The periparturient cow undergoes a transition from non-lactating to lactating at calving. The
animal is tremendously challenged to maintain calcium homeostasis. Those that fail can …

Total blood calcium (Ca) concentration in the adult cow is maintained between 8.5 and 10.0
mg/dL (2.1 and 2.5 mmol/L). Nearly all cows will experience some degree of hypocalcemia …

Hypocalcemia and hypophosphatemia are relatively common in periparturient cows. This
article reviews the etiologic factors that contribute to the development of these conditions …

化学物可以直接或者间接地干扰神经系统功能, 从而引起神经毒性. 目前研究发现,
上百种化学物对人体都有潜在的神经系统毒作用. 此外, 很多其它化学物也常常作为工具药 …

Polioencephalomalacia (PEM) is a neuropathologic condition of ruminants that can be
induced by a variety of neural metabolic disruptions. These include altered thiamine status …

The periparturient cow undergoes a transition from non-lactating to lactating at calving. The
animal is tremendously challenged to maintain calcium homeostasis. Those that fail can …

ABSTRACT On December 2, 1999, 120 pregnant cows were weighed, their body condition
scored, and then sorted into six groups of 20 stratified by BCS, BW, breed, and age. Groups …

Four macrominerals have the distinction of being involved in the ''downer cow''syndrome,
which is, unfortunately, often associated with parturition in cows. Inadequate blood calcium …

High cation diets can cause milk fever in dairy cows as they induce a metabolic alkalosis
reducing the ability of the cow to maintain calcium homeostasis at the onset of lactation …

While many cattle feeding areas in the United States have long dealt with high sulfate water,
increased feeding of ethanol coproducts such as distillers grains with solubles to beef cattle …