Publications by authors named "T K Kopec"
The aim of this experiment was to find out whether the taurine supplementation in daily ration had an effect on quantity or quality of Duroc boar ejaculate. The experiment duration was from June to August, when it could assumed the possible occurrence of heat stress. For the study was chosen 12 Duroc boars of approximately the same age and condition.
View Article and Find Full Text PDFThe aim of the research was to assess how age, sex, sire, country of foaling, country of training and race distance influenced the international racing and performance of Thoroughbreds. The research was based on performance ratings of 6216 horses assigned by the International Federation of Racing Authorities between 2004 and 2022. The most common sex was stallion (58.
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- The optical chain and logger (OptiCAL) is an autonomous observatory that measures light variations beneath ice using multiple sensors.
- Results from long-term Arctic Ocean deployments show that OptiCAL effectively captures a wide range of under-ice light levels between July and November.
- The instrument reveals transient light features at certain depths linked to nearby ice leads, highlighting the need for precise depth-resolved light measurements.
The aim of this study was to estimate the inbreeding coefficient in the Zwartbles sheep population in the Czech Republic, as well as to investigate the effect of inbreeding on meat yield indicators. The analysis used data on the entire population since 1997, with the original database containing 13 150 animals. In this population, the average inbreeding coefficient is 3.
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- Selenium plays a significant role in boar fertility, with research having evolved from its bioavailability to include nanotechnology in supplementation studies.
- An experiment with 21 Duroc boars divided into three groups tested the effects of inorganic selenium and selenium nanoparticles on semen antioxidant parameters over 126 days.
- While both forms of selenium improved certain antioxidant measures, selenium nanoparticle supplementation did not enhance sperm quality, suggesting it could be a safe alternative to inorganic selenium while boosting antioxidant properties in boar semen.