Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-09-05T20:30:53Z No. of bitstreams: 1 2016 - Ana Carla Chaves Dias.pdf: 1946070 bytes, checksum: 4954b82fc85ca253a40546487884c3bb (MD5) / Made available in DSpace on 2017-09-05T20:31:07Z (GMT). No. of bitstreams: 1 2016 - Ana Carla Chaves Dias.pdf: 1946070 bytes, checksum: 4954b82fc85ca253a40546487884c3bb (MD5) Previous issue date: 2016-09-30 / CAPES / The aim of this research was to evaluate the effects of prebiotic fructo-oligosaccharide (FOS) on the performance of suckling foals, and fecal pH and the physical and chemical characteristics of faeces from foals.. The experiment was carried out at the Cabral's Haras, farm located in Rio Claro, Rio de Janeiro. Sixteen Mangalarga Marchador foals were used in a completely randomized designwith two treatments and eight repetitions (animals). The treatments were: Treatment I - suplly the FOS once a day orally; Treatment II (control) - the animals received aqueous solution, orally, without FOS additive. The trial period was 75 days of duration, starting supplementation at birth. From birth to the 30th day, daily stool samples were collected directly from rectum. The 30th day onwards, samples were collected every 4 days until the 75th day of age. Immediately after the faeces samples the consistency and its color was written down in a collection form . The pH was mensured from samples previously diluted with equal amounts of distilled water using a digital potentiometer. For chemical analysis the samples were homogenized in weekly composite samples and it was performed chemical analyzes In the performance parameters foals were weighed and it was performed morphometric measurements of height and perimeter. The results were submitted to analysis of variance in a split plot scheme and means were compared by the Student Newman Keuls test, at5% probability. The values of fecal characteristics were compared using the Wilcoxon test in the analysis of the treatment and compared by Kruskal-Wallis test in the analysis of the collection times. There were no significant effects (p <0.05) of supplementation and interaction age versus supplementation for all variables. The average daily gain weight was 0.63 kg during the trial period. The morphometric variables showed average growth of 17.8, 18.7, and 27.5 cm in height at the withers, hip height, body length and chest girth, respectively, from birth to 75 days old. Growth percentage of 31.1, 53.8, 15.6, 22.4, 12 and 12.3% were observed for height and width of the side, the empty substernal height, forearm girth, knee girth and shin girth, respectively . The use of prebiotic fructooligosaccharide did not affect the faecal pH, with average values of 7.22. There was no significant difference (P <0.05) in the physical and chemical characteristics of the stool. The use of prebiotic fructooligosaccharides does not influence the performance of newborn foals to 75 days of age. Further investigation should be conducted to evaluate the responses obtained through fecal parameters and their relationship as an indicator of gastrointestinal health. It prove to be safe in the dose used, it does not promote diarrhea or other gastrointestinal disorders in infants foals. / O objetivo desse estudo foi avaliar os efeitos do prebi?tico Frutooligossacar?deo (FOS) no desempenho dos potros lactentes bem como no pH fecal e nas caracter?sticas f?sicas e qu?micas das fezes dos potros. O experimento foi realizado no Haras do Cabral em Rio Claro, RJ. Foram utilizados 16 potros Mangalarga Marchador em delineamento experimental inteiramente casualizado, com dois tratamentos e oito repeti??es (animais). Tratamento I - fornecimento uma vez ao dia, via oral, do aditivo FOS e o Tratamento II (controle) ? os animais recebiam solu??o aquosa, via oral, sem o aditivo FOS. O per?odo experimental foi de 75 dias, iniciando a suplementa??o ao nascimento. Amostras di?rias de fezes foram coletadas diretamente do reto do nascimento at? o 30o dia de idade. Do 30o dia em diante, as coletas ocorreram a cada 4 dias, at? os 75o dia de idade. Imediatamente ap?s a coleta anotou-se em uma ficha de coleta a consist?ncia e colora??o das amostras. O pH foi avaliado a partir das amostras previamente dilu?das em iguais quantidades de ?gua destilada atrav?s de um potenci?metro digital. Para an?lises qu?micas as amostras foram homogeneizadas em amostras compostas semanais e realizadas an?lises bromatol?gicas. O desempenho dos potros foi avaliado atrav?s do peso vivo e por meio de medidas morfom?tricas lineares e de per?metros. Os resultados foram submetidos ? an?lise de vari?ncia em esquema de parcelas subdivididas e, as m?dias comparadas pelo teste Student Newman Keuls, a 5% de probabilidade. Os valores da caracteriza??o fecal foram comparados pelo teste de Wilcoxon na an?lise entre os tratamentos e, comparados pelo teste de Kruskal-Wallis na an?lise entre os tempos de coleta. N?o foram observados efeitos significativos (p<0,05) na suplementa??o e intera??o idade versus suplementa??o para todas as vari?veis analisadas. O ganho de peso m?dio di?rio foi de 0,63 kg durante o per?odo experimental. As vari?veis morfom?tricas apresentaram crescimento m?dios de 17,8, 18,7, e 27,5 cm para altura da cernelha, altura da garupa, comprimento do corpo e per?metro tor?cico, respectivamente, do nascimento aos 75 dias de idade. Percentuais de crescimento m?dio de 31,1, 53,8, 15,6, 22,4, 12 e 12,3% foram observados para altura e largura do costado, altura do vazio subesternal, per?metros do antebra?o, joelho e canela, respectivamente. O uso do prebi?tico frutooligossacar?deo n?o influenciou no pH fecal, apresentando valores m?dios de 7,22. N?o houve diferen?a significativa (P<0,05) nas caracter?sticas f?sicas e qu?micas das fezes. O uso do prebi?tico frutooligossacar?deo n?o influencia no desempenho de potros lactentes do nascimento aos 75 dias de idade. Maiores investiga??es devem ser realizadas para avaliar as respostas obtidas atrav?s de par?metros fecais e sua rela??o como indicador da sa?de gastrointestinal. A dose utilizada de frutooligossacar?deo n?o promove diarr?ias e dist?rbios gastrointestinais em potros lactentes.