PARASITES CRITTERS IN OR CRITTERS PARASITES SO WHAT
![PARASITES CRITTERS IN OR CRITTERS PARASITES CRITTERS IN OR CRITTERS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-1.jpg)
![PARASITES, SO WHAT? Dr. Tom Craig Department Veterinary Pathobiology Texas A&M University PARASITES, SO WHAT? Dr. Tom Craig Department Veterinary Pathobiology Texas A&M University](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-2.jpg)
![WHO ARE PARASITES? EUKARYOTIC ORGANISMS THAT LIVE IN OR ON A HOST AND MAY WHO ARE PARASITES? EUKARYOTIC ORGANISMS THAT LIVE IN OR ON A HOST AND MAY](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-3.jpg)
![ARTHROPODS ARTHROPODS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-4.jpg)
![HELMINTHS HELMINTHS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-5.jpg)
![PROTOZOA PROTOZOA](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-6.jpg)
![PARASITES LIVE ON OR IN A HOST A host is a animal that provides PARASITES LIVE ON OR IN A HOST A host is a animal that provides](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-7.jpg)
![LIFE CYCLES : THE ESSENCE OF PARASITOLOGY The steps from one generation to the LIFE CYCLES : THE ESSENCE OF PARASITOLOGY The steps from one generation to the](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-8.jpg)
![HOW DO WE KNOW IF THERE ARE PARASITES PRESENT Look for parasites: Ectoparasites may HOW DO WE KNOW IF THERE ARE PARASITES PRESENT Look for parasites: Ectoparasites may](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-9.jpg)
![FOR DIAGNOSIS OF PARASITES YOU NEED TO ANSWER THREE THINGS 1. Host: What is FOR DIAGNOSIS OF PARASITES YOU NEED TO ANSWER THREE THINGS 1. Host: What is](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-10.jpg)
![IXODIDAE- HARD TICK AMBLYOMMA AMERICANA Small mammal, bird or reptile Soil Small mammal, bird, IXODIDAE- HARD TICK AMBLYOMMA AMERICANA Small mammal, bird or reptile Soil Small mammal, bird,](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-11.jpg)
![ARGASIDAE – SOFT TICKS Egg environment Adult Larva Nymph Found in environment of poultry ARGASIDAE – SOFT TICKS Egg environment Adult Larva Nymph Found in environment of poultry](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-12.jpg)
![OTOBIUS MEGNINI NYMPHS Deep in ear canal of cattle and anyone else handy ventral OTOBIUS MEGNINI NYMPHS Deep in ear canal of cattle and anyone else handy ventral](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-13.jpg)
![OTODECTES - EAR MITE Eggs Larva Nymph Found on the surface of the cat OTODECTES - EAR MITE Eggs Larva Nymph Found on the surface of the cat](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-14.jpg)
![SARCOPTES SCABEI MITE Egg Larva Nymph Found in the skin of many animal species SARCOPTES SCABEI MITE Egg Larva Nymph Found in the skin of many animal species](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-15.jpg)
![DEMODEX CANIS - MITE Egg Larvae Egg Adult Larva Found in hair follicles of DEMODEX CANIS - MITE Egg Larvae Egg Adult Larva Found in hair follicles of](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-16.jpg)
![Premise flies: Musca domestica Stomoxys calcitrans house fly stable fly Premise flies: Musca domestica Stomoxys calcitrans house fly stable fly](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-17.jpg)
![PASTURE FLIES: HAEMATOBIA IRRITANS (HORN FLY) ~1/8" long - half the size of a PASTURE FLIES: HAEMATOBIA IRRITANS (HORN FLY) ~1/8" long - half the size of a](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-18.jpg)
![GASTEROPHILUS INTESTINALISBOT FLY OF HORSE Egg Horse hair Larva Horse Tongue and Stomach Pupa GASTEROPHILUS INTESTINALISBOT FLY OF HORSE Egg Horse hair Larva Horse Tongue and Stomach Pupa](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-19.jpg)
