Božo Važić, Biljana Rogić, Ivan Pihler, Milanka Drinić and Nebojša Savić
The purpose of this study is to determine the morphometric characterization of Dubska Pramenka sheep and to establish a relationship between the most important body measurements of ewes and rams within the strain. The Dubska Pramenka is one of the biggest strains within the Pramenka breed. The wither heights of ewes and rams were 73.37 cm and 79.92 cm respectively, whereas the body lengths were 74.66 cm (ewes) and 80.42 cm (rams), and the rump heights were 73.72 cm (female) and 80.16 cm (male). Based on the data presented, it is evident that the Dubska Pramenka sheep has almost a square body shape with the rump height slightly greater than the wither height. The chest depth and shoulder width of ewes were 34.50 cm and 22.72 cm respectively, whereas those of males were 36.17 cm and 23.75 cm. In both sheep genders, the hip width (ewes 21.92 cm, rams 22.91 cm) was lower than the shoulder width. The chest and shin perimeters of females were 98.72 cm and 9.31 cm respectively, whereas those of males were 103.25 cm and 10.91 cm. The most significant correlation and statistical significance were recorded in relation to the measured wither and rump heights (r = 0.856 for females, r = 0.856 for males) due to their constant increase during the growth and development of sheep. Conversely, the measurements of rump heights and chest perimeters did not indicate any correlation (r = −0.028 for ewes, r = 0.004 for rams).
Dragan Radojković, Radomir Savić, Mladen Popovac, Čedomir Radović and Marija Gogić
ARANGO J., MISTZAL I., TSURUTA S., CULBERTSON M., HERRING W.: Threshold-linear estimation of genetic parameters for farrowing mortality, litter size, and test performance of Large White sows. J. Anim. Sci., 83: 499-506, 2005.
CHEN P., BAAS T.J., MABRY J.W., KOEHLER K.J.: Genetic correlations between lean growth and litter traits in U.S. Yorkshire, Duroc, Hampshire and Landrace pigs. J. Anim. Sci., 81: 1700-1705, 2003.
CLUTER A.C., BRASCAMP E.W.: Performance traits. In: The genetics of the pig, Ed. Rothschild M.F., Ruvinsky A., CAB
The apple (Malus domestica Borkh.) possesses a number of health-promoting properties. The main beneficial effects of apple fruits on human health are associated with the antioxidant properties of components synthesising in apple fruits during their growth and development. Phenolic compounds and flavonoids are such components that contribute significantly to the antioxidant capacity of fruits, thus enhancing their health properties. The purpose of this study is to compare the antioxidant properties (namely antioxidant capacity, ascorbic acid, total phenolic and flavonoid contents) of the ‘Idared’ and ‘Braeburn’ apple cultivars, grown under optimal growing conditions in the Goražde area. Ascorbic acid contents were estimated using the 2.6-dichlorophenolindophenol titration method, whereas total phenolics were determined using the Folin-Ciocalteu method. Furthermore, total flavonoids were determined using the aluminium chloride colorimetric assay, whereas the ferric reducing/antioxidant power assay was used to determine the total antioxidant capacity of the apple fruits examined. The average values of the ascorbic acid, the total phenolic and flavonoids contents, and the total antioxidant capacity of the ‘Idared’ apples under consideration were 8.09 mg 100 g−1, 34.56 mg gallic acid equivalents 100 g−1, 12.62 mg catechin equivalents 100 g−1 and 323.28 μmol Fe2+ 100 g−1of fresh weight, respectively. The average values of the total phenolic and flavonoids contents, as well as the antioxidant capacity of the ‘Braeburn’ apples examined were as follows: 8.89 mg 100 g−1, 33.4 mg gallic acid equivalents 100 g−1, 13.56 mg catechin equivalents 100 g−1 and 367.01 μmol Fe2+ 100 g−1 of fresh weight, respectively. The analyses performed indicate that the differences recorded in the parameter values between the apple cultivars ‘Idared’ and ‘Braeburn’ were statistically non-significant. A correlation data analysis confirmed that phenolic compounds are the carriers of the antioxidant activity of apples.
