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Erratum to: A cross-sectional study on bovine tuberculosis in Hawassa town and its surroundings,Southern Ethiopia 总被引:1,自引:1,他引:0
Regassa Alemayehu Tassew Asmelash Amenu Kebede Megersa Bekele Abunna Fufa Mekibib Berhanu Marcotty Tanguy Ameni Gobena 《Tropical animal health and production》2010,42(5):1039-1039
Tropical Animal Health and Production - 相似文献
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A cross-sectional study on bovine tuberculosis in Hawassa town and its surroundings,Southern Ethiopia 总被引:2,自引:2,他引:0
Alemayehu Regassa Asmelash Tassew Kebede Amenu Bekele Megersa Fufa Abunna Berhanu Mekibib Tanguy Macrotty Gobena Ameni 《Tropical animal health and production》2010,42(5):915-920
A cross-sectional study was conducted in Hawassa town and its surroundings from October 2007 to May 2008 to estimate the prevalence
of bovine tuberculosis (BTB) based on comparative interadermal tuberculin test (CIDT) and abattoir survey. Accordingly, 39
herds comprising 413 cattle were subjected to CIDT, and the herd and individual animal prevalence were 48.7% (19/39) and 11.6%
(48/413), respectively. One of the 16 milk samples collected from tuberculin-positive cows was culture positive. The prevalence
significantly differed among the age group (P = 0.001) and management system (P = 0.001). Thus, age group over four (OR = 7.9) and animal with poor management system (OR = 4.1) had a higher odds for tuberculin
reactivity compared to those with age group under four and cattle with good management system, respectively. Of the total
1,023 cattle subjected to postmortem examination, 11 (1.1%) were found to be positive for gross tuberculous lesions. Larger
proportion (50%) of TB lesion was recorded in the respiratory pathway followed by digestive system (28.6%) and prescapular
lymph nodes (21.4%). Of 14 tissue specimens collected from the gross lesions, four (28.6%) were positive for histopathological
TB lesions. In conclusion, this study revealed the importance of BTB in the study area in particular and the region in general. 相似文献
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Gunter Backes Jihad Orabi Asmelash Wolday Amor Yahyaoui Ahmed Jahoor 《Genetic Resources and Crop Evolution》2009,56(1):85-97
Remarkable morphological variation has been found within small Eritrean barley fields. Barley was collected from fields approximately
50 m2 in size. Spike shape, type, and colour were observed to vary both between and within fields. A set of 39 Simple Sequence
Repeats (SSR) markers were used to explore the genetic diversity of the Eritrean barley collected from small-scale farmer’s
fields. Significant genetic diversity was found within the barley fields. Out of 240 spikes collected from 24 fields (10 spikes
per field), only two spikes from geographically distant fields were genetically similar. Based on the SSR data, individual
farmers’ fields were found to possess 97.3% of the genetic variation present in the Eritrean barley. We discuss a strategy
to improve the barley yield in Eritrea, and to facilitate the in situ conservation of barley genetic diversity.
Gunter Backes and Jihad Orabi contributed equally to this work. 相似文献
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Abe Shegro Gerrano Willem Sternberg Jansen Van Rensburg Patrick Olusanmi Adebola Pepukai Manjeru Michael Wolday Bairu Sonja Louise Venter 《Acta Agriculturae Scandinavica, Section B - Plant Soil Science》2019,69(3):219-227
Taro [Colocasia esculenta (L.) Schott] is an important underutilised staple food crop in South Africa, with a lot of potential to address food insecurity among poor rural households. Development of high yielding stable taro cultivars is one of the most important goals of plant breeders. Twenty-nine taro accessions collected from major taro producing regions of the country were evaluated for growth performance, yield potential and stability under dryland conditions at two sites (Umbumbulu and Roodeplaat) in 2013, 2014 and 2015 cropping seasons. The experiment was laid in a randomised complete block design replicated three times. Growth and yield traits were measured. Analysis of variance and correlation analysis was done on all measured traits. The genotype by environment interaction was analysed using additive main effects and multiplicative interaction (AMMI). As a result, significant variation was observed for most of the traits except number of leaves and leaf width as well as number of suckers, while all the traits showed significant variation for location by year interaction. Number of corms showed significant variation for location by year by genotype interaction among all the traits evaluated. Genotype effect was highly significant (p?<?.01) on plant height, corm length, number of corms and significant (p?<?.05) on yield. The significant difference between genotypes for these traits proves that there was a genetic variability and there is a scope for selection. The correlation study also reveals that majority of the characters were positively correlated with each other. Total yield was positively and highly significantly (p?<?.01) correlated with all the measured traits. AMMI was effective in identifying stable genotypes. The top ranking cultivars per environment may be considered for cultivation under the specific environment, the stable cultivars may be considered for cultivation across all the taro growing regions. 相似文献
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