ANSC 2120 Lecture Notes - Lecture 38: Milk Fever, Bone Resorption, Hypocalcaemia
29 Feb 2016
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Complex, multifactorial etiology, can be caused by factors such. Failure to fully adapt to a new physiological state: e. g. parturient paresis (milk fever) or ketosis in dairy cows soon after calving. Hormone deficiency or imbalance: e. g. diabetes. Obesity, exacerbated by physiological state (e. g. fat cow syndrome in dairy cattle during late pregnancy and early lactation) or sudden stress (e. g. pregnancy toxemia in pregnant ewes, hepatic lipidosis in fasted cats) Diseases such as ketotsis that are due to energy (glucose) (cid:1) (cid:1) deficiency may be secondary to a primary dysfunction (e. g. hypocalcemia, infectious disease) that causes decreased dry matter intake (cid:1) (cid:1) (cid:1) General features: occurs in 8-9% of us diary cows, more common in older cows, jersey breed, usually occurs within a few days after calving, associated (indirectly?) with increased incidence of mastitis, ketosis, and other production diseases. Symptoms: severs hypocalcemia (low plasma ca, depression, inappetance, muscular spasms, recumbancy, paralysis, unconsciousness, and death if not quickly treated.
