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Možnosti využití krmných aditiv ve výkrmu býků
VALTOŠOVÁ, Gabriela
This bachelor thesis deals with the use of additives in fattening bulls. The theoretical part begins with a brief description of the physiology of the ruminant difestion and the main breeds of beef cattle used for fattening. The following is a general description of the additives, their groups and the purpose for which they are used. Chosen additives are described in more detail, especially their effect on overal he-alth, average daily gains or meat quality of slaughtered animals. The practical part were replaces by the recommendations for practise and the comparison of the real feed ration, which is applied in the farm focused on fattening bulls and its theoretical modified verison leading to higher efficiency using additives.
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Vliv plemenné příslušnosti na masnou užitkovost býků v konkrétním podniku
Pavlíček, Václav
ABSTRAKT In this work I compared daily gain of intensive fattening beef meat bulls in a chosen farm. I was interested in: incoming weiht, average daily gain and weight during the fattening. Theoretical part points ohter aspects which influence fattening. I studied 3 groups a total of 81 bulls. Mainly these breeds were monitored Charolais, Simmental and Limousine hybrids. Charolais bulls had the highest daily gain which is 2,25 kg/day. The highest slaughter weight was the bull of Simmental. Keywords: daily gain, beef meat, fattening bulls, live weight, purebred breed, hybrid
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Analýza průběhu výkrmu býků českého strakatého plemene
BALDÍK, Rudolf
Czech mottled cattle is the original breed of cattle in the Czech Republic. It is part of a worldwide population of mottled breeds of the same phylogenetic origin, widespread, for all its continents, for its excellent properties and widespread use. It currently accounts for about one half of the total cattle population in the Czech Republic. The aim of the work was to monitor the growth of fattened bulls, focusing on the last half year of fattening and trying to determine the inflection point of fattening this breed under given breeding conditions. Furthermore, the monitored bulls were compared on the basis of genetic potential, ie the representation of the blood of the Czech spotted breed and according to the father. Fattening bulls are only from their own breeding as weaners from milked herds. The bulls are fattened up to the age of 24 months and are divided into groups of about 24pcs, depending on the weight. The feed is given to them twice a day, at regular intervals, with a mixing feed wagon with weight. The feed consists of corn silage, clover-grass silage and a core mixture, which the company produces itself. The results obtained did not show a statistically significant difference in the pre-slaughter live weight by father line, by month of birth of the individuals studied or by age at slaughter. Only by comparing the live weight before slaughter by SEUROP, there was a statistically significant difference.
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Zhodnocení výkrmu býků na vybrané farmě
BALDÍK, Rudolf
The main concern of farmers cow suckler is production of quality beef, maintaining the natural landscape and cultural condition and rural development. The aim of the study was to compare in terms of the economic outcome of two periods of one year, when the first period breeder bulls was producing a year-round silage and hay, and in the second period during the season he fed green fodder. Young bulls are fattened his own breeding and the rest is bought as weanlings at the age of 6-8 months. The bulls are fattened until the age of about 24 months. The Bulls were divided into 2 groups: the first group of bulls (the year of slaughter 2012), which was fed clover silage, hay with the addition of a second core group of bulls (the year of slaughter 2014), which was reared as a group in 2012, but the summer is replaced by fresh clover silage, clover-grass. The results from both groups fattened bulls show that bulls are fattened summer fresh clover forage, they have better gains and achieve higher slaughter weight than bulls fattened only clover silage, at the same time fattening. The advantage of this method of feeding is economical savings on feeding day.
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Výkrm býků pastevním způsobem v ekologickém zemědělství
OULICKÝ, Radovan
The aim of the bachelor thesis was the analysis of meat performance of the herd of fattened bulls containing the majority of the Aberdeen Angus RED form. The fattening took place at 850-950 m a.s.l. in the organic farming regime. The set of bulls consisted of 23 bulls kept on the private farm. From the group of fattened bulls data about feeding quality and carcass values were obtained. The average live weight of weaned calves was 297 kg with the average age of seven months. The average slaughter weight of slaughter animals was 634 kg and the average carcass weight was 349 kg and the average carcass yield was 54 %. Significant differences were found within gains between the winter season and the grazing period when in the first winter period after weaning the daily gain was 0.36 kg per day and in the first grazing period was 0.66 kg per day. During the second winter period bulls reached the average gain of 0.45 kg per day and during the second grazing period of 0.64 kg per day.
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Influence of selected factors on the fattening capacity and carcass values of bulls in the control station Želeč
PUFR, Josef
Cattle breeding is one of the part of traditional Czech agriculture. It is a vital part of economy consisting of two main branches - milk and beef production. Beef is one of the main products of cattle breeding sometimes provided by fattening of heifers, cows and bulls. Producing meat with the highest quality with low costs is the main goal of fattening the cattles. I have tested the influence of selected fators on the fattening capacity and carcass values of Czech Fleckvieh bulls in the control station as well as the economic requirements of the fattening period. I have compared the test period of 530 ? 10 days with period of 610 ? 10 days of fattening using the old and new technology of supplementation. Further fattening was provided by results of growing Charolais, Limousin and Czech Fleckvies x Simmental bulls. The results suggest that the increase of the period of fattening for 80 days had a positive effect on carcass yield (p < 0.001), assigning in the classification according to SEUROP and profitability of farming. The positiv relationships between breeding value of fathers and carcass yield of their sons was observed. Finally, the positive influence of new technology of fattening on the classification acording to SEUROP was shown.
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Ethological manifestation of bulls during fattening
ŽÁČEK, Pavel
The object of graduation theses was catch up the basic category of bull´s behaviour (food taking, resting, standing, movement). The bulls are stabled in free full grating system and they are here from start until the end of fattening with regard to racial differences among them. Average time of taking feed during whole fattening was 4.68 hours (19.4 %). Average time of caregory´s movement durinng whole fattening was 1.30 hours (5.4 %). Average time of resting was 13.41 hours (56.0 %). Average time of standing was 4.62 hours (19.2 %).
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