Ian Smith has been Patrick Dean's unitmanager at The Old Rocket Site for 18 years.He has seen many changes in that time, and has been instrumental in lots of them.Over the years, the herd has grown to 580 JSR 90 sows, with a replacement rate of 55%. This has seen new buildings erected and, as the herd outgrew them, they have been replaced with more up-to-date ideas.
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机译：伊恩·史密斯（Ian Smith）担任老火箭队（The Old Rocket Site）的帕特里克·迪恩（Patrick Dean）的单位经理已有18年了，他在那段时期里看到了许多变化，并且在许多变化中发挥了作用。多年来，牛群发展到580头JSR 90母猪，更换率达55％。这见证了新建筑物的建立，并且随着牧群的增长，它们被更多最新的想法所取代。
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