Monteban
Introduction
During the withdrawal phase, poultry producers must carefully analyze feed additive programs in vaccinated birds. Late-cycling cocci can affect bird health, performance—and ultimately profitability. The following research was conducted to give producers accurate information on which to base decisions for vaccinated birds.
Objective
To better understand the response of commercial broilers to various feed additives during the withdrawal period when vaccinated for coccidiosis in the hatchery.
Length: 42 days
Timeframe: December 2010-January 2011
Design notes:
• Cobb 500 commercial broilers, vaccinated for coccidiosis in the hatchery
• Randomized complete block
• 48 pens, each allotted a total of 40 chicks
• All treatments represented in each block of 4 contiguous pens
• Birds mass weighed by pen at placement and at 14, 28 and 42 days
•Basal diets (coarse crumble) formulated based on Cobb 500 nutrient recommendations using local ingredients
• Live phase divided into starter, grower and withdrawal phases
Conclusions
By preventing late-cycling coccidiosis during the withdrawal phase (29-42 days) in broilers, Monteban demonstrated in this trial:
. Improved feed conversion of 5 points over life of flock (p.0.05)
. Improved feed conversion of 8-13 points in the withdrawal period
No withdrawal period is required in broiler chickens or swine when Monteban 100 is used according to label directions.
