Experimental Erysipelothrix and streptococcal endocarditis in rat     

A Kast  M Herbst  L Stoll 《Veterinary pathology》1971,8(2):146-174

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The fermentative capacity of growing pigs and adult sows fed diets with contrasting type and level of dietary fibre     

Henry Jrgensen  Anja Serena  Mette S. Hedemann  Knud Erik Bach Knudsen 《Livestock Science》2007,109(1-3):111-114

Adult sows have a more developed gastro-intestinal system than young growing pigs resulting in a superior capacity to digest fibrous components. The main objective of this study was to describe the capacity of sows and growing pigs to digest the fibre components in concentrated low dietary fibre (DF) diet and two high DF diets similar in DF but with contrasting DF solubility. Six sows and four growing pigs were fitted with a simple T-cannula at the terminal ileum. Each balance experiment consisted of a 7-day initial period followed by a 3-day collection of faeces and a 2 or 3-day collection of ileal digesta for growing pigs and adult sows, respectively. When feeding diets with high proportions of soluble non-starch polysaccharides (NSP), the difference in fermentation capacity between growing pigs and adult sows was small. The adult sows showed a higher fermentative capacity, evidenced by a higher fermentation and a higher methane production, when high fibre diet with high amount of insoluble fibre was fed.  相似文献   

Palms in Indigenous and Settler Communities in Southeastern Ecuador: Farmers’ Perceptions and Cultivation Practices     

Anja Byg  Henrik Balslev 《Agroforestry Systems》2006,67(2):147-158

Most palms used in agroforestry systems are exploited from wild stands or are only occasionally cultivated, while only a few palms have been domesticated. In this study we investigated how socio-economic factors and people's perceptions of changes in palm use and availability, influenced palm cultivation among indigenous Shuar and mestizo settlers in south-eastern Ecuador. We also looked at how different uses of palms influenced which species they cultivated. Our results showed that perceptions of declining palm availability in combination with heavy reliance on palm products was positively related to palm cultivation. Hence, cultivation was more common in more remote villages where alternative products were hard to get. In addition, palm cultivation was more common among wealthier people and among indigenous people than among recent settlers. This points to a limiting role of assets such as land and to the importance of history and culture with regard to cultivation. It was not possible to identify any single palm use as the primary reason for cultivating a species, but the more uses a species had, the more likely it was to be cultivated. These findings have important implications for development projects that promote cultivation of palms and other long-lived tree crops. They illustrate how market access and lack of necessary assets may undermine cultivation of native species even though these are regarded as important resources.  相似文献   

History, manufacture and properties of lime bast cordage in northern Europe     

Myking  Tor; Hertzberg  Anja; Skroppa  Tore 《Forestry》2005,78(1):65-71

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The gene expression pattern induced by high plating density in cultured bovine and buffalo granulosa cells might be regulated by specific miRNA species     

Vengala Rao YENUGANTI  Vijay Simha BADDELA  Anja BAUFELD  Dheer SINGH  Jens VANSELOW 《The Journal of reproduction and development》2015,61(2):154-160

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Is “milk crust” a transient form of golden retriever ichthyosis?          下载免费PDF全文

Anja Roethig  Kirsti J. M. Schildt  Monika M. Welle  Brett E. Wildermuth  Reto Neiger  Nina Thom 《Veterinary dermatology》2015,26(4):265-e57

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Eimeria bovis infection modulates endothelial host cell cholesterol metabolism for successful replication     

Penny H. Hamid  Joerg Hirzmann  Katharina Kerner  Gerald Gimpl  Guenter Lochnit  Carlos R. Hermosilla  Anja Taubert 《Veterinary research》2015,46(1)

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Hydrolysis of cellobiose by β-glucosidase in the presence of soil minerals - Interactions at solid-liquid interfaces and effects on enzyme activity levels     

Carlo Lammirato  Anja Miltner  Matthias Kästner 《Soil biology & biochemistry》2010,42(12):2203-2210

