Libido testing and subsequent mating performance in rams
R.W. Kelly, A.J. Allison and G.H. Shackell
Invermay Agricultural Research Centre, Mosgiel
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Proceedings of the New Zealand Society of Animal Production. 1975, 35: 204-211
The performance of eight 1½-year -old and twenty-five
2½ to 3½-year-old Romney rams and eight 2½ to
3½-year-old Cheviot rams, in pen and paddock libido tests, and their
flock mating performances at different ram:ewe ratios was recorded. All
rams except one Cheviot were sexually active in the libido tests. There
was no effect of age or breed of ram on their performance in the pen
libido tests, and there was no difference between the performances of
the rams in two pen libido tests conducted two weeks and one week prior
to the commencement of flock mating. Variation between rams in flock
mating performance, measured by the percentage of total ewes that were
marked by each particular ram, could not be accounted for by variation
in ram:ewe ratio, age or breed of ram, or any of the libido criteria
measured.
Keywords: NZSAPAB;
Last Updated 24-08-2000
