SELECTION OF STOCKS

_________is an act of joining cock with hen so that hens may produce fertile eggs for hatching and multiplication

mating

Ten hens are kept in a breeding pen and one cock is permitted to mate and live with them freely

Eggs collected, a week after letting in the cock, will normally be fertile

Pen mating

• Preferred where ordinary farm conditions are prevalent

• It also permits housing for a large number of fowls as one unit and thereby reduces the overhead costs

Flock mating 

• Consists of keeping the cocks and hen in separate pens or confining the males in separate coops in the pen of the females

• The hens are let into the male’s pen one by one at intervals, and after mating they are removed to their own pen

Stud mating 

breeding for increased homozygosity

inbreeding

(breeding for increased heterozygosity

outbreeding

Mating between sibs and parents and progeny

Full sib mating and back crossing of the progeny to the parents are often practices

Close inbreeding 

• Developing a small group of animals within a breed and variety with a special character in view

• This is a mild form of inbreeding

• For example, Babcock strain of Single Comb White Leghorn developed to lay heavier eggs

Strain formatiobn

• Inbreeding with an ancestral line and is the most intensive form of backcrossing

• Is back crossing to the same parent for several generations in succession

Line breeding

The relationship of the individuals which are mate is less close than the average relationship within the population 

Outbreeding