Cow Diseases

Due to endocrine imbalance Disorder of GnRH release Improper timed LH surge Missing receptors for LH/FSH HIGH milk production Seasonality Nutrition Estrogenic feeds Heredity

Nymphomania (not wanting sex) Anestrus (no estrus)

History Rectal palpation Ultrasound

50% randomly resolve GNRH 95% cure in 3 treatments

Cull Early re breeding GnRH assure accurate diagnosis

1st or 2nd stage Fetal oversize Hypocalcemia Failure of cervical dilation

Use low birth weight Bulls Pelvic measurements Good nutrition

Hypocalcemia Endotoxemia Ketosis Birth of twins Space for the abomasum to wander in between ruman and body wall

Off feed (grain) Falling milk production Ping on left side Normal vital signs

Cull Rolling plus a blind stitch Surgery Correct electrolyte imbalances Lets is

Gradual chain in grain levels early in milking period TMR CONTROL hypocalcemia (lower CA during dry period ) Other needed pretreatment

Acute non fever disease that occurs around calving Affects high production cows who are generally order Weakness in paresis

Low blood calcium Milk fever has a 2-7 mg/dL

Loss of control Flank and loin trembles Restless Bellowing Will go to stage 2

Sternal, unable to stand, walk Hypothermic Depression Smooth school paralysis

Loss of consciousness to come Unable to remain sternal Unresponsive to stimuli Severe bloat Decrease cardiac output Death if untreated p

Increase serum calcium Treat bloat

Towards end dry period, feed low calcium diets Feed ammonium Chloride 100g/cow/day

Economic significance Affects milk composition and quality Public health Caused by bacteria entering in the test end Also in beef cows horses goats sheep

Number of organisms Frequency of exposure Ability to resist milk out Resistance to antibiotics

Diameter of teat end Conformation of the Udder Immunity of the gland

Milking machine function Udder trauma Sanitation

Contagious and environmental