Two tooth ewes - pregnant
After lambs and weaners, pregnant maiden ewes are the next most susceptible sheep to worms on a property. While their immune system has developed to a certain degree, the demands of pregnancy and lambing increase their susceptibility to worms. Good nutrition will:

• Strengthen their immune system
• Increase growth rates
• Increase fleece weights, staple tensile strength and lambing marking percentages.

The ewes should have regular worm egg counts and especially just before lambing and lamb marking. Lambing paddocks should be prepared several months beforehand to ensure that they are low worm risk.

Two tooth ewes (not pregnant)
These sheep have started to develop active immune systems that help them repel worms. Good nutrition will:

• Strengthen their immune system
• Increase growth rates
• Increase fleece weights, staple tensile strength and conception rates at the first joining.

It is important to create low worm-risk pastures for these sheep.

Two tooth wethers
This group of sheep and two tooth ewes (not pregnant) has started to develop active immune systems that help them repel worms. Good nutrition will:

• Strengthen their immune system
• Increase growth rates
• Increase fleece weights and staple tensile strength.

These sheep should have regular worm egg counts. It is important to create low worm-risk pastures for them.