title: A mathematical optimisation model of a New Zealand dairy farm: The integrated dairy enterprise (IDEA) framework

authors: Doole, Graeme J.

subjects: dairy production

abstract: Optimisation models are a key tool for the analysis of emerging policies, price sets, and technologies within grazing systems. A detailed nonlinear optimisation model of a New Zealand dairy farming system is described. The framework is notable for its rich portrayal of pasture and cow biology that add substantial descriptive power to standard approaches. Key processes incorporated in the model include: (1) pasture growth and digestibility that differ with residual pasture mass and rotation length, (2) pasture utilisation that varies by stocking rate, and (3) different levels of intake regulation. Model output is shown to closely match data from a more detailed simulation model (deviations between 0 and 5 per cent) and survey data (deviations between 1 and 11 per cent), providing confidence in its predictive capacity. Use of the model is demonstrated in an empirical application investigating the relative profitability of production systems involving different amounts of imported feed under price variation. The case study indicates superior profitability associated with the use of a moderate level of imported supplement, with Operating Profit ($NZ ha-1) of 934, 926, 1186, 1314, and 1093 when imported feed makes up 0, 5, 10, 20 and 30 per cent of the diet, respectively. Stocking rate and milk production per cow increase by 35 and 29 per cent, respectively, as the proportion of imported feed increases from 0 to 30 per cent of the diet. Pasture utilisation increases with stocking rate. Accordingly, pasture eaten and nitrogen fertiliser application increase by 20 and 213 per cent, respectively, as the proportion of imported feed increases from 0 to 30 per cent of the diet.

text: A mathematical optimisation model of a New Zealand dairy farm: The integrated dairy enterprise (IDEA) framework Optimisation models are a key tool for the analysis of emerging policies, price sets, and technologies within grazing systems. A detailed nonlinear optimisation model of a New Zealand dairy farming system is described. The framework is notable for its rich portrayal of pasture and cow biology that add substantial descriptive power to standard approaches. Key processes incorporated in the model include: (1) pasture growth and digestibility that differ with residual pasture mass and rotation length, (2) pasture utilisation that varies by stocking rate, and (3) different levels of intake regulation. Model output is shown to closely match data from a more detailed simulation model (deviations between 0 and 5 per cent) and survey data (deviations between 1 and 11 per cent), providing confidence in its predictive capacity. Use of the model is demonstrated in an empirical application investigating the relative profitability of production systems involving different amounts of imported feed under price variation. The case study indicates superior profitability associated with the use of a moderate level of imported supplement, with Operating Profit ($NZ ha-1) of 934, 926, 1186, 1314, and 1093 when imported feed makes up 0, 5, 10, 20 and 30 per cent of the diet, respectively. Stocking rate and milk production per cow increase by 35 and 29 per cent, respectively, as the proportion of imported feed increases from 0 to 30 per cent of the diet. Pasture utilisation increases with stocking rate. Accordingly, pasture eaten and nitrogen fertiliser application increase by 20 and 213 per cent, respectively, as the proportion of imported feed increases from 0 to 30 per cent of the diet.

year: 2012-04

title: The changing professional development needs of the international work-integrated learning community

authors: Zegwaard, Karsten E.

abstract: The practice of work-integrated learning (WIL) continues to expand across the higher education sector, with many universities introducing or expanding their WIL offerings to align curriculum more closely to employability outcomes (Rowe & Zegwaard, 2017). Universities in Australia have rapidly developed WIL, with all universities offering WIL in almost all the disciplines (Universities Australia, 2019). In New Zealand, WIL has been given increasing attention with the Universities NZ, the peak body for NZ universities, DVCA’s Committee creating a WIL sub-committee to develop national strategy, and with the University of Waikato introducing compulsory WIL for all undergraduates degrees (Muller et al., 2021). The Canadian government recognised WIL as crucial to economic advancement and provided CAD$150 million to support work placement opportunities (Beaulne-Stuebing, 2019).

text: The changing professional development needs of the international work-integrated learning community The practice of work-integrated learning (WIL) continues to expand across the higher education sector, with many universities introducing or expanding their WIL offerings to align curriculum more closely to employability outcomes (Rowe & Zegwaard, 2017). Universities in Australia have rapidly developed WIL, with all universities offering WIL in almost all the disciplines (Universities Australia, 2019). In New Zealand, WIL has been given increasing attention with the Universities NZ, the peak body for NZ universities, DVCA’s Committee creating a WIL sub-committee to develop national strategy, and with the University of Waikato introducing compulsory WIL for all undergraduates degrees (Muller et al., 2021). The Canadian government recognised WIL as crucial to economic advancement and provided CAD$150 million to support work placement opportunities (Beaulne-Stuebing, 2019).

year: 2022-09

title: Te Arawa– Kaitaki of Te Arawa Lakes

authors: Curtis, Sir Toby

abstract: The Te Arawa Lakes Trust has embarked on a project to develop a Te Arawa Cultural Values Framework, in regard to the 14 lakes located in our tribal region. There are a host of positives that we believe can accrue as an outcome of this exercise. Already the calibre of people acknowledged for their cultural expertise have added a lot by their attendance. Their presence and contribution injected a level of enthusiasm and confidence in the compilation of the final draft. It is hoped that distribution among the wider community will elicit constructive feedback.

text: Te Arawa– Kaitaki of Te Arawa Lakes The Te Arawa Lakes Trust has embarked on a project to develop a Te Arawa Cultural Values Framework, in regard to the 14 lakes located in our tribal region. There are a host of positives that we believe can accrue as an outcome of this exercise. Already the calibre of people acknowledged for their cultural expertise have added a lot by their attendance. Their presence and contribution injected a level of enthusiasm and confidence in the compilation of the final draft. It is hoped that distribution among the wider community will elicit constructive feedback.

year: 2015