Milk compositional changes of Laoshan goat milk from partum up to 261 days postpartum
2018
Chen, Di | Zhao, Xuan | Li, Xiangying | Wang, Jianmin | Wang, Cunfang
Despite the global increasing demand for goat milk, no data exist on the nutrient potential of Laoshan goat milk and limited information exists on its composition according to lactation period. In this study, the measured indicators, including dry matter, protein, immunoglobulin, lactoferrin, fat, ash, lactose, calcium, titratable acidity and pH from partum to 261 days postpartum of Laoshan goat milk, followed the same law of change. There was a significant difference over the first 5 days postpartum, after which no significant difference was observed until days 225 postpartum. However, days 255 postpartum was like a turning point, after which their values showed either an increasing or decreasing trend. We concluded that the colostrum for Laoshan dairy goat was considered from days 1 to 5 postpartum and after 5 days it was as transitioned to milk when all measured parameters were according to the normal ranges as described in this study. This work provided updated information on the current nutritive characteristics of Laoshan goat milk, which may be of importance in the fields of milk production, food technology, and nutritional mutual replenishment.
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