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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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Analýza užitkových vlastností chovu prasat zařazeného do kontroly užitkovosti
JELÍNKOVÁ, Lenka
The aim of the diploma thesis was to analyse reproductive and productive parameters at a particular pig farm participating in the performance testing. The monitoring took place between years 2019 to 2021. The sow reproductive traits included sows of the Czech Large White - CLW (977 litters), CLW x CL (CL = Czech Landrace) (616 litters), Duroc (169 litters), Pietrain (156 litters), 125 litters by boars D x LWSL (Large White - sire line) and 146 litters by boars Pn x LWSL. Higher number of total born (15.6 vs. 15.4 pcs), live-born (14.5 vs. 14.3 pcs) and weaned piglets (13.5 vs. 13.2 pcs) was confirmed within maternal breeds in CLW x CL sows, compared to CLW sows. The highest number of total born, live-born and weaned piglets was confirmed within the paternal breeds after boars D x LWSL (11.2 pcs, 10.3 pcs and 9.6 pcs). The lowest fertility level was found out at the Pietrain breed (10.0 total born, 9.2 live-born and 7.7 weaned piglets). Boars of the CLW (1,448 pcs), Duroc (434 pcs), Pietrain (339 pcs), D x LWOL (368 pcs) and BO x Pn (363 pcs) and gilts of the CLW (3,479 pcs), Duroc (487 pcs) and Pietrain (343 pcs) were analysed in field test. The highest average daily gain from the birth was achieved by boars LWSL x Pn (730 g), the lowest average backfat thickness was achieved by boars D x LWSL (5.2 mm) and the highest lean meat content was achieved by boars Pietrain (62.2%). The best performance traits in the field test were recorded in boars in 2020. The highest value of the average daily gain from the birth was in CLW gilts(659 g) and the lowest average backfat thickness (5.2 mm) and the highest lean meat content (62.5%) were in Pn gilts. The best results of the field test of gilts were reached in 2021.
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Analýza reprodukčních vlastností plemene zwartbles
DVOŘÁKOVÁ, Jana
The thesis was focused on the reproductive traits of zwartbles breed level evaluation in Novosedly nad Nežárkou, evaluation data were compared with the average values of reproductive traits of zwartbles flocks, included in the performance monitoring of sheep in the Czech Republic, using statistical methods. Simultaneously, there was the effect of factors that might affect reproductive traits of the breed evaluated. 111 ewes were evaluated during the period 2012-2015. The average fertility in the sheeps during the monitoring period amounted to 175,7 % and an average rearing amounted to 88,5 %. There was a significant difference in fertility (p < 0,05) and even highly significant difference in rearing (p < 0,01) among the monitored flock and the flocks in the performance monitoring. The percentage of fertilization and intensity in breeding didn´t achieve satisfactory values, primarily due to the high percentage of futility in sheep in average of 25,5 %. All the reproduction indicators are below the breed average. Lambing number on litter size was evaluated as highly significant (p < 0,01). Ewe age at lambing was assessed as a highly significant influence exerted on fertility (p < 0,01). Influence paternal lines of ewes on their fertility was not statistically demonstrated (p 0,05).
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