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31.
Transabdominal and transrectal ultrasonography of fetuses in Württemberg ewes: Correlation with gestational age
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Branko T. Petrujkić Aleksandar Cojkić Katarina Petrujkić Ivan Jeremić Dragan Mašulović Vladimir Dimitrijević Mila Savić Miodrag Pešić Ross C. Beier 《Animal Science Journal》2016,87(2):197-201
It is useful to determine the gestational age in sheep to provide essential information for effective flock management practices. The aims of this study were to evaluate the efficacy and practical aspects for using two ultrasound techniques, transabdominal and transrectal, in determining the gestational age in Württemberg ewes. Monitoring of embryo and fetus developmental stages during the ewes’ gestation was carried out with real time ultrasound using a transabdominal convex probe, frequency 3.5 MHz, and a transrectal linear probe, frequency 7.5 MHz. The size of the embryonic vesicle during the period from the 23rd to the 38th day of gestation can be used as a confirmational indicator of gestational age when the transrectal probe is used. The occipital nasal diameter correlated with the gestational age with both transabdominal (P < 0.05) and transrectal probes (P < 0.01) from the 46th to the 63rd day of gestation. The biparietal diameter of the fetal head measured by transabdominal probe during the period from the 46th to the 63rd day of gestation correlates with gestation age (P < 0.05). The diameter of the fetal eye orbit monitored by transrectal probe from the 46th to the 63rd day of gestation also correlated well with gestational age (P < 0.05). 相似文献
32.
Branko Glamuzina Pero Tutman Luka Glamuzina Zoran Vidović Predrag Simonović Lorenzo Vilizzi 《Fisheries Management and Ecology》2021,28(2):138-146
Biological invasions are a major driver of global environmental change as invasive non-native species can exert severe environmental impacts on invaded ecosystems. Estuaries are especially vulnerable to biological invasions, which in highly urbanised areas are further facilitated by introduction pathways linked to commercial activities. This study provides a risk screening of non-native invasive species for the highly urbanised River Neretva Estuary (Eastern Adriatic Sea: Croatia and Bosnia–Herzegovina). In total, 12 species of non-native aquatic organisms were identified and screened for their invasiveness with the Aquatic Species Invasiveness Screening Kit. Of these species, eight were classified as carrying a high risk of invasiveness under current climate conditions and nine under future climate conditions. Amongst the high-risk species, blue crab Callinectes sapidus has already caused impacts in the risk assessment area, where it also represents an important economic resource. The “horizon” species Pacific oyster Crassostrea gigas and Manila clam Ruditapes philippinarum also carried a high risk of invasiveness, which for the latter species applied under predicted global warming. The present findings will contribute towards preventative management and control measures for the conservation of the natural ecosystem of the River Neretva Estuary whilst accounting for aquatic farming demands. 相似文献
33.
Savo Vuckovic Ivana Stojanovic Slaven Prodanovic Branko Cupina Toma Zivanovic Svetko Vojin Slavica Jelacic 《Genetic Resources and Crop Evolution》2007,54(2):421-428
Birdsfoot trefoil (Lotus corniculatus L.) is a highly variable and widely distributed Old World perennial forage legume found in wild and naturalized populations
throughout temperate regions of Europe, Asia Minor, North Africa, North and South America, Australia, and New Zealand. Understanding
the relationships among birdsfoot trefoil morphological, ecogeographic and chemical characteristics may provide insights for
better utilizing of exotic germplasms. Ten birdsfoot trefoil populations were and sampled and determined in Serbia and Bosnia
and Herzegovina. Some morphological properties, such as growth form of populations, flower color, flowering period, number
of stems, length of main stem, number of racemes per stem, number of flowers per inflorescence, number of pods per racemes,
number of seeds per pods, hard seeds in the first year, dry matter (DM) yield, and some chemical properties, such as content
of crude protein, ash, fat, crude fiber, phosphorus, calcium, magnesium, potassium, K/(Ca+Mg) ratio, and sulfur, manganese,
iron, copper, zinc, selenium and tannin contents, were determined in all populations. Serbia is an important origin center
of genes for many legume species. Considering the high values of their traits, some Serbian trefoil populations could serve
as a valuable breeding material. In comparison with populations from other parts of the world, Serbian populations are superior
in chemical properties and nutritional quality values. The investigated populations clustered in two distinct groups according
to the analyzed characteristics. 相似文献