@conference {40268,
	title = {Biochemical mechanisms related to overfatness in lambs},
	booktitle = {Proceedings of the New Zealand Society of Animal Production},
	volume = {50},
	year = {1990},
	month = {Jan},
	pages = {479-482},
	publisher = {New Zealand Society of Animal Production},
	organization = {New Zealand Society of Animal Production},
	abstract = {A mechanistic model was used to measure the impact of changes in  climate (temperature, rainfall and solar radiation) and a 75\% increase  in the concentration of atmospheric carbon dioxide on pasture and animal  production on eight representative New Zealand lowland farming systems.  The climate changes increased annual pasture dry matter production per  hectare by 10-30\%, assuming no changes in pasture composition. A 75\%  increase in CO2 concentration increased pasture production by around  40\%. Together, climate change and increased CO2 concentration increased  yields by 50-77\%. In all cases, the seasonal distribution of pasture  production was not greatly affected. Both climate change and increased  CO2 concentration individually increased annual milk production per  hectare by around 24\%, lamb meat and beef by around 30\% and wool by  around 22\%, under the constant farm management systems selected. The  increases in production were mainly due to increases in stocking rate  resulting from the increased pasture production, but increased  conservation and feeding out of hay were required. The model predicted  an increase in lamb growth rates. Milk, meat and wool production was  higher under climate change than under increased CO2 concentration in  Southland, but the opposite was true in northern New Zealand. The  combined effect of climate change and increased CO2 concentration was  greater, with potential increases over the two scenarios averaging 52\%  for milk, 57\% for lamb and beef and 46\% for wool.  },
	issn = {1176-5283},
	author = {Payne E}
}
