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通过分析目前国内主要的乳猪料生产工艺,确定了原料粉碎粒度、喂料速度、调质温度、制粒机电流、冷却机电流等指标为试验影响因素,进而研究这些关键工艺参数的控制对产品品质的影响。试验研究以天津彩虹饲料有限公司为实验数据来源,A、B、C、D是该企业按4种不同的配方生产的乳猪料产品,其中高档产品A的膨化玉米添加比例为40%,普通产品B、C、D的膨化玉米添加比例为0。试验结果表明,对于产品A最佳的工艺参数是原料的粉碎粒度为300~550μm(占92%),喂料速度为255kg/h,调质温度为64℃,制粒机电流为175A,冷却风机电流为31A;对于产品B、C、D的最佳的工艺参数:料的粉碎粒度为300~550μm(占57%),喂料速度为230kg/h,调质温度为68℃,制粒机电流为185A,冷却风机电流为33A。 相似文献
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牧草、玉米青贮和作物秸秆营养价值的洗涤剂法评定 总被引：19，自引：5，他引：14
以豆科牧草苜蓿、毛苕子,禾本科牧草草芦、多花黑麦草,玉米青贮及小麦秸、玉米秸为试验材料,用Van-Soest洗涤剂法对中性洗涤溶解物(NDS)、半纤维素(HF)、纤维素(F)、酸性洗涤木质素(ADL)及酸不溶灰分(AIA)等成份进行测试,结果表明:豆科牧草的NDS平均含量为73%,F与HF含量之和平均为23%,而ADL平均含量为0.2%;其次为禾本科牧草,其NDS平均为38%,HF与F含量之和平均为59%,ADL平均含量为0.5%;玉米青贮的NDS含量为42%,F与HF含量之和为41%,而ADL含量为3%;秸秆类饲料的NDS平均含量为28%,F与HF含量之和平均为62%,而ADL平均含量为6%,其中小麦秸NDS含量仅为23%,尽管其F与HF含量为65%,但ADL含量高达9%。 相似文献
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为加快畜牧业的发展,宜宾市翠屏区按照＂以市场为导向、科技为依托、发展为主题、结构调整为主线、农民增收为核心＂的指导思想,坚持推进标准化生产,转变传统养殖方式;努力推进畜牧业产业结构调整和畜牧业产业化进程。 相似文献
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《江西畜牧兽医杂志》2012,(6):59
<正>目前形成了国内五大类鸡蛋消费市场:第一类市场为天津市、北京市、辽宁省和上海市,年人均消费量为11～16千克。第二类市场为山东省、黑龙江省、江苏省、安徽省和河北省,年人均消费量为7～1l千克。第三类市场为吉林省、山西省、福建省、广东省、浙江省、河南省、重庆市,年人均消费量为5～7千克。第四类市场为湖北省、内蒙古、陕西省、四川省、江西省、青海省、宁夏自治区、新疆自治区、湖南省、云南省、广西自治区 相似文献
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南疆地区小花棘豆的营养成分分析 总被引：9，自引：3，他引：6
对新疆南疆地区小花棘豆Oxytropis glabra风干样的常规营养成分、主要矿物质元素及氨基酸含量进行测定,结果表明:小花棘豆干物质含量为94.49%、粗蛋白含量为14.97%、粗脂肪含量为3.11%、总能值为14 234 J/g、粗灰分含量为9.32%、中性洗涤纤维为36.70%、酸性洗涤纤维为28.06%、木质素为3.98%、纤维素为24.06%、钙0.98%、磷0.15%。小花棘豆中含有常见的17种氨基酸,其中包括9种必需氨基酸,氨基酸总量(占干质量)为13.42%,必需氨基酸总量为12.68%;微量元素含量与紫花苜蓿Medicago sativa的含量接近,是潜在的牧草资源。 相似文献
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从妊娠 35～ 50天的北极狐流产胎儿脏器中分离到一种革兰氏阴性杆菌 ,经培养特征、形态、生理生化、致病力测定 ,证实为鸡伤寒沙门氏菌 ,确定该菌为引起狐流产的病原菌 相似文献
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Ten bacterial species were isolated from areas on the skin of Merino sheep affected by a chronic scaly condition leading to retarded wool growth. The growth requirements of the bacteria were studied and it was shown that they could multiply under the conditions prevailing on the skin if moisture was provided. All the bacteria isolated have the ability to stimulate the infiltration of round cells into the dermis, which is the essential feature of the pathological changes in the naturally affected skin. It was concluded that the bacteria have a decided aetiological role. 相似文献
