第一百七十一节 猪与牛
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第一百七十一节猪与牛
农庄有二对长白猪和一对东北民猪作为初始种猪。龙腾小说ltxs520.com要扩大猪群，靠自带的外来母本是不够的――太浪费良种公猪宝贵的精液了。一头母猪一年只能产二窝，而一头公猪每年可以给20～30头母猪配种，采用人工授精一年可以给近千头母猪配种。
所以他特意搜集了本地最具有代表性的良种猪临高猪作为母本，用人工授精的方式迅速扩大种群。本地的养猪业还算发达，农户家家户户都养猪，可惜饲养水平太差，按现代畜牧学标准全属于营养不良，杨宝贵勉强买到了十来头还算过得去的母猪来配种。另外又精心挑选饲养了十多头母苗猪准备充作繁殖的母本。
因为熊卜佑一天到晚念叨的要保护纯种临高猪――每次说起临高畜牧站把纯种临高猪给杂交化的时候，熊卜佑总是义愤填膺。杨宝贵特意从农户手里搞来几头架子猪进行育肥养殖，结果发现临高猪不是一种适合现代农业大规模生产的猪种――它的生长期太长了，体重增加之慢闻所未闻。他问了当地人才知道育肥一头200斤左右的生猪得24个月才能出栏。对比现代猪存栏不过一年来说实在不经济。
“临高畜牧局当年把临高猪都闹成杂交品种了也是情有可原，不然怎么满足的了这么大数量的出口？”
“你现在也在把临高猪搞成杂交品种嘛。”
“我可是还保存着几头纯种的――每个品种我都要保留几头种畜的。保持原种很重要。”
养猪场新建成的成排的猪圈里大部分还空荡荡的。临高冬季不甚寒冷，但是夏季比较湿热，雨水多，还有台风的问题，所以杨宝贵在主持养殖场修建的时候选择了单坡敞开式的猪圈，利于通风散热。而且猪圈的用材是相当考究的，地面全部用水泥抹平。整个猪圈力求坚固，能抵御大风，防雨性能好，。
“夏季台风不是闹着玩的，”杨宝贵说，“现在贪便造得廉价，猪圈一塌了压死了猪就损失了。”
吴南海注意到猪圈附近留着一大片的用坚固的竹篱笆围起来的土地，土壤被翻得凌乱不堪，还有几个乌黑的烂泥塘。
“这是猪的体育场，”杨宝贵说，“虽然不养跑步猪，但是猪适量运动运动有益增加食欲，烂泥塘也是它们爱玩的项目――还能防病。”
猪舍和运动场的四周，已经种植了许多的植物，包括防风林树苗，猪舍的墙根种着南瓜，猪舍露天栏的上方搭着架子，种上了西葫芦。不但可以给猪圈遮阳降温，还能用来补充饲料。
“这猪的日子还真是逍遥。周边的环境卫生也不错。”
“当然，动物也有心理压力的，你别以为猪喜欢又脏又臭的环境。它们过得愉快，才能少生病，长得快，肉质好。种猪才能春情勃发。”
“你看，这就是纯种的临高猪。”杨宝贵指着十来头在猪圈里睡觉的断奶小猪，“临高猪的味道的确不错，特别是烤乳猪，”杨宝贵咂巴着嘴，“所以单独养一些，让熊卜佑给你做烤乳猪吃。”
这里实行严格的分圈饲养。杨宝贵告诉吴南海，这里光适应不同状态、月龄的猪舍就有9种之多。每种猪圈因为饲养的头数不同面积大小各不相同，设备结构也略有不同。除此之外，还有专门用来配种的配种室和母猪的分娩舍。
“所谓科学养猪，并非一定得有全价饲料、抗生素、消毒剂和疫苗才行――这是现代商品化大生产下的无奈之举。象我们这样条件有限的，也有很多简单有效的技术可以运用，一样可以取得好的效果――就是在养殖规模和效率上要差一些了。不过绝对环保。”
“就说这个苗猪舍好了。”杨宝贵让他看猪舍的地面，是用石墩架架空一米高的铁格网栅地板。
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