In order to solve the problems like rotten bed caused by accumulated wa-ter in the beddings of the deep-litter system, the ＂heat pulse method＂ was deter-mined as the moisture control method for beddings through test...In order to solve the problems like rotten bed caused by accumulated wa-ter in the beddings of the deep-litter system, the ＂heat pulse method＂ was deter-mined as the moisture control method for beddings through tests, and a set of e-quipment was designed for the moisture control of deep-litter beddings. With STC89C52 micro-control er as the center, WL433A wireless communication module as means of data transmission, VB.NET for PC development, Access as back-ground database, the system realized the real-time col ection, wireless transmission, automatic storage and remote real-time monitoring of the internal information of the deep-litter beddings, which provided the facility basis for the research on the mois-ture control of deep-litter beddings, and to a certain extent, promoted the develop-ment of the facilities and equipment for livestock breeding.展开更多
[Objective] The study was conducted to optimize the operation parameters of water control equipment for deep-litter beddings. [Method] A four-factor three-level orthogonal design was adopted to optimize experimental t...[Objective] The study was conducted to optimize the operation parameters of water control equipment for deep-litter beddings. [Method] A four-factor three-level orthogonal design was adopted to optimize experimental temperature, stopping time of aeration, aeration time and aeration rate by 9 groups of experiments, so as to improve the water removal efficiency of adopted mixed and reduce operation energy consumption. [Result] The average water contents in the mixed bedding under 3 temperatures decreased by 4.58% ±2.91%, 13.17% ±3.77% and 10.8% ±7.72%, respectively; the highest water removal efficiency could be achieved under an experimental temperature at 45 ℃, stopping time of aeration of 15 min, aeration time of 7 min, and an aeration rate at 4 m^3/min, which formed the optimal factor combination mode of the operation parameter of the water control equipment; the effects of various experimental factors on water content in the bedding were in order of aeration ratetemperatureaeration timestopping time of aeration; and the effects of various experimental factors on water removal efficiency in the bedding were in order of temperatureaeration rateaeration timestopping time of aeration. [Conclusion] After the optimization of operation parameters of the water control equipment for the deep-litter bedding, water removal efficiency of the mixed bedding could be improved, and the operation energy consumption of the equipment could be reduced.展开更多
The selection and compatibility of the microbial strains and bedding materials in a deep-litter system is the primary issues for this ecological breeding technology. In this paper, we analyzed and summarized the categ...The selection and compatibility of the microbial strains and bedding materials in a deep-litter system is the primary issues for this ecological breeding technology. In this paper, we analyzed and summarized the categories of microbial strains and bedding materials suitable for a deep-litter system, the fermentation properties of different microbes, the parameter requirements of bedding materials, and the fermentation process led by functional microbial flora in a deep-litter system, with the objective to provide theoretical bases and practical guidance for the promotion of deep-litter breeding method nationwide.展开更多
[Objective] The aim was to study the effects of compound microbial inoculants on fermentation bed.[Method] With fermentation simulated in lab,analysis was conducted on changes of temperature,pH,nitrate nitrogen,ammoni...[Objective] The aim was to study the effects of compound microbial inoculants on fermentation bed.[Method] With fermentation simulated in lab,analysis was conducted on changes of temperature,pH,nitrate nitrogen,ammonium nitrogen,urease activity and protease activity in fermentation by microorganism and natural fermentation respectively,to explore effects of compound microbial inoculants on fermentation bed of swine.[Result] Compared with control group,the added microbial inoculants in test group promoted temperature rising during fermentation and prolonged lasting period of high temperature,for example,high temperature at 60 ℃ maintained 10 d in the test.Furthermore,the inoculants reduced pH of packaging material environment,for example,pH finally was 7.05,lower than that of control group.Microbial inoculants accelerated transformation of ammonium nitrogen into nitrate nitrogen and reduced nitrogen loss.In addition,activities of urease and protease enhanced in packaging materials and excrements degraded rapidly.[Conclusion] The research provides technical references for strain development,selection and evaluation of fermentation bed of swine.展开更多
基金Supported by the Fund for Independent Innovation of Agricultural Sciences in Jiangsu Province(CX(13)3073)~~
文摘In order to solve the problems like rotten bed caused by accumulated wa-ter in the beddings of the deep-litter system, the ＂heat pulse method＂ was deter-mined as the moisture control method for beddings through tests, and a set of e-quipment was designed for the moisture control of deep-litter beddings. With STC89C52 micro-control er as the center, WL433A wireless communication module as means of data transmission, VB.NET for PC development, Access as back-ground database, the system realized the real-time col ection, wireless transmission, automatic storage and remote real-time monitoring of the internal information of the deep-litter beddings, which provided the facility basis for the research on the mois-ture control of deep-litter beddings, and to a certain extent, promoted the develop-ment of the facilities and equipment for livestock breeding.
