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Stravitelnost živin z praktické krmné dávky pro koně
Pressová, Petra
The aim of the study was to determinate digestibility of nutrients from diets for horses. The experiment was conducted on 9 Czech Warmblood horse breed on University school farm at Žabčice. For selected horses we found weight, age and workload. Horses were divided into 3 groups and in three balance periods were have gradually fed them the same amount of feed mixtures and meadow hay. Altogether an attempt fed 3 compound feed (mixtures), in which we analyzed components that were used in the experiment. Feed mixtures consisting from barley, oats, flaxseed meal, bean, dried whey, soybean meal, mineral premix and meadow hay. Diets mutually differed amounts of soybean meal. The experiment was arranged factor - so that no group of horses did not receive the same mixtures of 2x. The results were found to amount spent nutrients and calculated their digestibility. Digestibility of dry matter was 74.07 %+-4,45, crude fat 30.95 %+-23,62, energy 74.57 %+-3,89, nitrogen-free substances 79.79 %+-4,12, crude ash 66.31 %+-14,89, crude protein 80.17 %+-4,59 and crude fiber 69.91 %+-6,64. Digestibility of calcium, we estimated at 75.08 %+-8,35 and phosphorus 51.65 %+-15,93. Due fed mixture resulting difference in digestibility of crude protein at 1.02 % and the group fed mixtures, soybean meal and the group fed mixtures with the highest content of soybean meal (S10). The digestibility coefficients are most affected by the individual characteristics of horses and will need to make further balance for us to objectively determine the digestibility of crude protein in rations.
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