References
- Anonymous Agricultural Production Statistics 2002 Statistics New Zealand Wellington, , NZ 2003
- Anonymous Understanding Estimated Breeding Values (EBVs) Angus Society of Australia Armidale, , Australia 2007 http://angusaustralia.com.au/BP_Understanding_EBVs.htm#CALVING_EASE (accessed 19 June 2008)
- Bryant , JR , Holmes , CW , Lopez-Villalobos , N , McNaughton , LR , Brookes , IM , Verkerk , GA and Pryce , JE . 2004 . Use of breeding values for live weight to calculate individual live weight targets for dairy heifers . Proceedings of the New Zealand Society of Animal Production , 64 : 118 – 121 .
- Carter , AH and Cox , EH . 1973 . Observations on yearling mating of beef cattle . Proceedings of the New Zealand Society of Animal Production , 33 : 94 – 112 .
- Dargatz , DA , Dewell , GA and Mortimer , RG . 2004 . Calving and calving management of beef cows and heifers on cow-calf operations in the United States . Theriogenology , 61 : 997 – 1007 .
- Fielden , ED and McFarlane , D . 1959 . Some aspects of the Gisborne beef cattle fertility survey . Sheepfarming Annual , 22 : 29 – 39 .
- Hanly , GJ and Mossman , DH . 1977 . Commercial beef production on hill country . New Zealand Veterinary Journal , 25 : 3 – 7 .
- Hickson , RE , Morris , ST , Kenyon , PR and Lopez-Villalobos , N . 2006 . Dystocia in beef heifers: a review of genetic and nutritional influences . New Zealand Veterinary Journal , 54 : 255 – 264 .
- Hodge , PB , Wood , SJ , Newman , RD and Shepherd , RK . 1982 . Effect of calving supervision upon the calving performance of Hereford heifers . Australian Veterinary Journal , 58 : 97 – 100 .
- Kenyon , PR , Morris , ST , Perkins , NR and West , DM . 2004 . Hogget mating in New Zealand — asurvey . Proceedings of the New Zealand Society of Animal Production , 64 : 217 – 222 .
- McMillan , WH and McCall , DG . 1991 . Are yearling heifer mating and more productive beef cow breeds a worthwhile use of winter feed? . Proceedings of the New Zealand Society of Animal Production , 51 : 265 – 269 .
- Meijering , A . 1984 . Dystocia and stillbirth in cattle: a review of causes, relations and implications . Livestock Production Science , 11 : 143 – 177 .
- Morris , CA and Archer , JA . 2007 . Application of new technologies in New Zealand for beef cattle and deer improvement . New Zealand Journal of Agricultural Research , 50 : 163 – 179 .
- Morris , CA , Baker , RL and Bennett , GL . 1986 . Some genetic and non-genetic effects on the first oestrus and pregnancy rate of beef heifers . Proceedings of the New Zealand Society of Animal Production , 46 : 71 – 75 .
- Parminter , TG , Power , MPB and Shaw , DC . 1993 . The effects on adoption of beef breeding cow technologies of selected farm business standards, farmer demographics, and farmer beliefs . Proceedings of the New Zealand Society of Animal Production , 53 : 121 – 125 .
- Rice , LE . 1994 . Dystocia-related risk factors . Veterinary Clinics of North America, Food Animal Practice , 10 : 53 – 68 .
- Thomas , CW , Campbell , AC and Bywater , AC . 2007 . A benchmarking survey of commercial beef cow production Canterbury 2004–05 . Proceedings of the 37th Annual Seminar of the Society of Sheep and Beef Cattle Veterinarians of the New Zealand Veterinary Association , : 69 – 79 .
- Wythes , JR , Strachan , RT and Durand , MRE . 1976 . A survey of dystocia in beef cattle in southern Queensland . Australian Veterinary Journal , 52 : 570 – 574 .
- Young , JS . 1965 . Infertility in range cattle . New Zealand Veterinary Journal , 13 : 1 – 10 .