![CTENOCEPHALIDES FELIS- CAT FLEA Eggs Hair of cat or dog Larva Floor cracks, rugs, CTENOCEPHALIDES FELIS- CAT FLEA Eggs Hair of cat or dog Larva Floor cracks, rugs,](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-20.jpg)
![ANOPLURA – SUCKING LICE Egg Hair of swine, cattle or others Nymph Skin of ANOPLURA – SUCKING LICE Egg Hair of swine, cattle or others Nymph Skin of](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-21.jpg)
![MALLOPHAGA - CHEWING LICE Egg Nymph Adult on feathers of birds (primarily) or hair MALLOPHAGA - CHEWING LICE Egg Nymph Adult on feathers of birds (primarily) or hair](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-22.jpg)
![Ancylostoma caninum Eggs Dog feces Adults Anemic Puppy Small intestine of dogs Larva Dog Ancylostoma caninum Eggs Dog feces Adults Anemic Puppy Small intestine of dogs Larva Dog](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-23.jpg)
![STRONGYLUS VULGARIS – LARGE STRONGYLE OF THE HORSE Eggs Feces of horse Larvae Found STRONGYLUS VULGARIS – LARGE STRONGYLE OF THE HORSE Eggs Feces of horse Larvae Found](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-24.jpg)
![STEPHANURUS DENTATUS - KIDNEY WORM Egg OF SWINE Passed through urine Larvae Direct: ingestion STEPHANURUS DENTATUS - KIDNEY WORM Egg OF SWINE Passed through urine Larvae Direct: ingestion](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-25.jpg)
![STRONGYLOIDES WESTERI INTESTINAL THREADWORMS OF HORSE Egg-adult female lives in small intestines of foals STRONGYLOIDES WESTERI INTESTINAL THREADWORMS OF HORSE Egg-adult female lives in small intestines of foals](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-26.jpg)
![DIROFILARIA IMMITISHEARTWORM Microfilaria OF DOGS Larva Blood Mosquito Adults Heart DIROFILARIA IMMITISHEARTWORM Microfilaria OF DOGS Larva Blood Mosquito Adults Heart](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-27.jpg)
![TOXOCARA CANIS- ROUND WORM OF DOGS Egg Soil contaminated with feces Egg containing larva TOXOCARA CANIS- ROUND WORM OF DOGS Egg Soil contaminated with feces Egg containing larva](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-28.jpg)
![TRICHURIS VULPISWHIPWORM Egg Ingested by dog and hatch in small intestine Larva Penetrate into TRICHURIS VULPISWHIPWORM Egg Ingested by dog and hatch in small intestine Larva Penetrate into](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-29.jpg)
![DIPYLIDIUM CANINUMTAPEWORM DOG AND CAT Egg ingested by larvae flea Egg basket Dog/Cat feces DIPYLIDIUM CANINUMTAPEWORM DOG AND CAT Egg ingested by larvae flea Egg basket Dog/Cat feces](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-30.jpg)
![TAENIA PISIFORMIS- DOG TAPEWORM Proglottids When the dog eats the rabbit they begin to TAENIA PISIFORMIS- DOG TAPEWORM Proglottids When the dog eats the rabbit they begin to](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-31.jpg)
![FASCIOLA HEPATICA - LIVER FLUKE OF CATTLE AND SHEEP Egg Cercariae Miracidium Feces Snail FASCIOLA HEPATICA - LIVER FLUKE OF CATTLE AND SHEEP Egg Cercariae Miracidium Feces Snail](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-32.jpg)
![GIARDIA INTESTINALIS Cyst Trophozite Found in feces of many animal GIARDIA INTESTINALIS Cyst Trophozite Found in feces of many animal](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-33.jpg)
![ISOSPORA- DOG AND CAT PROTOZOA Oocyst Feces Sporulated oocyst environment eaten by dog or ISOSPORA- DOG AND CAT PROTOZOA Oocyst Feces Sporulated oocyst environment eaten by dog or](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-34.jpg)
![GOT PARASITES WHAT SHOULD WE DO? KILLUM ALL! Maybe not? Control disease, live with GOT PARASITES WHAT SHOULD WE DO? KILLUM ALL! Maybe not? Control disease, live with](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-35.jpg)
![USE OF ANTHELMINTICS OR PESTICIDES Treat them what needs it A. Sick animals: Disease USE OF ANTHELMINTICS OR PESTICIDES Treat them what needs it A. Sick animals: Disease](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-36.jpg)
