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Hodnocení výkrmu kuřat s využitím nášlapných vah
Bendeová, Tereza
The aim of the diploma thesis was to evaluate the data gained from a weighine-machine located right in the hall of the selected company. The weighine-machine together with thermometer and hygrometer measures the weight of chickens, numbers of chickens weighed, temperature, humidity and uniformity. The data acquired about the given batches are from September 2014 to March 2016 from both types of hybrids. The results show that hybrid ROSS 308 occurred more often above the growth curve, in summer months it had better daily weight gain and the highest uniformity. Hybrid COBB 500 had better increase in winter and its uniformity was higher in temporary and winter period. According to the correlation analysis, the fact was confirmed, that with the growing weight the number of chickens lowers. The average mortality was around 3 %, the exception was the batch 6/2015 when the mortality was 4,8 %.
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Produkce a zpracování drůbeže v české republice
SIAWELA, Saviour
The absolute and most fundamental aim of this bachelor's thesis is to compare and understand the production and processing measures of broiler parent combination and their offspring for the desirable breeding type for commercial breeders of broiler chickens COBB 500 and ROSS 308 in that order. The data was obtained from Mezinárodní testování drůbeže, státní podnik (International poultry testing, state enterprise) in Ústrašice. Parent testing of COBB 500 and ROSS 308 consisted of parent rearing periods of up to 154 days of age respectively. The fattening test was made in two sets of 35 days and 42 days in that order. Testing evidence results suggested that ROSS 308 chickens obtained a quite substantial live body mass/weight compared to COBB 500 on due ending course of the set rearing period in parent testing. However, lower feed consumption per head/day was realized in COBB 500 hybrids with reference to this period respectively. In addition to that, lower feed consumption was observed per day/head in COBB 500 hybrids during the laying period. Despite the deduced observations though, a higher egg number/hen housed was laid by ROSS 308 hens but the live hatched chickens per laying hen were higher in COBB 500 hens. Higher live body mass/weight and lower feed consumption per kg gain hybrids were realized in ROSS 308 at the fattening test period of 35 days of age. On the other hand, roosters of both hybrid combinations COBB 500 and ROSS 308 gained a higher live body mass/weight and lower feed consumption per kg gain. 2.3 % of chickens died during the fattening period in each hybrid combination. Higher carcass yield, breast, and thighs muscle mass were in this work determined in ROSS 308 hybrids. This is because ROSS 308 hybrids successfully attained a higher live body/weight of at least about 14 g during a prolonged fattening testing period of 42 days of age. Higher live body mass/weight however and lower feed consumption was determined in cocks obviously in comparison with hens in both genotypes. In that order,4.6 % of COBB 500 chickens and 5.4 % of ROSS 308 chickens died during the fattening period due to improper ventilation yet a very imperative factor to animal welfare at large. genotypic difference between COBB 500 and ROSS 308 was at 0.2 % in slaughter yield, 7 g in breast mass, and 9 g in thighs weight respectively.
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Analýza ukazatelů výkrmnosti u kuřecích hybridů
ČEDÍKOVÁ, Kristýna
The aim of this thesis was to analyse fattening parameters in chicken hybrids at a particular farm. 256 batches (7 836 986 chickens) were included into the study. 56 batches were carried out in years 2016 and 2018. Remaining 48 batches were carried out in years 2017, 2019 and 2020. The Ross hybrid 308 was fattened during all the mentioned years. However, the Cobb 500 hybrid was fattened only in years 2016 (13%), 2018 (25%) and 2019 (29%). Both hybrids showed nearly the same feeding length (Cobb 500 hybrid 0.28 days shorter), live weight (Cobb 500 hybrid 0.03 kg higher) and feed conversion ratio per kg of weight gain (Cobb 500 hybrid 0.02 kg lower). The Cobb 500 hybrid showed 0.52% higher mortality (p < 0.05) and 14.6 points higher efficiency feeding index (EFI), (p < 0.05). The shortest feeding length was in year 2017 (33.15 days) and the longest in year 2016 (p < 0.05). The live weight showed an upward trend from year 2016 (1.98 kg) to 2018 (2.19 kg). However, in years 2019 and 2020 the live weight stagnated on the value of 2.18 kg. The lowest feed mixture consumption per 1 kg of weight gain was in year 2019 (1.47 kg), and the highest in year 2016 (1.61 kg; p < 0.05). The lowest mortality was recorded in 2017 (2,90%) contrary to year 2018 (3,64%). The difference was 0,74% (p < 0.05). The efficiency feeding index (EFI) was growing between years 2016 (353.3 points) to 2019 (431.9 points). Then in year 2020 it dropped to 427.7 points. The dependence between the age of parents in the parent stock and live weight of chickens was moderate (r = 0.38; p < 0,001). Correlation relationship between the live weight of chickens at the age of day 1 and day 33 was medium (r = 0.60; p < 0.001). The lowest mortality rate from all the batches was in the first batch of 2016 (1.31%). On the contrary, the highest mortality rate was recorded during the fourth batch of year 2018 (4,30%).
