| Popis: |
This diploma thesis, which is based on the feeding experiment, deals with the influence of nutritional deficiency in broiler chickens nutrition on parameters of biochemical blood profile and subsequent determination of the dynamics of changes of specified blood parameters depending on the age of broiler chickens. The aim was to verify whether reducing nutrient concentration in the feed mixture has affected the biochemical blood profile and whether the biochemical parameters observed could be used as indicators of metabolic disorders arising from mistakes in chicken nutrition. For the experiment were used the hybrid broiler chickens Ross 308, which were divided into groups. Chickens of the control group were fed a standard granular feed mixture of BR2 and subsequently BR3 during the experiment. Chickens of the experimental group I were fed with a standard mixture of BR2 that was mixed with wheat (in ratio approximately 1:1) and mashed. In the second third of the experiment, was created experimental group II (a part of the chickens of the original test group I), where chickens were fed the same as the control group. The statistically significant difference (P ≤ 0.05) was among all groups in the assessment of weight of broiler chickens for the whole of the fattening depending on the age of chickens. Within the biochemical blood profile, resp. the evaluation of enzymes, macro elements, indicators of nitrogen and energy metabolism, some differences between groups were also statistically significant. However, the results of the experiment show that the determined biochemical parameters are not sensitive indicators of nutritional deficiency. Much more sensitive indicator of induced experimental nutrient deficiency was changes in live weight ofchickens and feed conversion ratio. The evaluation of the dynamics of changes inmonitored parameters depending on the age have been identified significant changes in some values. Increase in ALT = alanine aminotransferase, GGT = gama-glutamyltransferase, LD = lactate dehydrogenase, sodium, potassium, chloride, magnesium and total protein. Conversely, a significant decrease was found in ALP = alkaline phosphatase, uric acid and urea. Based on the experiment, we can say that biochemical blood profile is not sensitive indicator of the nutritional deficiency of broiler chickens. It is important to mention the effect of the age on the results because the number of parameters significantly changed during fattening. |