![EVALUATION OF WORM NUMBERS; EGG COUNTS OR ANEMIA Count the number of eggs in EVALUATION OF WORM NUMBERS; EGG COUNTS OR ANEMIA Count the number of eggs in](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-37.jpg)
![SELECTIVE TREATMENT FAMACHA SELECTIVE TREATMENT FAMACHA](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-38.jpg)
![USE OF ANTHELMINTIC COMBINATIONS Widely used in some countries has been used in US USE OF ANTHELMINTIC COMBINATIONS Widely used in some countries has been used in US](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-39.jpg)
![MANAGEMENT PROCEDURES TO STOP, REDUCE OR REMOVE RESISTANT WORMS FROM A FARM Strategic treatment MANAGEMENT PROCEDURES TO STOP, REDUCE OR REMOVE RESISTANT WORMS FROM A FARM Strategic treatment](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-40.jpg)
![BOVINE BABESIOSIS The first dean of the College of Veterinary Medicine Dr. Mark Francis BOVINE BABESIOSIS The first dean of the College of Veterinary Medicine Dr. Mark Francis](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-41.jpg)
![FEVER TICK CONTROL Dr. Francis showed killing ticks prevented transmission Dipping cattle every two FEVER TICK CONTROL Dr. Francis showed killing ticks prevented transmission Dipping cattle every two](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-42.jpg)
- Slides: 42
![PARASITES CRITTERS IN OR CRITTERS PARASITES CRITTERS IN OR CRITTERS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-1.jpg)
PARASITES CRITTERS IN OR CRITTERS
![PARASITES SO WHAT Dr Tom Craig Department Veterinary Pathobiology Texas AM University PARASITES, SO WHAT? Dr. Tom Craig Department Veterinary Pathobiology Texas A&M University](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-2.jpg)
PARASITES, SO WHAT? Dr. Tom Craig Department Veterinary Pathobiology Texas A&M University
![WHO ARE PARASITES EUKARYOTIC ORGANISMS THAT LIVE IN OR ON A HOST AND MAY WHO ARE PARASITES? EUKARYOTIC ORGANISMS THAT LIVE IN OR ON A HOST AND MAY](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-3.jpg)
WHO ARE PARASITES? EUKARYOTIC ORGANISMS THAT LIVE IN OR ON A HOST AND MAY CAUSE DISEASE Arthropods: ticks, mites, flies, fleas, lice Helminths: nematodes (cylindrical or round worms), cestodes (tapeworms), trematodes (flukes) Protozoa: amoeba, flagellates, ciliates, apicomplexa Lets find out about them
![ARTHROPODS ARTHROPODS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-4.jpg)
ARTHROPODS
![HELMINTHS HELMINTHS](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-5.jpg)
HELMINTHS
![PROTOZOA PROTOZOA](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-6.jpg)
PROTOZOA
![PARASITES LIVE ON OR IN A HOST A host is a animal that provides PARASITES LIVE ON OR IN A HOST A host is a animal that provides](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-7.jpg)
PARASITES LIVE ON OR IN A HOST A host is a animal that provides a living for a parasite: the host could be a pig, a person or poultry Parasites are specific : which species of host, where in or on the body they live, how they make a living, what kind of damage they do Hosts may tolerate parasites, become resistant to, co -exist with, or suffer from and even die because of them Infection with parasites does not mean disease! Disease occurs with excessive numbers of parasites The numbers required to cause disease varies with host, parasite, and environment
![LIFE CYCLES THE ESSENCE OF PARASITOLOGY The steps from one generation to the LIFE CYCLES : THE ESSENCE OF PARASITOLOGY The steps from one generation to the](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-8.jpg)
LIFE CYCLES : THE ESSENCE OF PARASITOLOGY The steps from one generation to the next: Where? What do they look like? What do they do? How they make a living and what happens to the host How do they survive? Inside and away from the host What can we do to prevent disease?
