绿汁发酵液的研究进展

青贮饲料受风吹、日晒、雨淋等气候因素的影响较小,在青贮过程中,可以消灭病虫害和减轻潜在的杂草危害;青贮饲料在扩大饲料来源,缓解青饲、放牧与饲草生长季节的矛盾,提高饲草利用率,均衡青饲料供应,满足反刍动物冬春季营养需要等方面都起着重要的作用。J.M.Calberry等通过以青贮苜蓿替代泌乳奶牛日粮中的苜蓿干草的研究表明,     

蛋氨酸螯合锌对绿头野鸭生产性能的影响

本试验研究蛋氨酸螯合锌对绿头野鸭生长性能及能量和蛋白质代谢的影响,探讨蛋氨酸螯合锌的最佳添加量。试验采用单因子完全随机试验设计,供试绿头野鸭54只,分为3个处理组,每组18只,设3个重复。第Ⅰ组为对照组,添加150 mg/kg硫酸锌;第Ⅱ、Ⅲ组为试验组,分别添加75 mg/kg硫酸锌 150 mg/kg蛋氨酸螯合锌3、00 mg/kg蛋氨酸螯合锌。试验期为8周,采用3层立体笼养,每周进行称重、称料,通过饲养试验、代谢试验,测定绿头野鸭生长率、耗料量及营养物质的代谢率。研究结果表明,各试验组的平均日增重显著高于对照组(P<0.05),分别提高了12.13%、11.96%,以4~7周效果最明显;能量和蛋白质代谢率均显著高于对照组(P<0.05);料肉比显著低于对照组;从试验的总体效果看,添加75 mg/kg硫酸锌 150 mg/kg蛋氨酸螯合锌效果较好。因此,提倡蛋氨酸螯合锌与硫酸锌混合饲喂绿头野鸭效果好,成本低,建议推广使用。     

单独与联合用药驱除羊寄生虫效果的比较

本实验选用绿伊素(长效伊维菌素注射液),丙硫苯咪唑片和盐酸左旋咪唑注射液单独和联合运用,保证了对羊的驱虫效果,对羊无任何副作用,且此类药物为长效驱虫药,只一次用药效果可持续3～6个月,,降低了成本。此法具有省时、省工的优点,可在生产实践中大力推广。     

绿壳蛋鸡与海兰褐壳蛋鸡的养殖经济效益比较试验

一、前言绿壳蛋鸡是一种集天然黑色食品与绿色食品为一体的珍禽极品,其特征为五黑(黑毛、黑皮、黑肉、黑骨、黑内脏)一绿(绿蛋)。绿壳鸡蛋是一种无公害、无污染、健康、安全的天然保健蛋,可以说是21世纪绿色食品中的新秀,它既有营养价值,又有保健价值,故被民间称为"神蛋"。内蒙古额济纳旗达来呼布镇鸡场的绿壳蛋即是经选育的绿壳品     

绿头野鸭肉质随代次变化规律的研究

绿头野鸭肉质随代次变化规律的研究王成新（北京市特禽场）绿头野鸭是家鸭的远祖，驯化后失去了原祖飞行的迁徙生物节律和其它生态习性，其生产性能及血液生理指标随代次变化规律的研究已有报道，伴随着生产性能及血液生理指标的变化，其肉质似也应有规律性变化，但目前尚...     

