Angl. resumé

The aim of this study is to evaluate the reproductive and productive indicators of Landrace pig breeding. Sows of basic herd and breeding nucleus are divid into four groups according to the age of the gilts, sows at risk litters, the sows producing litters and sows for 6 or more litters. Reproductive indicators of sows, fertility (number of piglets born, number of piglets born alive, number of piglets weaned) and milk production, are evaluat. Comparing the results of the observed Landrace pig herd population in the Czech Republic, it found that better results are achieved by breeding Landrace population. The achievement in the observed enterprise is 15.8 ? 2.2 units of all piglets born in a litter, 14.4 ? 2.3 units of piglets born alive per litter and number of piglets wean per litter is 9.4 ? 1.6 piglets. Population reaches fewer piglets born in a litter and more of the preserv. This proves that breeding must seek to reduce differences between piglets born and preserv. This is relat to milk production of sows, which is also below the average for the whole population. Furthermore, the results of the performance of gilts and male pigs according to the methodology for field testing are evaluat. For performance testing the average backfat thickness (mm) of lean meat (%) and average daily gain (g) in the unified testing are assessed. Population achieves better results in the proportion of lean muscle in both gilts and male pigs for both monitoring years. The greatest difference is reach in 2013 with male pigs and that is about 7%. Backfat thickness is on average about 1 mm higher than the reference breeding population. Nowadays the interest in breeding animals is decreasing. In 2013, 3 male pigs and 88 gilts were sold.

The aim was to identify and assess the structure of practical ration on the particle separa-tor in holdings breeding more than 3,300 pieces of dairy. For the experiment was elected Penn State particle separator (PSPS), developed in 2002, and its improved model from 2013. The attempt took place at the Farm Majcichov, a.s. the Slovak republic. The total time of the experiment was 16 weeks. During the experiment, the observed structure of the diet, gluttony and performance of dairy cows, the number of animals in the group and the average days of lactation in the group. The qualitative composition of the milk was evaluated using data provided analyzes of milk from dairies. Data were averaged for each week. In the reporting period, the particle size of the feed stable, there were no variations in the structure and content of fiber, it was not possible to assess their impact on the performance of dairy cows. On the upper sieve (19 mm) caught an average 2,5 +- 0,83 % of particles, on the middle sieve (8 mm) 48,7 +- 7,44 % of particles, on the lower sieve (1,18 mm) 26,3 +- 1,98 % of particles and the bottom pen of the separator was sie-ved 22,5 +- 7,18 % of particles. Daily performance was on average 35 liters milk with 3,77 % of fat and 3,25 % of protein. It was found that the content of milk fat and other components of milk had a great influence heat stress in dairy cows.

This thesis on the topic "Initial selection pit row Holstein cows after coming out of the milking parlor," deals with the observation of cows in free housing boxing. When observations were recorded, only cows inside cubicles and these were mainly observed standing and lying down. Observations took place in the agricultural cooperative Telc. Stable was divided into nine sections. Observations took place in one section with an average of 55 cows. Among the influences that influenced the availability of boxes, or could in any way affect the filling of individual boxes, were included the following factors: lactation, milk yield, stable temperature and order in the parlor. The obtained results we can conclude that there are significant differences in preference filling boxes when most visited boxes were 17, 34, 36, 52, 53, 56, 60 and 62, at least the vacant boxes then only 3, 7, 49, 50, 37 . Furthermore, we can say that was a significant effect of lactation on the proportion of cows lying. The highest proportion of cows lying stationary compared to the first resp. 2nd lactation (92.3% resp. 79.9%), the lowest in the 3rd lactation (69.7%). We can note a significant impact on the proportion of milk yield of cows lying. It was highest in the yield of 20 <(80%), 15,1-20 kg of milk (78%), the lowest for the yield 10,1-15 kg of milk (72%). Was also found a significant effect on the proportion of stable temperature lying cows. This was the highest at a temperature of 10,1-15 ° C (80.2%), 5,1-10 ° C (78.3%), the lowest temperature to 5 ° C (72.2%). You can also say some influence in order to share parlor lying cow which was not as pronounced as in previous results. That was the highest for the second order in the parlor (77.4%) and third order (76.4%), the lowest for the first order in the parlor (74.4%).

