|
| |
|
| |
|
|
Analýza stěžejních vlivů působících na tržní produkci jatečných králíků
Zbořilová, Markéta
Diploma thesis The analysis of key influences on the market production of carcass rabbits dealt with the own experiment in the small breeding of rabbits. The experiment lasted for one calendar year. During the experiment, 34 litters were born and a total of 162 rabbits. The indicators of the impact on meat production were monitored. These aspects include number of cubs in litter, breeds and crossbreeding, average litter increment, average fattening weight at week 20, average carcass weight, and average yield. In the experiment were 75 % of litters slaughtered at week 20 of fattening. Furthermore, the influence of the season on the increment, weight in the 20th week of life and weight of carcass was observed. The best results in terms of average two-week increment reached litter no. 1 where Californian white rabbit and New Zealand white rabbit breeds were crossbred. The average increment of this litter was 375 grams. The average increment in the experiment was 323 grams. This litter also had the highest average weight in the 20th week of life, it was 3460 grams. The average weight of all litters in the 20th week of life was 2858 grams. With a carcass weight of 1900 g and 1800 g, rabbits from litter No.1 (yield 53 % abs and 52 % abs) had the highest carcass weight. The highest yields were achieved in litter no. 10 (pure New Zealand white rabbits) and 62 % abs. The number of cubs in litters varied from three to seven pieces, overall the number of cubs in this experiment was lower. The average in the experiment was 5 pieces per litter. In the experiment, 60 % of female rabbits and 40 % of male were born. In the experiment, no difference was found between the observed parameters in purebred vs. hybrid rabbits. Furthermore, the influence of the seasons on the monitored parameters was not proven; Economic analysis of breeding confirms the authors mentioned in the theoretical part of the thesis that small breeding with 150–200 pieces of bred rabbits per year is intended for hobby breeding. Breeding like this is profitable only in terms of direct costs. In the economic analysis it was found that number of cubs in litter has the largest share of profitability. Other parameters are negligible compared to litter frequency.
|
|
| |
|
|
Milk thistle (Silybum marianum) utilization in animal feeding
Klímová, Stefanie ; Lukešová, Daniela (advisor) ; Fernández Cusimamani, Eloy (referee)
Milk thistle (Silybum marianum (L.) Gaertn.) is a medicinal herb known for its hepatoprotective and antioxidant properties which not only have positive results in human medicine but also in veterinary medicine. Active substances of milk thistle are called silymarin complex and they are obtained by pressing the seeds of the plant. The bachelor thesis has a literature review of summarized findings of the use of substances contained from milk thistle in human medicine and further in animal nutrition. In the next section were selected case studies dealing with the influence of the addition of milk thistle to complete feed mixtures in laboratory animals. Milk thistle in experimental works was administered to rabbits as an antioxidant AV3 (0.2 ml.kg-1) and was followed by evaluation of metabolic parameters in comparison with the control group that was fed complete feed mixture without the addition of milk thistle. The investigated parameters were growth, biochemical and reproductive parameters and quality of rabbit meat. Addition of milk thistle did not affect the growth parameters, the quality of the flesh and blood biochemistry, compared to the control groups of animals, with the exception of the level of cholesterol, which increased by 38.6%. Reproduction parameters of milk thistle supplement increased the number of born and weaned kids and decreased offspring mortality compared to the control group. Milk thistle can therefore be used as a dietary supplement for improving reproductive parameters. Use of substance contents of milk thistle in human medicine has been evaluated in the survey from where 55 % of the 120 respondents use silymarin in tablets in the acute or chronic liver diseases for its hepatoprotective effect.
|
|
|
Vliv supranutričních dávek organické formy selenu na vybrané krevní parametry králíků
MIRANDOVÁ, Marie
Selenium is an important essential mikroelement, that acts through a number of selenoproteins. Both it´s lack, and it´s plenty has a negative influence on the organism. Recently is used Se during the various diseases treatment of people with supranutritive dosages of this element. The presented thesis deals with the supranutritive dosages influence of Selenium concentration organic form (Chlorella, enlarged alga with selenium) in blood serum and selected rabbits blood parameters (hemoglobin and hematocrit level, leukocytes and erythrocytes, urea concentration, triglycerides, gamma value glutamyltransfers and total concentration of plasmatical proteins). Nine week experiment was performed on 18 rabbits, which were divided in to three experimental groups. Group 1 (control group) has received the selenium at a dosage of 0.15 mg / kg dry matter of feed, group 2 at a dosage of 0.3 mg / kg dry matter feed and group 3 at a dosage of 4.3 mg / kg of dry matter feed. During the experiment weren´t registered any clinical symptoms associated with the possible Se toxicity. Supranutritive dosages in the group 3 led to faster and statistically significant increase of the selenium concentration in the blood serum. Parameters of the hemopoiesis, the growth and the substantial metabolism had no influnece with supranutritive dosages in the groups 2 and 3. The results has not confirmed the clear positive or negative effect of selenium supranutritive dosages on selected blood parameters. The results show, that after rabbits supplementation are suitable recommended dosages of 0.15 mg Se / kg dry matter feed.
|
|
|
Plemena králíků chovaná převážně v zájmových chovech
Juránková, Petra
In his thesis on the topic of breeding rabbits as pets, mostly I dealt with zoological classification of rabbits , their domestication , breeding history rabbits , breeding rabbits significance and current status of rabbits in the Czech Republic . I also focused on individual species , namely their origin and their standards. Breeds are categorized according to work Stencil rabbit breeds to large, medium, small , stunted , short, long and breeds with a special structure of hair.
|
|
|
Kvalita masa králíků a jejich jatečné zpracování
Suchomelová, Lenka
Rabbit meat has high nutritional value. It contains only a small amount of fat and cholesterol and is an important source of vitamins and minerals. Rabbit meat consumption continues to decline. This decrease is mainly due to the higher price of rabbit meat. Broiler rabbits that have a higher slaughter yield are most often used for meat production. Quality of rabbit meat is influenced by several factors. These factors include age, gender, nutrition, environment, breeding technology, genetics and the method of slaughter processing. Rabbit slaughter processing takes place in specialized processing plants. The rabbits are stunned, either mechanically, by electric shock or gas and then they are hung by the hind leg on a special hook. Bleeding, skinning and gutting follows after that. The body organs are removed and a veterinary inspection is performed. The carcasses are usually cooled down by air or air with spray. The chilled carcasses are weighted and packaged. They can also be applied to portions or used for production of meat products.
|
|
| |
|
| |
guest ::
