prophylactic antibiotic ttreatment for layers poultry need help

[emsoss]

I am new to layers poultry and would like some help understanding some things. I have a small scale (1000 layers) farm in Burkina Faso and I have been in operation for 2 years. My first 1000 layers was infected with infectious bronchitis during week 45 and the rate of laying was severely hit. since we have treated them with antibiotic (tylodox) monthly. we brought a new flock of 1000 layers and kept the old going until the new subject started laying. it is now week 27 for the 2nd shed. during week 26 we were at 75% lay(840 eggs). The bird were not sick but we where advised to give prophylactic antibiotic treatment (tylodox and amprolium) monthly since we add infectious bronchitis in the previous shed. amprolium for coccidiosis. after the treatment, the laying rate dropped to 48% (540 egg) which is a considerable drop. at this level of laying rate it is not profitable. So i need to find out if it is common to see such a drop in laying after a treatment of antibiotic. Also is it common practice to administer antibiotic to laying bird monthly or at a frequent interval specially if it will cause a drop in the egg laying rate?

Thank you.

 

[Chickcatcher]

Not much knowledge on laying birds but Infectious bronchitis would probably be better controlled by Vaccination. Our chicks are Vaccinated at day old in the Hatchery I know others are done at various stages durring growing cycle of Broilers. Perhaps @Daniel may be more use too you.
You say Burkino Faso the one in the Middle of Africa? somewhere above Ghana? The only one I am Finding is spelt BurkinA Faso

 

[Chickcatcher]

Prophylactic antibiotic treatment in the Uk is very much a No No these days. We all try very hard to steer away from any antibiotic use.

 

[Daniel]

Yes the birds can be vaccinated in the rearing phase and then be top up vaccinated as adults. I'm not sure where gou'd get the vaccine from in Burkina Faso though?!

 

[Fogg]

Antibiotics won't give you any defence against IB, it's viral. As others have said you need a vaccination programme to control that.

IB is a Coronavirus. That's something I learnt only last week.

I imagine it's just a coincidence that you're getting a viral challenge after dosing with the antibiotics.

 

[emsoss]

Thank you to everyone for your reply.
@Daniel

we do have a vaccination schedule and all the vaccine are completed by day 119. Would you please look at it and see if you do anything different. is it recommended to repeat any of these vaccine during the laying period?
Thank you.

 

[emsoss]

Yes the birds can be vaccinated in the rearing phase and then be top up vaccinated as adults. I'm not sure where gou'd get the vaccine from in Burkina Faso though?!

we do have a vaccination schedule and all the vaccine are completed by day 119. Would you please look at it and see if you do anything different. is it recommended to repeat any of these vaccine during the laying period?
Thank you.