Raising in the first days
To read more content about aviNews November 2020
Although in a breeder flock, both sexes are responsible for good fertility, raising and keeping good quality males during the rear and throughout the stage of production is particularly important. A well-developed body is the basis for keeping fertility at a high level over a long period of time.
Raising in the first days
The key to promoting and developing a good strong skeletal frame size for males is to provide the correct environmental conditions and encourage good feeding and drinking behavior during the brooding period.
RECOMMENDED ENVIRONMENTAL CONDITIONS AT THE TIME OF PLACING DAY-OLD CHICKS
If possible, an initial visual grading of the males should be done around 7-10 days of age with chicks graded into three or four subgroups according to body size and weight. This will help promote a good start and provide chicks with equal access to feed and water.
SELECTION & SEPARATION
By four weeks of age, the average weight of males should reach approximately 755 g, ranging up to 800 g.
Birds are graded and separated into different weight categories (light, average, and heavy). In this way each group is raised separately to achieve the final body weight and desired uniformity.
Poor quality males should be removed and a male reduction program implemented, which removes very light males or those with physical defects.
To further improve the uniformity of the males, it is advisable to make up to four selections during the rearing period.
That is, at 4, 10, 15 and 20 weeks of age, removing males with a poor physical condition and relocating the males within the groups according to their weight.
In this way we can ensure the maximum possible uniformity in each flock. The objective is to