| In this study,Protaetia brevitarsis Lewis was raised indoors and outdoors in the appropriate season with the fermented cattle manure as the feeding substrate,to explore the feasibility and potential of large-scale breeding of P.brevitarsis Lewis in xinjiang.The transformation capacity and growth of P.brevitarsis Lewis larvae on fermented cattle manure were compared between indoor and outdoor larvae in pond and pot culture modes.The effects of microbial inoculants,the amount of straw added,and the way of maintaining water in the pile on the preparation of P.brevitarsis Lewis feeding substrate from aerobic compost of cattle manure were studied.In order to provide scientific basis for P.brevitarsis Lewis artificial breeding and transformation of livestock manure in xinjiang.The main results were as follows:1.Outdoor conditions are more conducive to the emergence of P.brevitarsis Lewis.P.brevitarsis Lewis emerged adults after 26 days of pupation,4 days earlier than indoor condition and outdoor sheds condition.On the 30th day after the pupation,the emergence peak period will be entered,which lasts for 13 days and the emergence rate reaches 83%.The male-female ratio of the total number of adult emergence was close to 1:1,and the females emerged about 1 to 3 days earlier than the males.With 50 pairs of adult worms as breeding units,there was not much difference between the indoor and outdoor spawning of adults.The indoor single female spawn 109.80 grains and the outdoor 105.94 grains.P.brevitarsis Lewis will enter the peak of spawning 30-35 days after emergence,and spawning duration up to 60 days.2.There is not much difference between indoor and outdoor in the transformation of cattle manure by P.brevitarsis Lewis larval and growth of P.brevitarsis Lewis larvae in flat pond mode.P.brevitarsis Lewis larval can grow from mid-second instar to mature larvae in about 35 days,weighing about 2 g,and at a density of 2000/m2,P.brevitarsis Lewis larvae can eat 41.74 kg of fermented cattle manure during this period,producing dung-sand 36.38 kg and larvae 0.88 kg.At room temperature of 25?,the larvae of P.brevitarsis Lewis will pupate 45 days after entering the mature larva stage,and during this period can normally take fermented cattle manure.In the three-dimensional pot culture mode,indoor conditions are more conducive to the growth of P.brevitarsis Lewis and the transformation of cattle manure.P.brevitarsiS Lewis can grow to mature larvae from the second instar in 40 days.At a density of 100 larvae per pot in a room,one pot of P.brevitarsis Lewis larvae can consume 5.9 kg of fermented cattle manure for 60 days,producing dung-sand 5.19 kg,and larvae 0.09 kg.3.The addition of decomposing agent and certain wheat straws could promote aerobic fermentation.It could reach initial maturity 5-10 days earlier than the control,and complete maturation 10 days earlier.How did the content of straw affect the speed of preparation of the feed for P.brevitarsis Lewis is related to the type of decomposing agent.Each decomposing agent has its own optimal straw mix ratio.One of the most effective products selected in this experiment was RW,which could achieve the best feeding effect on the 5th day of Cattle manure composting,15 days earlier than the control.In a week,the food intake of 10 P.brevitasrsis Lewis reached 64.72 g,producing 59.4 g of dung-sand and a growth of 1.32 g.The preparation of P.brevitarsis Lewis feeding substrate by aerobic heap rotting cattle manure does not require any water retention measures.Protaretia brevitarsis Lewis can be scaled breeding and efficient conversion of cattle farm waste,both outdoors in Xinjiang in suitable seasons and indoors in suitable temperature and light conditions. |
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