parasitic diseases of slaughtered food animals

- I- Parasites directly transmissible to man

	1.    Beef measle	2.    Pork measle
Cause	Cysticercus bovis	Cysticercus cellulosa
F.H	Man
I.M.H	Cattle and Buffalo	Mainly in Pig and Man
Judgement	More than one cyst living or dead in an area of the size of a hand palm in different cuts of carcass is considered heavy infestation and requires T. Otherwise considered light and conditionally passed after freezing, boiling steaming, or pickling.	Even one cyst living or dead detected in any part of the carcass or organ makes total condemnation (T).

3- Trichinosis (the smallest nematode)

Cause: Trichinella spiralis larvae

Host: Pig, wild boar, rat, mice, dog, man and cat. Ruminants, horses, and birds show natural immunity while camels can infest experimentally.

Resistance: Viable in decomposed meat for 2 year

Judgement: Even one cyst live or dead requires total condemnation

Control measures

- Pig flesh is trichinella-free

- Pork should be ground in a separate grinder

- Control rodents

- Proper cooking (at least 30 min at 100°C) of swill fed to pigs

Man

- Cooking: Meat color changes from pink to grey and easily separates muscle fibers.

- Freezing (-15 ° C for 20 days thickness less than 6 inches)

 Irradiation: in countries allowing irradiation

4- Sarcosporidia

•  F.H: Ingestion of cysts (bradyzoites)

•  I.M.H: Ingestion of feed with oocysts

•  Predilection seats: Larynx- Esophagus- Diaphragm- Abdominal muscle- Lumber region muscle- Skeletal muscle (heavily infested cases)

•  Judgement:

Localized affection condemnation of the affected part

Heavy infestation “T”

•  Types (Forms) Sarcosporidia

Macroscopic	Microscopic
- Buffalo: Balbiana gigantea in the esophagus -  Sheep: S. gigantea and S. medusiformis -  Pig: S. porcifelis	- Sheep: S. tenella -  Cattle: S. blanchardi and cruzi - Pig: S. miescheriana - Man: • S. humnis (bovis humnis) and S. suihominis (F.H) • S. lindimanni (I.M.H)