Developing Cattle Developing Cattle Breeding Program Breeding Program Setting of goals is of major importance and includes goals for: 1. 2. 3. 4.
Dec 24, 2015
Developing Cattle Breeding Developing Cattle Breeding Program Program
Setting of goals is of major importance and includes goals for:
1.2.3.4.
Breeding management will impact each of
above in varying degrees.
1.
2.
Once goals established, herd assessment is needed – where is herd at?
1.2.3.
Larger frame cows have higher maintenance costs.
Larger frame feedlot cattle:
1.
2.
3.
4.a.b.
Bringing about genetic change 1. Selection
2. Mating systems
Inbreeding
Outbreeding
Crossbreeding – two reasons1. For certain traits may result in
heterosis
avg of avg of
% heterosis = crossbreeds – purebreds x 100
avg of purebreds
a.
2. Breed complementarity – implies using breeds in a crossbreeding program
where their strengths and weaknesses
complement one another
a.
1.)
Composite breeds – have gained in
popularity, reasons: 1.2.3.
Formed Retained % of Improved from maximum productivity
heterosis of cow herd (%)
2 – breed 50 12 3 – breed 67 15 4 – breed 75 17
Successful breeding program depends on:
1. Accurate collection of data and interpretation
2. Maintaining proper contemporary groups
a.b.