BCP Test 3 Flashcards
(34 cards)
Terminal crossbreeding systems
Two-Breed terminal crossbreeding, Three-Breed terminal crossbreeding,
describe F1 calves
Calves are very uniform and productive. They have heterosis.
describe Three breed terminal crossbreeding
same as a crossbred but the F1 generation will be partly kept as replacements and bred for purely terminal calves.
Breeds used in mating systems should be based on the following:
Productivity and adaptability for the production environment. Marketability, Heterosis, availability and cost.
Angus
Black hide, british breed, polled, good carcass. Lower adaptability
Beefmaster
American Breed, brahman, shorthorn, Hereford. Ability to reproduce and live in tough places and milk.
Braford
American breed. Great growth and carcass. Poor disposition and later maturing.
Brahman
American, Nelore, Krishna valley, Buzerate, gir. Gray color, Longevity, heat tolerant. Mothering and dressing percentage.
Brangus
American, 5/8 angus. excellent growht, calf marketbaility .
Charolais
Contenital breed, came from france, Rapid growth
Hereford
Red Body and white face. Most recognized range breed. Fertilty, temperament, growth and quality. Increased health probs and calving difficulty.
Longhorn
American breed, live forever, longevity and fertility, . bad carcass and marketability.
Simmental
exotic breed, growth potential, bad calving ease,
What percent of cattle will be implanted before weaning
15-25%
50% of calves are born in what three months
february, march or april
Calfs retained at weaning will be implanted what % of the time
75%
What is sale weight determined by?
weighing at 7:00 a.m. and subtracting 4% shrink.
Major factors that influence the profitability of a cow calf operations
Weaning weight, weaning %, cost of cow, marketability.
ways to increase calf crop
Improve nutrition, Develop replacements, good health program, and bull power.
Increase weaning weight
Crossbreeding, growth breeds, implants,bulls, More milk production, shorten the breeding season.
Considerations for your time of calving
Weather, Nutrition, markets
Advantages to spring calving
Weather help conception rate, good calving weather, less winter feed
Disadvantages to spring calving
Lower market, Pasture and cow dry when calves need more nutrition,
Fall calving advantages
Cows bunched for feeding that is good for bull breeding, good market, good growth for calf during spring