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- W1421823644 abstract "The strategies to optimize the meat production process are mainly aimed at maximizing growth performance, reducing in this way the days on feed needed to achieve the slaughtering time. These strategies can be grouped into three categories: develop a proper diet to the needs of different types of animals in the different stages of production as well as the objectives of the farmer, improve the farm environment and therefore animal welfare, improve animal health.This PhD dissertation discussed and evaluated strategies to optimize the productive performance of beef cattle improving animal health condition, reducing morbidity and assess the risk to plan preventive approaches.Work 1Respiratory Disease (BRD) is the main health problem in intensive beef cattle rearing. BRD is a multifactorial syndrome, and its etiopathogenesis is influenced by several predisposing and triggering factors. Management of the numerous risk factors is essential to maintaining appropriate preventative and therapeutic practices in the rearing of feedlot cattle. Because of the many stresses and the inevitable exposure to pathogens, incidences of BRD may be limited, but not avoided entirely. We propose a system for evaluating the potential risk of BRD for each new delivery of feedlot cattle, using a point attribution system that scores the principal risk factors of the production system, which is in turn able to judge the susceptibility of the animals to respiratory disease. The comprehensive risk assessment begins with an assessment of subject inherent risk in relation to weight, sex, race, transport length, transportation shrink, and the management practices of the breeding farm, which can be exacerbated or reduced by the management practices and structures present at the fattening facility. The analysis of risk allows for the focused management of each newly received lot of cattle in relation to its probable incidence and severity of BRD, providing the basic conditions for effective prevention and management of respiratory disease in the rearing of fattening cattle. Analysis of the data generated by the risk assessment system allows the quantification of the impact of each risk factor on the farm balance sheet, highlighting the cost-effectiveness of changes to management practices and investments in structural equipment.Work 2Lameness is one of the main health and economic issues concerning not only dairy but even beef cattle production system. Lameness is a clinical condition in case of locomotor apparatus diseases (LAD) and is characterized by multiple triggering (microbial, mechanical, nutritional, and genetic) and predisposing factors (subjective and environmental). The aim of this work was to review the lameness causes and risk factors of beef cattle reared in the intensive system and in particular in the Italian situation. The results of the surveys proposed, show that in Italian intensive beef cattle rearing, LAD is an important problem characterized by variable incidence and different risk factors. Heavy Charolaise bullocks are…" @default.
- W1421823644 created "2016-06-24" @default.
- W1421823644 creator A5029674763 @default.
- W1421823644 date "2014-02-27" @default.
- W1421823644 modified "2023-09-25" @default.
- W1421823644 title "STRATEGIES TO OPTIMIZE THE PRODUCTIVE PERFORMANCE OF BEEF CATTLE" @default.
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