![HOW DO WE KNOW IF THERE ARE PARASITES PRESENT Look for parasites Ectoparasites may HOW DO WE KNOW IF THERE ARE PARASITES PRESENT Look for parasites: Ectoparasites may](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-9.jpg)
HOW DO WE KNOW IF THERE ARE PARASITES PRESENT Look for parasites: Ectoparasites may be readily seen or you may have to scrape the skin Internal parasites release their reproductive products into the blood, urine or feces; Microscopic evaluation after separation of parasitic reproductive products from host Postmortem examination looking in specific tissues for presence of parasites Evidence of past or present infection: Looking for antibodies, changes in serum chemistry, parasite secretions
![FOR DIAGNOSIS OF PARASITES YOU NEED TO ANSWER THREE THINGS 1 Host What is FOR DIAGNOSIS OF PARASITES YOU NEED TO ANSWER THREE THINGS 1. Host: What is](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-10.jpg)
FOR DIAGNOSIS OF PARASITES YOU NEED TO ANSWER THREE THINGS 1. Host: What is the species, sex and age of host 2. Parasite: Are we looking for something grossly visible or microscopic , where do we look? Organ, tissue or what comes from them 3. Environment: Where does the host live and make a living? Climate, time of year, food intake, where they rest, who else lives there
![IXODIDAE HARD TICK AMBLYOMMA AMERICANA Small mammal bird or reptile Soil Small mammal bird IXODIDAE- HARD TICK AMBLYOMMA AMERICANA Small mammal, bird or reptile Soil Small mammal, bird,](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-11.jpg)
IXODIDAE- HARD TICK AMBLYOMMA AMERICANA Small mammal, bird or reptile Soil Small mammal, bird, or reptile Many species of animals
![ARGASIDAE SOFT TICKS Egg environment Adult Larva Nymph Found in environment of poultry ARGASIDAE – SOFT TICKS Egg environment Adult Larva Nymph Found in environment of poultry](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-12.jpg)
ARGASIDAE – SOFT TICKS Egg environment Adult Larva Nymph Found in environment of poultry
![OTOBIUS MEGNINI NYMPHS Deep in ear canal of cattle and anyone else handy ventral OTOBIUS MEGNINI NYMPHS Deep in ear canal of cattle and anyone else handy ventral](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-13.jpg)
OTOBIUS MEGNINI NYMPHS Deep in ear canal of cattle and anyone else handy ventral dorsal
![OTODECTES EAR MITE Eggs Larva Nymph Found on the surface of the cat OTODECTES - EAR MITE Eggs Larva Nymph Found on the surface of the cat](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-14.jpg)
OTODECTES - EAR MITE Eggs Larva Nymph Found on the surface of the cat ear canal Adult
![SARCOPTES SCABEI MITE Egg Larva Nymph Found in the skin of many animal species SARCOPTES SCABEI MITE Egg Larva Nymph Found in the skin of many animal species](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-15.jpg)
SARCOPTES SCABEI MITE Egg Larva Nymph Found in the skin of many animal species (dogs, pigs, people) Adult
![DEMODEX CANIS MITE Egg Larvae Egg Adult Larva Found in hair follicles of DEMODEX CANIS - MITE Egg Larvae Egg Adult Larva Found in hair follicles of](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-16.jpg)
DEMODEX CANIS - MITE Egg Larvae Egg Adult Larva Found in hair follicles of dogs
![Premise flies Musca domestica Stomoxys calcitrans house fly stable fly Premise flies: Musca domestica Stomoxys calcitrans house fly stable fly](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-17.jpg)
Premise flies: Musca domestica Stomoxys calcitrans house fly stable fly
![PASTURE FLIES HAEMATOBIA IRRITANS HORN FLY 18 long half the size of a PASTURE FLIES: HAEMATOBIA IRRITANS (HORN FLY) ~1/8" long - half the size of a](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-18.jpg)
PASTURE FLIES: HAEMATOBIA IRRITANS (HORN FLY) ~1/8" long - half the size of a house or stable fly palps almost as long as proboscis
![GASTEROPHILUS INTESTINALISBOT FLY OF HORSE Egg Horse hair Larva Horse Tongue and Stomach Pupa GASTEROPHILUS INTESTINALISBOT FLY OF HORSE Egg Horse hair Larva Horse Tongue and Stomach Pupa](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-19.jpg)
