检索结果-南通市图书馆

The Effect of Different Levels of Salinity and Potassium Nitrate on the Germination of cocks Comb (<i>Celosia cristata</i>)

引用

Open Journal of Ecology 2017年第4期7卷 289-299页

作者： Zahra Golshadi Ghaleh-Shahi Hossein Zarei Mehrdad Babarabie Atoosa Danyaei Madeh Ahmadi Sima Badeli Department of Horticulture Gorgan University of Agricultural Sciences and Natural Resources Gorgan Iran Young Researchers and Elite Club Gorgan Branch Islamic Azad University Gorgan Iran Department of Horticultural Sciences Dr. Shariaty Faculty Technical & Vocational University Tehran Iran

cocks Comb (Celosia cristata) is a hot-season annual species which is grown from seeds. A study was carried out in the horticulture laboratory of Gorgan University of Agriculture Science and Natural Resources of February 2013 to evaluate the impact of salinity and potassium nitrate on the germination of cockscomb with five salinity levels (0, −2, −4, −6, and −8 bars) and three potassium nitrate levels (0%, 0.2%, and 0.4%) at 25°C on the basis of a Randomized Complete Block Design. Analysis of variance showed significant differences among salinity levels in germination percentage, radicle length, plumule length, and seed vigor at the 1% probability level. Mean comparison for germination percentage revealed that higher salinity reduced seed germination percentage so that it was decreased from 80% in no salinity to 15% in −8 dS⋅m−1. The highest percentage of germination was related to zero percent salt and potassium nitrate 0.2%. Also, the highest radicle length of 2.48 cm was related to no salinity and the lowest one (0.61 cm) to −6 dS salinity. The highest radicle length and seed vigor were also observed in no salinity. Potassium nitrate by itself had no impact on the measured traits. Among interactions between salinity and potassium nitrate, the highest germination percentage was observed under 0 salinity × 0.2% potassium nitrate.

关键词： Amarantaceae cocks Comb Germination Percentage Potassium Nitrate Salinity

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Comparison of the Anthelmintic Efficacy of Three Commercial Products against Ascarids and Capillaria SPP. in Fighting cocks

引用

Pharmacology & Pharmacy 2011年第3期2卷 146-150页

作者： Froylán Ibarra-Velarde Cristina Guerrero-Molina Yolanda Vera-Montenegro Yazmín Alcalá-Canto Evangelina Romero-Callejas Departamento de Parasitologia Facultad de Medicina Veterinaria y Zootecnia de la Universidad Nacional Autonoma de Mexico

The aim of the present study was to evaluate the anthelmintic efficacy of three commercial compounds against ascarids and Capillaria spp. in naturally infected fighting cocks from Mexico. First experiment.- Forty cocks were selected on the basis of eggs per gram (EPG) counts quantified by the McMaster method. On day 0 the birds were divided into four groups of 10 cocks, each subjected to the treatments. Group 1 received a single oral dose of 1 mg of ivermectin, 25 mg of praziquantel and 40 mg of fenbendazole given in tablets according to body weight (b.w). Group 2 was treated with a single oral dose of 1 mg of ivermectin, 25 mg of praziquantel and 40 mg of fenbendazole given in tablets/b.w. but formulated with a different excipient. Group 3 received a single tablet containing 0.2 mg of abamectin and 30 mg of albendazole. Group 4 served as a non-treated control. Fecal analyses were carried out on days 0 (day of treatment), 7, 14, 21 and 28, being collected from the floor where the cocks were individually caged. Efficacy was measured on the percentage of egg reduction from day 0 with respect the EPG counts from the control group. In a second experiment the study was similarly performed using another cock-farm located at approximately 300 km away from the first one. Results indicated an overall efficacy of 100%, 94.0% and 100% for groups 1, 2 and 3 in the first experiment and 100%, 100%, 100% for groups 1, 2 and 3 of the 2nd experiment, respectively. It is concluded that all drugs used exerted high efficacy in fighting cocks naturally infected with helminths.

关键词： Anthelmintic Efficacy Commercial Drugs Fighting cocks

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Use of factor scores for determining the relationship between body measurements and semen traits of cocks

引用

Open Journal of Animal Sciences 2012年第1期2卷 41-44页

作者： Udeh Ifeanyichukwu Department of Animal Science Delta State University Asaba Campus

Semen evaluation is required to predict fertility. In most rural African communities, facilities for microscopic evaluation of semen are not available. Therefore, an indirect method of predicting semen traits of cocks is required by poultry farmers. The objective of this study was to use factor scores derived from factor analysis of body measurements to predict some semen traits of cocks. Correlation matrix was obtained by calculating the correlations between body measurements and semen traits of cocks. Kais-er-Meyer-Olkin (KMO) measure of sampling adequacy and Bartletts test of sphericity were used to test the appropriateness of factor analysis on the data. The extraction of the factors was done by calculating the eigenvalues of the correlation matrix. Variance maximizing rotation of the transformation matrix was done to facilitate the interpretation of the factor loadings. Two factors with eigenvalues greater than 1 were extracted which accounted for 76.96% of the variations present in the original variables. The two factors were used to obtain the factor score coefficients. When utilized as independent variables in multiple regression analysis, the two factors explained 53.20% and 40.80% of the variations in sperm motility and sperm concentration respectively. Factor 1 had more impact on sperm motility than factor 2 as it was significantly related to it. Factor 2 was significantly more related to sperm concentration than factor 1. The relationship between body measurements and semen volume, live sperm and abnormal sperm were weak and mostly negative. Therefore, they were not predicted using factor scores.

关键词： cocks Factor Scores Multiple Regression Semen Traits

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Arsenic trioxide attenuates NF-κB and cytokines mRNA levels in the livers of cocks

引用

畜牧与饲料科学 2015年第Z1期 342-342页

作者： ZHANG Kexin ZHAO Panpan GUO Guangyang GUO Ying TIAN Li SUN Xiao LI Siwen HE Ying SUN Ying CHAI Hongliang ZHANG Wen XING Mingwei Northeast Forestry University

Arsenic is a trace element widely found in *** exists in several forms,including trivalent arsenic and is the most *** trioxide（As2O3） is widespread in *** tends to accumulate in animals and humans and therefore has a potential for great *** play essential roles in the immune response and *** the importance of cytokines in the responses to arsenic exposure has been demonstrated in many types of mammals,the function of these in poultry,especially in chickens,remains *** this study,72 one-day-old male Hy-line cocks were randomly divided into four groups including control group,low-As group,middle-As group and high-As *** were fed either a commercial diet or an arsenic-supplement diet containing 7.5,15,or 30 mg/kg As2O3 for 90 *** livers were collected on days 30,60,90 of the *** levels of Nuclear factor kappa B（NF-κB）,TNF-α,IL-4,IL-6,IL-8,IL-12β and IL-1β mRNA in the livers of the chickens were detected using real-time ***-κB seemed to be a critical mediator in the inflammatory *** results showed that mRNA expression levels of IL-6,IL-8,TNF-α and NF-κB tended to increase in the birds chronically treated with arsenic ***,the mRNA expression levels of IL-4,1L-12β and IL-1β were decreased in the *** results demonstrated that arsenic toxicity affected the liver function of chickens in vivo by regulating the cytokines levels.

关键词： arsenic toxicity liver NF-κB cytokines cocks

来源：

同方期刊数据库评论

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：