绵羊粪中排出的牧草种子及其发芽研究

Study on Herbage Seeds and Their Gremination in Sheep Feces.

将牧草种子定量混合在饲草中饲喂绵羊，然后按不同时间采集羊粪，计算含种子的粪粒数和种子回收率，最后用含种子的粪粒进行发芽试验。结果表明，含种子的粪粒数猫尾草（Ｔｉｍ）为最多，占总粪粒数的４０％；其次是紫花苜蓿（Ａｌｆ），占１１％。其他三种牧草均在５％以下。猫尾草的种子回收率最高，占饲喂种子总量的４５．７％；其次是紫花苜蓿，占１５．５％。其它三种牧草的种子回收率也都在５％以下。饲喂猫尾草后２４～４８小时内的粪粒出苗率最高，占总粪粒数的８７％；１２～２４小时的为７１％，４８～７２小时的为１９％，紫花苜蓿供给后１２～２４小时内的出苗率最高，占６８％；２４～４８小时内的为２９％。

Sheep were fed by forage mixed quantatively with herbage seeds.Sheep feces were col-lected vegularly and the fece ball mumber with seeds and the seed collecting ratio were calculated.The results of seed germination experiment with sheep feces show that fece balls containing. Timothy seeds get the largest proportion in total sheep feces(40%),fellowed by balls containing'alfalfa seeds(11%).Timothy seeds showed the highest re-covery rate(45%of the feeding seeds).The next is alfalfa seeds(15%)and the other three species hare rery low recovery rate(under5%).In terms of germination rate of fece balls,Timothy gets 71%on 12-24 hrs after feeding 87%on 24-48 hrs and 19%on 48-72 hrs;Alfalfa gets 68%on 12-24 hrs and 29%on 24-48hrs.