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Anatomical aspects of the celiac artery in lamb
No full textAmong different species there are comparable structural characteristics in tissues and organs, but they also have different particularities responsible for certain functions. The components of the cardiovascular system should correspond to the solicitations given by the pressure and blood flow in a particular segment. If the solicitations exceed a particular threshold, the functional adaptation requires supporting morphological changes. The development of the circulatory system in lambs is correlated with the development of the digestive system, the type of nutrition and the characteristics of this species as ruminants. To capture the adaptive changes we resorted to anatomical investigations. The aim of this research was to identify and describe the particularities of the celiac artery in lambs. The study included 15 hybrid Merino lambs, 4-6 months old, sacrificed by the breeder. After removing the skin, the abdominal aorta was identified through stratigraphic dissection. Further on, latex and red coloring substance were injected. This facilitated the following stratigraphic dissection which worked towards the identification of the celiac artery with its collaterals and terminals. We identified that the celiac artery has its origin on the ventral wall of the abdominal in 3 terminal branches: the splenic artery, the hepatic artery and the left gastric artery. All terminal arteries give collaterals to the forestomach. On its trajectory the celiac artery gives only one collateral branch, the caudal phrenic artery. In conclusion, through the collaterals of aorta, near the diaphragm. From the origin, it has a ventro-caudal direction and after 2 cm it separates its terminal branches, the celiac artery is the main blood supplier to the forestomach. Furthermore, the collateral arteries present specific particularities due to the yet incomplete growth of young individuals that were taken into study
Parametrii fiziologici a unor specii pomicole pentru momentul introducerii acestora în spaţiu de depozitare –date parţiale
No full textDue to the high perishability of the fruits, new ways of decreasing the physiological processes rates during the storage period are tested. Depending on the pomological characteristics of the fruits, the water and soluble solids contentsare influenced by the respiratory intensityand transpiration rate. The aim of this study was to establish the values of the physiological parameters of organic fruits in view of subsequent correlations with the parameters determined during storage. The species chosen for this research were strawberries, blueberries, chokeberries, plums and apples. The respiration and transpiration rate are correlated with water content and soluble solids of the fruits. The differences obtained are explained by the different levels of maturation process and the fruit's large variability. The differences between the climacteric and non-climacteric fruits were pointed out in order to choose the best storage conditions for these
Barley residues allelopathic effects on corn seed germination and seedlings growth
No full textAllelopathy is the detrimental effect of one crop on germination or development of a plant of another species. A factorial layout within completely randomized design with four
replications was used to survey the influence of barley extract on corn seeds. Treatments included plant organs extract (leaf, stem, root and total), and different barley extract densities (Nosrat cultivar) includes four levels of 0%, 25%, 50% and 100%. The influence of barley extract was significant on coleoptile weight, radicle weight, radicle length and coleoptile length. Plant organs had meaningful effect on germination rate, germination percentage, coleoptile weight, radicle weight, radicle length and coleoptile length. Among all experimental characteristics, coleoptiles length was influenced by interaction between barley extract and plant organ. Although, the highest germination rate and germination percentage was related to 25% and 100% of barley extract density, the maximum
coleoptile weight, radicle weight, radicle length and coleoptiles length was related to control treatment (0%). Leaf extract has obtained the higher values of germination rate, germination percentage, coleoptile weight, radicle weight, radicle length and coleoptile length. Interaction between control treatment (0% plant extract) and stem extract had obtained the highest coleoptiles weight, radicle weight, radicle length and coleoptile length. Hence, from the obtained results, it can be concluded that the extracts of barley may have allelopathic influence on germination and seedling growth of corn
Consideraţii asupra calităţii lucrărilor de afânare adâncă a solului utilizând analiza statistică
No full textThe field surveys were conducted within the North-East development region on oderately inclined terrain. The primary data were obtained from the vertical sections of the ground made perpendicular to the forward direction of the soil tiller. The width of the cross-sections was 2 m and the depth of 1.2 m. The primary data obtained from the measurements of the vertical sections made were subsequently processed mathematically. In order to further verify the significance of the differences occurring within a plot, the use of mathematical methods for analyzing the area, volume and shape of the tiled surface has been attempted, which will allow the researcher a larger number of checks under optimal conditionsusing the mathematical statistical apparatus. Key words:deep soil loosening works, soil, statistical analysi
