‘桂热杧82号’花期短截花枝试验     

陈千付  韦淑丹  钟勇  黄杰  王烨熔  黄慧俐  杨谨瑛  蒋强  曹元鑫 《中国热带农业》2021,(2):61-64,48

为延迟‘桂热杧82号’采收期,提高杧果种植效益,对‘桂热杧82号’在不同花期进行短截花枝处理试验。结果表明,在原生花序初花期、盛花期短截花枝并配套相应的栽培技术,‘桂热杧82号’均易抽出再生花序,再生花序盛花期较对照分别推迟约30~35d、40~50d,采收期较对照分别推迟约30d、40d,且产量较对照显著增加,分别是对照的1.63倍、2.25倍;有胚果数量较对照明显增多,分别是对照的1.39倍、2.25倍;采收期果实品质与对照无明显差异。原生花序初花期、盛花期短截花枝是推迟‘桂热杧82号’上市的有效措施。  相似文献   

基于PCA的新疆生产建设兵团城镇化评价指标体系的构建     

郭丽峰  张吉林  陈小丽 《安徽农业科学》2016,(28)

结合新疆生产建设兵团城镇化建设自身特点,将生态环境指标和社会稳定指标作为重要的考核因素,形成一种全方位的城镇化综合评价因子。以《新疆生产建设兵团统计年鉴2014》中兵团14个师的数据为例,运用PCA方法,将影响评价兵团城镇化发展水平的20个主要因子,分为社会发展、经济建设、基础建设、社会稳定和生态环境5个方面,构建了兵团城镇化发展的新型评价指标体系。  相似文献   

Transoesophageal ultrasound and computer tomographic assessment of the equine cricoarytenoid dorsalis muscle: Relationship between muscle geometry and exercising laryngeal function          下载免费PDF全文

J. J. Rawlinson  N. G. Ducharme  L. Bookbinder  M. Thompson  J. Cheetham 《Equine veterinary journal》2017,49(3):395-400

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60Co-γ射线辐射处理陆地棉后代性状变异分析     

邵琳  陈勋基  王浩  危晓薇  李建平  黄全生 《新疆农业科学》2010,47(12):2350

[目的]研究不同诱变剂量对棉花遗传变异的影响.[方法]利用100～300Gy的60Co-γ射线对5个陆地棉材料干种子进行辐射处理,对其M3、M4农艺经济性状的遗传变异进行分析.[结果]5个品种(系)在200Gy诱变剂量达到半致死剂量,200～300Gy是陆地棉理想的诱变剂量.M4群体的单铃重、单株铃数、株高和果枝数平均变异系数均超过10;以上,250Gy剂量诱变的辐射诱变后代M4群体表型性状变异系数存在明显差异.[结论]200～300Gy辐射剂量对不同棉花品种的诱变效果存在差异,揭示了辐射创造丰富的遗传变异.  相似文献   

Invasive Teat Surgery in Dairy Cattle: II - Long-term Follow-up and complications          下载免费PDF全文

Arighi M  Ducharme NG  Horney FD  Livesey MA  Hurtig MH 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(12):763-767

A prospective study was performed on 52 teats that were operated upon at the Ontario Veterinary College over a three year period for various problems. Long-term postsurgical follow-ups were obtained to assess milking ability. Sixty-three percent of all the cows that had surgery were classified by the Canadian Holstein Association as "good" or better. The implantation of a prosthesis was required in 32 teats and was found to be associated with: a higher prevalence of chronic mastitis, a lower long-term milking success rate, and an increased prevalence of abnormal milking times. Of the five types of teat lesions encountered, Type I (<30% of teat cistern involved) and Type V (lacerations, webbed teats, fistulae) had the best short and long-term prognosis for lactation. Overall, 60% of the operated teats were milking one month after surgery, and 41% at the end of the lactation.  相似文献   

Invasive teat surgery in dairy cattle: part I - surgical procedures and classification of lesions          下载免费PDF全文

Ducharme NG  Arighi M  Horney FD  Livesey MA  Hurtig MH  Pennock P 《The Canadian veterinary journal. La revue veterinaire canadienne》1987,28(12):757-762