基金Supported by the Fund for Independent Innovation of Agricultural Sciences in Jiangsu Province(CX(13)3073)Jiangsu Science and Technology Support Program(BE2014-342-1)~~
文摘[Objective] The study was conducted to optimize the operation parameters of water control equipment for deep-litter beddings. [Method] A four-factor three-level orthogonal design was adopted to optimize experimental temperature, stopping time of aeration, aeration time and aeration rate by 9 groups of experiments, so as to improve the water removal efficiency of adopted mixed and reduce operation energy consumption. [Result] The average water contents in the mixed bedding under 3 temperatures decreased by 4.58% ±2.91%, 13.17% ±3.77% and 10.8% ±7.72%, respectively; the highest water removal efficiency could be achieved under an experimental temperature at 45 ℃, stopping time of aeration of 15 min, aeration time of 7 min, and an aeration rate at 4 m^3/min, which formed the optimal factor combination mode of the operation parameter of the water control equipment; the effects of various experimental factors on water content in the bedding were in order of aeration ratetemperatureaeration timestopping time of aeration; and the effects of various experimental factors on water removal efficiency in the bedding were in order of temperatureaeration rateaeration timestopping time of aeration. [Conclusion] After the optimization of operation parameters of the water control equipment for the deep-litter bedding, water removal efficiency of the mixed bedding could be improved, and the operation energy consumption of the equipment could be reduced.
基金Supported by the Special Fund for the Independent Innovation of Agricultural Sciences and Technology in Jiangsu Province[cx(12)1001-04]~~
文摘The selection and compatibility of the microbial strains and bedding materials in a deep-litter system is the primary issues for this ecological breeding technology. In this paper, we analyzed and summarized the categories of microbial strains and bedding materials suitable for a deep-litter system, the fermentation properties of different microbes, the parameter requirements of bedding materials, and the fermentation process led by functional microbial flora in a deep-litter system, with the objective to provide theoretical bases and practical guidance for the promotion of deep-litter breeding method nationwide.
基金Supported by Construction of Innovative Enterprises of Changsha Science and Technology Program(K1112050)~~
文摘[Objective] The aim was to study the effects of compound microbial inoculants on fermentation bed.[Method] With fermentation simulated in lab,analysis was conducted on changes of temperature,pH,nitrate nitrogen,ammonium nitrogen,urease activity and protease activity in fermentation by microorganism and natural fermentation respectively,to explore effects of compound microbial inoculants on fermentation bed of swine.[Result] Compared with control group,the added microbial inoculants in test group promoted temperature rising during fermentation and prolonged lasting period of high temperature,for example,high temperature at 60 ℃ maintained 10 d in the test.Furthermore,the inoculants reduced pH of packaging material environment,for example,pH finally was 7.05,lower than that of control group.Microbial inoculants accelerated transformation of ammonium nitrogen into nitrate nitrogen and reduced nitrogen loss.In addition,activities of urease and protease enhanced in packaging materials and excrements degraded rapidly.[Conclusion] The research provides technical references for strain development,selection and evaluation of fermentation bed of swine.
