Musilova L.,Ustav agrochemie |
Losak T.,Ustav agrochemie |
Hlusek J.,Ustav agrochemie |
Vitezova M.,Ustav agrochemie |
And 5 more authors.
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2012
In two-year small-plot field experiments in Žabčice u Brna we explored the effect of nitrogen fertilisation with urea and urea with urease inhibitor (Urea + UI) on the content of macronutrients (N, P, K, Ca, Mg) in tubers and tops of potatoes of the variety Karin. The experiment involved 7 treatments. Nitrogen rates in treatments 1-7 were the following: 1) 90 kg N/ha - Urea; 2) 72 kg N/ha - Urea; 3) 54 kg N/ha - Urea; 4) 90 kg N/ha - Urea + UI; 5) 72 kg N/ha - Urea + UI; 6) 54 kg N/ha - Urea + UI; 7) unfertilised control. Each treatment was repeated 4 times. Both fertilisers (Urea, Urea + UI) were refl ected irregularly in the contents of N, P, K, Ca, Mg in the potato biomass and were based on the weather of the year, rate of fertiliser and analysed plant organ (tuber, top). In both years the contents of N, K, Ca and Mg were higher in the tops. The P content was balanced both in the tops and tubers. Some changes in the chemical composition were observed particularly in the case of nitrogen. In 2010 the nitrogen content was higher in tubers (1.44-1.65% N) after the application of both of the higher rates of urea + UI than after the application of urea alone (1.30-1.34% N). In 2011 the N content in tops decreased to 2.97-3.26% N when the highest rate of N was applied in both fertilisers, as against the other treatments (3.60-4.09% N). The contents of the other elements (P, K, Ca, Mg) were not significantly aff ected by the kind fertiliser and way of fertilising or the diff erences among treatments were minimal. In general we can conclude that er the application of both types of fertilisers the contents of the observed elements did not change fundamentally in the tops or tubers.
Zapletal D.,Ustav Vyzivy |
Suchy P.,Ustav Vyzivy |
Strakova E.,Ustav Vyzivy |
Vitula F.,University of Veterinary And Pharmaceutical Sciences Brno |
Kuchtik J.,Ustav Chovu A Slechteni Zvirat
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2011
The aim of this work was to investigate the behaviour patterns of a cage-housed breeding flock of pheasants during the day in the early stage of laying period, and evaluate the differences in behaviour patterns between male and female pheasants. Observations were carried out with a flock of common pheasants [Phasianus colchicus) consisting of 1 male and 5 female pheasants aged 2 years that showed a minimum rate of aggression in the previous laying. Behaviour patterns of birds were studied using a 15-minute video recording taken at each hour during the day (from 7 a.m. until 7 p.m.). The rates of activities such as feeding, movement, resting, scratching, preening, mating and aggression in female pheasants differed significantly from those in the male, as observed throughout the day. The rate of feeding had 2 peaks in hens (in early morning and late evening). Generally, the feed intake in females was observed throughout the day whereas the male received feed less frequently but at a higher rate, particularly in the afternoon. The highest rate of movement was observed for both male and female pheasants in morning hours followed by a decline in movement activities which was slow in hens and rapid in the cock, with the subsequent second peak before dark. Except for 7 a.m., resting was among behaviour patterns with the highest rate in both genders throughout day, with lower rates in females as compared to the male. The stereotype behaviour was observed in hens more frequently, with a peak in a period from 9 a.m. to 12 a.m. The highest frequency of mating was observed in the evening after 7 p.m.
Erbez M.,Ustav Chovu A Slechteni Zvirat |
Falta D.,Ustav Chovu A Slechteni Zvirat |
Chladek G.,Ustav Chovu A Slechteni Zvirat
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2010
The aim of this research was to estimate relations between temperature and humidity outside and inside of a permanently open sides barn for cows. This study was carried out in the period from February 1st, 2009 to January 31st, 2010 at a commercial dairy farm located in the South-Moravian region of the Czech Republic. During the study period temperature and humidity inside and outside the barn were systematically assessed. The research batch had 98 ± 3 cows. The barn had permanently open sides and during summer the main doors were mostly open. The cows in the research barn were of Czech Fleckvieh breed. The air temperature (°C) and humidity (%) were measured every fifteen minutes during the whole study period using 4 data loggers (HOBO technology; RH/Temp/), out of which were three (L1, L2 and L3), located inside the barn (Figure 1) and one (L0) outside the barn. The values of temperature-humidity index (THI) were calculated using the equation proposed by HAHN (1999). Mean daily outside and inside temperatures corresponded with each other, with outside temperatures always being lower than inside temperatures. The difference between the inside and outside temperature was lowest in March (0.01°C) and highest in October (3.48 °C). Mean values of humidity outside and inside also corresponded; however, they were sometimes higher outside and sometimes inside the barn. The smallest difference between the inside and outside humidity was recorded in August (0.18%) and the greatest in March (13.21%). Mean values of temperature-humidity index (THI) inside and outside the barn also corresponded, with outside values being in most cases lower than inside values. The difference between inside and outside THI values was lowest in December (0.07) and highest in October (5.96). The mutual relationships between the values recorded by individual loggers were very close (including the outside logger). Slightly weaker was the relationship between L2 and other, both outside and inside, loggers.