The aim of the paper is to evaluate the status of breeding work in the reserve stock for selective breeding in Czech Landrace pigs. Evaluation covers the reproductive and productive indicators. The sows of the base stock are split into four groups by age structure: gilts, sows with risk litters, sows with production litters and sows with litter 6 or more. Evaluation covers reproductive indicators, i.e. fertility (number of piglets born, number of live-born piglets and number of surviving piglets) and milk production. The enterprise under evaluation achieved an average of 13 live-born piglets and 11 surviving piglets per sow and litter; the farrowing interval is seven days longer compared with what is normally reported as the best time. Evaluation covers the results of individual performance in gilts and male pigs according to the methodology for field tests. For individual performance, the assessment covers the average daily gain (g), the average backfat thickness (mm) and lean meat percentage (%). The herd shows a smaller gain, while backfat thickness and lean meat percentage is comparable with the population. Key words: Number of piglets, sow, fertility, performance

The aim of this diploma work was to evaluate the influence of a farm, a lactation order, and a month and a year of calving to the percentage occurrence and number of mastitis with cows. Besides, mainly an effectiveness of precautions, nursing works and farming technologies were evaluated. The evaluation was being performed during the years 2014 - 2015 at two farms situated in Slovakia which were breeding the breed of Slovak piebald cattle. Figures about the mastitis occurrence were acquired from the evidence of veterinary records of mastitis treatment and cows´dry out. Information about the number of somatic cells I have borrowed from Slovak republic breeding information system. For the figures evaluation a statistical program SAS 9.3 (SAS/STAT 9.3, 2011) was used. For the determination of basic parameters the procedures MEANS a UNIVARIATE were used. Observed indicators and basic statistics were evaluated for both arms together. Main parameters were evaluated statistically for both farms altogether. From the total number of 514 milk cows, was the mastitis occurrence recorded on the average in 29,77%, with the average length of treatment 1,94 days and milk cows´ lactation was on the average 2,81. The number of mastitis occurrence was on the average 0, 51 times, the highest frequency of mastitis occurrence achieved up to 6 times. Statistically significant influence of mastitis numbers to the percentage mastitis occurrence (P <0, 001) was proved. Percent of mastitis occurrence is provable influenced by a farm (P<0,001), a year and a month of calving (P<0,001) and lactation order (P<0,001). The number of mastitis is considerably influenced by a farm (P<0,001), a month and a year of calving (P<0,001). Percent of mastitis occurrence reached the highest figures on the 5th and the next lactation (68, 49 %) and the lowest % mastitis occurrence was recorded on the 1st lactation (45, 98 %). The number of mastitis occurrence was the highest on the 5th and the next lactations (1,19x) and the lowest on the 1st lactation (0,81x). Percent of mastitis occurrence was during the observed period higher at the farm PD Mestečko (66, 06 %) and the lowest at the farm PD Dolná Mariková (48, 96 %). Demonstrability on the boundary of statistic difference´ importance (P < 0, 01) was between % mastitis occurrence and both farms. The number of mastitis occurrence was higher at the farm PD Mestečko (1,22x) in contrast to the lowest at the farm PD Dolná Mariková (0,82x). Statistically proved difference (P < 0, 01) was between the number of mastitis occurrence and the farms PD Mestečko and PD Dolná Mariková. Percentage mastitis occurrence was the highest in April (79, 05 %), the lowest occurrence was in November (34, 30%). The number of mastitis occurrence was the highest in March (1,51x), the lowest was recorded in November and December (0,63x). The highest percentage mastitis occurrence (99, 92 %) was recorded in calving year 2013. The lowest mastitis occurrence was in year 2015 (19, 92 %). The number of mastitis occurrence was the highest in year 2013 (1,92x) and the lowest in year 2015 (0,33x).

The aim of this thesis was to evaluate the influence of lameness of Holstein breed milk cows on their dairy yield. The experiment took place in the farm Žabčice. The observation was carried out from July 2015 to January 2016. Cows were rated on a scale from 1 (no limping symptoms) to 5 (severe lameness). The milk yield , the fat and protein content and lactose were monitored. The phase and number of lactation cycles were considered as well. Analysis of gathering data shows that cows rated as 1 or 2 on the scale of lameness had a higher average milk yield (28.28 kg or 30.47 kg) and a lower number of lactation (2.26 resp. 2.55) than cows rated 3 or higher. Furthermore was found out that cows in the early phase of lactation cycle, 1 - 99 days or 100 - 199 days were rated lower on the scale of lameness (2.34 resp. 2.37) than cows in late phase of lactation 300 < (2.67). All aforementioned results were proven as highly statistically significant (p > 0.01). The expected influence of lameness on contend of compounds in milk was not proven. (p > 0.05).

In my work I deal with analysis of the impact of selected parameters of the breeding environment to live weight of cows. Observations took place in the company Golden Farm Ltd. in the village Štětovice with 60 pieces of Czech Pied breed. Among the parameters ana-lyzed were breeding environment milk yields, order and stage of lactation. Attention was dowry-Vána stage of pregnancy and the effect of the calendar month of the year on the live weight of cows. Data were collected during one year starting from September 2014 to October 2015. The obtained results were obvious influences lactation and gestation stage on live weight of cows. Cows at first lactation during gestation had lower weight (713 kg) than on the fifth (816 kg). Furthermore, it was found to influence calendar months of the year. Here, the weight varied depending on the season. Effect of milk production on a live weight of cows, but not conclusively confirmed, although cows with higher average milk yield of 25 l have a higher body weight (749 kg) than cows with milk yield up to 20 liters (703 kg).

No description available.

No description available.