Calf Management Flashcards
Out of the issues listed, which ones are core issues: Etiologic diagnosis Hygiene Sensitivity patterns Passive transfer Nutrition Treatments Vaccines
Core issues:
Hygiene
Passive Transfer
Nutrition
All the others are minor issues in calf management
What is the primary source of calf pathogens?
Older calves
T/F: Calves born early in calving period have an increased likelihood of disease.
False - they have a decreased likelihood
T/F: Calves isolated from other calves have a decreased likelihood of disease.
True
What is the ideal BCS in a cow at calving(beef and diary)?
Beef = 5-6 out of 9 Dairy = 2.5 out of 9
Consequences of poor body condition in the dam
Increased incidence of dystocia
Decreased colostrum quality and milk production
Impaired dam reproductive performance
T/F: calves that survive dystocia are 2-6x more likely to become sick and are more likely to have failure of passive transfer.
True
We want heifers to be about ___% of their mature weight at breeding, so that they are about ___% of their mature weight at calving.
65; 85
We aim for yearling pelvic area between ___ and ___ cm squared.
140-170
When looking at pelvic diameters to select for breeding, it is ideal to set ____ criteria, rather than selecting for maximum weight or area.
culling
We want to select sires with a ___ birth weight.
low
What are expected progeny differences (EPDs)?
Prediction of sire effects relative to breed average in a baseline year
T/F: You can compare EPDs between different breeds of cattle.
False - only within the same breed
Avoid use of ___ breed bulls on ___ breed heifers.
Continental; english
If continental breed bulls are used, only use bulls ranked in the lowest ___% for birth weight.
10
