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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Vliv reprodukce na ekonomický výsledek chovu skotu / The influence of reproduction on economic efficiency of cattle breeding

ŠANDEROVÁ, Pavla January 2007 (has links)
In presented thesis the chosen parameters of reproduction {--} days to first service, days open, calving interval, insemination index - were evaluated in dairy cattle. There were 222 of dairy cows observed (53 Czech Pied and 169 Holstein cows). The results of reproduction were evaluated as unsatisfactory. Length of calving interval overreached recommended 400 days in 56,25 % of Holstein and in 33,33% of Czech Pied cows. Also the mean value of insemination index 2,39 exceeds the optimum of 1,8-2,0.
2

Analýza úrovně reprodukčních vlastností prasat ve vybraném chovu / Analysis level of reproductive qualities of pigs in the chosen breeding.

ŽIVČÁKOVÁ, Jana January 2012 (has links)
The objective of the thesis was the analysis of reproductive traits of sows. Data from the years 2009?2011 were obtained in the company conducting production herds. The highest number of piglets born alive per one sow a year (26.8) was reached in 2011. The highest number of weaned piglets (25.6) per a sow was obtained in 2010. By shortening farrowing index in a monitored three-year period the number of births increased from 2.29 to 2.35. We found out that sows covered at older age gave birth to more piglets born alive. Concerning total number born piglets the difference between sows covered in more than 246 days and sows covered in the age interval of 225?246 days was 0.14 piglets, or, as the case may be, with sows covered in 203?224 days the difference was 0.18 piglets. Sows covered in less than 203 days gave birth only to 10.67 total number born piglets. Most total number born piglets were found at the sixth litter (13.14), followed by the fourth litter. The fourth litter brought most alive-born piglets (12.58) and differed from the third litter only slightly. Most piglets survived at the third litter (11.61). The relation between all piglets and those alive-born was statistically highly conclusive 0.859+++. The highest number of total number born piglets was reached with sows which were covered 5 (12.84) or 6 days (12.79) after weaning.
3

STUDIUM VLIVŮ PŮSOBÍCÍCH V REPRODUKČNÍM PROCESU U PRASNIC SE ZVLÁŠTNÍM ZŘETELEM K PORODNÍMU OBDOBÍ

ZIMOLOVÁ, Barbora January 2016 (has links)
The aim of the thesis was to reveal reserves for improving the piglets breeding and to reduce losses by death. The highest number of all (13.52 pcs) and live born (11.88 pcs) piglets were achieved in gilts embedded in more than 247 days of age. Gilts covered within 224 days of age showed the lowest average number of piglets born (13.13 pcs). Statistically, however, has not been demonstrated difference (p > 0.05) between age groups of gilts during the first recess in the number of piglets born. Effect of order of litter on litter size was found to be statistically highly significant (p < 0.01), especially between the first and third parturition. The highest number of born piglets was found on the third litter (14.95 pcs) and lowest in the first litter (13.3 pcs). Most live piglets born were at the second litter (14.03 pcs) and least live born piglets were found on the 5th and higher litter (11.57 pcs). Among the number of piglets born alive in the individual litters was also evaluated statistically highly significant difference (p < 0.01). In assessing the impact on the duration of labor litter size was found to be a higher number of piglets born at night on average by 0.33 piglet more, but the number of piglets born alive was found higher in childbirth during the day (childbirth with assist). During statistical evaluation was not demonstrabled difference between the number of all even in the case of piglets born alive in viewpoint of the time of birth. From the perspective of the impact of the length of the interval from weaning to sows on litter size was found to be a higher number of all (14.83 pcs) and live (12.79 pcs) piglets born of sows recessed for more than 6 days after weaning. From the viewpoint of the impact sequence of litter for childbirth was detected statistically detectable difference (p > 0.05). In each of the litters was observed an average of 75 % births through the day. When evaluating the number of live births, depending on the number of piglets, born piglets showed a statistically highly significant relationship (p < 0.01) with high tightness on dependence (R = 0.83). Between the number of all born piglets and born alive was found a direct correlation.
4

