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Analýza ztrát selat v konkrétním chovu
Fabiánek, Tomáš
The aim of this thesis was to evalulate reproductive traits of sows in specific farm. All data was collected in period 2017-2021 from sows which are raised by agricultural company GenAgro Říčany a.s. In data there are informations about 3862 litters in total. In sows there was observed gestation length, number of piglets total born, number of liveborn piglets, stillborn piglets, weaned piglets, preweaning mortality in litters and reasons for their elimination. There is evalulation of effect of year, parity and gestation length on these reproductive traits in this thesis also. Statistica and R programs were used to perform this evalulation. Average gestation length for the whole period was 113,92 days. Average number of piglets total born was 15,74. Average number of liveborn piglets was 12,84 and stillborn piglets was 2,89. Average number of weaned piglets was 11,86. Average number of preweaning mortality was 1,78. There was observed significant effect of year, parity and gestation length on reproductive traits in this thesis.
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Intrauterinní růstová retardace selat
Kršová, Eliška
This bachelor's thesis focuses on intrauterine growth restriction of piglets. The first part of the thesis deals with sow hybridization, the creation of super-fertile sow lines, and how breeding can affect litter size. The second part focuses on the issues of highly fertile sows, particularly in terms of nutrition, housing, delivery, lactation, weaning, and preparation for the next pregnancy. The third part focuses on intrauterine growth restriction of piglets. This section describes what this condition means and what can influence it. The fourth part deals with problems in piglets with intrauterine growth restriction. Methods for the application of artificial milk, the use of surrogate sows, or split nursing are described here.
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Vyhodnocení reprodukční užitkovosti prasnic ve dvou typech porodny
Zahnáš, Radek
The aim of the thesis was to evaluate the reproductive performance of sows in two types of farrowing houses. These were the old maternity ward built in 1957 and the new maternity ward built in 2019. The monitored indicators were age at 1st insemination (days), age at 1st farrowing (days), number of all piglets born (pc/litter), number of live-born piglets (pc/litter), number of surviving piglets (pc/litter), length of weaning (days), losses of piglets in total (pcs), losses of piglets from birth to weaning (%, pcs), number of inseminations needed to impregnate a sow (insemination index), length of the intermediate period (days), length of the service period (days), length insemination interval (days), length of pregnancy (days), reasons for sow rejection (%) and reasons for losses of piglets to weaning (%). The data was evaluated using the Statistica 14 program (ANOVA, Turkey's test). 100 sows were monitored in both types of births on the 1st-3rd. litter. The new maternity ward achieved better results for all monitored indicators, except for the length of pregnancy. For all born, live-born and reared piglets, it reached the highest values at the 3rd parity. The shortest weaning periods in both the new and the old maternity wards were at the 2nd parity. Piglet losses from birth to weaning (%) were lowest at parity 1. At the 2nd and 3rd parity, the differences were very highly statistically significant. The insemination index ranged from 1.08 to 1.22 for both types of deliveries. The shortest intermediate period (150.16 days), service period (33.84 days) and insemination interval (36.52 days) was achieved by the new farrowing house between the 2nd and 3rd litter. The length of pregnancy was almost the same, but the old maternity ward fared better, when its average length of pregnancy was the shortest for the 2nd and 3rd litters at 113.5 days. At the new maternity ward, the shortest pregnancy was found in the 3rd litter of 113.66 days. The most common reasons for sow bracken were reproductive disorders (37%), locomotor disorders (21%), low performance (16%), udder disorders (9%), poor condition and health, both (6%) and age (5%) ). The most common cause of losses in both types was littering (50%) in the new maternity ward and (65%) in the old one. Furthermore, diarrheal diseases in the new (20%) and in the old (15%). Other causes were respiratory problems, starvation and unknown reasons.
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Analýza reprodukční užitkovosti prasnic ve vybraném chovu
Bauerová, Šárka
The aim of this bachelor thesis is to evaluate the reproductive performance of sows in a selected enterprise. In the literary part of the thesis the state of pig breeding in the Czech Republic, reproductive characteristics of sows and basic indicators of reproductive perfor-mance in boars are described. For the reproductive traits of sows, such as fertility and milk yield, external and internal factors affecting them are described. The methodology of the bachelor thesis includes general characteristics of the enterprise. Indicators of the sow herd, including young sows, which consisted of an average of 500 sows, include the % of sows farrowed after first insemination, the number of all piglets born and the number of stillborn and live-born piglets.The length of weaning and number of piglets weaned, the age structure of the sow herd and the reasons for weaning were also assessed. The results obtained are compared with the results of the reproduction indicator in the Czech Republic and also in the Vysočina region. A proposal is included for the optimization of breeding conditions that could influence reproductive indicators and improve reproduction in the breeding.
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Analýza reprodukčních vlastností prasnic ve vybraném chovu
KUČEROVÁ, Marie
The aim of the thesis was to analyse the reproductive parameters of the CLW and CLWxCL sows group in selected breeding group (CLW - Czech Large White, CL - Czech Landrace). Sows, compared to gilts, had more all born piglets born after 100 services (by 118 piglets more after 1st insemination and 116 piglets more after all inseminations). The CLWxCL sows gave birth to 0.10 more all born piglets and 0.21 live piglets more. The highest number of piglets, all and live, was born in the 4th parity. The correlation coefficients between the age at the 1st service and the number of all resp. live-born piglets were low. Only 0.1 live piglets were born to CLW sows with weaning to service interval (WSI) from 5 days compared to WSI to 4 days. In CLWxCL sows, more live-born piglets showed sows with WSI to 4 days compared to sows with WSI from 5 days. The difference was higher, namely 0.8 piglet (P < 0.05). In the case of CLW and CLWxCL sows was confirmed a statistically significant difference in the number of live-born piglets between the sows with a gestation length from 116 days, up to 114 days and 115 days. Most of the piglets were born after AMD 74 boar and the lowest number after AMD 101 boar.
