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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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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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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

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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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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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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

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Haemonchus
Haemonchus

Eyelid membranes will go pale or white with anaemia

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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

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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

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3-coccidiosis-beef-calves-sudden-diarrho

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Coccidiosis
Coccidiosis

Blood or mucus in faeces

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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

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Liver Fluke
Liver Fluke

lifecycle

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Liver Fluke
Liver Fluke

infected liver on the left

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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

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Lungworm
Lungworm

worms in trachea

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Lungworm
Lungworm

runny nose

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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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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