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831.
Yitaye Alemayehu Ayenew Maria Wurzinger Azage Tegegne Werner Zollitsch 《Tropical animal health and production》2009,41(7):1143-1150
In order to characterise the dairy production systems as well as the productive and reproductive performance of dairy cows
in the study area, a total of 256 and 54 dairy farms were used for survey and monitoring data collection, respectively. Based
on breed, land size, feed and market accessibility, two major dairy production systems were identified: a rather specialized,
urban, and a peri-urban dairy production system. Urban farmers owned larger herds but farmed less land, and sold a greater
proportion of liquid milk than peri-urban farmers, who processed more milk. Purchased feed played a more important role for
the feed supply of urban than peri-urban farms. Significant breed effects were found for productive and reproductive performance
traits. It is concluded that improved breeding and health management, genetic improvement of local breeds and supplementation
of poor quality feed resources are the key factors for enhancing productivity of dairy cows and thereby increasing family
income from milk production. 相似文献
832.
Anticancer activity evaluation of kuanoniamines A and C isolated from the marine sponge Oceanapia sagittaria, collected from the Gulf of Thailand 总被引:1,自引:0,他引:1
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The pyridoacridine alkaloids kuanoniamines A and C were isolated together with 24 α-methylcholestanol, p-hydroxybenzaldehyde, p-hydroxybenzoic acid, phenylacetic acid and 3-formylindole from the ethyl acetate extract of the marine sponge Oceanapia sagittaria (Sollas), collected from the Gulf of Thailand. Kuanoniamines A and C were evaluated for their effect on the growth of five human tumour and a non-tumour cell lines, as well as on the proliferation of human lymphocytes. Kuanoniamine A was found to be a potent growth inhibitor of all the tumour and a non-tumour cell lines while kuanoniamine C was less potent but showed high selectivity toward the estrogen dependent (ER+) breast cancer cell line. Kuanoniamine A has shown to be a more potent inhibitor of DNA synthesis than kuanoniamine C. Kuanoniamine A was also found to cause an extensive reduction of the MCF-7 cells in G2/M phase as well as an increase in the apoptotic cells. 相似文献
833.
The review is focused on studies presenting quantitative data and odor activity values (ratio of concentration to odor threshold) of key odorants in bread (wheat and rye), toasted bread, puff pastries made with different fats, fragrant and nonfragrant rices, sweet corn, popcorn, and tortillas. The influence of raw materials, processing parameters, and storage conditions on the concentrations of key odorants and some data on flavor precursors and formation pathways of these compounds are discussed. 相似文献