Radiana-Maria Tamba-Berehoiu, Ciprian N. Popa, Luminiţa Valerica Vişan, Vasilica Simion, Ricuţa Vasilica Dobrinoiu and Silvana Mihaela Dănăilă-Guidea
correlation coefficients between rheological properties of the wheat bread doughs and baking performance of the corresponding wheat flours. Trends in food science & technology, 24(1), 13-18.
Tronsmo K. M., Magnus E. M., Baardseth P., Schofield J. D., Aamodt A., FærgestadE. M., 2003. Comparison of small and large deformation rheological properties of wheat dough and gluten. Cereal Chemistry, 80(5), 587-595.
Van BockstaeleF., De Leyn I., Eeckhout M., Dewettinck K., 2008. Rheological properties of wheat flour dough and the relationship with
Branka Popović, Snežana Tanasković and Sonja Gvozdenac
From the economic perspective, the western corn rootworm (WCR), Diabrotica virgifera sp. virgifera (Col., Chrysomelidae), poses the gravest threat to the field maize production in Serbia. The purpose of this study is to examine the impact of WCR larvae on the morphology of maize characters during a low-level artificial egg infestation. A field experiment involving the Serbian cultivar ‘NS-640’ was carried out in Bečej, Vojvodina Serbia, in 2016. In the experimental field, a total of 96 maize plants were selected, marked and arranged in 48 pairs. Each pair consisted of an infested plant (WCR eggs injected in the root zone) and an uninfested plant (distillate water injected in the root zone). The number of leaves, height and stem diameter of the plants observed were recorded. Root damage and root weight were measured and evaluated at the end of the trail. For the purpose of statistical analysis, the non-parametric Kruskal-Wallis one-way analysis of variance and a correlation matrix were used. The statistical analysis performed indicate a highly significant difference in the number of leaves and plant height between the infested and uninfested maize plants examined in July (the third field observation). During the last field inspection, significant differences were recorded only between the stem diameters of the infested and uninfested maize plants. A negative correlation was found to exist between the root damage and root weight of the plant pairs. There were positive correlations between the stem diameter, plant height and number of leaves of the infested plants, whereas positive correlations were found between the root damage and plant height of the uninfested plants.
Sweet cherries (Prunus avium L.) contain various phenolic compounds which contribute to total antioxidant activity. The present study was conducted to assess the antioxidant activity of 15 sweet cherry cultivars from Vojvodina province (north Serbia). The free radical scavenging properties of fruits were evaluated employing two different methodologies, including DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging assay and ferric reducing antioxidant power (FRAP) assay. Strong correlations were found between total phenolics, tannins, flavonoids and anthocyanins and DPPH and FRAP assays. In particular, cultivar Peter showed the highest antioxidant capacity and possesses the highest amount of measured phenolic compounds. This investigation shows large variability among sweet cherry cultivars in measured chemical attributes.
Claudiu-Valeriu Angearu, Anisoara Irimescu, Denis Mihailescu and Ana Virsta
Drought is one of the most significant extreme event facing the world, affecting the society and the environment. Located in SE Romania, Dobrogea Region is characterized by a temperate climate with strong continental influences, being affected by drought episodes which cause significant damages and economic costs over extensive agricultural areas. Risk reduction, continuous vegetation monitoring, and management implementation are facilitated by complementary use of vegetation indices and biophysical parameters derived from satellite products (gridded data) within-situ data (point data). The paper focuses on:i) evaluating the extent and intensity of drought in Dobrogea, Romania, based on Normalized Difference Drought Index (NDDI) and Fraction of Absorbed Photosynthetically Active Radiation (FAPAR); ii) fires analysis, based on the Thermal Anomalies/Fire locations product (MCD14DL); iii)the correlation between the fires with the NDDI; iv) and the correlation between fires with the Land Surface Temperature (LST) product. The vegetation indices, biophysical parameters and fires are computed from Moderate Resolution Imaging Spectroradiometer (MODIS) daily and eight days’ synthesis products, during 22th of March - 29th of August 2000-2015. The results highlight the areas most affected by drought (moderate, severe and extreme) and fires in the Dobrogea.
