Track the date the service sire was put in and taken out for the breeding
flock or each ewe - This data will be used for the development of an accelerated lambing EPD in the future.
Birth Wt - Not technically required, but very useful. Highly recommended.
This allows the 60 day growth potential to be calculated with much more accuracy.
60 day wt - This wt does not need to be taken exactly on 60 days. The key
requirements are: before weaning and between 45 & 90 days of age.
Weaning wt – If you do not wean at 60 days of age, you will also need to
collect a separate weaning wt.
Postweaning wt - This wt does not need to be taken at exactly 120 days of
age. The key requirements are: at least 30 days after the weaning wt. and between 90 and 150 days of age.
Tracking rearing conditions - Track which lambs are bottle fed, which
lambs are grafted on to another ewe, which ewe they are grafted on to, when lambs die, which are stillborn, which ewes
abort, which pen/pasture they are raised in. It is very important to track groups of lambs that are treated differently
from other groups of lambs. Ewes and l
Optional - FEC-EPD - Fecal Egg Count - Expected Progeny Difference. If you
are interesting in being involved in identifying Katahdin sires that have lambs with superior parasite resistance,
contact Jim Morgan.
Management of flock - For the most accurate NSIP evaluation, manage so
that all your lambs are in the same pen, fed together, weaned together and thus can be directly compared. Managing all
lambs in one pen is not always practical.