The productive performance of Waihora Romney cross hogget and
two-tooth ewes and commercial Romneys
M.T. Johnston; R.W. Kelly and R.R. Webb
Department of Lands and Survey, Seacliff; Invermay Agricultural
Research Centre, Mosgiel and Donnelly's Crossing, Dargaville
Proceedings of the New Zealand Society of Animal Production.
1982, 42: 47-50
The performance of ~400 Waihora Romney x Romney (W x R) F1 ewes
born in both 1977 and 1978, and ~150 W x R B1 ewes born in both 1979 and
1980, was compared with that of similar numbers of contemporary
commercial Romney (R) ewes. At hogget shearing W x R ewes were
generally heavier (range minus 0.2 to plus 3.9 kg) than R ewes, with
fleece weights differing by minus 0.15 to plus 0.26 kg. As two-tooths W
x R ewes were 1.0 to 2.9 kg heavier than heavier than R ewes, with 7 to
12 more ovulations per 100 ewes and 1 to 5% fewer lamb deaths, producing
10 to 15% more lambs tailed per ewe joined. More W x R wether lambs
were drafted fat than R wether lambs (1979/80 - 77 v 60%; 1980/1 - 98% v
86%).
Keywords: NZSAPAB;
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