共查询到19条相似文献，搜索用时 218 毫秒
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试验旨在研究不同蚯蚓基质发酵前各原料和发酵后基质不同比例的营养价值成分,构建蚯蚓基质营养体系。试验前测定原材料和发酵后配置成基质的风干样品的营养价值成分,设计试验分组:其中,牛粪+蘑菇菌糠质量比为1:0、1:1、1:2、1:3和0:1,牛粪+青贮秸秆C/N为20、25、30、35、40;鸡粪+蘑菇菌糠和鸡粪+秸秆青贮也按上述试验组设置。猪粪+蘑菇菌糠质量比为1:0、1:1、1:2、1:3和1:4,猪粪+青贮秸秆C/N为25、30、35、40、45,每个处理组设置3个重复。根据蚯蚓生长繁殖情况筛选出适宜的基质试验组。试验期60 d。结果表明:牛粪+菌糠质量比1:1、猪粪+菌糠质量比为1:3、鸡粪+菌糠质量比为1:2比较适宜蚯蚓生长,并繁殖较快。牛粪+秸秆C/N比在30~35之间、猪粪+秸秆C/N比为30、鸡粪+秸秆C/N比为25比较适宜蚯蚓生长,并繁殖较快。总体看,粪便与菌糠较粪便与秸秆效果好。 相似文献
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蚯蚓在腐熟猪粪中的生长优于牛粪,而蚯蚓的繁殖,则在牛粪中优于在腐熟猪粪中。将新鲜猪粪和牛粪按比例混合形成混合粪,在最适温湿度和接种密度条件下养殖蚯蚓,可以减少猪粪发酵时间和成本。为改善在这种混合粪中蚯蚓的繁殖生长情况,我们研究了用混合粪养殖蚯蚓的同时添加EM菌的效果。将试验分为4组,EM菌的添加量分别为0%、1%、0.5%、0.25%,每组设置12个重复。结果表明:EM菌添加量为0.5%时,蚯蚓在由新鲜猪粪和新鲜牛粪组成的混合粪中生长繁殖效果较好。但绝大数情况下,未添加EM菌组在日增重倍数和日增殖倍数上都优于其他添加EM菌组,说明用混合粪养殖蚯蚓不需要添加EM菌。 相似文献
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《黑龙江畜牧兽医》2015,(14)
为了研究猪粪养殖蚯蚓的可行性及温度对其生长和繁殖的影响,试验采用花盆室内养殖法进行小规模饲养,观测猪粪养殖的蚯蚓在15,20,28℃条件下的生长、繁殖、取食活动、蚓茧孵化及适应性等生物学特性指标。结果表明:猪粪养殖的蚯蚓生长较快,个体重量较大,蚓茧孵化率为65%~75%;猪粪养殖的蚯蚓的适宜温度为20~28℃,在此温度下蚯蚓逃逸和死亡数量少,活动较为活跃,采食量和排便量大,增重快;随着温度的升高,蚯蚓产茧和生殖环带出现日龄缩短,孵化时间减少,孵化率增高,幼蚓到成蚓周期约为70~80 d。说明温度对猪粪养殖的蚯蚓生长和繁殖有较大影响,利用猪粪养殖蚯蚓具有可行性。 相似文献
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为了探讨不同碳/氮(C/N)值木薯秆饵料对蚯蚓生长繁殖的影响,以木薯秆鹅粪混合料和单一木薯秆作饵料,通过60天的室内培养试验,用平均体重、日均体重增加倍数和日增殖倍数等指标衡量4个处理(C/N20、C/N25、C/N30和C/N43.5)中蚯蚓的生长繁殖状况.结果表明,随着时间的增加,蚯蚓的均重和日增重均降低;在0～45天期间,蚯蚓的日增重随C/N值增加而减小;不同碳氮比之间的日生殖倍数依次是C/N25＞C/N30＞ C/N20＞C/N43.5,C/N25和C/N 30均显著高于C/N20(P＜0.05),并极显著高于处理C/N 43.5(P＜0.01),但C/N 25与C/N 30之间差异不显著(P＞0.05).以鹅粪和木薯秆混合物作为饲料,碳氮比20最有利于蚯蚓的生长,碳氮比25最有利于蚯蚓的繁殖.综合来看,最适宜于蚯蚓生长繁殖的碳氮比是25. 相似文献
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本研究以米糠为碳源,调控消化原料碳氮比(C/N)和接种量以减缓氨氮抑制厌氧消化的作用,为生产中利用蛋鸡粪厌氧消化产沼气提供指导。结果表明:在相同C/N下,40%接种量的总产气量和产甲烷量都显著高于20%的接种量;C/N为11/1,接种量为40%时,厌氧消化产生的累积总产气量和产甲烷量达到最高,分别为8859.67mL和1290.73mL;pH值、挥发性脂肪酸(VFA)等指标研究表明,这主要是由于高C/N导致pH值降低,抑制了甲烷菌的活性,VFA与高氮有机物的分解缓解了氨氮抑制效应。 相似文献
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《当代畜牧》2019,(8)
笔者通过模拟蚯蚓养殖试验,旨在选择不同畜粪(牛粪、猪粪和羊粪)配比基质下饲养蚯蚓的最佳组合。试验共设3种不同原料配比的处理,7 d预饲期,50 d正式试验期,每个处理150条蚯蚓,室温条件下进行养殖试验。通过测定蚯蚓增重、蚯蚓茧数、蚯蚓增加条数和蚯蚓长度指标,来筛选牛粪、猪粪和羊粪混合养殖蚯蚓的最佳优化组合。试验结果表明,从对蚯蚓存活的影响来看,组Ⅰ的蚯蚓死亡数和逃逸数显著低于其他2组(P<0.05),组Ⅲ的蚯蚓死亡数和逃逸数显著高于其他2组(P<0.05)。从对蚯蚓生长性能的影响上来看,在初始体重无显著差异的前提下,组Ⅰ的增重倍数和总长度显著高于其他2组(P<0.05),组Ⅲ的增重倍数和总长度显著低于其他2组(P<0.05)。从对蚯蚓增殖的影响上来看,组Ⅰ的成蚓、幼蚓和蚓茧数均显著高于其他2组(P<0.05),组Ⅲ的成蚓和蚓茧数均显著低于其他2组(P<0.05)。综上所述,处理组Ⅰ(牛粪∶羊粪∶猪粪=80∶10∶10)为最适宜组合。 相似文献
