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Digestibility and apparent mineral utilization by Arabian geldings fed alfalfa, tall fescue, and Caucasian bluestem /Crozier, Jennifer Anderson, January 1994 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1994. / Vita. Abstract. Includes bibliographical references (leaves 70-80). Also available via the Internet.
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Cerebellar disease in the Arabian horseBeatty, Margaret Turner. January 1984 (has links)
Call number: LD2668 .T4 1984 B423 / Master of Science / Diagnostic Medicine/Pathobiology
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Estrutura populacional e diversidade genética da raça árabe no Brasil / Population structure and genetic diversity on arabian horse in BrazilLeal, Luciano Da Rosa 27 October 2015 (has links)
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Previous issue date: 2015-10-27 / Reconhecida como uma das raças equinas mais antigas e influentes, o cavalo Árabe tem sua origem indefinida e supostamente heterogênea, a partir dos resultados de estudos de DNA-mitocondrial, que apontaram importante diversidade genética. Considerando o contexto dos desafios ecológicos a que as espécies são submetidas, tais como competição, predação, patologias e outros, a diversidade genética é fundamental na sua adaptação e evolução. Sua avaliação dentro da população é necessária durante a implementação do programa de seleção para estabelecer uma gestão apropriada do estoque genético, sendo determinada pelo tamanho da população base, mas também pelas estratégias de acasalamento. A análise genética de uma população pode ser levada a termo utilizando-se informação genealógica ou molecular. No caso do presente estudo, seu objetivo foi avaliar a diversidade genética do cavalo Árabe no Brasil, através das informações genealógicas contidas do Stud Book Brasileiro do Cavalo Árabe. Foram utilizados os dados de 54506 animais, cuja consistência de seus pedigrees foi avaliada pelo programa Breed Mate Pedigree Software® e os parâmetros populacionais determinados pela análise com o programa Poprep. A idade média dos machos e fêmeas em reprodução foi, respectivamente, 9,8 e 9,0 anos. A rotatividade de éguas em reprodução pode ser considerada alta (59,02%) e o intervalo médio de gerações ao longo do tempo considerado foi de 9,1 anos. Para a análise da endogamia foram definidas 11 classes com intervalos de 5%, onde 4,32% da população correspondeu a níveis acima dos 10%. A média F de endogamia encontrada para a população foi de 1,98%, considerando-se os dados de ancestrais desde 1808, e 2,90%, considerando-se os dados a partir de 1964, quando da criação do Stud Book Brasileiro do cavalo Árabe. Estes resultados são inferiores a alguns encontrados para populações de cavalos Árabes na Europa, observando-se ampla diversidade genética populacional, podendo estar relacionados ao considerável tamanho da população, ao fluxo gênico de um grande número de importações de animais e à ausência de gargalos genéticos importantes. Todavia, a elevada proporção de animais endogâmicos na população e o aumento das médias de endogamia nas últimas duas décadas, sugerem ajustes de seleção, no sentido de prevenir perdas de diversidade genética no futuro. / Recognized as one of the oldest and most influential horse breeds, the Arabian horse has an undefined and, supposedly heterogeneous origin, from the study results of mitochondrial-DNA, which indicate that significant genetic diversity. Considering the context of the ecological challenges that species are submitted, such as competition, predation, disease and others, genetic diversity is crucial in adaptation and evolution. Evaluation within the population is necessary for the implementation of the screening program to establish a proper management of the genetic stock, being determined by the size of the base population, but also for mating strategies. Genetic analysis of a population may be brought to completion by using family or molecular information. In the present study, its purpose was to evaluate the Arabian horse genetic diversity in Brazil, through the genealogical information in the Stud Book Brazilian Arabian Horse. The data of 54,506 animals were used, whose consistency was assessed by their pedigrees Breed Mate Pedigree Software® program and population parameters determined by analysis with Poprep program. The average age of males and females in reproduction was respectively 9.8 and 9.0 years. The turnover of mares in breeding can be considered high (59.02%) and the average generation interval over time considered was 9.1 years. For the analysis of inbreeding 11 classes were defined with 5% intervals where 4.32% of the population corresponded to levels above 10%. The average F of inbreeding found for the population was 1.98%, considering the data ancestors since 1808, and 2.90%, considering the data from 1964, when the creation of the Brazilian Stud Book of Arabian horse. These results are lower than those found in populations of Arabian horses in Europe, observing large population genetic diversity and may be related to the large size of the population, the gene flow of a large number of animal imports and the absence of important genetic bottlenecks. However, the high proportion of inbred animals in the population and the increase in mean inbreeding in the past two decades, suggest selection of adjustments, in order to prevent loss of genetic diversity in the future.
