Development of an animal model to evaluate oro-sensorial preferences in weaned calves and determinating preferences for energetic ingredients | Desarrollo de un modelo animal para evaluar las preferencias orosensoriales en terneras destetadas y su aplicación para determinar preferencias entre ingredientes energéticos
2009
Montoro, C., Institut de Recerca i Tecnologia Agroalimentàries, Caldes de Montbui, Barcelona (España). Remugants | Boe, F., Institut de Recerca i Tecnologia Agroalimentàries, Caldes de Montbui, Barcelona (España). Remugants | Ipharraguerre, I. | Bach, A., Institut de Recerca i Tecnologia Agroalimentàries, Caldes de Montbui, Barcelona (España). Remugants
The purpose of this study was to develop an animal model to evaluate oro-sensorial preferences in weaned calves and determine preferences for several common energetic ingredients: barley, corn, corn gluten feed, oats, rice, sorghum, wheat and wheat middlings. Several tests were performed to develop an animal model. First, the feeding pattern of 35 calves (65 +/- 0,7 d of age) was monitored over 24 h every 60 min to define the optimum moment to conduct the assays. Next, an experiment involving another 30 naive calves (65 +/- 0,7 d of age) were used to assess an initial model consisting on offering 2 feeds (control vs. control plus 10% of sugar) to each animal, in 2 separate buckets, and measure intake every 30 min over a 6 h period. Finally, 30 calves (65 +/- 0,9 d of age) were used to evaluate this animal model using a novel feed for the calves. A double choice of ground corn or barley were presented to all calves and feed consumption was registered over 6 h every 30 min. It was concluded that the animal model allowed detecting differences in oro-sensorial preferences when using a minimum of 20 animals per assay. Using this animal model, wheat was the most preferred ingredient in all assays but one (P < 0,05). On the other hand, corn gluten feed was the least preferred ingredient in all assays but one (P < 0,05).
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