Crescimento, desempenho produtivo e reprodutivo de vacas Holandês comparadas às mestiças Holandês x Simental / Growth, productive and reproductive performance of Holstein cows compared to crossbred Holstein x Simmental cows

Knob, Deise Aline 25 June 2015 (has links)
Made available in DSpace on 2016-12-08T16:24:22Z (GMT). No. of bitstreams: 1 PGCA15MA174.pdf: 1125115 bytes, checksum: debf2ea0252ff58d406adab80ac46300 (MD5) Previous issue date: 2015-06-25 / Improvement of animal nutrition and management, together with genetic selection for milk yeld, increased the productivity of the herds, especially Holstein cows. On the other hand, characteristics related to fertility, health and longevity were disadvantaged The aim was to compare the development, milk yeld and composition, the health of the mammary gland, the body condition score (BCS), reproductive performance and longevity of crossbred Holstein x Simmental cows with Holstein cows. To obtain the data set two farms were used, one in Bom Retiro in SC and another in Carambeí in PR. For growth evaluation, weight gain of the animals were evaluated monthly. For production and udder health data from the official Dairy Herds Improvement Programs of the farm were used. BCS and body weight estimation were made on the farm with an interval between 60 and 90 days within one year. Information concerning the date of birth, parity date, date and number of inseminations, were obtained from the management software of the farms, generating information regarding the calving interval, days between calving to first service, conception rate, age at first calving. In one of the farms, calving were monitoring to quantify the calving difficulty, in the same farm, information of culling were obtained to determine the survival rate of cows. Data were analyzed by statistical package of SAS, using the MIXED and GENMOD procedures. For growth curve, production and composition of milk, (BCS) and body weight nonlinear regression was used, using the NLIN procedure of SAS and the curves of Gompertz (growth) and Wood (production and composition) were used because of having the lowest mean square. Holstein x Simmental crossbred cows produced more milk 31,8 x 30,4 kg/day (P < 0,05), with higher content of lactose and protein, with no difference for fat content. Holstein cows had higher somatic cell score (SCS) 4.49 x 2.93 (P <0.0001) compared to crossbreed cows. Holstein x Simmental crossbred cows had better BCS during lactation 3.65 x 2.94 (P <0.0001) with no difference in body weight in relation to Holstein cows. For growth of calves and heifers there was no difference between the genetic groups. Crossbred cows Holstein x Simmental had better reproductive performance than the Holstein cows, characterized by lower calving interval (381 x 445 days), higher conception rate (37.31 x 33, 64%) and shorter interval calving to first service (65.6 x 89.3 days). Crossbred cows Holstein x Simmental had higher survival rate than Holstein cows (83 x 92 In conclusion, crossbred cows Holstein x Simmental produce more milk with higher content of lactose and protein, have less ECS and greater BCS without difference for growing of heifers and body weight in adult age. Crossbred cows still have better reproductive performance and have a higher survival rate than the Holstein cows / Melhorias na nutrição e no manejo dos rebanhos bem como a seleção genética para a produção de leite aumentaram a produtividade dos animais. Em contrapartida, características relacionadas a fertilidade, sanidade e longevidade foram prejudicadas. O objetivo foi comparar o desenvolvimento, a produção e composição do leite, a sanidade da glândula mamária, o escore de condição corporal o desempenho reprodutivo e a longevidade de vacas mestiças Holandês x Simental em relação as vacas puras Holandês. Foram utilizadas duas propriedades, uma localizada no município de Bom Retiro em SC e outra em Carambeí no PR. Para avaliação de crescimento o ganho de peso dos animais foi avaliado mensalmente. Para obter dados produtivos e de sanidade de úbere foram utilizados dados do controle leiteiro oficial da propriedade. As avaliações de escore e peso vivo foram realizadas na propriedade com intervalo entre 60 e 90 dias no período de um ano, informações estas obtidas em uma das propriedades. As informações referentes a data de nascimento, data de parto, data e número de coberturas, foram obtidas junto aos software de gerenciamento de ambas as propriedades, gerando informações referentes ao intervalo entre partos (IEP), período parto primeiro serviço, taxa de concepção, idade ao primeiro parto. Em uma das propriedades foi feito o acompanhamento dos partos para quantificar a dificuldade de parto, da mesma forma, foram obtidas informações referentes ao descarte de animais para determinar a taxa de permanência no rebanho das vacas. Os dados foram analisados pelo pacote estatístico SAS, utilizando-se os procedimentos MIXED e GENMOD Para curva de crescimento, de produção e composição do leite bem como escore de condição corporal (ECC) e peso vivo foi utilizada a técnica de regressão não linear, do pacote estatístico SAS sendo que foram utilizadas as curvas de Gompertz (crescimento) e de Wood (produção e composição) por apresentarem o menor quadrado médio do erro. Vacas mestiças Holandês x Simental produziram mais leite 31,8 x 30,4 ( P < 0,05), com maior teor de lactose e proteína, sem diferença para teor de gordura. Vacas Holandês obtiveram maior escore de células somáticas (ECS) 4,49 x 2,93 (P < 0,0001) em relação as mestiças. Vacas mestiças Holandês x Simental obtiveram melhor ECC durante a lactação 3,65 x 2,94 (P < 0,0001) sem diferença para peso vivo em relação as vacas Holandês. Para crescimento de bezerras e novilhas não houve diferença entre os grupamentos genéticos. Vacas mestiças Holandês x Simental obtiveram melhor desempenho reprodutivo em relação as vacas puras, caracterizado através do menor IEP (381 x 445 dias), maior taxa de concepção (37,31 x 33, 64 %) bem como menor intervalo parto primeiro serviço (65,6 x 89,3 dias). Vacas mestiças Holandês x Simental apresentaram maior taxa de permanência no rebanho em relação as vacas puras (83 x 92 %). Conclui-se que vacas mestiças produzem mais leite, com maior teor de lactose e proteína, possuem menos ECS e maior ECC sem diferença para crescimento de novilhas e peso vivo na idade adulta. Apresentam ainda melhor desempenho reprodutivo e maior taxa de permanência no rebanho em relação as vacas puras Holandês
5

