2 resultados para . Lactation

em Repositório Científico da Universidade de Évora - Portugal


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The present trail aimed to study the effect of crossbreeding between Alentejano (AL) and Bsaro (BI) swine breeds (Ribatejano pig) on some reproductive and productive traits. Nine AL gilts and sows and six BI gilts were crossed with BI and AL boars, respectively. Mating and farrowing dates, prolificacy and litter size at 28d were registered for all sows. The pregnancy length of AL sows was shorter (1110.4d vs 113.70.5d; p=0.002) than the observed on BI females. The BI gilts presented higher prolificacy rate than AL on both total born (11.01.0 vs 6.70.8; P=0.004) and born alive piglets (10.01.0 vs 6.70.8; p=0.026). The mortality rate was similar in both genotypes (p=0.255) being on average 12%, therefore at 28d after farrowing the litter size remained higher in BI sows (8.50.8 vs 6.10.6; p= 0.032). A subset of each genotype (4 gilts) was supervised during farrowing and lactation (until 28d) and piglets were weighed at birth, 24h and 28d of live. Farrowing length was not significantly different (p=0.253) between genotypes, averaging 9722 min. When compared to ALBI (AL x BI) piglets, the BIAL (BI x AL) piglets were heavier at birth (140246g vs 120936g; p=0.002). Colostrum intake of piglets per kg of birth weight on the first 24h of life was similar between genotypes (p=0.735) being 28915g for ALBI and 28119g for BIAL piglets. The growth rate of piglets from birth to 28d and piglet weight at 28d was not different between genotypes (p=0.161 and p=0.091) averaging 1956g and 6761181g, respectively. Litter weight at 28d tended (P=0.06) to be higher on ALBI litters (56.64.0kg) than BIAL litters (43.24.0kg). This results obtained within the frame of Treasure project* are, at our knowledge, the first data of these crossbred piglets and could be used in future as reference for further studies and also for farmers that may try these cross on a commercial basis.

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O presente relatrio foi elaborado com o objetivo de descrever as atividades desenvolvidas no mbito do estgio curricular do Mestrado Integrado em Medicina Veterinria pela Universidade de vora. Numa primeira parte apresentada a casustica acompanhada ao longo do estgio, com referncia mais pormenorizada a alguns dos casos clnicos acompanhados nas diversas reas de interveno da clnica de espcies pecuarias. A segunda parte deste relatrio composta por uma breve reviso bibliogrfica sobre o tema Cetose em bovinos. Termina com um estudo que tem como objetivo principal avaliar a relao entre a ocorrncia de cetose e os valores do ndice de condio corporal no pr-parto e nas primeiras semanas de lactao. Os resultados no evidenciaram qualquer associao estatisticamente significativa entre os valores do ndicie de condio corporal e a prevalncia de cetose; Clinical medical and surgery in livestock species Abstract: This report was prepared in order to describe the activities developed during the integrated internship of the master's degree in Veterinary Medicine from the University of Evora. The first part describes the casuistics followed along the traineeship with more detailed reference to some of the clinical cases assisted in different areas of intervention of clinic livestock species. The second part of this report consists of a brief literature review on the topic "ketosis in cattle". It ends with a study that aims to evaluate the relationship between the occurrence of ketosis and the values of body condition score in antepartum and during the first weeks of lactation. The results did not show any statistically significant association between the values of body condition score and the prevalence of ketosis.