An agroecological approach for Danube Delta Biosphere Reserve: structure of edaphic mesofauna community in agricultural crops and the surroundings natural ecosystems
No full textAs part of a larger research developed within the Core Program and dedicated to the natural and anthropogenic ecosystems of the Danube Delta Biosphere Reserve, this study aims to investigate the edaphic mesofauna in several agricultural ecosystems and in the meadows of their vicinity. In both natural and anthropogenic ecosystems, edaphic
mesofauna in interrelation with soil microorganisms actively participates in the processes of degradation of vegetal necromass. The comparative analysis of edaphic microarthropod communities indicates that agroecosystems do not provide favorable conditions for their development, with the densities being the smallest, while higher values have been noted in meadows, especially in non-grazed ones. In both agroecosystems and meadows, the mites dominate the rest of the microarthropods. Among the mites, the predominance of thrombidiforms is observed both in meadows (42% and 54% respectively) and in most agricultural crops (38-89%). In non-grazed meadows and in some agricultural crops, oribatids are predominant (39% - 66%). Among thrombidiforms, tydeid - mites with a diversified trophic regime - are common to crops and meadows. They were found in most of the samples from investigated agroecosystems and also in
meadows, but with great representation only in the last category. The ratio of the main detritomicrofitophagous groups (oribatids / collembolans), a good bioindicator of the quality and humification stage of an organic substrate, was superior in most of the examined plots being subunit in only 23% of cultures and in a pasture. On the basis of all these findings it can be appreciated that humification is predominant, and the nutrient cycle is slower in almost all the considered plots. The study also reveals that the influence of agroecosystems on neighboring natural ecosystems at the level of edaphic mesofauna communities has not been confirmed
Evaluation of Aroma Compounds in the Process of Wine Ageing with Oak Chips
No full textMany modern alcoholic beverages are subjected to ageing processes during which
compounds extracted from wood contribute decisively to the overall beverage character. Wines
represent a perfect example of beverage in which ageing is a crucial technological manufacturing
step. During winemaking, producers accelerate chemical changes in wine composition by traditional
and alternative methods, such as the use of oak wood barrels and/or oak wood chips. Our research
aimed to investigate the overall volatile composition and sensory quality of red wines aged for two
timeframes, namely, 1.5 and 3 months, and with two technological variants, i.e., American and French
oak wood chips. Red grapes from the Feteasca neagra (Vitis vinifera) variety were harvested from a
vineyard in the North-East region of Romania. Stir bar sorptive extraction and gas chromatography
coupled with mass spectrometry (SBSE–GC–MS) was used to extract minor aromas present in wine
samples. The results showed clear di erences between wines treated with American and French
oak chips. Furthermore, ageing for 3 months increased the concentration of cis-whiskey lactone and
guaiacol in American oak-treated wine samples. For wines aged with French oak chips, we observed
higher concentrations of furfural, 5-methylfurfural, 4-vinylguaiacol, and trans-whiskey lactone. The
increased presence of chemical compounds in wine aged with French oak chips generated prominent
smoky, licorice, and toasty aromas, whereas in wines aged with American oak chips, notes of vanilla,
toasty, and cacao aromas were noticed. Moreover, red wines aged with American and French oak chips
were discriminated by chemometric analysis, which confirmed the evolution of aroma compounds
Effect of storage containers and lengths of storage on the germination, moisture content and pest infestation of wheat seed
Get PDFA laboratory experiment was conducted at the Department of Agronomy, Hajee Mohammad Danesh Science and Technology University, Dianjpur-5200, Bangladesh to evaluate the storage containers and duration of seed storage on the germinability and health of wheat seeds. The experiment was carried out in two factors, viz. three storage containers naming i) sealed tin container, ii) plastic container, iii) gunny bag, and four storage periods of i) 15 days, ii) 30 days, iii) 45 days, and iv) 60 days. Completely randomized design (CRD) was used in this experiment with eight replications. The results revealed that the germination percentages (GP) of the seeds stored in the gunny bag decreased quickly from 66.1 to 32.8% due to contained with high moisture content in seed. But, slowly decreasing trends of GP from 80.4% to 69.2% was observed in the sealed tin container seeds with lesser moisture content than that of gunny bag and plastic container. The reduction of GP was so higher of 50.38% in the seeds contained in gunny bag than that of only 13.93% in the seeds contained sealed tin container. Wheat seeds stored in sealed tin container, plastic container and gunny bag significantly increased moisture content in ambient condition for 60 DAS. The moisture content of the seeds stored in gunny bag was found to rise remarkably more than other containers. This escalation of seed moisture content was closely related to the surrounding environmental conditions, like tempera-ture and relative humidity where seeds were stored. The rate seed deterioration in gunny bag and plastic container paralleled the level of invasion by storage insect was found. During storage period, insect infected the seeds, and the insect bitten seeds were also found higher in gunny bag and plastic container, but lower in sealed container. Wheat seeds should be stored in air tight sealed container and drying should be done after some days of storage (45-60 DAS)
