Glucose Balance In Cattle
نویسنده
چکیده
In contrast to nonruminants, forage-fed ruminants normally absorb very little glucose from their feed. However, glucose supply is still crucial for maintenance and productive functions in ruminants, such as growing and lactating cattle. Glucose supply is especially important for the lactating dairy cow because of the demands of milk synthesis for glucose. Glucose requirements of ruminants are largely met through glucose synthesis, which predominantly occurs in the liver using glucose precursors absorbed following fermentation and digestion of the diet. Therefore, glucose metabolism in the lactating dairy cow represents a balance between glucose requirement for milk production and glucose carbon supply from the diet, which is integrated by the liver. As milk yield of the modern dairy cow has continued to march upwards, so too has her requirement for glucose. The present paper will consider the implications of high rates of milk yield for the cow’s glucose balance in terms of:
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