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Histomoniasis (histomonosis, infectious enterohepatitis, or blackhead) is a disease of turkeys on litter or range caused by the protozoan Histomonas meleagridis, a parasite of worms, primarily spread in feces, in Heterakis gallinarum (cecal worm) eggs, or in Eisenia foetida (earthworms). In this trial, Natustat (Alltech, Inc., Nicholasville, KY), a proprietary plant-derived product, was used at 1.925 kg/tonne and compared with nitarsone in male hybrid turkey diets to 42 days of age on histomonad infected litter (day 7) from broiler breeders. Infected nonsupplemented and uninfected nonsupplemented control groups were also included. Natustat and nitarsone significantly improved 28- and 42-day feed conversion ratios and lowered 28- and 35-day cecal and liver lesion scores compared with infected nonsupplemented turkeys. The body weight at 42 days was greater in the Natustat and nitarsone supplemented groups than in the infected nonsupplemented group. 相似文献
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为了探讨用牛粪养殖蚯蚓的适宜发酵程度,测定了赤子爱胜蚓属大平2号在未发酵牛粪(BD0)和发酵10 d牛粪(BD10)、20 d牛粪(BD20)、30 d牛粪(BD30)中的生长性能和繁殖性能。结果表明:BD0和BD30处理蚯蚓的试验末体重、蚓茧产生量和蚓茧孵化率都极显著或显著高于BD10和BD20(P<0.05),而BD0和BD30之间差异不显著(P>0.05),说明未发酵及发酵30 d牛粪比发酵10,20 d牛粪更适宜蚯蚓的生长和繁殖;而用未发酵牛粪养殖蚯蚓在工艺上更简单,成本更低。 相似文献
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影响蚯蚓处理粪污因素的研究进展 《畜牧与饲料科学》2018,39(11):85-89
旨在为研究者深入研究蚯蚓处理粪污技术提供一定参考和借鉴。通过查阅与蚯蚓处理粪污技术相关的文献资料,得出影响蚯蚓处理粪污效果的主要因素有蚯蚓品种选择、环境因素、粪便腐熟程度和粪便组合及辅料成分等。其中,爱胜蚓属的太平2号蚯蚓为国内外专家研究使用最多、实际应用中最广泛的蚯蚓品种;使用蚯蚓处理粪便时,温度保持在15-25℃,pH值应该控制在中性范围内;最适宜蚯蚓生长繁殖的畜禽粪便为牛粪,处理其他动物粪便时加入牛粪形成粪便组合进行处理,牛粪所占比例一定最多。关于湿度和粪便腐熟程度对蚯蚓处理粪便效果的影响、辅料的选择,以及对于除环境因素外的其他3项因素（蚯蚓品种选择、粪便腐熟程度、粪便组合及辅料成分）在不同情况下的选择需要进一步研究。 相似文献
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不同机械干清粪频次对生长猪舍内环境和粪污排放的影响 总被引：4，自引：0，他引：4
《中国畜牧杂志》2019,(8)
本试验以刮板式机械干清粪系统为对象,研究不同清粪频次对生长猪舍内环境和粪污排放的影响。选取216头90日龄、体重39 kg左右的三元杂交生长猪,随机分配在12个猪栏中,根据猪的排泄特征设置2种清粪频次作为试验处理(2次/d、3次/d),试验期间每个处理重复7次。结果表明:与日清粪3次相比,日清粪2次猪呼吸高度处与人呼吸高度处的舍内氨气(NH_3)浓度都有所降低(P>0.05),猪呼吸高度处的舍内CO_2浓度降低8.78%(P<0.01),均能满足猪舍空气质量要求;单位体重粪便收集量提高32.3%(P<0.05),单位体重污水收集量降低3.39%(P>0.05);与日清粪3次相比,日清粪2次污水中各污染物浓度除TN外均有所降低(P>0.05)。结果表明生长猪舍运用机械干清粪系统清粪时采用2次/d的清粪频次可以满足猪舍空气质量要求和污水处理难度。 相似文献
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CASE HISTORY: Two crossbred, castrated male goats, a 5-month-old and an 8-month-old, were observed ingesting Vestia foetida (Solanaceae). Later, the goats were seen standing splay-legged and apparently disoriented. CLINICAL FINDINGS: When examined, both goats were in sternal recumbency and had mydriasis; the younger goat had a diminished menace response. When the goats were made to stand, they were ataxic and had muscle fasciculations of the hindquarters and face. Both had halitosis consistent with the odour of crushed Vestia leaves. The animals