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G. J. Sawyer 《Australian veterinary journal》1977,53(11):542-544
Bacterial samples were isolated from the os cervix of mature Merino ewes during a normal oestrous cycle and after colchicine treatment which killed the 25-day old embryos. The population of bacteria was small during the oestrous cycle and consisted of Achromobacter spp. Alcaligenes spp, Corynebacterium spp, Bacillus spp and Escherichia coli. There was a significant increase in the numbers of bacteria isolated and a change in the proportions of the bacteria isolated from ewes after embryo death. Much greater numbers of potentially pathogenic organisms, including Pasteurella multocida, Corynebacterium pyogenes, Staphylococcus spp and Streptococcus spp were isolated after embryos were killed. It is suggested that persistence of potential pathogens in the vagina may impair fertility in ewes at the first oestrus after embryo death. 相似文献
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本文旨在研究奶牛产后子宫内优势菌群随时间的动态变化及细菌种类与子宫黏液性状之间的关系,以便于临床的快速诊断及治疗。选取分娩日期临近、产后子宫黏液性状不同的荷斯坦奶牛42头,于分娩后10、20、30和40d采集子宫黏液,体外培养法进行细菌分离、鉴定。结果显示,产后奶牛子宫内分离率最高的细菌分别为大肠杆菌(85.7%)、变形杆菌(64.3%)和葡萄球菌(61.9%);除大肠杆菌在整个试验期分离率均较高外,产后10、20、30和40d优势细菌分别为葡萄球菌、产气荚膜梭菌、沙门氏菌和葡萄球菌。白色或灰白色脓性黏液,黄色或土黄色黏液中细菌平均分离株数(5.6±0.4,5.5±1.4)高于清亮透明黏液(3.5±1.6),其中沙门氏菌、变形杆菌、链球菌和化脓隐秘杆菌产后30和40d的分离株数高于清亮黏液,说明其可能与白色或黄色脓性黏液的出现相关;产后40d黄色或土黄色化脓性黏液可能与产气荚膜梭菌的出现相关;而粪肠球菌和嗜酸乳杆菌产后20、30、40d在脓性黏液中分离数高于清亮黏液,说明其作为有益菌可能在分泌不正常黏液的子宫内具有抵抗病原菌的作用。结果表明,产后奶牛子宫内优势菌群呈动态变化,子宫黏液性状与特异病原菌的出现有关。 相似文献
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几种禾本科牧草内生细菌的分布特性 总被引：1，自引：0，他引：1
不同禾本科牧草植株内生细菌含量差异显著,杂交狼尾草闽牧六号内生细菌含量最高,达26.800×104CFU/g。具体到各个部位,禾本科牧草不同部位内生细菌含量差异也显著。通过微生物鉴定系统对内生菌进行鉴定的结果表明,64株内生细菌中与MIDI数据库比较相似性指数大于0.500,可确定其菌种名称的有50株,属于19个种,隶属于12个属。以分离到的19种内生菌为样本,以各菌株在各部位出现与否为指标,用类平均法对数据进行系统聚类分析,当λ=8.35时,可将19种内生细菌分为4个大类群。从聚类结果显示,内生菌与宿主植株和不同分离部位都存在相关性,与宿主植株的关系更密切。 相似文献
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WU Xuan YUAN Hai-wen XIE Xiao-dong LI Zhu-xuan GOU Chang-yong LUO Wei CHENG Zhen-tao LI Pan 《中国畜牧兽医》2017,44(10):3057-3062
To ensure the cause of suspected bacteria disease for channel catfish, the bacteria from clinical cases were isolated and cultured, then the biochemical and molecular biology assay, and animal regression test were used to identify the species of the isolated bacteria, bacteria medicine sensitive test was used to detect the bacterial drug resistance. The results showed that the bacteria were gram negative bacilli. The colony morphology and biochemical characteristics of the