白花菜平咳喘 绿花菜清热毒

中医认为,花菜性平味甘,可强肾壮骨、健脾养胃,适用于久病虚损、腰膝酸软和脾胃虚弱者。为防止养分丢失,烹饪时间不宜过长,可用热水短时焯过之后加调料食用。     

B9对假俭草抗寒性和绿期的影响

用不同浓度比久(B9)(0、1、3、57、g/L)对盆栽假俭草品系E-126进行喷施处理,研究其对假俭草抗寒性和绿期的影响。结果表明,在低温条件下,B9处理的假俭草与对照相比,可溶性糖、脯胺酸含量升高,电导率降低,喷施低浓度的B9可以提高假俭草叶绿素含量,降低叶绿素分解,从而提高其抗寒性。其中效果最好的处理为喷施1 g/L B9,可延长假俭草绿期4-5 d。     

农民合作社“进”村还有几道坎

今年,山东省一号文件提出,2013年农民合作社要覆盖到每一个行政村,扩大单体规模,提高农户入社率。农民合作社给农村带来怎样的变化?合作社覆盖到村,需要迈哪些坎?2月初,笔者在茌平、莘县等地农村进行了调查。一个合作社带富20个村2月5日凌晨4点,茌平贾寨乡绿冠农民合作社的耿店村交易市场里,20多辆挂有黑、辽、京、津等牌照的货车排     

生物反应器悬浮培养Vero细胞制备水貂犬瘟热活疫苗

为实现利用生物反应器制备规模化、自动化生产水貂犬瘟热Vero活疫苗,在7 L生物反应器中悬浮培养Vero细胞,并考察培养基、细胞初始接种密度、培养方式、病毒感染复数和感染时间等参数对细胞增殖、病毒滴度以及细胞代谢的影响。结果显示,在含有5 g/L微载体的DMEM培养基中接种Vero细胞(30～40 cells/球),设定p H、温度、溶氧值和转速分别为7.2、37℃、50%和55 r/min,培养方式为批次培养(0～48 h)+灌流培养(48～96 h)组合方式,培养Vero细胞3～4 d或细胞密度达到200 cells/球以上时,按照MOI=0.0001～0.001吸附接毒,调低温度(33℃)继续培养100～120 h,即可获得高滴度病毒液(10~(6.5)～10~(7.2)TCID_(50)/0.1 m L),经无菌检验合格后,配制水貂犬瘟热Vero细胞活疫苗(CDV3-CL株,悬浮培养),疫苗符合《中国兽药典》三部(2015版)的规定。试验建立了7 L生物反应器悬浮培养Vero细胞制备水貂犬瘟热活疫苗的新工艺,为进一步规模化生产奠定了基础。     

Effects of Fermented Green Juice and Cellulase on the Fermentation Quality of Rice Straw Silage and Rice Straw with Sugarcane Tip Mixed Silage

Rice straw and sugarcane tip were used as the silage materials in this research,and there were two groups:Rice straw silage and mixed silage of rice straw and sugarcane tip with the mixed ratio 6:4(m/m).Four treatment groups were set up in each silage:Control group (CON) and three treatment groups which added 2 mL/kg fermented green juice (FGJ),3 mL/kg cellulase (CEL) and 2 mL/kg FGJ+3 mL/kg CEL (MIX),and treatment was repeated 3 times. The materials were ensiled at room temperature for 60 days,and the fermentation quality and chemical compositions were tested. The result showed that for the two kinds of raw silage materials,the contents of WSC and CP in rice straw were lower than those in sugarcane tip,while the contents of NDF and ADF in rice straw were higher than those of sugarcane tip.Compared with the CON group,the NDF,ADF,pH and NH₃-N in FGJ group were extremely significantly decreased when rice straw was silaged alone (P<0.01),while WSC was extremely significantly increased (P<0.01),and DMR was increased. The NDF,ADF,pH,GLR and NH₃-N in MIX group were extremely significantly decreased (P<0.01),while lactic acid,WSC and DMR were increased. In CEL group, the ADF was significantly decreased (P<0.05), and other indicators also had improved in different degrees. Compared with rice straw silage,the NDF,HC,pH and NH₃-N of mixed silage were lower,while DMR and WSC were obviously increased. In conclusion,the fermented green juice and it compound with cellulase had the similar effects on improving the fermentation quality,and the effects were both better than that of cellulase. The fermentation quality of rice straw with sugarcane tip mixed silage was better than rice straw silage.