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Vliv struktury krmných směsí na parametry metabolismu pomalu rostoucích kuřat
Čumplík, Lukáš
This diploma thesis deals with the influence of the structure of feed mixtures on the metabolism parameters of slow-growing broilers. The issue of this topic was documented in the literature review. In the experimental part, an experiment was described regarding the determination of the influence of the structure of feed mixtures on nitrogen retention, ileal digestibility, parameters of organs of the digestive tract, histomorphometric parameters and the structure of feces. For research purposes, 120 slow-growing Hubbard JA 57 broilers were fattened for 49 days. During the fattening period, all broilers were fed feed mixtures identical in terms of nutrients, they differed only in the structure of the feed. 3 different textures were created - fine, medium and coarse. The feed mixtures were sieved through a system of sieves to determine the proportion of particle sizes. The influence of the structure of the feed mixtures on nitrogen retention was statistically significant difference (P<0.05) in the BR3 feed mixture, when it was shown that coarse particles have a positive effect on nitrogen retention. The results were not statistically significant for the BR2 feed mixture (P>0.05). When investigating the influence of the structure of the feed mixtures on the parameters of the organs of the digestive tract, a statistically significant difference (P<0.05) was found in the height of the muscle of the gizzard. For the other investigated parameters, the results were not statistically significant (P>0.05). Regarding the histomorphometric measurement, a statistically significant difference (P<0.05) was observed between the coarse feed mixture and the ratio of the length of the villi and the depth of the crypts in the duodenum and the depth of the crypts in the ileum. At the same time, it was evaluated as a statistically significant difference (P<0.05) between the structure of the feed and the structure of the droppings.
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Využití netradičních krmiv ve výživě brojlerových kuřat
Mánková, Lucie
The aim of the study was to determine effect of milk thistle seed cakes in feed mixture for Ross 308 cockerels. The effects to body weight gain, feed conversion, carcass yield, nitrogen retention and biochemical parameters of blood were evaluated. The experimental group (MT40) contained 40% milk thistle seed cakes. It was compared to control group without milk thistle seed cakes. Lower weight gains and higher feed conversion were observed in group MT40 in comparison with the control group. Lower weight gains were probably connected with lower nitrogen retention in MT40 group. On the other hand, the analysis of some blood parameters in MT40 group was favourable, because of stabilization some values. Activity of hepatic enzymes - AST (alanineaminotransferase), ALP (alkaline phosphase) and LD (lactatedehydrogenase) were related to improvement of liver profile and lower damages of other organs like as skeletal muscle.
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Zařazení barevné pšenice do krmné dávky brojlerů
Zahradníčková, Marie
The aim ofthis study was todetermine effect ofpurple wheatKoniniwith a higher contentof anthocyanins(14.01mg /g) in grainincluded infeed ratiofor fattening male broilers of hybridcombinationsCobb 500. The effectonfeed consumption, weight gain and carcass yield were evaluated. The content of purple wheat Konini in experimentaldiet was78%, 0%, 50%, 26% and 52% which was compared to control wheat, whose content was also 78%, 0%, 50%, 26% and 52%. Nitrogen compounds in the control wheat were topping using gluten. The highest feed consumption and the highest average weight gains were a group of 5 that contained the color of wheat Konini 2/3 and 1/3 controls wheat. 100% wheat feeding horsemeat statistics had no significant effect on weight gain, feed consumption or carcass yield.
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Použití bylinných extraktů v krmné dávce brojlerových kuřat
Šťastník, Ondřej
This thesis is concerned with detecting the effect of the addition of garlic extract to the diet Ross 308 cockerels on blood antioxidant activity expressed by FR method and ni-trogen retention. It focuses the effect of garlic extract on body weight gain, feed con-sumption, feed conversion and carcass yield. Statistically significant (P <0.05) the highest antioxidant activity levels were achieved in the control group as measured by FR method. Statistically significant (P <0.05) effect on nitrogen retention was found in the control group compared to groups containing 10 and 15 g of garlic extract per kilogram of feed mixture . Feeding garlic extract had no statistically significant effect on body weight gain, feed consumption, feed conversion and carcass yield.
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