|
|
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.
|
|
|
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.
|
|
|
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).
|
|
|
Rozbor reprodukčních ukazatelů dosahovaných u prasniček a prasnic ve vybraném chovu
JEŘÁBKOVÁ, Adéla
The aim of this diploma thesis was to analyse the reproductive performance of sows at the particular farm during the time period 2018-2020. The highest number of piglets born alive was observed in 2018 (16.5 pcs; p < 0.05) with the highest rate seen among the sows that have had previously 3-5 litters (17.0; p < 0.05). The highest number of piglets born alive was observed at sows inseminated during the spring season. The average length of pregnancy of the sows during the monitored time period was 116 days. However, the highest number of piglets born alive was reached at sows with the pregnancy length between 110-115 days (16.6 pcs; p < 0.05). Most piglets born alive were born to gilts introduced to the breeding cycle at the age higher than 290 days (15.1 pcs). And lastly, most piglets born alive were born to the sows inseminated by the boar catalogued as #85 (17.1 pcs; p < 0.05). The number of stillborn piglets in 2018 was 2.3 pcs. The number increased to 3.1 pcs in 2019 and slightly decreased in 2020 to 3.0 pcs. The number of litters with 3 and more stillborn piglets was lowest (12%) during the 1st parity then it rapidly grew until it reached its peak during the observed period at the 8th parity (45%).
|
|
|
Vlivy výšky hřbetního tuku při zapouštění na reprodukční ukazatele prasnic
VALEŠKOVÁ, Denisa
The bachelor thesis topic is about rating of a sows reproduction attributes due to the backfat thickness during fertilization. In the academical part of this thesis are described primary factors which affects sows reproduction. The aim of thesis is evaluation of each reproduction factor affecting sows reproduction at the breeding farm. Data was collected in year 2019 from 1 865 pcs. gilts and sows stabled at the breeding farm. The measurement of the backfat thickness in the monitored group of pigs is done approximately one week before fertilization after weaning of sows to the separated cages. Best fertilization results sows and gilts achieves at the limits of measured values of the backfat thickness. In the monitored group, sows in average reach 17,2 piglets per birth that means 41,3 of all piglets born per year. The most live-born piglets from sows are in range from 8 mm to 18 mm and 18,1 piglets in average. The most live-born piglets from gilts are in range from 10 mm to 14 mm, which is lower values for backfat thickness, and 16,5 piglets in average.
|
|
|
Analýza vlivů ovlivňujících délku intervalu od odstavu do zapuštění u prasnic
BOUŠKOVÁ, Renata
The aim of the thesis was to assess and evaluate effects on weaning to service interval (WSI) in sows. On the sow farm, where the observation took place, were on average born 15.5 of all piglets/1 litter, of which 14.6 piglets were live born. The average length of the weaning to service interval in sows was 5.6 days. The most common length of WSI was 4 and 5 days (83.3 % of litters). In CLW sows (5.9 days) was found that the weaning to service interval was 0.4 day longer than in CLWxCL hybrid sows (5.5 days). With the rising parity number, the length of WSI declined. There was proven a difference of 1.2 days (p < 0.05) between the parity 1 (6.0 days) and the parity 5 (4.8 days). In terms of parity number and sow's genotype, the largest difference was recorded in the parity 1. In hybrid sows CLWxCL was WSI (5.7 days) 1.3 days shorter compared to CLW sows (7.0 days). The highest number of all piglets born was found in sows in the parity 3 (16.1 piglets), while the most live-born piglets were recorded in sows in the parity 2 (15.0 piglets). The shortest WSI (5.3 days) was in the winter and the longest WSI (5.9 days) in the autumn. The highest number of all born piglets was born to sows with the WSI length of 0-3 days (17.5 piglets). With increasing WSI, the number of all piglets born decreased. The lowest number of all born piglets (15.1 piglets) was in sows with WSI length of 6 days. In the weaning to service intervals longer than 6 days, the number of all piglets born increased.
|
|
|
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.
|
|
|
Sexuální projevy u kanců a prasnic
JELÍNKOVÁ, Lenka
The bachelor thesis deals with sexual manifestations in boars and sows. The aim of this thesis is to monitor and evaluate sexual manifestations in boars and sows in conventional breeding. The bachelor thesis is divided into a theoretical and a practical part. The theoretical part is focused on the importance of breeding, breeding history, pig numbers and the breeding system in the Czech Republic. The focus is then placed on the development of pig genitals, sexual activity management, sexual behavior and sexual reflexes. The practical part covers the principal assessment, which is based on permanent monitoring of pigs during sexual intercourse. Individual sexual reflexes time duration, specific manifestations or caregiver interventions are closely followed. Sexual behavior was monitored in a pig herd numbering 17 boars and 71 sows (of which 10 were gilts) with a total number of 202 matings, of which 102 were successful (need for assistance being 51.8 %) and 100 unsuccessful. The results were formulated in tables and graphs.
|
|
|
Analýza vlivů působících na reprodukční parametry prasnic
BOUŠKOVÁ, Renata
The bachelor thesis in form of literary research elaborates an overview of sow reproduction and the factors that can influence the sow fertility. The attention was focused mainly on the sow oestrus cycle, the integrating gilts into herd (age at the first mating), farrowing, farrowing interval, gestation length, weaning-to-first service interval and methods of controlled reproduction. The thesis also deals with the issue of feeding strategy and housing conditions of sows in individual stages of the reproductive cycle.
|
|
|
Chov prasat plemene bílé ušlechtilé v České republice
ROHÁČEK, Daniel
The goal of this bachelor thesis is to analyze the results that have been provided by the Czech Association of Pig Breeders regarding productivity of Czech Large White breed. For the ob-served period of 1999-2017, the intention was to compile the tables that would summarize the number of litters, number of born piglets in one litter (all vs. live born), number of piglets sur-viving 21 days, weight of piglets after 21 days, and average time between 2 litters. The source materials and the used literature clearly indicate that the swine production in the Czech Republic is shrinking. Swine breeders are closing their production due to instable price of pork meat. The number of sows decreased by 177 755 between 1999 and 2017. As a con-sequence, the number of litters declined as well. On the other hand, this impact is compensa-ted by permanently shortening time distance between two consecutive litters, which currently stands at 156 days. This logically results to increasing number of litters per sow, now amoun-ting to 2.4 per year. Effective breeding also leads to increasing number of piglets in one litter. In 2017, one sow brought in average 14.8 piglets in a litter, of which 13.4 live born. Also the number of successfully bred piglets is growing thanks to improving technologies and better trained pers onnel, having reached 11.7 piglets per litter in 2017. Sows of Czech Large White breed deliver increasing lactescence, as the weight of a litter after 21 days grew in the obser-ved period by 13.4 kg to 69.1 kg. In the next part of the thesis, analysis is made for field tests and results of the unified test, both supplemented by tables and charts. For the observed period, the goal also was to evaluate the average daily weight gain, the percentage share of muscle mass, and the average thickness of saddle fat in mm of both sows and boars. It was found out that the Czech Large White breed had an excellent meat utilization. The share of lean muscle is increasing continuously - in 2017 it reached 63.6 % for boars and 63 % for sows. The vast majority of supplied pigs was classified into the highest-quality categories. The final part of the thesis contains the list of farms that were certified for breeding the Czech Large White breed in 1999 - 2017. The number of such farms was growing until it rea-ched 24 in 2001 and 2002. However, after subsequent decline there was only 6 such farms in 2017.
|
guest ::
