›› 2018, Vol. 45 ›› Issue (8): 2147-2156.doi: 10.16431/j.cnki.1671-7236.2018.08.013

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Study on Alkali Storage Effect of Spent Mushroom (Hypsizygus marmoreus) Substrate

XU Jincong, MIAO Jing, HE Xiangbo, HUANG Dingrui, GAN Qianfu, LIANG Xuewu   

  1. College of Animal Science, Fujian Agriclture and Forestry University, Fuzhou 350002, China
  • Received:2018-01-29 Online:2018-08-20 Published:2018-08-15

Abstract:

In order to study the effect of alkali storage on spent mushroom substrate,CaO,Ca (OH)2,CaO+3% urea and Ca(OH)2+3% urea were adopted in the experiment.Each treatment of alkali (CaO/Ca(OH)2) had four levels (3%,4%,5% and 6% additive amount),that was named CO3,CO4,CO5 and CO6;CH3,CH4,CH5 and CH6;COU3,COU4,COU5 and COU6;CHU3,CHU4,CHU5 and CHU6,with 4 replicates per treatment.There were 2 blank groups,one group (CK group) was only spent mushroom substrate,the other one (CKU) was added 3% urea in spent mushroom substrate.Alkaline storage were fermented for 30 d at room temperature.The results showed that compared with the CK group,the content of ADF and free gossypol in CO3,CO4,CO5 and CO6 groups decreased 8.61%,12.69%,13.74%,16.63% and 29.58%,33.92%,39.04%,41.31%;The contents of NDF and ADL in CO5 and CO6 groups were significantly decreased,while the CB2 and RFV were significantly increased (P<0.05).Compared with the CK group,the content of ADF and free gossypol in CH3,CH4,CH5 and CH6 groups were decreased 7.30%,10.90%,13.90%,17.14% and 28.47%,32.69%,40.48%,43.59%,respectively;The contents of NDF and ADL in CH5 and CH6 groups were significant decreased,while the CB2 and RFV were significant increased (P<0.05).Compared with the CKU group,the contents of NDF,ADF and free gossypol in COU3,COU4,COU5 and COU6 groups decreased 6.72%,8.86%, 9.78%,12.10% and 14.63%,16.37%,18.19%,20.21% and 5.49%,14.24%,23.63%,23.66%;RFV increased 18.97%,23.19%,25.86%,30.79%,respectively.Compared with the CKU group,the contents of NDF,ADF,ADL and free gossypol in CHU3,CHU4,CHU5 and CHU6 groups decreased 8.34%,11.87%,14.08%,16.97% and 11.94%,15.19%,18.21%,19.06% and 7.40%,14.93%,19.47%,19.30% and 6.84%,15.60%,22.39%,24.10%,RFV was increased 18.88%,26.20%,34.00%,37.88%, respectively.The effect of CaO and Ca(OH)2 alkali storage was similar.Adding 3% urea alkali to storage much more better than adding CaO or Ca(OH)2,and it could be preserved for a long time.

Key words: spent mushroom substrate; alkali storage; nutritive value; free gossypol

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