Milk Composition of Creole Goats Raised at Different Altitudes in an Extensive Production System in Northeast Mexico

Goat milk composition is affected by feeding, and in semiarid rangeland, information on Creole goat physicochemical lacking. For the fulfillment of this objective, three agroecological regions (AR) considering altitude (lowland 87, highland 779, mountain 1309 m above sea level) with different botanical compositions were chosen. Every AR analyzed accounted for 30 herds, a total 90 herds. The results demonstrated that had an influence mainly density protein. Milk increases as increases; conversely, protein decreases. On other hand, lowland ARs, salts solids not fat (SNF) percentages higher compared to (p < 0.05). freezing point (FP) was at altitudes ARs 0.01). In fatty acids (FA) profile, only C14:1 value altitude, whereas values Additionally, late lactation stage fat, FP, pH early values. opposite effect observed SNF. FA C10:0 C8:0 trend C18:2n6t. thrombogenic index significantly altitudes, similar AR. These characteristics could be explained consequence animal nutrition, well goat’s meat-type phenotype.