GASTEROPHILUS INTESTINALISBOT FLY OF HORSE Egg Horse hair Larva Horse Tongue and Stomach Pupa Pasture Soil Adult female Near horses
![CTENOCEPHALIDES FELIS CAT FLEA Eggs Hair of cat or dog Larva Floor cracks rugs CTENOCEPHALIDES FELIS- CAT FLEA Eggs Hair of cat or dog Larva Floor cracks, rugs,](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-20.jpg)
CTENOCEPHALIDES FELIS- CAT FLEA Eggs Hair of cat or dog Larva Floor cracks, rugs, carpets and animal bedding Pupae Silk cocoons Adult Hair of dog or cat
![ANOPLURA SUCKING LICE Egg Hair of swine cattle or others Nymph Skin of ANOPLURA – SUCKING LICE Egg Hair of swine, cattle or others Nymph Skin of](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-21.jpg)
ANOPLURA – SUCKING LICE Egg Hair of swine, cattle or others Nymph Skin of swine or cattle Adult Skin of swine or cattle
![MALLOPHAGA CHEWING LICE Egg Nymph Adult on feathers of birds primarily or hair MALLOPHAGA - CHEWING LICE Egg Nymph Adult on feathers of birds (primarily) or hair](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-22.jpg)
MALLOPHAGA - CHEWING LICE Egg Nymph Adult on feathers of birds (primarily) or hair of mammals
![Ancylostoma caninum Eggs Dog feces Adults Anemic Puppy Small intestine of dogs Larva Dog Ancylostoma caninum Eggs Dog feces Adults Anemic Puppy Small intestine of dogs Larva Dog](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-23.jpg)
Ancylostoma caninum Eggs Dog feces Adults Anemic Puppy Small intestine of dogs Larva Dog feces/soil penetrate skin Larva transmitted to pups in milk
![STRONGYLUS VULGARIS LARGE STRONGYLE OF THE HORSE Eggs Feces of horse Larvae Found STRONGYLUS VULGARIS – LARGE STRONGYLE OF THE HORSE Eggs Feces of horse Larvae Found](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-24.jpg)
STRONGYLUS VULGARIS – LARGE STRONGYLE OF THE HORSE Eggs Feces of horse Larvae Found in soil, are ingested go to the intestine crawl out of intestine travel to the blood vessels develop for months then return to intestine as adults Adult cecum and colon of horse
![STEPHANURUS DENTATUS KIDNEY WORM Egg OF SWINE Passed through urine Larvae Direct ingestion STEPHANURUS DENTATUS - KIDNEY WORM Egg OF SWINE Passed through urine Larvae Direct: ingestion](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-25.jpg)
STEPHANURUS DENTATUS - KIDNEY WORM Egg OF SWINE Passed through urine Larvae Direct: ingestion or skin penetration of larvae Indirect: earthworms Adult Once inside, larvae migrate to the liver. Eventually they migrate through the peritoneal cavity and encyst in the perirenal fat near kidneys and mature to adults.
![STRONGYLOIDES WESTERI INTESTINAL THREADWORMS OF HORSE Eggadult female lives in small intestines of foals STRONGYLOIDES WESTERI INTESTINAL THREADWORMS OF HORSE Egg-adult female lives in small intestines of foals](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-26.jpg)
STRONGYLOIDES WESTERI INTESTINAL THREADWORMS OF HORSE Egg-adult female lives in small intestines of foals Larvated eggs passed in feces Larva Skin penetration, or passed in milk to young foals Adult female Small intestine of foals
![DIROFILARIA IMMITISHEARTWORM Microfilaria OF DOGS Larva Blood Mosquito Adults Heart DIROFILARIA IMMITISHEARTWORM Microfilaria OF DOGS Larva Blood Mosquito Adults Heart](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-27.jpg)
DIROFILARIA IMMITISHEARTWORM Microfilaria OF DOGS Larva Blood Mosquito Adults Heart
![TOXOCARA CANIS ROUND WORM OF DOGS Egg Soil contaminated with feces Egg containing larva TOXOCARA CANIS- ROUND WORM OF DOGS Egg Soil contaminated with feces Egg containing larva](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-28.jpg)
TOXOCARA CANIS- ROUND WORM OF DOGS Egg Soil contaminated with feces Egg containing larva eaten by dog Larva Egg hatches canine intestinal tract Larva goes to lungs, then tissues uterus if the dog is pregnant, or mammary glands if host recently whelped Adults Canine intestine where they mate.
