食期 eating stage
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通常是指按食欲大小来划分蚕龄的时期。最初为寡食期 (spare eating stage),其中包括是至竖毛的一龄期和一龄,其以上到蚕皮失去皱褶为止的这一时期。其次是中食期(moderately eating st-age),表现为皮肤紧张且带有光泽,食欲增大,是体长增加的时期。接着是多食期(vosaciouts stsg-e),也称贪食期,此期幼蚕皮肤产生光泽,壮蚕(4—5龄期)则蚕体色发白而肥大,是食欲最旺盛的时期。
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