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Zařazení barevné pšenice Skorpion do krmné dávky brojlerů
Pokorná, Martina
The effect of the feeding of blue-coloured wheat Skorpion on the carcass performance and antioxidant activity of broiler chickens was studied. Crafted feed mixture was used to fed male chicken hybrid Ross 308. Before the start of the experiment we have divided the broiler chickens to a weight-balanced groups. Each week was weighting individual animals. All of the data, and the changes was recorded. At the end of experiment we reviewed influence of colored wheat on the parameters of broiler chickens, especially the mass increases, feed conversion and slaughter yield. As a control sample of wheat was elected common variety with red grains - Vánek. Feeding with Skorpion wheat has not been proven, in the statistical processing, any influence on additions, feed conversion and even slaughter yield. On the contrary, the assessment showed the improvement of antioxidant capacity of wheat variety Skorpion.
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Hodnocení užitkových vlastností potomstva brojlerových slepic
MASÁROVÁ, Anna
The aim of the diploma thesis was to evaluate the performance of commercial broiler chicken genotypes Ross 308, Cobb 500 and Hubbard F15. Parental test consisted of parent rearing up to the age of 22 weeks, the laying period up to the age of 62 weeks and from fattening progeny tests (lasting for 35 days or else 42 days). Hybrid Ross 308 chickens reached the highest live weight at the end of the rearing period. Hubbard F15 chickens had the lowest feed consumption per head and day and also the lowest mortality rate. Hybrid Hubbard F15 showed the highest number of hatched chickens per 1 laying hen (137.2 pcs), the lowest feed consumption per head and day (149.4 g) and the highest fertility of hatching eggs (9,2 %). Hybrid Ross 308 showed the highest weight of hatching eggs and live weight at the end of the laying period (cockerels 5 029 g, pullets 4 310 g). Cobb 500 cockerels (2 397 g) and Hubbard F 15 pullets (2 145 g) showed the highest live weight during the 35 day fattening period. The highest breast weight was at the hybrid Cobb 500 (516.9 g) and the thighs weight was the highest at Hubbard F15 (511.9 g). The highest carcass yield was observed at hybrid Cobb 500 (76.30%). During the extended fattening period of 42 days had the highest live weight cockerels Ross 308 (3 096 g), Cobb 500 and Hubbard F15 pullets (2 688 g and 2 682 g). The highest breast weight was observed at hybrid Ross 308 (697.0 g) and thighs weight at hybrid Hubbard F15 (707.6 g). The highest carcass yield was at hybrid Hubbard F15 (78.0%).
