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Vhodnocení vlivu reprodukce na mléčnou užitkovost dojnic plemene český strakatý skot
ŠVAJLENOVÁ, Kamila
This work on the topic "Evaluation of the effect of reproduction on the milk yield of dairy cows of Czech pied cattle" deals with reproductive indicators that affect the milk yield of dairy cows. These indicators were monitored and evaluated in two different herds in the company JASANKA s.r.o. From both herds were selected 50 cows, in which the reproductive effects on milk yield were determined and subsequently evaluated, and then the herds were compared. The first part of this work deals with the breed Czech pied cattle and his history, reproduction and milk yield of cattle. Further were introduce the company JASANKA s.r.o. and in the last part of this work were introduce the results found in the herds. The first of the monitored indicators was the age at first calving, then the interval, service period, insemination interval, insemination index and reproductive disorders in the herds, and last but not least, recommendations for breeders to improve reproduction and milk yield in the herds. During the study, it was found that the average time of first calving in the given herds is 30-31 months and 26-27 months. The average values of the interval are 399 days and 406 days. The average values of the service period are 117 days and 124 days. Another of the examined effects was the insemination interval, for which the average values were 67.5 days and 74 days. The insemination index is 1.9 in both herds. Were discovered very high values of reproductive disorders and it 90% and 40%. Although the second does not show the best results, in some cases they are worse than the first herd, the level of milk yield is much higher here.
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Analýza reprodukčních a produkčních vlastností ve dvou vybraných chovech prasat
BEDNÁŘOVÁ, Kristýna
The aim of the diploma thesis was to analyse reproductive and productive performance of sows at two sow farms evaluated 432 litters at farm A and 321 litters at farm B. Better reproduction results were achieved at farm A. In 2019 the difference between farm A and Farm B was 2.3 pcs in number of all born piglets (16.3, resp. 14.0 pcs; p < 0.05), 2.5 pcs in live-born piglets (14.7, resp. 12.2 pcs; p < 0.05) and 1.7 pcs in weaned piglets (12.9, resp. 11.2 pcs; p < 0.05). In 2020, the difference between farm A and farm B was in the number of all born piglets 2.6 pieces (17.2, resp. 14.6 pcs; p < 0.05), live-born piglets also 2.6 pcs (14.2 resp. 12.0 pcs; p < 0.05). The farrowing interval was 149,3 days in 2019 and 151,2 days in 2020 at farm A. The farrowing interval was 161,8 days in 2019 and 159,4 days in 2020 at farm B. The number of teats was monitored at 6 584 sows at farm A and 4 210 of sows at farm B. The total number of 16 teats was at 12.8% sows at farm A and 18.2% of sows at farm B. Productive performance in the field test was evaluated at 304 gilts (farm A) and in 394 gilts (farm B). In 2019, the average daily gain in field test at farm A was 36.5 g higher than at farm B (998.1, resp. 961.6 g; p < 0.05). In 2020, the average daily gain in field test at farm A was 46.5 g higher than at farm B (985.7, resp. 939.2 g; p < 0.05).In 2019, the average backfat thickness at farm A was 0.1 mm higher than at farm B (6.6, resp. 6.5 mm). In 2020, the average backfat thickness at farm A was 0.1 mm lower than at farm B (6.8, resp. 6.9 mm). In 2019, the lean meat content at farm A was 0.3% lower than at farm B (59.1, resp. 59.4%; p < 0,5). In 2020, the lean meat contentat farm A and at farm B was the same 58,5%.
