Effect of types of forage on terpenes content and profile in goat milk
2007
Fedele, V.;Pizzillo, M.;Claps, S.;Cifuni, G.F., Consiglio per la Ricerca Sperimentale in Agricoltura, Muro Lucano (Italy). Istituto Sperimentale per la Zootecnia
The objective of this study was to evaluate the effect of three alimentary treatments (grazing, pasture hay and mixed hay) on Siriana goat milk terpenes content and profile. The grazing group of 15 goats grazed for 7-9 hours per day on an area of 1.2 ha. The pasture hay group and mixed hay group were fed indoor with hay ad libitum. All groups received 600 g per day of the same concentrate. The trial lasted three weeks, after 2 weeks of adaptation to the treatment. The contribution of botanical categories to the diet was determined on hay and on grazed herbage. Once a week, for three consecutive weeks, two samples of bulk milk from each group were analysed. Volatile compounds were analysed by method of Ciccioli et al. (2005). The highest mono and sesquiterpenes content was detected in milk from grazing goats and the lowest in milk from mixed hay treatment . Milk from grazing and pasture hay treatment showed a profile richer in mono and sesquiterpenes compounds than milk from the mixed hay group. These differences seemed associated with a higher contribution of forbs to grazing and pasture hay diets. The natural drying process did not affect the milk terpenes profile, but only reduced the terpenes content
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