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Sheep and goats are both small ruminants with cosmopolitan distributions due to their being kept historically and in modern times as grazers both individually and in herds in return for their production of milk, wool, and meat. [1] As such, the diseases of these animals are of great economic importance to humans.
Haemonchus contortus, also known as the barber's pole worm, is a very common parasite and one of the most pathogenic nematodes of ruminants. Adult worms attach to abomasal mucosa and feed on the blood. This parasite is responsible for anemia, oedema, and death of infected sheep and goats, mainly during summer in warm, humid climates. [2]
C. pseudotuberculosis causes a disease known as caseous lymphadenitis that most commonly affects small ruminants, such as goats and sheep. [9] [10] The disease often presents with pyogranulomatous abscess formation. [11] Abscessation can occur in numerous areas, but it most commonly affects the cutaneous region and superficial lymph nodes.
Sarcoptic mange - Includes disease in dogs, missing info on horses, cattle, sheep, goats, pigs, pot-bellied pigs, and guinea pigs. Psoroptic mange - Includes sheep scab Stub; Scaly leg - Disease in birds, caused by Knemidocoptes mutans. Stub. Sea louse - Disease in fish. Trichobilharzia regenti - Nasal parasite in birds. Substub.
External parasites of primary concern from an economic perspective are biting flies, grubs, lice and ticks. Nuisance flies such as house flies and face flies, can affect cattle to a lesser degree.
Under most situations, infection is hard to recognize because the symptoms are mild or even absent. In humans and wild animals, infection is not easily identified. Especially the adult flukes, even if in large number, generally do not cause complications. There is not yet a standard diagnostic test. Therefore, manual diagnosis is done at many ...
The skin disease dermatophilosis of cattle, sheep, and goats is caused by the bacterium Dermatophilus congolensis, which is transmitted by simple contagion. When Amblyomma variegatum adult ticks are also feeding and causing a systemic suppression of immunity in the host, then dermatophilosis becomes severe or even fatal. [16]
Worms and other internal parasites can be treated easily but are some of the most common problems seen in dogs. Some of the internal parasites that cause diarrhea and loose stools in puppies ...