苜蓿、白三叶对黄粉虫生长性能及体成分的影响

选用5~6龄黄粉虫(Tenebrio molitor)幼虫,采用单因素随机设计,2个试验组白三叶(Trifolium repens)组,饲喂白三叶干草;苜蓿(Medicago sativa)组,饲喂苜蓿干草],1个对照组小麦(Triticum aestivum)麸组,饲喂小麦麸],研究白三叶干草、苜蓿干草饲粮对黄粉虫幼虫生长性能及体成分的影响。结果表明,白三叶组采食量正常,苜蓿组采食量极低,约为小麦麸组的1/4;3个参试组间虫体增质量、氮沉积量、脂肪沉积量差异均达显著水平(P0.01),顺序为苜蓿组白三叶组对照组;试验结束时3个参试组间虫体粗蛋白含量、粗脂肪含量差异均达显著水平,分别表现为苜蓿组白三叶组对照组、苜蓿组白三叶组对照组,总能值差异不显著(P0.05);2个试验组间死亡率及化蛹率无显著差异,均显著低于对照组(P0.01)。

Effects of alfalfa and white clover diet on growth performance and compositions of Tenebrio molitor

5-6th instar mealworm (Tenebrio molitor) larvae and a single factor randomized design were used to study the effects of alfalfa (Medicago sativa) and white clover (Trifolium repens) diet on growth performance and body compositions of Tenebrio molitor with two treatment groups (clover group fed with white clover hay and alfalfa group fed with alfalfa hay) and one control group (wheat bran group fed with wheat bran). The results showed that the dry matter intake of clover group was at the normal level, but that of alfalfa group was far lower than that of control group (about 1/4 of the control). The weight gains, nitrogen depositions, ether extract depositions of mealworm larvae among three groups were significantly different (P<0.01) and the order was alfalfa group < clover group < control group. At the end of experiment, the differences of crude protein contents and ether extract contents of mealworm among three groups were significant (P<0.01); the orders were alfalfa group > clover group > control group, alfalfa group < clover group < control group respectively; the energy value of mealworm among three groups were similar. As for mortalities and pupation rates, there was no significant difference between two treatment groups, but significantly lower (P<0.01) than control group.