Saša Kostić, Jelena Čukanović, Mirjana Ljubojević, Emina Mladenović, Snežana Mrđan and Nina Svilokos
The purpose of this paper is to analyze relations between seed quality characteristics and the influence of contaminated urban areas on seed quality of sycamore maple trees in different locations across Novi Sad (Serbia). This research analyzed seed germination of 29 adult trees of sycamore maple (Acer pseudoplatanus L.) and its red leaf variety (Acer pseudoplatanus ‘atropurpureum’ Späth.). Our results indicate a medium strong positive correlation between seed weight and viable seed. Sycamore maple trees from the same urban typology do not have significant influence on seed quality characteristics, while different urban typology has such influence. These results explain the negative influence of urban areas on seed quality characteristics. For selection of high value trees in urbanized and contaminated areas, seed quality can be the indicator of adaptability to stress related conditions.
Ionuț Șerban Negoiță, Florica Bărbuceanu, Nicolae Dojană and Rosalie Adina Bălăceanu
The experiment was carried out on four groups of Hy-Line var. Brown hens (n = 350 each) fed on diets which provided 2.49, 3.07, 3.78 and, respectively, 4.15 g% calcium (Ca) during the laying period. Consequently, mean daily Ca intake was 2.74, 3.38, 4.16 and 4.60 g/cap., respectively. Ca metabolism was assayed at 20 weeks of age (start of the laying), 36 weeks of age (the peak of the laying) and 68 weeks (the end of the laying period). A significant part of the ingested Ca was not absorbed. The percentage of Ca exonerated by feces was higher at the start of the laying and lowers in the peak of laying and at the end of the laying period. The amount of Ca exonerated as unabsorbed Ca increases as the amount of ingested Ca increases inside of each age level. It was found also an increase of the Ca content of the egg shell according the Ca intake statistically significant (P<0.05) in 36- and 68-wk.-old hens, but not in 20-wk.-old hens. Blood plasma Ca showed significantly higher values in 3.38-, 4.16- and 4.60-g/day-Ca-intake groups when compared by 2.74-g/day-Ca-intake group (P < 0.05) but the level of increasing showed lowest values in hen groups with highest intake of Ca. The daily eggshell Ca export strongly correlates with the amount of daily Ca intake in 36-wk.-old hens and 68-wk.-old hens: r = +0.72 and +0.84, respectively, but no correlation was found in 20-wk.-old hens (r = -0.74, negative correlation). The results showed a limited physiologic capacity of the Ca absorption in hen, the Ca surplus being lost. Dietary Ca level should be closely correlated with the laying level of hens.
The aim of this research was to investigate the microbial activity in forest soil from different sites under deciduous and coniferous trees in Serbia. One site on Stara planina was under beech trees (Fagus sp.) while another under mixture of spruce (Picea sp.) and Douglas fir (Pseudotsuga sp.). The site on Kopaonik was under mixture of beech (Fagus sp.) and spruce (Picea sp.) trees. The site on Tara was dominantly under fir (Abies sp.), beech (Fagus sp.) and spruce (Picea sp.). The total number of bacteria, the number of actinobacteria, fungi and microorganisms involved in N and C cycles were determined using standard method of agar plates. The activities of dehydrogenase and ß-glucosidase enzymes were measured by spectrophotometric methods. The microbial activity was affected by tree species and sampling time. The highest dehydrogenase activity, total number of bacteria, number of actinobacteria, aminoheterotrophs, amylolytic and cellulolytic microorganisms were determined in soil under beech trees. The highest total number of fungi and number of pectinolytic microorganisms were determined in soil under spruce and Douglas fir trees. The correlation analyses proved the existence of statistically significant interdependency among investigated parameters.