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cows

&PARASITES

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From 'House Cows' providing the family's milk to rare breed stud bulls, cattle form a key role on the smallholding. But there is a world of parasites in your grazing keen to infect your precious cows.

Good parasite control can increase the quality of cows you sell, improve their growth & feed conversion rate and substantially increase their milk yield. Over-do your wormer use and you'll just breed resistance.

Recommended cow FEC testing frequency: every 3 months

Highest risk periods: after flooding, grazing beside waterways

Cost of WEC test: £12.50 up to 5 samples

This can be a mix&match of species across the farm

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IMG_20210209_094927

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images

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IMG_20210209_094927

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ascarids

aka the Roundworms:

Ascaris suum

 

SYMPTOMS

Stunted growth

Coughing

Weight loss

Intestinal obstruction

Jaundice & liver failure

Low kill weight & rejected livers due to 'milk spots' - white scars from larval migration through the liver & the lungs 

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IMG_20210209_095917

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IMG_20210209_095053

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IMG_20210209_095917

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WHIPWORM

aka Trichuris suis

SYMPTOMS

Stunting

Bloody, mucoid diarrhoea

Rectal prolapse

Low kill weight, very poor feed conversion rates

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IMG_20210209_100149

IMG_20210209_100149
IMG_20210209_100149

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Nodular Worm

aka Oesophagostomum dentatum

SYMPTOMS

Nodules in the intestines

Poor body condition

Diarrhoea

Condemnation of the intestines at abattoir

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coccidiosis-piglet-diarrhea-1608

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coccidiosis-piglet-diarrhea-1608

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coccidia 

aka Coccidiosis:

Eimeria, Isospora

SYMPTOMS

Mainly affects piglets:

Diarrhoea (often pasty)

Blood & mucus in faeces

Skinny 

Permanent gut damage

Healthy adults will often have coccidia in their faeces - interpret positive samples with care before using a coccidiostat

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image009

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image009

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ROUNDWORMS

aka the Nematodes:

Ostertagia (the brown stomach worm), Trichostrongylus axei (the small stomach worm),  Cooperia, Oesophagostomum (the nodular worm), trichostrongylus colubriformis (hair worm / black scour worm)

SYMPTOMS

Diarrhoea

Lower milk production

Poor condition

Slow growth rate

Midline or jaw oedema

Death

Haemonchus
Haemonchus

Pale membranes due to anaemia

Haemonchus
Haemonchus

Eyelid membranes will go pale or white with anaemia

Haemonchus
Haemonchus

Pale membranes due to anaemia

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haemonchus

aka Barbers Pole Worm:

Haemonchus contortus

SYMPTOMS

Anaemia

Weight Loss

Lethargy

Sudden death

Normal Poos

Tapeworm
Tapeworm

Segments passed in poo

Tapeworm
Tapeworm

Segments passed in poo

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tapeworm

aka the Cestodes:

Monezia, Thysanosoma

SYMPTOMS

Look horrible when wriggling out - but surprisingly harmless!

Heavy burdens in calves cause:

Anorexia

Reduced gut motility

Gut rupture & peritonitis

3-coccidiosis-beef-calves-sudden-diarrho
3-coccidiosis-beef-calves-sudden-diarrho

Coccidiosis
Coccidiosis

Blood or mucus in faeces

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3-coccidiosis-beef-calves-sudden-diarrho

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coccidia 

aka Coccidiosis:

Eimeria

SYMPTOMS

Mainly affects calves:

Diarrhoea (often pasty)

Blood & mucus in faeces

Skinny & weak

Abdominal Pain

Permanent gut damage

Healthy adults will often have coccidia in their faeces - interpret positive samples with care before using a coccidiostat

Liver Fluke
Liver Fluke

Seasonal changes

Liver Fluke
Liver Fluke

lifecycle

Liver Fluke
Liver Fluke

infected liver on the left

Liver Fluke
Liver Fluke

Seasonal changes

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LIVER FLUKE

aka Fasciola:

Fasciola hepatica, Fascioloides magna

SYMPTOMS

Anorexia & depression

Weakness & dry faeces

Increased respiratory rate

Ascites (belly fluid)

Colic

Sudden death

repiratoryadultcattle-4
repiratoryadultcattle-4

nasal discharge

Lungworm
Lungworm

worms in trachea

Lungworm
Lungworm

runny nose

repiratoryadultcattle-4
repiratoryadultcattle-4

nasal discharge

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LUNGWORMS

Dictyocaulus viviparus

SYMPTOMS

Young Animals:

Cough, blue membranes (cyanosis), difficulty breathing

Adults:

Cough

Nasal discharge

Increased respiratory rate

Poor condition

Weight loss

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12+Sep+356

cysts form around the organs

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12+Sep+356

cysts form around the organs

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whipworm

Trichuris ovis

SYMPTOMS

Mainly asymptomatic

large numbers rarely cause haemorrhage into the caecum:

depression, collapse, aneamia, sudden death

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5a6e0a6170918.image

yellow pasty diarrhoea in very young lambs

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5a6e0a6170918.image

yellow pasty diarrhoea in very young lambs

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nematodirus

aka Nematodirus battus, Nematodirus filicollis

SYMPTOMS

Mainly a problem in lambs, but cows can be a host and infest grazing intended for sheep