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2000
Factors affecting the sex ratio of dairy cattle in New Zealand, ZZ Xu, DI Johnson, and LJ Burton , Proceedings of the New Zealand Society of Animal Production, Volume 60, Hamilton, p.301-302, (2000) , (Full PDF)
1996
Assessment of female traits for genetic improvement of fertility in dairy cattle, T Grosshans, ZZ Xu, and LJ Burton , Proceedings of the New Zealand Society of Animal Production, Volume 56, p.27-31, (1996) , (Full PDF)
Genetic parameters for fertility traits in seasonal dairy cattle, T Grosshans, ZZ Xu, LJ Burton, and DL Johnson , Proceedings of the New Zealand Society of Animal Production, Volume 56, p.38-41, (1996) , (Full PDF)
Reproductive efficiency in lactating dairy cows, ZZ Xu, and LJ Burton , Proceedings of the New Zealand Society of Animal Production, Volume 56, p.34-37, (1996) , (Full PDF)
1995
Reproductive performance of synchronised lactating dairy cows, ZZ Xu, JR Burton, LJ Burton, and KL Macmillan , Proceedings of the New Zealand Society of Animal Production, Volume 55, p.242-244, (1995) , (Full PDF)