Enteric necrosis & coccidiosis

[Ayodeji Fatokun]

Coccidiosis is caused by protozoa (Eimeria) and leads to watery or bloody diarrhea, weight loss, and dehydration.<div>
<div> Enteric necrosis is caused by bacteria (e.g.,Clostridium perfringens) and causes foul-smelling diarrhea, intestinal tissue necrosis, and can result in sudden death. </div><div>
</div><div>The key difference lies in the cause (protozoa vs. bacteria) and the appearance of lesions, with enteric necrosis showing necrotic tissue.</div></div>

[Hamza Muhammad]

To differentiate between coccidiosis and necrotic enteritis (NE) in poultry, look for coccidiosis lesions as small, deep, dotted petechiae (pinpoint hemorrhages) on the intestinal wall, while NE lesions are more extensive and superficial hemorrhages.

Here’s a more detailed breakdown:

Coccidiosis:

Cause:

Caused by protozoan parasites of the genus Eimeria.

Lesions:

Small, deep, dotted petechiae (pinpoint hemorrhages) that can be seen through the intestinal wall.

May be observed in specific regions of the gut, like the duodenum (E. acervulina) or jejunum (E. maxima).

Clinical Signs:

Reduced growth rate.

Diarrhea (may be bloody).

Lethargy, ruffled feathers, and depression.

Reduced appetite and weight loss.

Diagnosis:

Fecal flotation to detect oocysts.

Postmortem examination of tissues.

Microscopic examination of intestinal content or mucosal layer for oocysts.

Necrotic Enteritis (NE):

Cause:

Primarily caused by Clostridium perfringens bacteria, often exacerbated by coccidiosis or other factors that damage the intestinal mucosa.

Lesions:

More extensive and superficial hemorrhages (haemorrhages).

Necrotic mucosa may appear greyish-creamy or greenish.

Intestinal lumen may be filled with brownish watery content mixed with gas bubbles.

Clinical Signs:

Depressed birds with ruffled feathers.

Diarrhea, dehydration, and inappetence.

Mortality can be significant.

Subclinical forms can also occur.

Diagnosis:

Necropsy to visualize lesions.

Gram stain of mucosal scraping or bacterial culture.

Consider other enteric diseases and normal features of the intestine.

Key Differences and Considerations:

Severity: Uncomplicated coccidiosis rarely produces lesions as acute or severe as those of necrotic enteritis.

Timing: Coccidiosis often develops before or during the NE phase.

Interrelation: NE is often induced after a coccidiosis infection or any factor that causes stress, reduces immunity, and disturbs the intestinal ecosystem.

Diagnosis: A correct diagnosis is crucial for choosing an effective treatment.

Prevention: Coccidiosis prevention strategies, such as vaccination and the use of coccidiostats, can help reduce the risk of NE.To differentiate between coccidiosis and necrotic enteritis (NE) in poultry, look for coccidiosis lesions as small, deep, dotted petechiae (pinpoint hemorrhages) on the intestinal wall, while NE lesions are more extensive and superficial hemorrhages.
Here’s a more detailed breakdown:
Coccidiosis:
Cause:
Caused by protozoan parasites of the genus Eimeria.
Lesions:
Small, deep, dotted petechiae (pinpoint hemorrhages) that can be seen through the intestinal wall.
May be observed in specific regions of the gut, like the duodenum (E. acervulina) or jejunum (E. maxima).
Clinical Signs:
Reduced growth rate.
Diarrhea (may be bloody).
Lethargy, ruffled feathers, and depression.
Reduced appetite and weight loss.
Diagnosis:
Fecal flotation to detect oocysts.
Postmortem examination of tissues.
Microscopic examination of intestinal content or mucosal layer for oocysts.
Necrotic Enteritis (NE):
Cause:
Primarily caused by Clostridium perfringens bacteria, often exacerbated by coccidiosis or other factors that damage the intestinal mucosa.
Lesions:
More extensive and superficial hemorrhages (haemorrhages).
Necrotic mucosa may appear greyish-creamy or greenish.
Intestinal lumen may be filled with brownish watery content mixed with gas bubbles.
Clinical Signs:
Depressed birds with ruffled feathers.
Diarrhea, dehydration, and inappetence.
Mortality can be significant.
Subclinical forms can also occur.
Diagnosis:
Necropsy to visualize lesions.
Gram stain of mucosal scraping or bacterial culture.
Consider other enteric diseases and normal features of the intestine.
Key Differences and Considerations:
Severity: Uncomplicated coccidiosis rarely produces lesions as acute or severe as those of necrotic enteritis.
Timing: Coccidiosis often develops before or during the NE phase.
Interrelation: NE is often induced after a coccidiosis infection or any factor that causes stress, reduces immunity, and disturbs the intestinal ecosystem.
Diagnosis: A correct diagnosis is crucial for choosing an effective treatment.
Prevention: Coccidiosis prevention strategies, such as vaccination and the use of coccidiostats, can help reduce the risk of NE.

[Md. Osman Sheikh]

To differentiate between coccidiosis and necrotic enteritis in poultry, consider that coccidiosis is a protozoal infection causing bloody or watery diarrhea, while necrotic enteritis.

[Md. Abdul Bari]

To differentiate between coccidiosis and necrotic enteritis, consider that coccidiosis, a protozoal infection, causes small, deep, dotted lesions (petechiae) in the intestines, while necrotic enteritis, often triggered by coccidiosis, leads to more extensive and superficial bloody lesions (haemorrhages).

[Amir Sohel]

Coccidiosis, caused by protozoa, often presents with small, deep, dotted lesions (petechiae), while necrotic enteritis, caused by bacteria, shows more extensive, superficial, hemorrhagic lesions