Items where Author is "O'Rourke, P.K."

1997

Sullivan, R.M. and O'Rourke, P.K. (1997) A comparison of once- and twice-yearly weaning of an extensive herd in northern Australia 1. Cow liveweights, mortalities and fertility. Australian Journal of Experimental Agriculture, 37 (3). pp. 279-286. https://doi.org/10.1071/EA95097

Sullivan, R.M., O'Rourke, P.K. and Neale, J.A. (1997) A comparison of once- and twice-yearly weaning of an extensive herd in northern Australia 2. Progeny growth and heifer productivity. Australian Journal of Experimental Agriculture, 37 (3). pp. 287-293. https://doi.org/10.1071/EA95098

1996

Fordyce, G., Howitt, C.J., Holroyd, R.G., O'Rourke, P.K. and Entwistle, K.W. (1996) The performance of Brahman-Shorthorn and Sahiwal-Shorthorn beef cattle in the dry tropics of northern Queensland. 5. Scrotal circumference, temperament, ectoparasite resistance, and the genetics of growth and other traits in bulls. Australian Journal of Experimental Agriculture, 36 (1). pp. 9-17. https://doi.org/10.1071/EA9960009

1995

O'Rourke, P.K., Fordyce, G., Holroyd, R.G. and Loxton, I.D. (1995) Mortality, wastage, and lifetime productivity of Bos indicus cows under extensive grazing in northern Australia. 1. Seasonal mating in the speargrass region. Australian Journal of Experimental Agriculture, 35 (3). pp. 285-295. https://doi.org/10.1071/EA9950285

O'Rourke, P.K., Sullivan, R.M. and Neale, J.A. (1995) Mortality, wastage, and lifetime productivity of Bos indicus cows under extensive grazing in northern Australia. 2. Continuous mating in the semi-arid tropics. Australian Journal of Experimental Agriculture, 35 (3). pp. 297-305. https://doi.org/10.1071/EA9950297

O'Rourke, P.K., Fordyce, G., Holroyd, R.G. and Sullivan, R.M. (1995) Mortality, wastage, and lifetime productivity of Bos indicus cows under extensive grazing in northern Australia. 3. Comparison of culling strategies. Australian Journal of Experimental Agriculture, 35 (3). pp. 307-316. https://doi.org/10.1071/EA9950307

1993

Fordyce, G., James, T.A., Holroyd, R.G., Beaman, N.J., Mayer, R. J. and O'Rourke, P.K. (1993) The performance of Brahman-Shorthorn and Sahiwal-Shorthorn beef cattle in the dry tropics of northern Queensland. 3. Birth weights and growth to weaning. Australian Journal of Experimental Agriculture, 33 (2). pp. 119-127. https://doi.org/10.1071/EA9930119

1990

Holroyd, R.G., James, T.A., Doogan, V.J., Fordyce, G. and O'Rourke, P.K. (1990) The performance of Brahman-Shorthorn and Sahiwal-Shorthorn beef cattle in the dry tropics of northern Queensland. 1. Reproductive rates and liveweights of F1 and backcross females. Australian Journal of Experimental Agriculture, 30 (6). pp. 717-725. https://doi.org/10.1071/EA9900717

Holroyd, R.G., James, T.A., Doogan, V.J., Fordyce, G., Tyler, R. and O'Rourke, P.K. (1990) The performance of Brahman-Shorthorn and Sahiwal-Shorthorn beef cattle in the dry tropics of northern Queensland. 2. Reproductive rates and liveweights of F2et seq. females. Australian Journal of Experimental Agriculture, 30 (6). 727 -733. https://doi.org/10.1071/EA9900727

1989

O'Rourke, P.K. and Howitt, C.J. (1989) Validation of genetic parameters for breeding Bos indicus cross cattle in the dry tropics. Project Report. Meat Research Corporaton.

1988

Dodt, R.M. and O'Rourke, P.K. (1988) Dentition in beef cattle in northern Australia. Queensland Journal of Agricultural and Animal Sciences, 45 (1). pp. 53-56.

1980

Holroyd, R.G. and O'Rourke, P.K. (1980) Reproductive performance of F1 brahman-shorthorn and F1 Sahiwal-shorthorn cattle in northern Australia. In: Animal Production in Australia: The Australian Society of Animal Production. Thirteenth Biennial Conference., August, Perth, Western Australia,.

1976

Ernst, A.J., Limpus, J.F., O'Rourke, P.K. and Loxton, I.D. (1976) The effect of biuret grain and a mineral mixture on the intake and liveweight performance of steers. Queensland Journal of Agricultural and Animal Sciences, 33 (2). pp. 213-221.

Armstrong, R.T.F. and O'Rourke, P.K. (1976) The effect of pregnancy and lactation on wool weight in a commercial Merino flock in southern Queensland. Queensland Journal of Agricultural and Animal Sciences, 33 (1). pp. 9-11.