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Vliv technologie ustájení králíků na jatečnou hodnotu
Žáková, Ludmila
The aim of the diploma thesis was to evaluate the influence of rabbit housing technology on slaughter value. Two experimental groups of rabbits were compared. One group of rabbits was reared in outdoor rabbit hutches, and the other group was reared in a free housing regime. During the fattening period of both groups of rabbits, body length, ear length and weight were measured, all at two-week intervals. After slaughter, individual parts of the JUT were weighed, a sample was taken in the form of one pelvic limb and submitted for laboratory analysis within 24 hours after slaughter. After processing the results of the experiment, it was found that rabbits from the free housing method showed a better average daily gain. On the contrary, as regards the proportion of protein in rabbit meat, a higher value was achieved for rabbits in the pen housing system.
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Zhodnocení chovu plemene Wagyu v podmínkách konkrétního chovu v ČR
Hortová, Sára
The Bachelor thesis is devoted to a comprehensive evaluation of Wagyu meat breeding on Horky farm, as it is a very rare product in the Czech agriculture. In the first part of the thesis, I focus on the overall evaluation of the breeding using meat performance indicators, namely: carcass yield, average daily gain, JUT weight, pre-slaughter weight, weight differences among 120, 210 and 365 days and reproductive traits, which are processed using mathematical and statistical methods in the period 2016-2019. In the second part, I focus on the economic evaluation of the farm during the period 2019-2022, in which the SWOT analysis method was used, followed by an evaluation of the cost and revenue structure of the farm. Lastly, an analysis of ratio indicators, i.e. profitability, activity, indebtedness and liquidity, was made. The calculated values show that the farm is loss-making in 3 out of 4 years due to the high costs, long fattening period and lower reproduction.
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Zhodnocení růstu a základních ukazatelů jatečné hodnoty jehňat kříženců plemen romney marsh a clun forest
Minářová, Tereza
The aim of this thesis was to evaluate the growth and basic indicators of carcass value of romney marsh lambs (RM) and crossbreeds of romney marsh and clun forest (CF x RM). The study was carried out in 2019 on the family organic farm in Budeč. The first part of this work is a literature summary that represents problematics of growth and carcass value of lambs. It also deals with the possible effects of various factors on the parameters of growth ability and carcass value of lambs. The next section presents characteristics of the farm and monitored breeds of sheep. The growth was evaluated on the 25 male lambs sample. Live weight was measured at birth, at 70 days, at 100 days and at 130 days. Based on these live weights average daily gain at each interval was calculated. Further, the effect of genotype and interaction of genotype and litter size on live weight and daily gain were evaluated. The genotype had no significant effect on any of the live weights. In terms of average daily gain, the genotype had a significant effect only at some intervals of lamb´s life. Higher live weight at 100 days of age (28.2 kg) and higher daily gain from birth to 100 days (234.9 g) were found out in RM lambs. The effect of the interaction of genotype and litter size was found for most of the monitored live weights and average daily gains. In RM lambs, higher live weight at 100 days (32.0 kg) and higher daily gain in the interval from birth to 100 days (268.4 g) were found in singles. But in CF x RM lambs, these results were higher for twins. For control slaughter 10 male lambs were slaughtered of which 5 of them were RM and 5 of them were CF x RM. As part of the assessment basic indicators of carcass value and the influence of genotype on these indicators, the live weight before slaughter, carcass weight, weight of skin, weight of selected internal organs and right leg weight were determined. Meatiness and fatness were also subjectively evaluated. Slightly better results were found in CF x RM male lambs. In terms of the influence of genotype on carcass value and weight and proportion of viscera, none of the results of the control slaughter were statistically significant.
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Analysis of growth characteristics and carcass composition of selected hybrid combinations of pigs
KOMOSNÝ, Michal
Two hybrid combinations with an almost equal ratio of barrows and gilts (Large White Landrace) (Large White-sire line Pietrain) - experiment 1 and (Large White Landrace) Pietrain - experiment 2 were included to the monitoring (70 head). The rearing of piglets was going on in the experiment 1 from 25 to 60 days of age and in the experiment 2 from 28 to 63 days of age. Higher live weight and average daily gain were achieved in barrows of both hybrid combinations. A lower consumption of feed per 1 kg of gain was found in barrows. Feed consumption per 1 kg of gain was statistically significantly influenced by gender in the experiment 1. In the experiment 1, fattening was going on from 60 days of age and was evaluated up to 130 days of age. The first group was fed with an ad libitum diet (AD), the second group was fed with a moderate restricted diet (MR) and the third group was fed with a strong restricted diet (SD). AD barrows and gilts achieved the highest live weight and average daily gain. The lowest feed consumption per 1 kg of gain and the highest lean meat content were recorded in barrows and gilts of SR. In almost all traits, with the exception of lean meat content, greater differences between groups of feeding methods were recorded in barrows. Live weight and average daily gain were significantly influenced by the feeding methods. Feed consumption per 1 kg gain was significantly influenced by gender. Experiment 2 was going on from 63 days of age and is evaluated up to 133 days of age. The first group was fed with an ad libitum diet (AD), the second group was fed with a restricted diet from 85 kg live weight (R2) and the third group was fed with a restricted diet from 65 kg live weight (R3). Also in the experiment 2, the highest live weight and average daily gain were in AD barrows and gilts and the lowest in R65 groups. The differences between ad libitum or by restricted-fed pigs were not as significant as in the experiment 1. The lowest feed consumption per 