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Vliv vybraného preparátu k synchronizaci říje na reprodukci prasniček
TESAŘ, Martin
The aim of this master thesis was to evaluate reproduction traits of gilts and sows and assess influence of selected preparation for estrus synchronisation on reproduction of gilts. There were 2 593 sows and 729 gilts in the test. There were evaluated data of reproduction performance of gilts both treated and not treated by Altresyn? with active ingredient altrenogest. Gilts from the experimental group were given altrenogest (20 mg) for the period of 18 days as a method for estrus synchronization. Total number of 528 synchronized gilts (95.3%) showed signs of estrus. 91.5% of treated gilts were inseminated 5th to 7th day after finishing the altrenogest application. The conception rate in year 2018 at mating without the estrus synchronisation was 81.2% and the farrowing rate 77.1%. The selected farm started using Altresyn? in year 2019. The conception rate went up to 81.8 % and farrowing rate to 78.2 %. (These figures were from January to November). The treated gilts gave birth to 0.19 total born piglets more (13.09 piglets vs. 12.90 piglets) and 0.23 live born piglets more piglets (12.25 piglets vs. 12.02 piglets) than to gilts that were not treated by altrenogest. The highest number of total born piglets (13.3 piglets) was at gilts that were inseminated in the age of 250-259 days and 280-289 days. The gilts that were not treated by Altresyn? were first mated earlier (252.5 days) than gilts treated by Altresyn? (254.7 days).
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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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