Evangelistic Performance in New Zealand: The Word and What is Not Said

Bond, Greta Jane January 2008 (has links)
In 1518, Martin Luther is reputed to have nailed his 95 theses to the door of the Castle Church at Wittenberg, an act that sparked the Protestant Reformation. Luther sought change in the Catholic Church: a return to an unmediated relationship with God based on a closer understanding of the Word. Since then, Protestant evangelism has been a force for social change: and this is particularly true in New Zealand, where evangelism has gone hand in hand with the colonisation of the country. This thesis proposes that it is not, in fact, the literal understanding of the Word that gives these services meaning, and that such an understanding is problematic and perhaps even impossible: the Word is always a translation. Instead, it is through what is not said - the performative aspects of evangelistic services, including the use of space, the actions of the evangelist, and pre-existing cultural “horizons of expectation” - that meanings are produced. Taking as material Samuel Marsden’s first service in New Zealand in 1814, in which the Word was preached in English to a congregation who primarily spoke only Maori, the more contemporary example of televangelist Benny Hinn, who performs miracles to television cameras, and the religious and political performances of Destiny Church’s Brian Tamaki, this thesis uses the tools of performance studies to undertake an ethnographic study of evangelistic services. This brings into focus the ways in which evangelists may create congregations and produce meanings in their services through different modes of performance and the ways in which these ulterior meanings impact, and have impacted, on New Zealand society.

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