Film shows effects, behaviour, prevention and treatment of worms in sheep.
Film opens in livestock market with sheep. Diagram of Parasitic gastro-enteritis. In the laboratory worms shown including tape worm. Sheep flock, some with symptoms.
Symptoms illustrated including loss of wool bloom, anaemia, and diarrhoea, leading to death in extreme cases.
Diagram of worm life cycle, eggs developed in laboratory, weather conditions. Vet collecting samples.
Post mortem examination of sheep shown in detail.
Weather studies experiments shown.
Different types of land management shown to prevent worms including mixed grazing, rotational grazing, forward grazing and back fence.
Wormers shown and administered in different ways.
Central Office of Information for Ministry of Agriculture, Fisheries and Food
National Interest Picture Productions Ltd
Produced and directed by A E C Hopkins
Camera Cedric Williams
Script C Millett
Animation Brian Stephens
Edited by John Beaton