were treated with a mixture of vitamins and intravenous diazepam. The older goat recovered but the younger goat died and was necropsied. This animal had severe periacinar necrosis and fatty change in the liver, as well as fatty nephrosis. DIAGNOSIS: Probable Vestia foetida poisoning. CLINICAL RELEVANCE: The introduction of Vestia foetida to New Zealand and the apparent palatability of the plant necessitate that veterinarians and owners be knowledgeable about its potential toxicity. Differential diagnoses for the liver lesions (in New Zealand) would include Cestrum poisoning, acute seneciosis, acute blue-green algal poisoning, and acute and chronic copper poisoning. 相似文献
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以青海省三江源为研究区域,利用2005?2016年间采集的2055个草地野外监测数据校正并构建了适用于该地区的DNDC(denitrification-decomposition,反硝化-分解)模型参数库.通过模拟三江源草地总生物量在两种不同代表性浓度路径(RCPs)气候情景下的时空变化,探究了气候因子对草地总生物量变化的影响,并分析了三江源不同区域草地应对未来气候变化的放牧利用对策.研究结果表明:1)草地总生物量的模拟值与实测值呈显著的线性相关(R2=0.690,RMSE=96.414 g·m?2,P<0.001),模型结果能够较好地解释实测数据.2)两种气候情景对比,RCP 8.5气候情景下温度增幅要高于RCP 4.5的气候情景,而降水量增幅则低于RCP 4.5的气候情景.3)在RCP 4.5和RCP 8.5两种未来气候情景下,研究区草地总生物量均呈显著下降趋势,总生物量模拟值分别下降了16.91％～18.51％和23.82％～26.44％.气候变化是导致草地总生物量变化的主要因素,草地管理应积极应对潜在的气候变化并制定相应对策,保障草地资源的可持续发展. 相似文献
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《African Zoology》2013,48(2):235-244
The abundance of earthworms in the ecological zones in Nigeria has been determined and the possibility of earthworm functions replacing both mechanized land preparation and organic fertilizers discussed. The most abundant earthworms, comprising 62 % of the population, were the advantageous solid-wormcast makers. Mixed Leguminous Wooded Savanna had the highest earthworm density (1.50 million worms/ha), while Wooded Savanna had the lowest (0.23 million worms/ha). Coastal Forest and Mangrove (0.51 t/ha) had the highest earthworm biomass and Afziela Savanna/Semi-Deciduous Forest (0.03 t/ha) had the least. A new soil impact index (SIINDEX) is introduced, which simultaneously incorporates both earthworm biomass and density. The highest SIINDEX was from Mixed Leguminous Wooded Savanna (0.72) and the lowest from Afziella Savanna/Semi-Deciduous Forest (0.11). Forests with SIINDEX less than 0.2 should be regarded as endangered, because their earthworm functions are too low to accomplish significant leaf-litter breakdown and recycling. We suggest that if the illegal annual bush burning is prevented, the soil surface will be naturally mulched, earthworms protected, and by their function in the soil, the need for soil mechanization and fertilization could be replaced by earthworms to produce natural foods. 相似文献