笃斯越桔硬枝扦插繁殖技术研究

采用笃斯越桔硬枝扦插,用生根剂处理插穗,并在不同的基质上进行扦插试验,结果表明:笃斯越桔硬枝扦插用河沙作为基质最好,生根剂ABT处理的插穗生根率最高。     

番茄对钾的吸收和分配的研究

对两个番茄品种，吸钾量的研究表明，“渝抗二号”番茄对Ｋ＾＋的吸收率较高，“早丰”番茄地上部分Ｋ＾＋的分配较多。当用ＮａＮＯ３代替营养液中的ＫＮＯ３后，Ｋ＾＋的分配比例与完全培养液中的植株相似，但分配到地上部的比例较小。加Ｎａ＾＋后，“渝抗二号”植株的叶和茎中的含Ｋ＾＋量比“早丰”更多，表明不同番茄品种在不同的Ｋ＾＋和Ｎａ＾＋环境中，有着明显不同的离子吸收和分配机制。     

秋水仙素对四季桔多倍体的诱导效应

以四季桔（Fortunella calamondin）种子为外植体，研究了秋水仙素对多倍体诱导的影响，结果表明：将种子用秋水仙素溶液漫渍比直接接种在含秋水仙素的培养基上，诱导多倍体的效果更好，用0．2％秋水仙素溶液浸渍种子12．75h，诱导率最高，达14．4％；在含0．2％秋水仙索的培养基上培养50d，诱导率为9．8％；变异植株叶片变大，茎变粗，有少量植株出现三出复叶突变；变异植株的气孔明显大于二倍体植株，气孔密度降低。     

杜鹃花新品种‘朝晖’和‘红晕’

 ‘朝晖’杜鹃花是由大白花杜鹃和马缨花杂交选育而成, 叶面灰绿色, 顶生圆锥伞房花序, 有花10～12 朵, 花冠紫红色。‘红晕’杜鹃花是由露珠杜鹃和马缨花杂交选育而成, 叶浅绿色, 花冠漏斗状钟形, 花冠上部粉红色, 下部乳黄色, 有紫红色斑点。     

猪附红细胞体病的诊断和防治

近年我县发生了一种类似猪瘟症状的疾病 ,表现为高热、嗜睡、全身发红等 ,导致猪群 (特别是仔猪 )大批死亡。经采用注射青霉素、链霉素、磺胺类药、退烧解毒药等治疗 ,效果不理想。特别是在使用磺胺类药物后 ,会加重病情。该病在我县呈蔓延趋势 ,给广大养殖户造成了很大的经济损失。后与省畜牧研究所联合研究 ,根据临床症状、病理剖检、实验室检查等 ,确诊为猪附红细胞体病。经对症下药 ,很快控制了该病的流行和蔓延 ,确保养殖业的健康稳定发展。1流行病学特点本病一年四季均可发生 ,但以夏秋多发。蚊等吸血节肢昆虫可传播该病 ,各种年龄、…     

Can treatment of <Emphasis Type="Italic">Brachiaria decumbens</Emphasis> (signal grass) improve its utilisation in the diet in small ruminants?—a review

Brachiaria decumbens is an extremely productive tropical grass due to its aggressive growth habit and its adaptation to a varied range of soil types and environments. As a result of the vast availability, treated B. decumbens demonstrates as a promising local material that could be utilised as an improved diet for sheep and goats. Despite the fact that the grass significantly increases weight gains in grazing farm animals, there were many reports of general ill-thrift and sporadic outbreaks of photosensitivity in livestock due to the toxic compound of steroidal saponin found in B. decumbens. Ensiling and haymaking were found to be effective in removing toxin and undesirable compounds in the grass. Biological treatments using urea, activated charcoal, polyethylene glycol, and effective microorganisms were found to be useful in anti-nutritional factor deactivation and improving the nutritive values of feedstuffs. Besides, oral administration of phenobarbitone showed some degree of protection in sheep that fed on B. decumbens pasture. In this review, we aim to determine the effect of B. decumbens toxicity and possible treatment methods on the grass to be used as an improved diet for small ruminant.     

Genomic characterization of the first oral avian papillomavirus in a colony of breeding canaries (<Emphasis Type="Italic">Serinus canaria</Emphasis>)

Papillomaviruses are non-enveloped, DNA viruses that infect skin and mucosa of a wide variety of vertebrates, causing neoplasias or simply persisting asymptomatically. Avian papillomaviruses, with six fully sequenced genomes, are the second most studied group after mammalian papillomaviruses. In this study, we describe the first oral avian papillomavirus, detected in the tongue of a dead Yorkshire canary (Serinus canaria) and in oral swabs of the same bird and other two live canaries from an aviary in Madrid, Spain. Its genome is 8,071 bp and presents the canonical papillomavirus architecture with six early (E6, E7, E1, E9, E2, E4) and two late open reading frames (L1 and L2) and a long control region between L1 and E6. This new avian papillomavirus L1 gene shares a 64% pairwise identity with FcPV1 L1, so it has been classified as a new species (ScPV1) within the Ethapapillomavirus genus. Although the canary died after showing breathing problems, there is no evidence that the papillomavirus caused those symptoms so it could be part of the oral microbiota of the birds. Hence, future investigations are needed to evaluate the clinical relevance of the virus.     

Knowledge,attitudes and practices towards <Emphasis Type="Italic">cystic echinococcosis</Emphasis> in livestock among selected pastoral and agro-pastoral communities in Uganda

A cross-sectional study was done from March 2013 to May 2014 to assess knowledge, attitudes, and practices towards cystic echinococcosis (CE) or hydatidosis among selected pastoral and agro-pastoral communities in Uganda. A structured questionnaire was administered to 381 respondents. Multivariate logistic regression analysis was done to find the relationship between knowledge about CE and factors such as age, sex, and level of education across all regions. The odds ratio and confidence interval were used to determine the difference in responses across regions. It was shown that age above 36 years was significantly (p < 0.001) associated with awareness about CE in livestock. Likewise, uneducated (p < 0.0001) and agro-pastoralists (p = 0.01) were significantly less knowledgeable than the educated and pastoralists across all regions. The overall knowledge towards CE in livestock was low 17.8% (95% CI = 14.0–21.6). Dog ownership was high and they never dewormed their freely roaming dogs. Dogs shared water with livestock. In conclusion, knowledge about CE in livestock was low across all regions. Therefore, public health education and formulation of policies towards its control by the relevant stakeholders should be done. Also, the true prevalence of CE in livestock needs to be done so that the magnitude and its public health significance are elucidated.