1 kg of gain was in barrows R65 and gilts R85. Lean meat content was the highest in AD barrows and R65 gilts. Live weight and average daily gain were significantly influenced by the feeding method and gender. Feed consumption per 1 kg of gain was significantly influenced by the feeding method. The slaughter value traits were converted to an age of 148.9 days in the experiment 1. The highest slaughter weight was in AD barrows and gilts. The lowest average backfat thickness and with a related highest lean meat content (FOM) were in SR barrows and gilts. The highest pH45 was in barrows of both restricted groups and MR gilts. The lowest drip loss was in SR barrows and MR gilts. The highest IMF content was recorded in AD barrows and gilts. Backfat thickness and lean meat content (FOM) were significantly influenced by the feeding method. Lean meat content (FOM) in the AD group and MLLT area in the SR group were significantly influenced by gender. The slaughter value traits were converted to an age of 141.3 days in the experiment 2. The highest slaughter weight was in barrows and AD gilts. The lowest backfat thickness was in R85 barrows and R65 gilts. The highest lean meat content (FOM) was in the R85 groups for both sexes. The highest pH45 was in barrows AD and gilts R85. The lowest drip loss and the highest content of IMF was in barrows and gilts R65. The results of the experiment 1 for the hybrid combination (LW L) (LWSL Pn) showed that it is suitable to use ad libitum feeding for both gilts and barrows, depending on the technological and organizational possibilities of the breeder, to apply a stronger feeding restriction. In terms of costs per 1 kg of gain, it was shown in the experiment 2 for the hybrid ombination (LW L) Pn as the most suitable feed restriction from 85 kg of live weight, when the growth potential of pigs was best utilized with adequate feed conversion. Results of the trials showed excellent growth potential
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Analýza ukazatelů výkrmnosti jatečných prasat a jejich zatřídění do SEUROP systému
FRANCOVÁ, Magdaléna
The aim of the diploma thesis was to evaluate the production parameters at the particular pig farm. In 2020, the average initial weight at fattening was 29.1 kg and pigs were fattened up to an average final weight of 108.5 kg. The average daily gain was 886 g with feed conversion ratio of 2.86 kg and the mortality rate of 2.62%. In 2021, the average initial weight in fattening was 28.8 kg and the average final weight reached 112.0 kg. The average daily gain was 896 g, feed conversion was 2.86 kg and the mortality rate was 2.22%. In 2020, the average carcass weight was 86.0 kg and the lean meat content was 57.5%. In 2021, the average carcass weight was 88.7 kg and the lean meat content was 58.5%. In 2020, most carcasses were classified in class E (62.0% resp. 42.7%), the second most numerous class was class U (22.8% resp. 24.6%), followed by class S (12.4% resp. 29.4%) at the slaughterhouse I resp. II. The results in 2021 were similar. 65.3% resp. 60,8% of carcasses were included in class E, 18.4% resp. 10.7% in class U and 14.0% resp. 27.3% in class S at the slaughterhouse I resp. II.
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Vyhodnocení ukazatelů výkrmnosti v chovu prasat
ROHÁČEK, Daniel
The aim of this thesis was to evaluate fattening parameters and carcass value of pigs at a particular agriculture company. Parameters of fattening were monitored in terms of farms, i.e., farm N (84 fattening cycles) and farm M (93 fattening cycles) and in terms of year, i.e., the years 2018-2020. The initial live weight of pigs in the farm N was 24.8 kg, in the farm M was 23.0 kg (p < 0.05). The final live weight in the farm N was 115.2 kg. However, in the farm M the final live weight was higher, namely 117.3 kg (p < 0.05). The average daily gain in the farm N was 979 g, but in the farm M was 10 g lower. Feed mixture consumption per 1 kg of weight gain was almost identical in both farms. In the farm N the feed consumption was 2.34 kg and in the farm M was 2.33 kg. Feed mixture consumption per day in the farm N was 2.29 kg, in the farm M was 2.25 kg (p < 0.05). The mortality in the farm N was 1.57%. However, mortality in the farm M was higher, namely 1.99% (p < 0.05). Total of 2 498 carcasses from the farm N and 2 771 carcasses from the farm M were used for evaluation of the carcass value. Subsequently, the average carcass weight in the farm N was determined at 88.5 kg with 58,1% proportion of lean meat. The average carcass weight in the farm M was 93.2 kg with 57,7% proportion of lean meat (p < 0.05). Most of the carcasses from both farms were ranked in the grading class E (farm N - 71.0%, farm M - 71.7%). 17,7% of carcasses from the farm N and 14.2% carcasses from the farm M were classified in class S. Finally, most of the carcasses from the farm N were classified in the weight category 80-89.9 kg and in the case of the farm M the most carcasses were classified in the weight category 90-99.9 kg.
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Zhodnocení růstové schopnosti telat na vybrané rodinné farmě
Pokorná, Jana
The Bachelor thesis deals with the growth ability of calves at a chosen family farm and it is divided into two parts. In the theoretical part, significance of cattle bree-ding and meat yield indicators are defined, such as the fattening performance of fatted cattle and slaughter value. Furthermore, influences affecting meat yield are described including sex, breeding affiliation, stabling system, nutrition, feeding and other influen-ces. The second part of the work focuses on an experiment pursuing a chosen group of bulls that were given dairy as well as vegetable nutrition, weighted and observed, on the basis of which average daily growths are calculated. At the end of this study, it was found out that the farm achieves very favourable growths. When calves were given dai-ry nutrition, the growth reached 1.83 kg/day and when fattened intensively to gain higher slaughter weight, the growth was about 1.86 kg/day.
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Efektivita produkce vepřového masa
Bartáková, Leona
This thesis deals with the efficiency of pork production. Firtsly, the production characteristics of pigs are defined ie, fattening capacity and carcass value and also factors affecting them. Another part is devoted to the economy breeding of pig and development of pork production. The last part of the thesis analyzes the station in a particular pig breeding.
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