Efeito do sistema de manejo sob o comportamento em pastejo de cabras leiteiras.

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Author(s): CAVALCANTE, A. C. R.; BOMFIM, M. A. D.; BARBOSA, G. N. F.; PINHEIRO, M. M. M.

Summary: O experimento foi conduzido na Embrapa Caprinos para avaliar o efeito do pastejo restrito (8 às 16 horas)e do pastejo em período integral sobre o comportamento em pastejo de caprinos leiteiros. Foram utilizadas cabras das raças Saanen e Anglo-nubiana. As variáveis analisadas foram os tempos de pastejo, de ruminação, em ócio e de permanência no sol e na sombra. O delineamento experimental foi inteiramente casualizado, em esquema fatorial 2 x 2 (dois tipos de manejo e duas raças), com cinco repetições. O manejo e a raça influenciaram o tempo de permanência na sombra. As cabras submetidas ao pastejo integral passaram menos tempo na sombra do que as cabras em pastejo restrito. As cabras Saanen permaneceram 24% mais tempo na sombra que das cabras Anglonubianas (p<0,05). Não houve efeito significatico de manejo sobre os tempos de ruminação e ócio. As cabras mantidas 24 horas no pasto apresentaram 3,5 horas a mais de pastejo do que as cabras em pastejo restrito, possivelmente afetando de forma positiva o consumo e a produção de leite. Effect of managment systems on grazing behaviour in dairy goats. Abstract: The experiment was carried out at Embrapa Caprinos to evaluate the effect of restricted grazing (8-16hrs) and integral grazing period on grazing behaviour in dairy goats. Saanen and Anglo-nubian goats were used. The variables analized were grazing time, rumination time, idleness time and time under sun and time under natural shade. The experimental design was completely randomized in a 2 x 2 arrangment (managments and breeds), with five replications.The managment systems is affected the time of grazing under natural shade (p<0,05). The goats on restricted grazing spent more time on share than goat on integral grazing. The Saanen goats stayed 24% more time under natural shade than Anglo-nubian goats (p <0,05).The managment systems didn't effect the rumination and ideleness time. It was founf effect of managment systems under grazing time (p<0,05). The percentage of time spent grazing was 3,5 hour more on integral grazing than on restricted grazing (p<0,05).The increase in grazing time under integral grazing had a positive affect on intake and milk production.

Publication year: 2005

Types of publication: Paper in annals and proceedings

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