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Faktory ovlivňující zabřezávání u prasnic
JEŘÁBKOVÁ, Adéla
The aim of the bachelor thesis was to evaluate the farrowing rate in gilts and sows in selected breeding group. The average farrowing rate of 80.9% was identical for sows and gilts. The highest farrowing rate of 84.0% was in year 2015. In year 2016, the farrowing rate decreased by 6.8% (77.2%) and in year 2017 there was an increase of 4.3% (81.5%). The differences were statistically significant. The highest farrowing rate (83.5%) was during the spring period. Winter and summer period showed similar farrowing rate (81.3% and 81.0%, respectively). The lowest farrowing rate (77.8%) was during the autumn period. The difference between the farrowing interval in spring and autumn was 5.7% (P < 0.05).
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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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Hodnocení parametrů plodnosti prasnic ve vybraném chovu
MICHŇOVÁ, Iveta
The aim of the thesis was to analyse the reproduction performance of sows achieved in selected breed. In the reporting period were on average born 12.6 total-born piglets, of which 11.7 live-born piglets. The highest number of live-born piglets was born of hybrid combination sows (CLWCL)CLW, 12.0?3.1; compared with sows CLWCL (11.8 ? 3.0) and CLW (11.6 ? 3.2). The most of live-born piglets were demonstrated from 3rd and 4th parity (12.6 ? 3.1 and 12.5 ? 3.1). Gilts at the age of first mating at 230 to 250 days, reached a higher number of live-born piglets (9.9 ? 2.8) compared to gilts with the age of first mating to 229 days (9.5 ? 2.5). Difference of 0.4 piglet was statistically highly significant. Sows with gestation length to 114 days had 1.3 piglets more (12.0 ? 3.1) than sows with gestation length 115 days or more (10.7 ? 3.1). Difference of 1.3 piglets was statistically highly significant. Sows weaning-to-conception interval within 4 days showed a higher number of live-born piglets (12.3 ? 3.0) than sows with 5 days or longer (11.4 ? 2.9). Difference of 0.9 piglet was statistically highly significant. Effect of farrowing interval (132145, 146160 and 161200 days) on the number of live-born piglets (12.1 ? 3.1; 12.2 ? 3.1 and 12.2 ? 3.2) was not statistically significant.
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Analýza plodnosti prasnic ve vybraném chovu
KUBALOVÁ, Markéta
The goal of the thesis was to analyze reproductive performance of sows in a selected breeding facility during a three-year period. 602 litters of the breed Czech Large White pig (CLW), 7 632 litters of the Czech Large White the Czech Landrace pig (CL) and 397 litters of the Czech Landrace Czech Large White were included in my observation. The average number of born piglets 15.43 was reached in the basic set of sows, out of which there were 14.25 live-born piglets. The highest number of all born piglets was found in CL CLW (16.25 pcs), followed by CLW (16.03 pcs) and CLW CL (15.34 pcs). The highest number of live-born piglets was found in CLW (14.51 pcs), then with a slight gap followed CL CLW (14.36 pcs) and the lowest number was found in CLW CL (14.22 pcs). The average age at first conception of sows was 235.7 days. Sows, younger than 229 days at first conception gave birth to 0.39 piglets more than sows of the age 230-250 days at first conception (13.42 or 13.03 piglets). The average gestation length was 115.7 days. More piglets were born to sows with gestation length shorter than 115 days, than to sows with gestation length 115 days and more (14.55 or 14.18). The difference of 0.37 piglets was statistically confirmed as highly relevant. The average length of weaning-to-conception interval was 5 days (4.97). More piglets (by 0.44) were born to sows that were serviced within 4 days after weaning, than to sows serviced within 5 and more days (15.03 or 14.58). The difference was confirmed as statistically highly relevant. The average length of farrowing interval was found 152.9 days. Sows were categorized into three groups based on this interval, 132145 days, 146-160 days and 161200 days. Most piglets were born to sows with farrowing interval 146160 days (14.58) and least to sows with farrowing interval 161200 days (14.51).
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Vyhodnocení plodnosti prasnic ve vybraném chovu
NĚMCOVÁ, Eva
The goal of the thesis was to analyse the reproductive performance of sows at a selected farm during years of 2011 - 2015. As a main performance indicator we picked a number of live born piglets per sow and litter. Average number of born alive piglets per litter was 12.54. Highest average was reached by Large White breed with 12.70 piglets in a single parity. Highest average over observed period occurred in 2012 with 13.07 live born piglets. Most productive month was May with 12.81 piglets per parity.First parity produced least amount of piglets (11.94), this metric increased until 4th litter to 13.11, and since 5th parity the parity number slowly decreased. Sows with a shorter farrowing interval (under 145 days) exhibited slightly lower fertility than sows with a longer interval (12.64 and 12.75 live born piglets/parity respectively), the difference being 0.11 piglets per sow. Measuring the effect of length of weaning-to-conception interval, sows with interval of 5 or less days produced more live-born piglets per parity (12.69) than sows with interval of 6 and more days (12.55). As for effect of gestation length, sows with shorter gestation (114 days or less) farrowed more piglets (13.10) than sows with longer gestation (115 days and more 12.14 piglets). Examining gilts, the ones mated in earlier age (under 8.3 months) had smaller average litter size of 11.80 piglets vs. 12.29 piglets for gilts mated after 8.3 months. For 92.05 % of observed sows, a single mating was sufficient, and these had higher farrowing rate of 12.55 vs. 12.35 for sows requiring repeated mating.
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