Thesis (M. Phil.)--University of Hong Kong, 1999. / Includes bibliographical references (leaves 88-108).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1954. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves [82-85]).

Thesis (Ph. D.)--University of Wisconsin--Madison, 1951. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 55-58).

The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on September 25, 2009). Thesis advisor: Dr. Luis Polo Parada. Includes bibliographical references.

Thesis (M. Phil.)--University of Hong Kong, 2005. / Title proper from title frame. Also available in printed format.

Thesis (Ph. D.)--The University of Wisconsin-Madison, 1975. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliography.

Thesis (Ph. D.)--West Virginia University, 2006. / Title from document title page. Document formatted into pages; contains vii, 105 p. : ill. Vita. Includes abstract. Includes bibliographical references.

Made available in DSpace on 2014-06-11T19:27:58Z (GMT). No. of bitstreams: 0 Previous issue date: 2005-12-08Bitstream added on 2014-06-13T18:48:12Z : No. of bitstreams: 1 okamoto_as_me_botfmvz.pdf: 447893 bytes, checksum: c07517a80a90c273e0c642d883569d57 (MD5) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Este estudo foi conduzido com o objetivo de avaliar a capacidade protetora de Lactobacillus spp. em frangos de corte desafiados com Salmonella Enteritidis, utilizando-o como tratamento no primeiro dia de idade, e posterior desafio com Salmonella Enteritidis fagotipo 04, observando-se possíveis alterações histopatológicas e imunológicas na mucosa intestinal, como o comprimento das vilosidades, a produção de imunoglobulina A e o peso corporal. Foi observada maior eficácia do tratamento com Lactobacillus spp. somente quando as aves foram desafiadas com Salmonella Enteritidis aos 21 dias de idade. O comprimento das vilosidades intestinais apresentou-se reduzido após os desafios, mostrando posterior regeneração. Com o desafio de Salmonella Enteritidis ocorrendo no terceiro dia de idade, verificou-se que aves jovens possuem maior sensibilidade à infecção. / This study was driven with the objective of evaluate the protective capacity of Lactobacillus spp. in chickens challenged with Salmonella Enteritidis, utilizing as handling on one-day old chicks and posterior challenge with Salmonella Enteritidis phagotype 04, observing possible histopathological and immunological alterations in the intestinal mucosa, like the length of the villus, the production of immunoglobulin A and body weight. Greater efficacy in the treatment with Lactobacillus ssp. was observed only when the chicks were challenged with Salmonella Enteritidis at 21 days old. The length of the intestinal villus always diminished after challenge, regenerating later. After the first challenge of with Salmonella Enteritidis (at three-days old), we verified that young chicks possess a greater sensibility to infection.

Made available in DSpace on 2014-06-11T19:30:16Z (GMT). No. of bitstreams: 0 Previous issue date: 2012-05-11Bitstream added on 2014-06-13T19:18:48Z : No. of bitstreams: 1 fernandes_bcs_me_botfmvz.pdf: 296743 bytes, checksum: 816b2969cb20cde8f115860eef8546af (MD5) / Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) / Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) / Universidade Estadual Paulista (UNESP) / Com objetivo de avaliar a integridade intestinal, por meio da microscopia óptica e eletrônica de varredura (MEV), e o desempenho de frangos de corte suplementados com aditivos alternativos aos antimicrobianos foram alojados 1080 pintos machos, com densidade populacional de 12 aves/m². O delineamento experimental foi o inteiramente casualizado, com seis tratamentos e seis repetições de 30 aves cada. Os tratamentos foram: dieta basal (controle); dieta basal mais antimicrobiano; dieta basal mais probiótico; dieta basal mais prebiótico; dieta basal mais simbiótico e dieta basal mais ácidos orgânicos. Foram avaliados o ganho de peso, consumo de ração, conversão alimentar e viabilidade aos 10, 21, 35 e 42 dias de idade. Aos 42 dias, 72 aves (duas aves por repetição de cada tratamento) foram pesadas individualmente e eutanasiadas. Para avaliação da morfometria das diferentes túnicas da parede intestinal foram coletados segmentos do intestino delgado e cecos de duas aves por repetição e para as análises da integridade intestinal (MEV) foram coletados os mesmos segmentos de duas aves por tratamento. No período inicial de criação as aves suplementadas com os aditivos alternativos mostraram ganho de peso similar àquelas tratadas com antimicrobiano, porém não diferiram do grupo controle. A conversão alimentar das aves que receberam aditivos alternativos no intervalo de 1 a 10 dias foi melhor que o controle, porém para os demais períodos de criação a conversão alimentar foi similar ao antimicrobiano sem, contudo diferir do controle. A morfometria das diferentes túnicas da parede intestinal das aves não foi influenciada pelos tratamentos. No período total de criação, os aditivos alternativos avaliados não melhoraram a integridade intestinal, bem como o desempenho dos frangos de corte / In order to evaluate the intestinal integrity, through optical microscopy and scanning electronic (SE), and the performance of broilers receiving diets supplemented with additives instead of antimicrobial growth promoters 1080 male chicks were allocated in a population density of 12 birds / m2. The experimental design was a completely randomized arrangement with six treatments and six replications of thirty birds each. The treatments were: basal diet (control); basal diet + antimicrobial growth promoter (AGP); basal diet + probiotic; basal diet + prebiotic; basal diet + symbiotic; and basal diet + organic acids. The weight gain, feed intake, feed:gain ratio and the viability at days 10, 21, 35 and 42 were evaluated. At 42th day, 72 birds (two birds per replicate of each treatment) were individually weighted and sacrificed. For morphometric evaluation of different tunics of intestinal wall, small intestine and caecum fragments from 2 birds per repetition were collected and for intestinal integrity analysis (SE) the same fragments were collected from 2 birds per treatment. At the first period of breeding alternative additives-fed chickens showed similar weight gain compared to AGP-fed chickens, but they did not differ from control group. The feed:gain of alternative additives-fed chickens from 1st to 10th days was better than control group, but for the others periods the feed:gain ratio was similar to AGP-fed birds, without differing from control group. The morphometric of different tunics of intestinal wall was not influenced by treatments. The alternative additives did not improve the intestinal integrity, neither the broiler performance during the whole breeding period

Effects of application of Bioalginate series preparations (hydrolysis products from Ascophyllum nodosum kelp) to monitored parameters of chick broilers and their meet was experimentally verified. The preparation testing is carried out in two stages. The Biopolym Granulát preparation was tested in the first stage. The preparation was applied by mixing into granulated feeding mixture during its production process. Final results of this stage did not show positive effects of the preparation in question by this form of application. The second testing stage focused to testing of the Biopolym FZT preparation supplied to animals by charging into feeding water. This form of application revealed positive effect of the preparation to decrease of the ammoniac content in the stable atmosphere and positive impact to the health condition of stabled animals. Lower contend of nitrogenous substances on original meat dry mass has been statistically documented. Higher content of nitrogenous-free extractive substances in original meat dry mass has been evidenced.