The current study aims to examine the influence of the environmental temperature and humidity regime during winter on some adaptive reactions in the organism of five-month-old calves of the Bulgarian Black and White breed, kept in O.K. and in cattle-shed in Bulgaria. The temperature and the relative humidity of the production environment have been studied for a period of three months. The changes in the length, weight, density and percent ratio of the coat, transitional and prickly hairs and the changes in the hemoglobin (HBB), haematocrit (PCV), the inorganic phosphorus (P) and the number of erythrocytes (Er) were examined. The hair and blood tests were taken once at the end of the winter when the calves were five months old. 30 animals divided in two groups of 15 were studied. After the results were analyzed it became clear that the abiotic factors - low temperature and increased humidity of the environment - are main preconditions for the increase of the coat hairs from 11.8 % of the calves kept in the hutch to 26.2 % of the calves kept in O.K.. their length (from 24.395 mm to 29.941 mm), density (from 3567.3 n 4cm2 to 5423.8 n/4cm2) and weight (from 7.629 mg/cm2 to 15.466 mg/cm2). The level of hemoglobin HBB (from 5.23 mmol/1 to 5.48 mmol/1), haematocrit PCV (from 0.33 1/1 to 0.351/1) and the number of erythrocytes Er (from 8.6x10l2/l to 8.8x 10l2/l) raised, while the level of inorganic phosphorus P fell (from 4.92 mmol/1 to 4.71 mmol/1).
The aim of current work was a part of study for animal husbandry effects on
emissions of greenhouse gases and some mitigation strategies between the end
of XX and the beginning of XXI century. It?s emphasized on nitrogen (N)
balance and its fluctuated values, as well as brings forward attendant
factors. As a result, we deducted strong correlation models (R2> 0.89, 0.85,
0.99), as an estimator of the N2O emissions (Gg.CO2-eq), generated by manure
management in relation to animal population (monogastric, ruminant, total)
among the investigated middle-term periods throughout 1989 - 2011 y for the
Bulgarian realities.
Influence is investigated of the main components of the newly developed assortments of phytojems -fruit part, vegetable ingredients, fertilizers, sweeteners and organic acids on the sensory evaluation. The main tasks in the development of the phytojams are to preserve the consistencе upon addition of pectin; increasing the nutritional value of the main raw material by introducing dry and thickened plant extracts and lowering the energy value of new assortment products at the expense of reducing the amount of sugars in the recipes or replacing them with fructose. By physicochemical parameters the studied variants differ from the traditionally produced low-caloric jams with the higher content of phenolic compounds. Sensory evaluation was conducted at the ten ball system. Five model variants have been evaluated with a total sugar content of less than 10%. They have better organoleptic qualities, appearance and functionality.
Were studied chemical composition, total content of anthocyanins pigments and aminoacid composition in forest fruits S. ebulus L., Vaccinium myrtillus L., Rubus caesius L., Ribes nigrum, Vaccinium vitis idaea L. and Grataegus monogyna for the purpose of using them as a raw material for the production of functional beverages. In the course of the work, it has been established that the berries are a valuable raw material for obtaining functional beverages. They are the source of many biologically active substances such as vitamins, polyphenol compounds, pigment and pectin substances, amino acids and macroelements.
The last few years have shown a tendency for an increase in the production of knitting fabrics made of yarns containing elastomeric threads. A main point of the construction of such garments is the determination of their deformation properties, which change depending on the type of the knit and the composition of the yarn. Determining these properties requires textile testing which takes time and requires additional expenditures which necessitates the development of new methods for their evaluation. The aim of this work is to examine the relation between the distortion features of elastic knit fabrics and the percentage of elastomeric threads in the yarn. The subject of the study is a group of knit fabrics with the Punto di Roma stitch structure containing elastomeric threads from 2% to 6%. Based on the proven statistical significance of the correlation coefficients, a regression analysis was performed. A mathematical model of the studied dependence is presented, regression equations are derived. The analysis of the model proved that it works. The results obtained from the study aim to optimize a method for constructing a garment from a knitted fabric containing elastomeric threads.
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