Chemical composition of milk from goats fed with cactus pear (Opuntia ficus-indica L. Miller) in substitution to corn meal
2010
Costa, Roberto Germano | Filho, Edvaldo Mesquita Beltrão | Queiroga, Rita de Cássia Ramos do Egypto | Madruga, Marta Suely | de Medeiros, Ariosvaldo Nunes | de Oliveira, Celso José Bruno
The effect of corn meal substitution by cactus pear on the chemical analysis and fatty acid profile of goat milk was analyzed. Ten Alpine lactating goats (40±6kg) were allocated as two Latin squares (5×5) into five treatments (0, 25, 50, 75, and 100%) and five 15-day periods. The milk sampling used for the analysis was done in the three last days of each trial period. While other constituents remained unchanged (P >0.05), there was a linear reduction (P <0.05) in lipid contents and total solids in milk with the substitution of corn meal by cactus pear, with values ranging from 3.8 to 3.0% and from 12.1 to 10.8%, respectively, The saturated fatty acids percentage (SFA) increased linearly (P <0.05), while the monounsaturated fatty acids concentration (MUFA) decreased linearly (P <0.05), with values ranging from 62.8 to 71.9, and from 26.7 to 16.1%, respectively. The corn meal substitution by cactus pear reduced the ether extract of the diet with influences in the physicochemical quality of the goat milk, leading to a depression in fat, total solids, monounsaturated fatty acids and desirable fatty acids concentration.
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