If they are not at that weight and condition, it is less likely they will be cycling, and it is unlikely they will get in-lamb.“Ewe lambs need to be closely managed to get to the target weight and condition, with growth rates realistically 150g to 200g/day off grass currently. This is why it is important to manage the general health of these animals well to maximise their growth rates." Dr. Genever advises all sheep producers to conduct regular faecal egg counts this autumn. Adding to this, she said: “The general health management of these animals is essential to maintain their growth rates. "Ewe lambs are still developing immunity to worms and if they go through a period of nutritional stress due to a lack of grass, for example, their immunity may drop. Worms can severely impact lamb growth rates when they are not managed," she concluded.