A prospective study was performed to identify the nature and management of teat abnormalities in cows presented to a referral teaching hospital during a three year period. All cattle (n = 60) admitted to the Ontario Veterinary College for teat problems were evaluated by physical examination; in 53 teats, contrast radiography or xeroradiography were obtained. Surgery was performed on 52 teats from 51 cows and a prosthesis was implanted in 27 teats. Short term (under two weeks) complications included intraoperative bleeding (n = 6), milk leakage through the incision (n = 4), and failure to milk by machine in 26 cases. Histopathological diagnosis of sections taken from obstructive lesions included fibrous tissue (n = 8), normal mammary tissue (n = 3), fibropapilloma, mammary polyps, and inflamed mucosa (one each). The lesion could be classified into five types: 1) focal teat cistern obstruction, 2) diffuse teat cistern obstruction, 3) membranous obstruction, 4) diffuse teat and gland cistern obstruction, or 5) leakage of milk through an abnormal route (i.e. teat fistula, webbed teat, or lacerations).  相似文献   

Reverse phase liquid chromatographic determination of dexamethasone acetate and cortisone acetate in bulk drug substances and dosage forms: method development     

L L NG 《Journal of the Association of Official Analytical Chemists》1987,70(5):829-833

The determination of the steroid acetates was evaluated for ruggedness of the method by using an octyldecylsilane column, 254 nm detection, and acetonitrile-water as mobile phase. Mobile phase pH, oven temperature, and columns from various manufacturers had no dramatic effect on the chromatography. The method was then optimized for dexamethasone acetate and cortisone acetate bulk drug and dosage forms. For dexamethasone acetate, the bulk drug substance should be dried at 105 degrees C before use, and the sample should be dissolved in 50% acetonitrile-buffer pH 6 for stability. Cortisone acetate, on the other hand, was found to be nonhygroscopic and hence could be used as received. For stability, the sample should be stored in 50% acetonitrile-buffer pH 4.  相似文献   

Surgical repair of atresia jejuni in two calves.     

D A Hendrickson  P C Rakestraw  N G Ducharme 《Journal of the American Veterinary Medical Association》1992,201(4):594-596

Two Holstein calves with similar histories of not defecating since birth were determined to have atresia jejuni. Resection of the distended blind end of the jejunum and the remaining jejunum and ileum followed by a jejunocecostomy was performed. One calf died 7 months after surgery of unknown causes. The second calf has survived for greater than 1 year, and has maintained a growth rate similar to other calves its age. Atresia jejuni has been reported to be a universally fatal disorder of unknown pathogenesis. It has been postulated that intestinal atresia is caused by palpation of the amniotic vesicle at the time of pregnancy diagnosis, between days 36 and 42 of gestation.  相似文献   

成年猪结肠肥大细胞的分布     

王家鑫  李景宇  张福君  张海旺  苏建清 《中国兽医杂志》2001,37(9):7-8

成年猪结肠按常规制备石蜡切片,用甲苯胺蓝改良法显示肥大细胞.结果粘膜型肥大细胞(MMCs)主要分布于固有膜深层,不同部位结肠粘膜中MMCs的数量存在极显著差异(P＞0.01),结缔组织型肥大细胞(CTMCs)主要分布于粘膜下层且不存在数量上的区域性差异(P＞0.05).结论猪结肠MMCs的分布类型具有区域异质性特征.  相似文献   

Failure of omasal transport attributable to perireticular abscess formation in cattle: 29 cases (1980-1986)     

S L Fubini  N G Ducharme  H N Erb  D F Smith  W C Rebhun 《Journal of the American Veterinary Medical Association》1989,194(6):811-814

During a 7-year period, failure of omasal transport attributable to a perireticular abscess was diagnosed in 29 cows. Affected cattle were examined because of anorexia, hypogalactia, and bilateral abdominal distention. The cows were all female Holsteins, 15 months to 10 years old. The abscess was identified during exploratory celiotomy and rumenotomy or at necropsy. Traumatic reticuloperitonitis was believed to be the cause. Twenty-seven cattle (93%) were treated surgically. The abscess was drained into the reticulum or omasum in 25 cows (86%). Twenty-four cows (83%) survived to the time of discharge from the hospital, and 20 (69%) survived for at least 1 year and became productive members of the herd. This is a better survival rate than that reported for other causes of vagal indigestion.  相似文献