Jose J. Bruzual, it is necessary to wait for a moment maybe it is subjects who have not been well vaccinated then after make a coprological examination on the droppings collected in the morning and make a quantitative and qualitative analysis during good vaccination we will find only one category of oocysts if, on the contrary, we will find a maximum of eimeria.
On the other hand, if the time of vaccination is long enough and the number of affected subjects increases, treat with anticoccidial drugs.
Bouayad If cocci breakage persists, first check to see if the vaccine is viable. If it is, make sure the chick density is right to increase the humidity of the litter. I like about 40 chicks per m2 for the first 7-9 days. This can vary depending on the humidity of the litter. If the second cycle occurs correctly, you will have a decent number of oocysts per gram of feces and a good immune response. very important the first 7-9 days.
nice impressive topic , i used to vaccinate birds at 4 day feed topping vaccination, do you have any comparative study? Between routs of conidial vaccine administration and its efficiency
Arkan Lubani I did a study with revaccination at day 4 via spray in the brooding area after vaccination at day of age. so far many flocks with no coccidiosis in the field. I presented that work at AAAP 2021
Coccodiosis in broiler breeders reared on deep litter is a real challenge. The feed restriction starts after 4th week and the quantity of coccidiostat given through feed also get restricted. The outbreak if not detected immediately can kill lot of birds. Deaths can be reduced by prompt early medication.
The vaccines given for broiler breeders are live and we should not give coccidiostats in feed to the vaccinated flocks. The vaccine manufacturer recommends no coccidiostat in feed and medication with amproleum when we see the clinical cases which is relatively milder.
Here comes the question " is the vaccine really effective?". If the vaccine is effective why do we see the cases? If vaccine fails the outbreak can be serious because there is no coccidiostat in feed and we are banking on milder medicine for treatment (as per the advise of the vaccine manufacturer). The problem is more serious in males facing heavier restriction. Loss of males will lead to heavy loss on the whole flock.
Cage rearing of broiler breeders solved 95% of coccidiosis problems. We will be back to the dilemma "vaccine with no coccidiostats or higher dose of coccidiostats with restricted feeding"? Once the cages are banned and the flocks are back on deep litter.
Infections with coccidia are often associated with severe economic losses. Currently the prevention and control of coccidiosis is based on good hygiene, chemotherapy (Coccidiostats) and immunization. Monitoring programmes are essential for the early recognition of strains developing resistance. Generally, anticoccidial drugs or vaccination alone is of little value, unless they are accompanied by improvements in all aspects of management. More attention should be given to improved sanitation and hygiene at the farm level. Including, all parameters which can improve litter quality such as: appropriate installation and management of watering systems, providing adequate feeding space, maintaining recommended stocking density and supplying adequate ventilation.
Hafez Mohamed What methods do you think are most appropriate for monitoring programmes are essential for the early recognition of strains developing resistance?