This is consistent with the regression test applied
on macronutrient content, in which a significant reduction
(po0.01) was only observed in the lactose content
(r¼0.463) with increasing lactation time. Costa et al.
(2009), reported that the lactation period is an important
factor in the variation of characteristics of goat milk
composition. According to the authors, the amount of milk
produced and the lactose content is reduced later in the
lactation period, with a possible increase in fat and protein
contents. However, Queiroga et al. (2007) and Gomes et al.
(2012), observed different relationships. Gomes et al.
(2004) reported that most studies have assessed the milk
composition for a short lactation period, causing discrepancies among the results.