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Performance, digestibility and morphometry of ileal villi of rabbits fed with levels of inclusion of “Lithothamnium” Desempenho, digestibilidade e morfometria da vilosidade ileal de coelhos alimentados com diferentes níveis de inclusão de “Lithothamnium”

Content Partner: Directory of Open Access Journals. In order to evaluate the potential of seaweed meal (Lithothamnium sp) in the nutrition of rabbits it were realized analysis of the presence of trace elements in the composition of Lithothamnium, a performance test with determination of apparent dig...

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Main Authors: Roberto Maurício Carvalho Guedes, Ângela Maria Quintão Lana, Edgar de Alencar Teixeira, Walter Motta Ferreira, Ana Carolina Castro Euler, Artur Canella Avelar
Format: Article
Language:English
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Summary:Content Partner: Directory of Open Access Journals. In order to evaluate the potential of seaweed meal (Lithothamnium sp) in the nutrition of rabbits it were realized analysis of the presence of trace elements in the composition of Lithothamnium, a performance test with determination of apparent digestibility coefficients for dry matter, protein and energy and morphometric analysis of the ileal villi of rabbits fed with diets at different levels of inclusion (0.25%, 0.50%, 0.75% and 1.00%). We used 60 New Zealand White rabbits of both sexes, at 30 days of age.The experimental diets were isonitrogenous and isocaloric, a control and the other with the different levels of inclusion of Lithothamnium sp. to replace the inert (bentonite) from the control diet ad libitum. The experimental design was completely randomized, with five treatments and twelve repetitions. The variables were subjected to analysis of variance and regression analysis model with pre-defined by the statistical program SAEG. The results showed that the inclusion of Lithothamnium sp. in different concentrations did not interfere in the variables studied: intake, digestibility coefficients of dry matter, protein and energy, weight gain, carcass yield and weight of edible offal. However, it was verified that the level of inclusion of 1.0% interfere in a negative way in the length and width of villi.Com o intuito de avaliar o potencial da farinha de algas marinhas (Lithothamnium sp) na nutrição de coelhos, realizaram-se análises de presença de elementos traço na composição do Lithothamnium, um ensaio de desempenho com determinação dos coeficientes de digestibilidade aparente para matéria seca, proteína e energia e análise morfométrica da vilosidade ileal de coelhos alimentados com dietas de diferentes níveis de inclusão (0,25%; 0,50%; 0,75% e 1,00%). Foram utilizados 60 coelhos Nova Zelândia Branco, de ambos os sexos, com 30 dias de idade. As dietas experimentais foram isoproteicas e isoenergéticas, uma controle e as demais com os diferentes níveis de inclusão de Lithothamnium sp em substituição ao inerte (bentonita) de dietas controle fornecidas ad libitum. O delineamento experimental para os ensaios de desempenho e digestibilidade foi inteiramente ao acaso, com cinco tratamentos e doze repetições. Para avaliação da morfometria da vilosidade ileal foram considerados apenas 20 animais distribuídos em um delineamento inteiramente ao acaso com cinco tratamentos e quatro repetições. As variáveis av