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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

NÃveis de cloro para codornas japonesas (Coturnix coturnix japonica) nas fases de crescimento e produÃÃo / Chlorine levels for Japanese quails (Coturnix coturnix japonica) during the growing and production

Roseane Madeira Bezerra 05 February 2010 (has links)
CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior / Com o objetivo de avaliar os efeitos dos nÃveis de cloro da raÃÃo nas fases de crescimento e produÃÃo de codornas japonesas foram realizados dois experimentos, nos quais, foram avaliados os nÃveis de 0,07; 0,12; 0,17; 0,22; 0,27 e 0,32% de cloro. No primeiro experimento (fase de crescimento), 384 codornas com um dia de idade distribuÃdas em um delineamento inteiramente casualizado, com seis tratamentos de oito repetiÃÃes de oito aves cada. Conforme os resultados, no perÃodo de 1 a 42 dias, com o acrÃscimo do nÃvel de cloro na raÃÃo houve aumento linear no consumo de raÃÃo (g/ave) e no ganho de peso (g/ave) e reduÃÃo linear na relaÃÃo consumo de Ãgua/consumo de raÃÃo e na umidade das excretas. Entretanto, a conversÃo alimentar (g/g), a ingestÃo de Ãgua (ml/ave/dia), os coeficientes de digestibilidade da matÃria seca (CDMS), do nitrogÃnio (CDN) e da energia bruta (CDEB) e os valores de energia metabolizÃvel aparente (EMA) e aparente corrigida para nitrogÃnio (EMAn) das raÃÃes nÃo foram influenciados pelo nÃvel de cloro Ainda nesse ensaio, observou-se que os nÃveis de cloro recebido pelas codornas na fase de crescimento nÃo afetaram significativamente o desempenho da fase de postura. No segundo experimento, 288 codornas com dezessete semanas de idade foram distribuÃdas em um delineamento inteiramente casualizado, com seis tratamentos, oito repetiÃÃes e seis aves por unidade experimental. Os nÃveis de cloro nÃo influenciaram significativamente o consumo de raÃÃo (g/ave/dia), o consumo de Ãgua (ml/ave/dia), a percentagem de postura (%), o peso do ovo (g), a massa de ovo (g/ave/dia), a conversÃo alimentar (g/g), a umidade das excretas, os coeficientes de digestibilidade da matÃria seca (CDMS), nitrogÃnio (CDN) e energia bruta (CDEB), os valores de energia metabolizÃvel aparente (EMA) e aparente corrigida (EMAn), as Unidades Haugh, as percentagens de albÃmen, gema e casca. Entretanto, a gravidade especÃfica aumentou linearmente com o acrÃscimo de cloro na raÃÃo. Considerando os resultados, podese recomendar que as raÃÃes para codornas japonesas na fase de crescimento (1 a 42 dias) e de produÃÃo formuladas com milho e farelo de soja podem conter nÃveis de cloro de atà 0,32% sem prejuÃzo para os parÃmetros de desempenho e qualidade dos ovos. / In order to evaluate the effects of chlorine levels in the diet of growing and production of Japanese quails were conducted two experiments in which we assessed the levels of 0.07, 0.12, 0.17, 0.22, 0.27 and 0.32% chlorine. In the first experiment (growing phase), 384 quail on a day-old distributed in a completely randomized design with six treatments of eight replicates of eight birds each. According to the results for the period from 1 to 42 days, with the addition of chlorine level in the diet linearly increased feed intake (g/bird) and weight gain (g/bird) and a linear decrease in the ratio of consumption water/feed intake and excreta moisture. However, feed conversion (g/g), water intake (ml/bird/day), the digestibility of dry matter (CDMS), nitrogen (CDN) and gross energy (GEDC) and the values of metabolizable energy (AME) and apparent nitrogen corrected (AME) of feed were not affected by the level of chlorine still in testing, we found that chlorine levels received by the quails in the growing phase did not significantly affect the performance of phase posture. In the second experiment, 288 quail with seventeen weeks of age were distributed in a completely randomized design with six treatments, eight replicates and six birds per experimental unit. Chlorine levels did not significantly influence feed intake (g/bird/day), water consumption (ml/bird/day), the percentage of stance (%), egg weight (g), the mass of egg (g/bird/day), feed conversion (g/g), the moisture of excreta, the digestibility of dry matter (CDMS), nitrogen (CDN) and gross energy (GEDC), the metabolizable energy apparent (AME) and corrected apparent (AME), Haugh Units, the percentages of albumen, yolk and shell. However, the specific gravity increased linearly with the addition of chlorine in the feed. Considering the results, we can recommend diets for Japanese quails in the growing phase (1 to 42 days) and production made with corn and soybean meal can contain chlorine levels up to 0.32% subject to the parameters performance and egg quality

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