Effect of bio fertilizers and inorganic fertilizers on growth, productivity and quality of bread wheat cultivars
No full textIntegrated nutrient management
strategies involving chemical and
biological fertilizer is a real challenge to
stop using the high rates of agrochemicals
and to enhance sustainability of crop
production. In order to study the effects of
biofertilizers (Cerialin and Nitrobein) and
chemical nitrogen levels (0, 85,170 and
250 kg N ha-1) on yield and yield attributes
of two wheat cultivars (Sakha 94
and Gemmeiza 10), an agricultural
experiment in the form of strip-split
factorial design with three replications
was conducted in Kafr El-Sheikh region,
Egypt, in 2014/2015 and 2015/2016
growing seasons. The objective of this
study was evaluation of the effects of
these fertilizers separately and in
integrated forms, and setting out the best
fertilizer mixture. The results showed that
treatment with biofertilizers and chemical
nitrogen increased the growth, yield
attributes, biological and grain yield. Both
grain and biological yield produced a
better result during the combination of
nitrogen fertilizer and biofertilizers than
using either method alone. Using biofertilizers
increased biological yield through
increase in number of grains spike-1,
number of spikes m-2 and 1000 grain
weight, which cause to increase in grain
yield with significant changes in harvest
index, as well as protein content. We may
conclude that using biofertilizers (Cerialin
or Nitrobein) and chemical nitrogen
fertilizer (170 or 250 kg N ha-1) together
had the maximum impact on yield. Then,
we can decrease use of chemical
fertilizers through using biofertilizers
Comparative haematological investigations in two bird species from the order Psittaciformes: Psittacula krameri and Melopsittacus undulatus
No full textThe knowledge of the hematological parameters itʼs one of the most important indicators of the health evaluation. The aim of these studies was to investigate the main hematological values, including the morphology and the morphometry of the blood cells, in a comparative way of two bird species belonging to the order Psittaciformes: Psittacula krameri and Melopsittacus undulatus. Five adult birds from each species were analyzed, the blood samples being taken from the jugular vein on EDTA containers. In Psittacula krameri the values obtained were: RBC = 2.98x106/μl (±0.16); Hb = 14.46 g/dl (±0.76); HCT = 43.4% (±3.21); MCV = 145.62 fl (±2.95); MCH = 48.58 pg (±1.23); MCHC = 33.36 g/dl (±1.33); thrombocytes =
116x103/μl (±25,84); leucocytes: WBC = 14.46x103/μl (±1.21), heterophils = 52.74% (±4.04), eosinophils =
0.48% (±0.44), basophils = 1.28% (±1.7), monocytes = 6.18% (±1.47) and lymphocytes = 39.32% (±3.79). In Melopsittacus undulatus the following values were obtained: RBC = 4.04x106/μl (±0.15); Hb = 15.26 g/dl (±0.86); HCT = 54.2% (±5.12); MCV = 134.08 fl (±7.98); MCH = 37.81 pg (±1.14); MCHC = 28.26 g/dl
(±1.39); thrombocytes = 86.2x103/μl (±6.98); leucocytes: WBC = 21.42x103/μl (±1.85), heterophils = 39.4%
(±3.93), eosinophils = 0.28% (±0.33), basophils = 4.22% (±1.36), monocytes = 8.82% (±1.32l) and lymphocytes = 47.28% (±3.89). H/L ratio was higher in parrots. Average morphometric values of the blood cells in showed significant differences for monocytes which are larger in Psittacula krameri (p≤0.001), less differences for the heterophils, lymphocytes and platelets which are also larger in Psittacula krameri (p≤0.01) and very reduced differences for erythrocytes (except the nucleus width), eosinophils and basophils (p≤0.01). The researches concluded that there are differences regarding the most of the parameters, even if they are related species, including the morphometric values
Biodiversity of micoflora and harmful fauna in apple orchards from UASVM Bucharest
No full textIn Romania the knowledge of the main diseases and pests that occur during the apple vegetation period is a priority in the cultivation technology of this fruit tree species. The proposed studies aim at collecting information on the control of diseases and the microlepidopter population in order to establish the phytosanitary status of apple plantation. The research was carried out in the USAMV - Bucharest didactic field, in the apple orchard, and all apple varieties were studied, where the degree of attack was calculated based on the frequency and intensity of the diseases. The distinctive
Golden Orange variety was the most attacked, with the Podosphaera leucotricha shoots at 70% and the intensity of 85%. This variety has the same high sensitivity to Venturia inaequalis, namely 80% frequency and 65% intensity. Microlepidopter surveillance in the apple orchard was performed using the pheromone trap (AtraPom). Pheromone
traps were placed in the tree crown from late April to June. They were placed on three diagonals and 1.5 m high. Weekly observations highlighted that the first catches were recorded at the beginning of May (3 adults / trap), with a maximum flight in the in the second decade of May (7 adults/trap) and the last catches were in the second decade of
May (2 adults/trap), with a single flight corresponding to the first generation