|
|
Reprodukční výkonnost ovcí v ČR
Čudan, František
The aim of this thesis describe how we evaluate fertility and reproduction of sheep in performance testing in Czech republic, include evaluation of new traits of reproduction performance. In evaluation was traits ewe lambing rate, lambs per ewe, lambs per ewe lambing, lambs reared per ewe lambing, as a new trait weighed lambs (all in percents) and additionally lambs growth to one hundred days of life. All reproduction traits and weight of lambs in one hundred days of life have increasing tendency in Czech republic, although they are impacted by year and environment. On the percent of weighed lambs have strongest impact herd production system. The fertility and reproduction performance of sheep in performance testing in Czech republic is on the same level, like in the sheep breeding developed countries.
|
|
|
Vlivy působící na plodnost bahnic plemene valaška.
FREMLOVÁ, Aneta
The aim of this diploma thesis was the analysis of selected factors and their influence on the fertility of ewes in the Wallachian sheep breed. These factors were presented over the age of ewes for fertility, litter size and lamb survival. The second factor was the influence of the sire line on fertility, litter size and lamb survival. For this purpose, a farm in Dlouhá Stropnice was chosen. First the herd was introduced, then statistically described and finally a statistical analysis of selected factors was performed. Based on the achieved results, recommendations for breeders were proposed.
|
|
| |
|
|
Vyhodnocení reprodukce v chovu ovcí clun forest
KLEČÁKOVÁ, Martina
The aim of the diploma thesis was to evaluate reproduction indicators (percentage of pregnancy, fertility, intensity, total rearing, reactivity, rearing of lambs born and total lamb mortality), their comparison over the years and the average in the Czech Republic. The influence of the age of the mother on fertility and the proportion of sheep according to the frequency of litters was also evaluated. Monitoring was carried out in breeding sheep clun forest (at 30 ewes) at Studnice farm from 2015 - 2018. In the monitored reproduction indicators, there was a statistically significant effect (P 0,01) only in the fertility of the herd in question for the period 2015 - 2018. This was caused by higher fertility differences in the first two years on average by 10% between selected breeding and average in the Czech Republic . For the past two years, fertility was on average 25% lower than the national average. When assessing the effect of maternal age on fertility, the highest fertility rates were in three-year-old (174%) and four-year-old sheep (168%). The effect on the highest fertility rates was the highest number of lambs born (about 2 lambs per sheep). Since the third year of age fertility has fallen until the fifth year. Then there was a slight increase (the number of born lambs in the sheep (1.5 lambs) increased) and the lowest fertility (133%) was found in seven-year-old and older sheep, when the number of lambs was also decreasing. Based on the above data on the effect of age on fertility, a statistically highly significant effect (P 0,01) was observed in the observed breeding for the years 2015 - 2018.
|
|
|
Reprodukční výkonnost ovcí v ČR
Čudan, František
The aim of this thesis describe how we evaluate fertility and reproduction of sheep in performance testing in Czech republic, include evaluation of new traits of reproduction performance. In evaluation was traits ewe lambing rate, lambs per ewe, lambs per ewe lambing, lambs reared per ewe lambing, as a new trait weighed lambs (all in percents) and additionally lambs growth to one hundred days of life. All reproduction traits and weight of lambs in one hundred days of life have increasing tendency in Czech republic, although they are impacted by year and environment. On the percent of weighed lambs have strongest impact herd production system. The fertility and reproduction performance of sheep in performance testing in Czech republic is on the same level, like in the sheep breeding developed countries.
|
|
|
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).
|
|
|
Influence of The Chosen Factors on Fertility in Herd of Sumava Sheep
NOVÁKOVÁ, Iva
The goal of this Diploma thesis was an analysis of the chosen factors and their influence on sheep fertility in the herd of sumava sheep. This factors were presented through the age of sheep, sheep nutrition and stress influence on the sheep fertility. For this purpose it was chosen the sumava sheep farming in herd Michlova Hut. At first this herd was introduced, than statistically described in terms of sheep fertility and in the next part there was analysis of the chosen factors. Based on these results the conclusions and the basic breeder recommendation to breeder community were deduced. The main reason for choice this topic was a growing breeder´s interest in breeder´s economy and various possibilities of the increasing sheep fertility.
|
guest ::
