); and two additional treatments containing sulfate, with Cu sulfate monohydrate (SCM) (low and high) combined with a high level of Zn sulfate monohydrate (SZM). The treatments were: 15 mg/kg of SCM + 120 mg/kg of SZM; 150 mg/kg SCM + 120 mg/kg SZM; 15 mg/kg of CHC + 80 mg/kg of ZHC; 15 mg/kg of CHC + 100 mg/kg of ZHC; 15 mg/kg of CHC + 120 mg/kg of ZHC; 150 mg/kg of CHC + 80 mg/kg of ZHC; 150 mg/kg of CHC + 100 mg/kg of ZHC; 150 mg/kg of CHC + 120 mg/kg of ZHC. The means were submitted to ANOVA, and when significant, they were compared by Tukey’s and Dunnet’s tests with 5% significance. At 21 days of age, chickens fed diets containing highCHC showed better results for body weight, weight gain, feed conversion as compared to those receiving low-CHC. At the end of the experimental period, broilers in the ... (Complete abstract click electronic access below) / Doutor

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