isolated bacteria were same as Aeromonas hydrophila. The sequencing test of the 16S rDNA also confirmed the isolated bacteria were Aeromonas hydrophila. The isolated bacteria could infect the healthy channel catfish and cause the same symptoms as the clinical case. The isolated bacteria were sensitive to floroquinolones and resistant to penicillin and cephalosporin drugs. The results showed that the pathogen of case catfish bowel disease was Aeromonas hydrophila, and the floroquinolones could use to prevent and treat the disease. 相似文献
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TANG Sha YUAN Hai-wen YANG Yuan ZHANG Yun-dan WANG Jun CHENG Zhen-tao TANG Ying-xiu CHEN Bo 《中国畜牧兽医》2017,44(9):2724-2730
In order to determine the suspected avian cholera pathogen and geneotypes, bacteria isolation technology was used to isolate and culture pathogenic bacteria, the isolated bacteria were identified by traditional methods and molecular biological methods. Geneotyping of the isolated bacteria were determined using PCR technology and gene sequence analysis. The results demonstrated that the isolated bacteria had typical culture characteristics of Pasteurella multocida (Pm),and the morphology of the colony, the characteristics of cell staining, the physiological and biochemical characteristics were consist with Pm; 457 bp fragment was amplified by PCR. Geneotyping results showed that only A primer amplified the target gene fragment of 1 050 bp, sequence analysis also showed that the isolated bacteria shared 97.6% to 100.0% sequence homology with reference strains, and phylogenetic tree analysis showed that the isolated bacteria and A type Pm were in a branch.The experimental results indicated that the isolated bacteria was identified as capsular serotype A of Pm, the results provided reference for the prevention and control of fowl cholera. 相似文献
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斑点叉尾鮰套肠病病原嗜水气单胞菌的分离与鉴定 总被引：1，自引：0，他引：1
为确定疑似细菌感染的斑点叉尾鮰病原,本试验对临床病例进行细菌分离培养、生物化学鉴定和分子生物学鉴定、动物回归试验和病原菌药敏试验。结果显示,分离菌为革兰氏阴性杆菌,菌落形态和生化特性与嗜水气单胞菌相符;16S rDNA检测与测序分析结果进一步证实分离菌确为嗜水气单胞菌;动物回归试验显示,分离菌能引起与临床自然病例相似的症状;药敏试验显示,分离菌对喹诺酮类药物敏感,对青霉素类、头孢类药物产生耐药性。结果表明,疑似细菌感染斑点叉尾鮰病例为嗜水气单胞菌感染,可选择喹诺酮类药物进行病例的预防治疗。 相似文献
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鸡传染性眼炎致病性奇异变形杆菌的分离与鉴定 总被引：2，自引：0，他引：2
从江苏、安徽、山东等地６７例患鸡传染性眼炎病例中分离到１３株细菌分离物。经培养特性，形态学观察，生化试验鉴定，１３株细菌分离物均属于奇异变形杆菌，该细菌在浸润的营养琼脂表面呈迁徒生长，在鲜血琼脂上不溶血，在麦康凯琼脂生长良好，形成单个菌落，人工感染ＳＰＦ雏鸡可导致发病死亡，并且能从肝脏和上呼吸道到相应的细菌，表明分离的奇异变形杆菌具有一定的致病力，它在鸡传染性眼炎中是不可忽视的病原菌之一。 相似文献