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    Dairy deregulation and low-input dairy production: A bioeconomic evaluation
    (Western Agricultural Economics Association, 1999) Tozer PR; Huffaker RG
    Deregulation of the Australian dairy industry could affect the utilization of resources by milk producers and the profitability of dairy production. In this study we examine the feed mix that dairy producers use, both pastures and supplements, under partial and total deregulation. We are particularly interested in the interaction of pasture utilization and farm profitability. The results of this research demonstrate that profitable low-input dairying is constrained by the most limiting resource, feed supplied by pasture, and that the interactions between economic and biological processes are critical to farm profitability.
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    The influence of weather on dairy production : an analysis of the relationship between meteorological variations and fluctuations in dairy production in the Manawatu 1939-1970 : a thesis presented in partial fulfilment of the requirements for the degree of Master of Arts in Geography at Massey University
    (Massey University, 1972) Taylor, Alan Richard
    Preface: In recognition of New Zealand's pastoral potential Sears (1961:65) wrote: "New Zealand has a tremendous climatic advantage for grassland agriculture,... "This is very simply because of New Zealand's great climatic advantage for cheap high-productivity pastures,... "New Zealand's continued, but not extreme, soil moisture, moderate temperatures, and adequate sunlight are all of great value to high-production pasture growth... The New Zealand climate is also very suitable for the continued outdoor husbandry of European breeds of sheep and cattle." It would seem, however, that too few studies have been made of the relationship between climatic situations and primary production in New Zealand. One might offer, in justification of an inquiry into the relationship between climate and dairy production, the importance of dairying to the New Zealand economy. The initial impetus to investigate this relationship was motivated by the author's interest in the farming scene and an appreciation of the importance of climate and weather in agricultural practices. This thesis is essentially an exercise in applied climatology and makes no claim to be anything more. The study is aimed primarily at investigating the impact of measured physical parameters on an agricultural activity. It is hoped that some of the results might be valuable, even if only to stimulate further research into a situation which has been rather too blithely accepted.
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    Supply curves for yields of dairy products from first-lactation Holstein Friesian, Jersey and Holstein Friesian-Jersey crossbred cows accounting for seasonality of milk composition and production
    (New Zealand Society of Animal Production (INC), 2016) Sneddon, NW; Lopez-Villalobos, N; Davis, SR; Hickson, RE; Shalloo, L; Garrick, DJ
    The economic efficiency of a milk-processing system is influenced by seasonality of the milk supply, and changes to milk composition, influences the product potential of that milk. Lactation curves for milk yield and composition for seasonal calving first-lactation Holstein Friesian (F), Jersey (J) and Holstein Friesian-Jersey crossbred (FxJ) cows were used as inputs in a deterministic simulation model to produce seasonal curves for daily yields of dairy products. The dairy products were whole milk powder, skim milk powder, cheese, or butter. Dairy product potential was estimated for each animal from a population of 4333 mixed-breed, first-lactation cows. Lactation lengths differed (P<0.0001), among F, FxJ, and J, which averaged 219, 222 and 221 days respectively. Total-lactation milk yield was different (P<0.0001) among breeds and averaged 3257, 3092 and 2902 litres for F, FxJ and J cows, respectively. Whole-milk powder potential (yield per 1000 L of milk) was greatest at the start of the season and least at the end of the season, whereas cheese-production potential (yield per 1000 L of milk) followed the opposite pattern. Total-lactation whole-milk powder yield was different among breeds (P<0.0001) at 366, 338 and 312 kg of whole-milk powder for F, FxJ and J cows, respectively. Total-lactation cheese yield was also different among breeds (P<0.0001), and was 371, 375 and 361 kg for F, FxJ and J cows, respectively. The supply curves indicate that milk is best processed into whole or skim milk powder during peak season, and cheese and butter at the end of lactation. However, seasonal production of specific products would limit the use of by-product lactose from cheese manufacture in the production of milk powders, and thus negate the efficiency gains from changes to processing priorities.