Extracellular enzymatic activities in soils are essential for the cycling of organic matter. These activities take place in multiphase environments where solid phases profoundly affect biocatalytic activities. Aspergillus niger is ubiquitous in soils; its β-glucosidase plays an important role in the degradation of cellulose, and therefore in the global carbon cycle and in the turnover of soil organic matter. However, the information on the interactions of this protein with soil minerals is very limited, and even less is known about their consequences for the hydrolysis of the natural substrate cellobiose. We therefore characterised the sorptive interactions of this enzyme with the soil minerals montmorillonite, kaolinite and goethite and quantified the resulting changes in the hydrolysis rate of cellobiose. Fractions of adsorbed protein, and the resulting catalytic activity loss, were lower for montmorillonite than for kaolinite and goethite at given experimental conditions; adsorption was 9.7 ± 7.3% for montmorillonite, 70.3 ± 3.1% for kaolinite and 71.4 ± 1.8% for goethite, respectively. Adsorption of the protein to the minerals caused a total decrease in the catalytic activity of 18.8 ± 3.4% for kaolinite and 17.9 ± 4.7% for goethite whereas it was not significant for montmorillonite. The average catalytic activity lost by the pool of adsorbed molecules was 26.8% for kaolinite and 25.0% for goethite. Both the amount of adsorbed protein and the resulting loss of catalytic activity were found to be independent of the specific surface areas yet were influenced by the electrical properties of the mineral surfaces. Under the experimental conditions, montmorillonite and kaolinite are negatively charged whereas goethite is positively charged. However, because of the adsorption of phosphate anions from the buffer, a charge reversal took place at the surface of goethite. This was confirmed by zeta (ζ)-potential measurements in phosphate buffer, revealing negative values for all the tested minerals. Indeed goethite interacted with the enzyme as a negatively charged surface: the amount of adsorbed protein and the resulting catalytic activity loss were very similar to those of kaolinite. Our results show that, even if an important fraction of β-glucosidase is adsorbed to the minerals, the catalytic activity is largely retained. We suggest that this strong activity retention in presence of soil minerals results from a selective pressure on A. niger, which benefits from the activity of the adsorbed, and thus stabilized, enzyme pool.  相似文献   

Distribution and Origin of Hybrid Necrosis Genes in German Winter Wheat (Triticum aestivum L.) Cultivars     

Anja  Oetmann F. J. Zeller 《Plant Breeding》1989,103(3):207-211

Hybrid necrosis in Triticum is known to be caused by the interaction of two complementary dominant genes. In the present paper, the genotypes for hybrid necrosis of 64 winter wheat cultivars are presented. 41 cultivars were found to possess the Ne₂ necrosis gene, whereas 23 cultivars were non-carriers. The Ne₁ gene was not found in any of the cultivars analyzed.  相似文献   

Identification of somatic hybrids of dihaploid Solanum tuberosum lines and S. brevidens by species specific RAPD patterns and assessment of disease resistance of the hybrids     

Veli-Matti Rokka  Yong-Sheng Xu  Jyri Kankila  Anja Kuusela  Seppo Pulli  Eija Pehu 《Euphytica》1994,80(3):207-217

Summary Symmetric somatic hybrids were produced by electrofusion of protoplasts of two dihaploid tuber-bearing potato (Solanum tuberosum L.) lines and Solanum brevidens Phil., a diploid non-tuber-bearing wild potato species. A total of 985 plants was obtained. Verification of nuclear hybridity of putative hybrids was based on additive RAPD patterns, general morphological characteristics and chromosome counts. 53 (90%) calli regenerated into plants which were identified as somatic hybrids. Most of the hybrids were aneuploids at the tetraploid (4×) or hexaploid (6×) level. The 20 hybrids tested expressed a high level of resistance to potato virus Y (PVY ^N ) characteristic of the S. brevidens parent. Resistance to late blight (Phytophthora infestans (Mont.) de Bary) varied between hybrids, but was on average better than that of the fusion parents. Resistance of hybrids to bacterial stem rot (Erwinia carotovora subsp. atroseptica (van Hall) Dye) was not superior to that of commercial potato cultivars.  相似文献