The feral pigs are a mixed population of domestic swine and wild boar, which were introduced to Canada in the late 1980s for meat and recreational shooting. Keepers released the boars and some pigs when the market for boar meat plunged in the early 2000s, thinking that the animals wouldn't survive the harsh Canadian prairie winter and deep snow. But instead the pigs thrived. "These pigs have high reproductive rates, are very mobile and have a high capacity to spread," said Ryan Brook, a professor of animal and poultry science at the University of Saskatchewan in Canada. As it turns out, the pigs are also resistant to the cold, so Brook and his colleagues dubbed them 'super pigs'.
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この記事は How It Works UK の Issue 192 版に掲載されています。
7 日間の Magzter GOLD 無料トライアルを開始して、何千もの厳選されたプレミアム ストーリー、9,000 以上の雑誌や新聞にアクセスしてください。
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