The infectious process is rapid (4–7 days)
I'm very clear on what I posted and stand by it. My following quote is also from the Merck link you used... Which is a very reliable resource.
" Fresh oocysts are not infective until they sporulate; under optimal conditions (70°–90°F [21°–32°C] with adequate moisture and oxygen), this requires 1–2 days. The
prepatent period is 4–7 days"
So sporulate of 2 days plus prepatent of 4 equals at least SIX days old BEFORE symptoms of coccidiosis present..
I've hatched hundreds of chicks... there's a HUGE difference between failure to thrive and coccidiosis. Since it takes one to two day before oocysts can be sporulated and another several days before they reproduce AFTER being sporulated and ingested... given the age of the chick AND other symptoms described.. I gave what
I consider to be the most accurate answer.. according to MY experience.
But I AM here to learn as well as share what I've learned... and it was great to review that Merck link again, thank you.
Please note... Science and understanding is also an ever evolving situation, remember we USED to call Pluto a planet. It's often good to note the date your resource was last updated since SOME information does get out dated (just for informational purposes), so looking at multiple sources is always a good idea.
This content appears to not have been reviewed since 2014 for instance.
"Last full review/revision Jun 2014 | Content last modified Jun 2014"
ETA: Lethargy of shipped chicks is NEVER IMO a symptom of coccidiosis! It's a symptom exhaustion, possibly being chilled to the point of organ damage, dehydration, trampling, or other internal issue we can't detect. NOT coccidiosis.