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Faktory ovlivňující reprodukční ukazatele prasnic
CHOUTKOVÁ, Martina
The aim of the bachelor thesis was to analyse individual reproductive indicators in selected breeding parameters (the number of all piglets born, live born piglets, and wean piglets, wean to insemination interval, a farrowing interval, the age at the first insemination and the percentage of gravid and farrowed sows after insemination). The results of the reproductive indicators, for an observed period of a time, are compared between farms and confronted with the results of other authors. From the researched subjects there were 29 867 births of sows and gilts, from June 2019 to July 2020, in which an average were born 15.1 piglets out of which 13.8 were live born and 11.8 were weaned. The average wean to insemination interval was 6.1 days, and the average farrowing interval was 150.8 days. The gilts were inseminated approximately at the age of 265 days. 93,1 % of all inseminations ended in gravidity.
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Fázová výživa dojnic
URSOVÁ, Lucie
The bachelor thesis is focused on the phase nutrition of dairy cows, ie nutrition in the meantime. It points out the critical phases of the transit period and early lactation, when the feed ration changes significantly and the transition from low-energy to energy feed. First, the individual nutrients of the feed are introduced, their importance and need are given. Furthermore, the phases of the intervening period, their specifics and nutritional requirements are described. This work also deals with the composition of feed rations from individual components and the appropriate use in individual periods.
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Analýza vybrané ekologické farmy
Navrátilová, Iva
The aim of this diploma thesis was the analysis of organic farm AgroFyto spol. s.r.o., which deals with dairy cattle breeding and suckler cattle. In an analysis of selected indicators were evaluated for milk production, selected parameters of reproduction and meat production. The results of the system of classification of carcasses of SEUROP cattle were evaluated within the meat yield. The animals were monitored for the period 2014-2017. Values related to dairy yields and dairy reproduction were obtained from performance monitoring for 2015 and 2016. The individual years were divided into four seasons after three months. In this work was evaluated the effect meantime, the time of calving, lactation, breed and season on the amount of milk in the period, as well as the impact on the amount of milk fat and protein content of milk for the year 2015 to 2016. The analysis revealed a difference in the evidence of the effects on milk in the monitored period. Regarding the influence of milk volume on fat and protein content in milk, this effect has been demonstrated only in one of four seasons. In the analysis, the effect of the season on the amount of milk was not statistically proven. Compared to organic farm BEMAGRO a.s and foreign ecofarm, it was found that cattle on dairy farm AgroFyto spol. s.r.o. Better results in the quantity of milk in question over the reference period. Dairy Farmer FARMA ZPZ s.r.o. But they have a better milking. AgroFyto spol. s.r.o. Has a dairy with the lowest protein content in milk and the highest fat content compared to two organic farms. Compared to the overall results of the KU in the Czech Republic, AgroFyto spol. s.r.o. Lower milk yield, but higher fat in milk.
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Vyhodnocení reprodukčních schopností a růstu potomstva u plemene Masný simentál
Chytka, Vladimír
Beef Simental is a beef breed that is bred almost all over the world. In the Czech Republic there is the third most widespread of meat breeds in the number of cows. Most breeding bulls of this breed act in natural breeding, which confirms its popularity in commercial crosses. This diploma thesis was focused on growth ability and evaluation of reproductive indicators in five breeds dealing with breeding of this breed in performance control. The influence of breeding conditions, sex, breeding method, calving on weight of calf at birth, at 120, 210 and 365 days was monitored. Furthermore, the length of the interim period, the age at the first calving and the order of calving of the cows in the herd of individual breeders were determined. The influence of breeding conditions, breeding method, sex and calving rank was statistically highly significant (p ˂ 0.01). Difference between calves born after insemination bulls and after natural breeding was 25 kg. Bulls had higher weights in all reference periods (120, 210 and 365 days). The difference between the average weight of a bull and a heifer was 146 kg. There was a statistically significant difference (p ˂ 0,01) between the calves from the first calvers and the cows on the second calf and the other calves in weight. The average age at first calving in the evaluated farms is 954 days which confirms the current trend but is in conflict with the breeding goal of this breed.
