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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

UtilizaÃÃo do farelo de cÃco em dietas para coelhos destinados ao abate / Use of the farelo cÃco in diets for rabbits for the slaughter

Cecilia Aurea Vasconcelos de Haponik 27 February 2007 (has links)
FundaÃÃo Cearense de Apoio ao Desenvolvimento Cientifico e TecnolÃgico / Este experimento foi conduzido com o objetivo de avaliar o efeito da inclusÃo do farelo de cÃco sobre o desempenho de coelhos em regime de engorda. Inicialmente realizou-se um ensaio de digestibilidade do farelo de cÃco, utilizando 18 animais distribuÃdos em um delineamento inteiramente casualizado (DIC), a fim de determinar os coeficientes de digestibilidade dos nutrientes e a energia do alimento em coelhos. O ensaio durou 11 dias, sendo os 4 finais para coletas de fezes. As dietas foram compostas de uma raÃÃo referÃncia e uma raÃÃo teste (30% da raÃÃo referÃncia). Para o ensaio de desempenho foram utilizados 60 coelhos com 43 dias de vida, distribuÃdos em um delineamento inteiramente casualizado com 5 tratamentos, sendo 12 repetiÃÃes por tratamento. O experimento durou 42 dias. Os tratamentos consistiram na inclusÃo de farelo de cÃco nos nÃveis de 0; 6,25; 12,5; 18,75 e 25%. Com as mesmas estruturas e animais deste Ãltimo ensaio, realizou-se um ensaio de digestibilidade das dietas cujo delineamento foi o DIC tendo 5 tratamentos com 3 repetiÃÃes e unidade experimental de 4 coelhos. Esse experimento teve duraÃÃo de 5 dias dos quais foram coletados as fezes. ApÃs as coletas, realizou-se anÃlise bromatolÃgica e determinaÃÃo de ED das fezes. NÃo houve efeito significativo (P>0,05) para as caracterÃsticas de ganho de peso, ganho de peso diÃrio. Houve efeito quadrÃtico (P<0,05) para o consumo total, consumo mÃdio diÃrio e conversÃo alimentar cujos valores mÃximos de inclusÃo de farelo de cÃco sÃo respectivamente: 14,07; 13,92 e 15%. Comparando os resultados obtidos entre as raÃÃes contendo farelo de cÃco e a raÃÃo sem farelo de cÃco, observou-se que o consumo total e o consumo mÃdio de raÃÃo diferenciaram do controle nos nÃveis de 18,75 e 25%. Obteve-se boa digestibilidade da energia bruta e extrato etÃreo nas dietas utilizadas. A mÃdia da energia digestÃvel entre as dietas foi de 2510 ED (kcal/kg), porÃm a digestibilidade da proteÃna bruta apresentou Ãndices baixos cuja mÃdia foi de 65,07%. Assim sendo concluiu-se que o farelo de cÃco na condiÃÃo de alimento alternativo mostrou elevados valores para CDEB, CDPB, CDEE, podendo ser indicado na dieta atà o nÃvel de 25%, notadamente, com relaÃÃo à conversÃo alimentar e Ãs dietas com nÃveis crescentes de farelo de cÃco tem aporte de ED melhorado, entretanto apresenta reduÃÃo no CDPB. / This experiment was carried out with the objective of evaluating the effect of the inclusion of the coconut meal on the performance of rabbits on fattening diet. Initially, an essay of digestibility of coconut meal was made, using 18 animals distributed in a completely randomized design (CRD), in order to determine the digestibility coefficients of the nutrients and the energy of the food in rabbits. The performance lasted 11 days, being the latest 4 days for the excrement collections. The diets were composed of a reference ration and a test ration (30% of the reference ration). For the performance trial, 60 rabbits with 43 days of life had been used, distributed in a completely randomized design with 5 treatments, being 12 replicates for treatment. The experiment lasted 42 days. The treatments had consisted of the inclusion of coconut meal in the levels of 0; 6,25; 12,5; 18,75 and 25%. With the same structures and animals of this last performance, a digestibility trial of the diets whose delineation was the CRD was made, having 5 treatments with 3 replicates and an experimental unit of 4 rabbits. This experiment had duration of 5 days, in which the excrements had been collected. After the collections, the bromatological analysis and the determination of DE of excrements were made. It did not have significant effect (P>0,05) for the characteristics of weight gain, daily weight gain. There was a quadratic effect (P<0,05) for the total consumption, daily average consumption and feed conversion whose maximum values of inclusion of coconut meal are respectively: 14,07; 13,92 and 15%. Comparing the results gotten between the rations with coconut meal and the ration without coconut meal, it was observed that the total consumption and the average consumption of ration had differentiated from the control in the levels of 18,75 and 25%. Good digestibility of the crude energy and ether extract in the used diets was gotten. The average of the digestible energy between the diets was of 2510 DE (kcal/kg), however the digestibility of the crude protein presented low indices whose average was of 65, 07%. This way, it was concluded that the coconut meal in the condition of alternative food showed high values for CDGE, CDCP, CDEE, being able to be indicated in the diet until the 25% level, notably, in relation to food conversion and the diets with increasing levels of coconut meal it has the benefit of improved DE, however it presents reduction in the CDCP.

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