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Show Success: A comparison of three riding styles as performed at the United States Arabian National Championships from 1986-2008Musser, Katherine Ann January 2010 (has links)
No description available.
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Digestibility and apparent mineral utilization by Arabian geldings fed alfalfa, tall fescue, and Caucasian bluestemCrozier, Jennifer Anderson 10 November 2009 (has links)
Three palatability and digestion trials were conducted with six Arabian geldings fed alfalfa (Medicago sativa L.), endophyte-free tall fescue (Festuca arundinacea Schreb.), and Caucasian bluestem (Bothriochloa caucasica (Trin.) C.E. Hubbard) as hay to determine nutritional value of the hays for horses at maintenance in a Latin Square designed experiment. Alfalfa had higher (P < .01) dry matter digestibility, and voluntary intake, compared to grasses. Tall fescue and Caucasian bluestem did not differ in dry matter digestibility and voluntary intake. Feeding alfalfa resulted in higher (P < .05) intake and digestibility of CP and higher (P < .05) apparent absorption of Ca, P, K, and S, compared to the grass hays. Tall fescue was higher (P < .01) in CP concentration and digestibility, total nonstructural carbohydrate concentration, and apparent absorption of Mg and S, compared to Caucasian bluestem. Caucasian bluestem was higher (P < .05) in Zn compared to tall fescue. At the end of the palatability trials, horses fed alfalfa had higher serum concentrations of blood urea nitrogen, vitamin A, and serum P, S, and Cu, compared to horses fed grasses. Serum Zn was higher (P < .05) and Se tended to be higher (P < .06) in horses fed Caucasian bluestem, compared to tall fescue. All forages were below the recommended dietary Cu and P concentration but only Caucasian bluestem resulted in negative apparent P absorption. Caucasian bluestem would meet most nutrient requirements for horses at maintenance. Alfalfa supplied more crude protein, Ca, Mg, and K than was required by horses at maintenance. / Master of Science
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Genetic Diversity and Population Structure of the Arabian Horse Populations from Syria and other CountriesKhanshour, Anas M 16 December 2013 (has links)
Humans and horses weaved together wonderful stories of adventure and generosity. As a part of human history and civilization, Arabian horses ignite imagination throughout the world. Populations of this breed exist in many countries. Here I explored different populations of Arabians representing Middle Eastern and Western populations. The main two aims of this study were to provide the genetic diversity description of Arabians from different origins and to examine the traditional classification system of the breed. A third aim was to tackle the distribution pattern of the genetic variability within the genome to show whether there are differences in relative variability of different types of markers.
First, I analyzed the genetic structure of 537Arabian horses from seven populations by using microsatellites. The results consistently showed higher levels of diversity within the Middle Eastern populations compared to the Western populations. All American-Arabians showed differentiation from Middle Eastern populations.
Second, I sequenced the whole mtDNA D-loop of 251 Arabian horses. The whole D-loop sequence was more informative than using just the HVR1. Native populations from the Middle East, such as Syrian, represented a hot spot of genetic diversity. Most importantly, there was no evidence that the Arabian horse breed has clear subdivisions depending on the traditional maternal based strain classification system.
Third, I tested the heterozygosity distribution pattern along the genome of 22 Peruvian Paso horses using 232 microsatellites and Single Nucleotide Polymorphisms (SNPs). The pattern of genetic diversity was completely different between these two markers where no correlation was found. Runs of homozygosity test of SNPs and associated microsatellites noticeably showed that all of associated microsatellites loci were homozygous in the matched case.
The findings of this study will help in understanding the evolutionary history and developing breeding and conservation programs of horses. This study provided databases including parentage testing system and maternal lineages that will help to recover the Syrian Arabian population after the armed conflict started in Syria in 2011. The results here can be applied not only to horses, but also to other animal species with similar criteria.
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