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Vyhodnocení reprodukčních ukazatelů v chovu skotu zaměřeného na produkci mléka
Klimešová, Michaela
In this diploma thesis an analysis of the reproductive indicators was performed in dairy cows of Holstein cattle and dairy cows of Czech fleckvieh on the four different farms located in the Vysočina region. In the thesis were evaluated average values of reproductive performance – service period, interval, insemination index, interim and pregnancy percentage. All values were compared between individual stock and between breeds. In addition, the success rate of slaughter in individual seasons was evaluated. A total of 772 inseminations were performed at ZOD Habry in the monitored pe-riod, the service period averaged 84.6 days, interval 59.6 days, insemination index 2.04, interim 375 days and 47.3 % pregnancy percentage. The highest pregnancy was in De-cember, January and February, while the lowest was in August, September and October. The second breeding of Czech fleckvieh was KLAS a.s. In this period, 510 inseminations were performed. The pregnancy percentage was 42.1 %, interim 387 days, the insemination index was 2.6, the interval of 63.8 days and the service period was 102.6 days. The lowest pregnancy values were in June, July, August and September. Highest in the months of March, April and October. The third agricultural enterprise was Osiva Přibyslav a.s., which bred Holstein cattle. In the meantime they reached values of 392 days, pregnancy percentage 43.3 %, interval 72.7 days, service period 120.3 days and insemination index 2.44. In total 702 inseminations was performed for the given year and the most pregnant dairy cows were in November, December and October, on the contrary in the summer months. The last breeding company was AGRO Posázaví a.s. breeding Holstein cattle. The lowest values of pregnant dairy cows were in the summer months and the most pregnant dairy cows were in the winter months. Interval values reached 70.3 days, insemination index 3.2, pregnancy percentage 33.8 %, interim 408 days and service period 125.8 days. A total of 1546 inseminations were performed.
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Biologické a ekonomické aspekty délky mezidobí skotu
Chvátalová, Dominika
Thesis was focused on the analysis of factors that cause variability of calving interval in Holstein cattle. There are also analyzed the economic aspects of calving interval in the dairy cattle. The length of the calving interval was significantly affected by the month of conception, sex of calves, lactation, birth of twins and birth of alive and dead calves. The results show that the calving interval is influenced by various factors that need attention.
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Zhodnocení produkce selat v rámci firemního programu
TESAŘ, Martin
The aim of the bachelor thesis was evaluated in the Martínkov breeding industry, the company Dešná, the reproductive utility of sows of the company Hypor program and the factors that affect it. In the thesis there is an outline of the effect of external and internal factors affecting the fertility of pigs and especially the influence of the genotype, the age of 1st pig embarrassment, the intervals, the order and number of the litter, nutrition and feeding, microclimatic conditions and the operation of the technology. At the end of the thesis are summarized the acquired knowledge, which contribute to the improvement of pig reproduction indicators. The monitored herd of rearing as of December 31, 2017 consisted of 800 sows (including pregnant gilts) and 230 unrestrained gilts. The first placement of gilts in the holding is most often performed from the 230th to the 260th day of life. In the reference year 2017, an average of one sow per year was 34 live births and 30.7 weaned weaners. Altogether, 23 232 weaners were weaned per year.
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Vliv délky mezidobí na tržní produkci mléka dojnic českého strakatého plemene skotu
Šmejkalová, Kristýna
This bachelor´s thesis deals with various influences on the dairy market. Into these selected impacts were included: the length of the calving interval, the lactation phases and also the lactation sequence. When examining the length of the calving interval, it was found out that the length of the calving interval strongly influences the amount of milk production. With the increasing length of the calving interval the quantity of milked milk rose from 8 249 kg up to 12 180 kg and also the revenues rose from 59 228 CZK up to 87 452 CZK. I have also studied the phase of the lactation and I can say that with the increasing stage of lactation the milk performance decreased from 100% to 65%. I have also noticed that the highest milk performance is on the 3rd and higher lactation when the average milk yield has increased at first lactation from 5,749 kg to 8,105 kg, and revenues increased from 41 278 CZK to 58 194 CZK.
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