![TRICHURIS VULPISWHIPWORM Egg Ingested by dog and hatch in small intestine Larva Penetrate into TRICHURIS VULPISWHIPWORM Egg Ingested by dog and hatch in small intestine Larva Penetrate into](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-29.jpg)
TRICHURIS VULPISWHIPWORM Egg Ingested by dog and hatch in small intestine Larva Penetrate into the intestinal wall of dog, then re-enter the lumen after 2 -10 days, then passes down to the dog’s cecum Adult Mucosa of cecum and large intestine in dog
![DIPYLIDIUM CANINUMTAPEWORM DOG AND CAT Egg ingested by larvae flea Egg basket DogCat feces DIPYLIDIUM CANINUMTAPEWORM DOG AND CAT Egg ingested by larvae flea Egg basket Dog/Cat feces](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-30.jpg)
DIPYLIDIUM CANINUMTAPEWORM DOG AND CAT Egg ingested by larvae flea Egg basket Dog/Cat feces Adult Dog/cat small intestine
![TAENIA PISIFORMIS DOG TAPEWORM Proglottids When the dog eats the rabbit they begin to TAENIA PISIFORMIS- DOG TAPEWORM Proglottids When the dog eats the rabbit they begin to](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-31.jpg)
TAENIA PISIFORMIS- DOG TAPEWORM Proglottids When the dog eats the rabbit they begin to form in the small intestine Larvae Burrows through the intestinal wall and travels to the liver via the blood Eggs Eliminated in feces and ingested by a rabbit and hatches in small intestine
![FASCIOLA HEPATICA LIVER FLUKE OF CATTLE AND SHEEP Egg Cercariae Miracidium Feces Snail FASCIOLA HEPATICA - LIVER FLUKE OF CATTLE AND SHEEP Egg Cercariae Miracidium Feces Snail](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-32.jpg)
FASCIOLA HEPATICA - LIVER FLUKE OF CATTLE AND SHEEP Egg Cercariae Miracidium Feces Snail Adult Metacercariae Liver Vegetation
![GIARDIA INTESTINALIS Cyst Trophozite Found in feces of many animal GIARDIA INTESTINALIS Cyst Trophozite Found in feces of many animal](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-33.jpg)
GIARDIA INTESTINALIS Cyst Trophozite Found in feces of many animal
![ISOSPORA DOG AND CAT PROTOZOA Oocyst Feces Sporulated oocyst environment eaten by dog or ISOSPORA- DOG AND CAT PROTOZOA Oocyst Feces Sporulated oocyst environment eaten by dog or](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-34.jpg)
ISOSPORA- DOG AND CAT PROTOZOA Oocyst Feces Sporulated oocyst environment eaten by dog or cat merogony, gamogony, syngamy in intestinal epithelial cells
![GOT PARASITES WHAT SHOULD WE DO KILLUM ALL Maybe not Control disease live with GOT PARASITES WHAT SHOULD WE DO? KILLUM ALL! Maybe not? Control disease, live with](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-35.jpg)
GOT PARASITES WHAT SHOULD WE DO? KILLUM ALL! Maybe not? Control disease, live with the enemy Parasites like bacteria evolve to become resistant to the agents that were very effective against them Parasites stimulate a protective immune response if no exposure no protection
![USE OF ANTHELMINTICS OR PESTICIDES Treat them what needs it A Sick animals Disease USE OF ANTHELMINTICS OR PESTICIDES Treat them what needs it A. Sick animals: Disease](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-36.jpg)
USE OF ANTHELMINTICS OR PESTICIDES Treat them what needs it A. Sick animals: Disease may be clinical or economic B. At risk animals ie. young animals weaning or making a living from pasture C. Those animals under stress ie. First calf heifers D. When conditions are becoming suitable for transmission ie. high exposure to parasites following wet warm weather conditions E. Those with the most worms (20% of the herd has 80% of the worms) Make sure the drug works where you are using it (worms can’t read the label) .
