This legislation also overlooks another significant consequence: the New Zealand dairy herd has effectively ceased expanding. Now dairy herds reproduce for lactation purposes, and the proposed ban will see their resulting progeny becoming essentially worthless, adding to our livestock in New Zealand. The opportunity costs of these 150,000 bobby calves means that New Zealand could forgo $200 million to $300 million in direct economic benefits from the live export industry. Labour may think this income is just for farmers, but that's incorrect; it's for all of New Zealand. Let me use the example of David Lindsay, a sixth-generation Southland farmer in my electorate who wrote to the Primary Production Committee last year. David and his father had been supplying export cattle to several export companies for many years. David and his father are also predominantly dairy farmers. They milk their cows 365 days a year. To do this, they run a split calving system. This means calves are born in spring and summer, 65 percent of their herd is calved in spring, and they autumn calve 15 percent of their herd. The remainder of their herd, 20 percent, is made up by non-pregnant calves that they purchase from other farmers in the autumn. Now these empty, non-pregnant, cows are replacement stock. Like most New Zealand dairy farmers, David's farm does not require calves to be reared to maintain their herd, therefore the export market provides an important outlet for the calves they don't need.