Redberry (Juniperus pinchotii Sudw.) and ashe (Juniperus ashei Buchh.) juniper dominate rangelands throughout central Texas. Our objective was to attempt to improve the efficacy of goats as a biological control mechanism for juniper through behavioral training. Conditioning sheep and goats to increase the palatability of chemically defended plants can be a useful tool in brush control. Previous research illustrated that goats can be conditioned to consume more juniper while in individual pens when foraging choices are limited. To test whether this creates a longer-lasting increase in juniper preference, we determined if goats would continue to consume juniper on pasture for one year after being fed juniper in individual pens for 14 d. Female Boer-cross goats (n 5 40) were randomly divided into two treatments: conditioned and naive to juniper. At approximately 12 mo of age, conditioned goats were placed in individual pens and fed redberry juniper 1 h daily for 14 d, while naive goats received only alfalfa pellets to meet maintenance requirements. After the pen-feeding phase of the study, goats were placed in one of four pastures (10 goats ? pasture 21) for 12 mo. Two pastures housed conditioned goats, and two pastures housed naive goats at a moderate stocking rate (1 animal unit ? yr 21 ? 8 ha 21). Bite count surveys were conducted twice per month, while herbaceous standing crop and monoterpene levels were measured once per month. Juniper preference varied monthly; however, conditioned goats consistently ate more (P , 0.05) juniper than naive goats except for April, when the study began, and March, when the study ended. When selection of herbaceous forages decreased, conditioned goats increased selection of juniper, while naive goats increased selection of other palatable shrubs. Seasonal changes of monoterpene levels in juniper had no apparent effect on juniper preference. We contend that feeding juniper at weaning will increase use of the plant in grazing situations. Resumen Juniperus pinchotii Sudw y J. ashei Buchh son dominantes en pastizales naturales del centro de Texas. Nuestro objetivo fue intentar mejorar la eficacia del pastoreo de caprinos como mecanismo de control biológico de Juniperus mediante entrenamiento de comportamiento ingestivo. El condicionamiento de ovejas y cabras para que incrementen la palatabilidad de plantas que contienen defensas químicas podría ser una herramienta útil en el control de especies arbustivas. Trabajos de investigación previos demostraron que se puede condicionar un incremento en el consumo de Juniperus en cabras mantenidas en bretes individuales cuando las opciones de forrajeo son limitadas. A fin de determinar si este protocolo crea un incremento duradero en la preferencia de Juniperus, determinamos si las cabras continuarían consumiendo Juniperus en condiciones de pastoreo durante un añ o luego de haber recibido Juniperus en bretes individuales por 14 días. Hembras cruza Boer (n 5 40) se dividieron al azar en 2 tratamientos, uno condicionado y el otro sin experiencia p...
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