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Porovnání parametrů užitkových vlastností kuřecích hybridů chovaných v odlišných technologiích
JURNÁ, Martina
A total of 169 batches of chicken (almost 4 million pieces) were included in the survey, of which 88 batches were Cobb 500 chicken and 81 batches Ross 308 chickens. The difference in the European Production Efficiency Factor (EPEF) was 30 points in favour of the Ross 308 hybrid when compared with the Cobb 500 hybrid (395 and 365 points respectively, P < 0.05). During the monitored years, the EPEF gradually increased from 357 points in 2014 to 404 points in 2017, i.e. by 47 points (P < 0.05). From the perspective of the hatchery influence (A and B), the Ross 308 hybrid was found have almost identical EPEF (394 and 395 points respectively). The EPEF of the Cobb 500 hybrid was 27 points higher in hatchery B (380 and 353 points respectively, P < 0.05). The dependence of the live weight of the hybrid at slaughter on the age of the parent flock was found to be r = 0.41, i.e. moderate, statistically significant. A higher EPEF was achieved when fattening in green light as compared with white light. For the Cobb 500 hybrid, the difference was only 2 points (367 and 365 points respectively). For Ross 308 hybrid, the difference was higher, 11 points (404 and 393 points respectively). In the high-capacity hall, fattening took longer than in the small-capacity hall. The difference amounted to 0.92 days for the Cobb 500 hybrid (33.66 and 32.74 days respectively) and 0.11 days for the Ross 308 hybrid (33.11 and 33.00 days respectively). The differences in live weight were small, i.e. 0.01 kg for the Cobb 500 hybrid (2.09 and 2.10 kg respectively) and 0.02 kg for the Ross 308 hybrid (2.12 and 2.14 kg respectively), as were the differences in the feed mixture consumption per 1 kg weight gain, i.e. 0.02 kg for the Cobb 500 hybrid (1.57 and 1.59 kg respectively) and 0.03 kg for the Ross 308 hybrid (1.56 and 1.53 kg respectively). Higher mortality was found in the high-capacity hall. It was slightly higher, by 0.06 %, for the Cobb 500 hybrid (3.26 and 3.20 % respectively). For the Ross 308 hybrid, there was a higher difference of 0.72 % (3.46 and 2.74 % respectively). The EPEF was found to be slightly lower in the high-capacity hall compared to the low-capacity hall. The difference amounted to 9 points for the Cobb 500 hybrid (383 and 392 points respectively) and 17 points for the Ross 308 hybrid (395 and 412 points respectively).
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Vliv výlisků ostropestřece mariánského v krmné směsi brojlerových kuřat na sensorickou jakost masa
Sedláčková, Kateřina
The aim of this diploma was evaluate the effect of feeding milk thistle (Silybum marianum L.) seed cakes on sensoric quality of broiler chickens meat. The experimental groups of broiler ROSS 308 received feed mixtures containing 0 % (C - control), 5 % (MT5) and 15 % (MT15) of milk thistle seed cakes. The chickens were fattened on conventional deep litter system. The trial lasted 37 days. Sensory analysis of breast and thigh muscle samples was evaluated in special sensory laboratory (Department of Food Technology, Mendel university in Brno) according ISO 8589. Breast meat was significantly (P < 0,05) rated as the best in parameter flavour in C (control) and MT15 group. The thigh meat was evaluated significantly (P < 0,05) best for colour and fibreness parameters in MT15 group. The addition of milk thistle seed cakes do not worsened sensory characteristic of breast or thigh meat of broilers and reflects standard sensory quality traits.
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Možnosti využití zbytků po zpracování technického konopí Cannabis sativa ve výživě brojlerových kuřat
Kratochvílová, Lucie
The aim of this thesis was to evaluate the effects of addition of technical hemp (Cannabis sativa L.) on performance parameters of broiler chickens. A total of 105 broilers Ross 308 were divided into three groups. The groups were identified: Cannabis 5, Cannabis 15 and Control. Group Cannabis 5 was fed with 5 % hempseed cake in feed composition. Group of Cannabis 15 was fed with 15 % hempseed cake in feed composition. Group of Control was not fed with hempseed cake. As a response criterion was chosen weight gain, feed conversion, lean meat, carcass yield and blood liver enzymes concentration. In this thesis, we focus on assessing the impact of hempseed cakes on weight gain, feed conversion and the carcass yield. The increments in body weight were significant statistical differences (P < 0.05). Broilers fed with 15 % hempseed cake in feed composition grew slowly and had worse feed conversion. Carcass yield was not affected (P > 0.05) by content of hempseed cake in feed composition. Measured concentration of enzymes in groups was not affected by contents of hempseed cake.
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Hodnocení výkrmu kuřat s využitím nášlapných vah
Bendeová, Tereza
The aim of the diploma thesis was to evaluate the data gained from a weighine-machine located right in the hall of the selected company. The weighine-machine together with thermometer and hygrometer measures the weight of chickens, numbers of chickens weighed, temperature, humidity and uniformity. The data acquired about the given batches are from September 2014 to March 2016 from both types of hybrids. The results show that hybrid ROSS 308 occurred more often above the growth curve, in summer months it had better daily weight gain and the highest uniformity. Hybrid COBB 500 had better increase in winter and its uniformity was higher in temporary and winter period. According to the correlation analysis, the fact was confirmed, that with the growing weight the number of chickens lowers. The average mortality was around 3 %, the exception was the batch 6/2015 when the mortality was 4,8 %.
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