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Analýza parametrů reprodukce prasnic ve vybraném chovu
HLATKÁ, Tereza
The aim of the thesis was to analyze the influences affecting the fertility of sows (number of piglets/1 litter) in the monitored breeding from the period 2017 to 2023. The highest number of piglets was in 2023, with a total of 15.89 born, out of which 13.53 were born alive (a difference of 2.36 piglets). The lowest number of piglets was in 2017, with 13.78 born in total, out of which 12.34 were born alive. Within the genotype, the highest number of piglets was recorded in the landrace breed sows, with a total of 15.05 born and 13.52 born alive. Conversely, in the duroc breed, the number of born piglets was 10.88 in total, with 9.35 born alive. There was a consistent difference of 4.17 piglets (P<0.05) between the two breeds in both total and alive births. For hybrid sows of genotype YL and (YL)D, there was a difference of 0.88 piglets (P<0.05) in total born and 0.67 (P<0.05) in alive born. The lowest number of total born piglets (14.04) and alive born piglets (12.81) were born to sows in their 1st and 2nd litter. Sows in their 3rd-5th litter showed the most total born piglets (15.25) and alive born piglets (13.48). From the 6th litter onwards, there was a downward trend in the number of piglets, with a significant drop observed in alive born, by 0.55 piglets (P<0.05). Sows inseminated at 250 days old had a litter frequency of 13.12 total born piglets and 12.09 alive born piglets. Sows inseminated at 251 days old had a litter frequency of 14.37 total born piglets and 13.13 alive born piglets, with a difference of 1.25 total born and 1.04 alive born. With the prolongation of sow gestation length, there was a slight decrease in both total and alive born piglets. Sows with a farrowing interval 147 days had a higher number of total born piglets (15.34). With an interval 148 days, the number of total born piglets was 0.48 lower (P<0.05). The same trend was observed for alive born piglets, with a difference of 0.37 (P<0.05) between sow groups. Sows with an interval from weaning to insemination 4 days achieved a higher number of total born piglets (15.31) compared to sows with an interval 5 days (14.88), with a difference of 0.43 piglets. The same trend was observed for alive born piglets, with a difference of 0.34 piglets.
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Reprodukční užitkovost v chovu prasnic
AIDELOMON, Emmanuel Onosimuan
The objective of this study was to analyse the level of reproductive efficiency of sows. Data of 1013 records of sows between 2019 to 2022 from a commercial herd were collected and analysed (Large White and cross between Large White and Landrace sows). Sows ranged from parity 1 to 7 with the number of parity grouped into 1-2 (1); 3-5 (2); 6-7 (3). Sows were raised in well-ventilated pens and were vaccinated according to the veterinarian's recommendations and sows were well-fed to meet their nutritional requirement. Water was available ad libitum via the drinking nipple system. All-born piglets and live-born piglets were analysed by monitoring the influence of parity, season at first conception, genotype, age at first farrowing, gestation length, farrowing interval, weaning-to-conception interval, year of conception and boar. Data were analysed using Statistika.12, TIBCO software package. Significant influence (P < 0.05) was observed between parity group 1 (parity 1-2) and parity group 2 (parity 3-5) for all-born piglets and live-born piglets with the highest value at parity group 2 (parity 3-5) and decreasing thereafter. Prolificacy (all-born piglets and live-born piglets) appeared highest in animals during the summer months and the lowest in autumn (statistically unconfirmed differences). Crossing sows between Large White and Landrace produced the highest number of all-born piglets, and sow Large White produced the highest number of live-born piglets. Crossing sows between Landrace and Large White produced a statistically lower number of piglets. Prolificacy at 361-381 days (age of first farrowing) was significantly different from < 361 days. There was reduction in number of all-born piglets and live-born piglets for above > 381 days when compared to 361-381 but it was not different statistically. Higher value was recorded for gestation length of 114 days compared to 115 days in all-born piglets and live-born piglets (but no significant influence). The mean of all-born piglets and live-born piglets shows that the larger the litter is, the shorter the gestation length becomes. Farrowing interval for 146 days had a high mean value for both all-born piglets and live-born piglets compared to 147 days but no significant influence. Weaning to conception interval for 4 days is significantly different from 5 days in all-live born piglets. The highest average for all-born piglets and live-born piglets was recorded in 2022 and the lowest was recorded in 2019. Result for 2022 was significantly different from 2019 and 2020 results. In conclusion, this study showed that sow parity, genotype, age at first farrowing, weaning to conception interval and boar can be used as indicators of reproductive performance. Furthermore, this study has provided the basis for future development of a benchmarking tool to monitor and improve productivity in sow herds.
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Poruchy plodnosti prasnic
Vašicová, Tereza
The bachelor thesis focuses on fertility disorders in sows. The first part describes the reproductive system, i.e. the reproductive organs of the sow; fertility and its parameters, which include internal and external factors affecting fertility, such as nutrition, microclimate, lenght of the inter-period or age of the sow. The sexual cycle of the sow i salso briefly described, covering all stages, namely proestrus, estrus, me-testrus and diestrus. The second part focuses on fertlity disorders, which are divided into congenital, which include developmental disorders or anomalies, acquired, which are most commonly caused by viruses or bacteria, and separately also infertility. For the disorders, the clinical manifestations of the disease, their onset, or prevention, and in some cases, if known, therapy are described.
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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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Zootechnické aspekty inseminace prasnic
Hájek, Petr
The aim of the bachelor thesis is to provide a comprehensive view on the issue of sow insemination and to summarize the current state of knowledge in this area of agricultural production. The bachelor thesis focuses on the description of insemination and on the zootechnical aspects that influence the insemination of sows. As insemination is the most used method of reproduction nowadays, emphasis is placed on the anatomy and physiology of the reproductive apparatus of the sow. Also described are the zootechnical aspects that affect insemination and how these factors influence it. In the last part of the thesis, the insemination itself and its methods of performance are described, discussing the advantages and disadvantages of insemination, including new options such as the semen capsule and its gradual release or a product to influence ovulation.
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Reprodukční užitkovost přeštických černostrakatých prasnic
Kaplanová, Petra
The aim of this thesis was to evaluate the reproductive parameters of the extensive breed Prestice Black-Pied. In the selected breeds the analysis of the effect of parity number on the number of all, liveborn and stillborn piglets, piglet losses and the number of weaned piglets. Furthermore, the reproductive and production indicators in sows of individual boar lines of the Prestice Black-Pied breed were evaluated. The best results were recorded in the sows of the 4th litter, namely in the number of all piglets born (10.58 ± 1.82 pcs), liveborn piglets (9.33 ± 1.71 pcs) and weaned piglets (8.71 ± 1.60 pcs). The lowest losses of piglets from birth to weaning were recorded in the 5th litter (0.36 ± 0.81). The reproductive performance of sows in the first litter according to the boar lines was evaluated. The highest number of all piglets born was found in the sows of the boar line Sáčko and Wiskont (11.00 piglets). In the number of liveborn piglets, the best results were obtained by sows of the boar line Wiskont (9.57 piglets). The number of weaned piglets was highest in the Sáčko boar line (9.00 piglets). The highest average daily gain in the own performance test was achieved by sows of the Mason line (592.88 g/day). Furthermore, the highest lean meat content was found in sows of the Sáčko line (61.20 %), while the lowest backfat thickness was found in sows of the Sáčko line (0.80 cm).
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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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