Sheep and cattle parasites

Haemonchus contortus

sheep

abomasum

anemia, bottle jaw, sudden death

MLs and BZs

Teladorsagia circumcincta

sheep

PGE with scour, poor growth

BZs, MLs

Nematodirus battus

sheep

spring lambs

watery scour, weight loss, sudden death

benzimidazoles

Eimeria spp

sheep

coccidiosis

lambs 3-8 weeks

black scour, tenesmus, ill thrift

toltrazuril

Fasciola hepatica

sheep and cows

liver fluke

anemia, weight loss, bottle jaw, PM: fibrosis

hypoalbuminemia in cows

triclabendazole, closantel

Calicophoron daubneyi

sheep

rumen fluke

diarrhea, ill thrift

oxyclozanide

Psoroptes ovis

sheep scab mite

pruritus, wool loss, weight loss, exudate

ML injections

Bovicola ovis

sheep

chewing louse

pruritus, fleece damage, no anemia

pour-on

Echinococcus granulosus

sheep and cows

hydatid cysts

prevent via dog deworming with praziquantel

Dictyocaulus viviparus

cattle

lungworm

coughing, tachypnea, poor growth

MLs, vax

Ostertagia ostertagi

cows

PGE, scour, weight loss

BZs, MLs

Cooperia spp

cows

PGE, less pathogenic

BZs, MLs

Trichostrongylus axei

cows

poor thrive, scour, low weight gain

anthelmintics

Dicrocoelium dentriticum

cows

lancet fluke

chronic cholangitis, photosensitization

high-dose albendazole

Chorioptes bovis

cows

tail rubbing, dermatitis, no anemia

pour on MLs

Bovicola bovis

cows

chewing louse

pruritus, hair loss

pour-on pyrethoids

Taenia saginata

cows

beef measles

break cycle: sanitation, meat inspection