Dairy nutrition Flashcards
Housing and Management Driven
Individual tie stalls, drylot, confinement, pasture
Feeding Baby Calves
Disease and mortality prevention, stimulated dry feed intake, enhance rumen development
Immunity in calves
No placental transfer of antibodies in cattle, sheep, horses, and pigs. Needs to get antibodies from colostrum
Importance of Colostral immunoglobulins
IgG, IgA, and IgM
Primary immunoglobulins in colostrum
IgG - primary circulating antibody
IgA - protective coating for small intestine
MR
Medicated to prevent scours and coccidiosis
Calf starter
rolled cereal grains, protein, vitamin, minerals, moderate to high molasses to stimulated feed, medicated
metabolic diseases of the transition period
retained placenta, milk fever, displaced abomasum, ketosis
Displaced abomasum
left hand more common - surgical correction
Right hand DA - torsion, severse electrolyte imbalance, high mortality
Milk fever
drop in blood Ca, treat with IV ca borogluconate, age and breed dependant - increased in jerseys older cows
DCAD
Na+K-Cl Prevention of MF feed anionic diets -3 to 0 weeks prepartum Also add chloride salts High DCAD increased milk fever
Ketosis
related to inadequate energy intake and excessive body fat mobilization
mobilized free fatty acids are incompletely oxidized
Incomplete rumen biohydrogenation
Low milk fat
Dairy cow feeding systems
Pasture based - MIRG
Automated grain feeding - feed grain after milking
TMR
Total mixed ration. advantages - use of bulk commodities - huge price advantage
each bite is balances, more stable rumen, group feeding
Disadvantages - feeding long hay is difficult, cant feed individual cows by production, each group needs a separate ration