![EVALUATION OF WORM NUMBERS EGG COUNTS OR ANEMIA Count the number of eggs in EVALUATION OF WORM NUMBERS; EGG COUNTS OR ANEMIA Count the number of eggs in](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-37.jpg)
EVALUATION OF WORM NUMBERS; EGG COUNTS OR ANEMIA Count the number of eggs in a portion of feces expressed in eggs / gram feces > 2, 000 treat Anemia: Associated with numbers and persistence of infection with Haemonchus Proportion of erythrocytes (red blood cells) in blood Color of mucous membranes: pink or white guess? FAMACHA color chart
![SELECTIVE TREATMENT FAMACHA SELECTIVE TREATMENT FAMACHA](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-38.jpg)
SELECTIVE TREATMENT FAMACHA
![USE OF ANTHELMINTIC COMBINATIONS Widely used in some countries has been used in US USE OF ANTHELMINTIC COMBINATIONS Widely used in some countries has been used in US](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-39.jpg)
USE OF ANTHELMINTIC COMBINATIONS Widely used in some countries has been used in US to some success Problem in Australia now uses combination of ivermectin, albendazole and levamisole Will fail unless 100% effective; We have succeeded in producing super Super worms on some farms Super worms are more widely available than refugia worms
![MANAGEMENT PROCEDURES TO STOP REDUCE OR REMOVE RESISTANT WORMS FROM A FARM Strategic treatment MANAGEMENT PROCEDURES TO STOP, REDUCE OR REMOVE RESISTANT WORMS FROM A FARM Strategic treatment](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-40.jpg)
MANAGEMENT PROCEDURES TO STOP, REDUCE OR REMOVE RESISTANT WORMS FROM A FARM Strategic treatment with effective anthelmintic in winter (lambing or kidding) Use dry lots, annual pastures, crop (hay) aftermath for susceptible animals Have resistant animals harvest pastures after susceptible animals, do not treat these animals as the survivor worms will become the refugia
![BOVINE BABESIOSIS The first dean of the College of Veterinary Medicine Dr Mark Francis BOVINE BABESIOSIS The first dean of the College of Veterinary Medicine Dr. Mark Francis](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-41.jpg)
BOVINE BABESIOSIS The first dean of the College of Veterinary Medicine Dr. Mark Francis came to Texas because of a tick transmitted parasitic disease "Texas Cattle Fever" Babesia bigemina
![FEVER TICK CONTROL Dr Francis showed killing ticks prevented transmission Dipping cattle every two FEVER TICK CONTROL Dr. Francis showed killing ticks prevented transmission Dipping cattle every two](https://slidetodoc.com/presentation_image_h/1eceb5a886ee84e208a1e58b22e166d1/image-42.jpg)
FEVER TICK CONTROL Dr. Francis showed killing ticks prevented transmission Dipping cattle every two weeks eradicated ticks by 1940's: they are back! Situation 2012
Java critter strategy
Grid critters
Grid critters
Sarcomastigophora are unicellular immotile parasites
Parasites alimentaires
Kato katz technique
Classification of parasites
Guinea worm
Curezone parasites
Parasites of livestock vocabulary
Herbivores carnivores omnivores scavengers decomposers
Multicellular animal parasites
Parasite introduction
Iodomoeba
Hematouria
Embryo development
Bilateral symmetry worm
Parasites
Parasites of medical importance
Parasite
Enslaver parasites
Polyphyletic group
Internal and external parasites
3 example of parasitism
Ookinite
What do parasites eat
Faciola
Bacteria virus fungi and parasites
Bankers are parasites