Artificial breeding will play a role in accelerating the transition of a proportion of Beef + Lamb New Zealand's (B+LNZ) commercial ewe flock to a low methane emitting flock.
Body Condition Scoring (BCS) pre-tupping allows farmers to identify any ewes that fall outside the optimum BCS 3-4. These can be then managed strategically to either lift or reduce body condition.
This could include running lighter-conditioned ewes on priority pasture or forage crops and/or supplementary feeding.
Numerous studies have shown that ewes with a BCS of 3-4 at lambing give birth to heavier lambs, are better mothers, have more milk and wean heavier lambs with a higher survival rate.
To determine the body condition score, place a hand behind the ewe's 13th rib. Using of the balls of the fingers and thumbs, feel the backbone with the thumb and end of the short ribs with the finger tips behind the last rib.
Feel the muscle and fat cover around the end of the short ribs and backbone.
So, what does BCS3& feel like?
The vertical processes are smooth and rounded; the bone is only felt with pressure. The horizontal processes are also smooth and well-covered; hard pressure with the fingers is needed to find the ends. The loin muscle is full, with a moderate fat cover.
The actual numbers are not as important as consistency, so it is preferable for just one or two people to be doing the scoring.
More information about Body Condition Scoring: https://beeflambnz.com/search?term=Body+Condition+Scoring