RESUMOO objetivo deste trabalho foi mensurar as perdas causadas pela condenação de órgãos suínos em matadouros sob fiscalização do serviço de inspeção municipal (SIM) em Santa Maria, RS durante 12 meses consecutivos. O estudo foi realizado através do levantamento de dados de matadouros do município de Santa Maria, Rio Grande do Sul, Brasil, junto ao SIM. Os dados registrados foram o número de animais abatidos, número de órgãos condenados e principais lesões que levaram as condenações, no período de outubro de 2010 a setembro de 2011. Durante o período de avaliação, 6.193 animais foram abatidos. Observou-se que 5.511 órgãos foram condenados, com destaque as condenações por lesões de aspiração de sangue (n = 1.231), migração larval (n = 991) e cisto renal (n = 807). A pesquisa revelou que anualmente R$ 11.955,66 é desperdiçado com condenação de órgãos. A migração larval no fígado foi a principal lesão que contribuiu para os prejuízos econômicos, com perdas de R$ 8.919,00. Para minimizar as perdas econômicas é necessário agir nos pontos críticos de condenação, o principal ponto observado no estudo foi o descarte de fígado por migração larval.Palavras-chave: fígado, subprodutos, lesões, migração, larval, prejuízo financeiro ABSTRACTThis study aimed to measure the economic losses caused by the condemnation of swine organs in municipal slaughterhouses under the supervision of the municipal inspection system (MIS) from the city of Santa Maria-RS during 12 months in a row. The study was conducted by collecting data from slaughterhouses in Santa Maria, Rio Grande do Sul, Brazil, in MIS. The registered data took into account the number of animals slaughtered, number of condemned organs and major lesions that led to condemnation from October 2010 to September 2011. During the evaluation period, 6,193 animals were slaughtered. It was found that 5,511 organs were condemned, mostly because of aspiration of blood (n = 1,231), larval migration in liver (n = 991), and renal cyst (n = 807). The survey revealed that R$ 11,955.66 is wasted annually in condemnation of organs. It is noteworthy that the main injury that contributed to the economic damage was larval migration in liver, which discard amount reached R$ 8,919.00. In order to reduce economic losses, it is necessary to do something against the critical points of condemnation, in which the main one observed in the study was the disposal of liver caused by larval migration.

ResumoO objetivo deste trabalho foi mensurar as perdas causadas pela condenação de vísceras bovinas em matadouros sob fiscalização do Serviço de Inspeção Municipal (SIM) em Santa Maria, RS, durante 12 meses consecutivos. O estudo foi realizado através do levantamento de dados de quatro matadouros do município de Santa Maria, Rio Grande do Sul, Brasil, junto ao SIM. Os dados registrados foram o número de animais abatidos, número de órgãos condenados e principais lesões que levaram as condenações, no período de outubro de 2010 a setembro de 2011. Durante o período de avaliação, 9.261 animais foram abatidos. Observouse a condenação de 8.167 órgãos, com destaque para as lesões de fasciolose, enfisema pulmonar, aspiração de sangue e telangiectasia. A pesquisa revelou uma perda anual de R$58.261,63 devido às condenações das vísceras. O fígado representou a víscera com maior quantidade de descarte e a principal lesão que contribuiu para os prejuízos econômicos foi causada pela Fasciola hepatica, cujo valor totalizou R$36.361,63. Para minimizar as perdas econômicas é necessário fazer uso do relatório de abate como um instrumento de diagnóstico da saúde do rebanho para controlar o parasito na propriedade rural.Palavras-chave: Fasciola hepatica, subprodutos, lesões, vísceras, prejuízo financeiro. AbstractThe aim of this study was to investigate the economic losses caused by cattle viscera condemnation in municipal slaughterhouses inspected in Santa Maria, -RS, Brazil, during 12 months. For this experiment were obtained data from four slaughterhouses in Santa Maria, Rio Grande do Sul. The collected data consisted of number of animals harvested, number of condemned viscera and major lesions that led to condemnation, from October 2010 to September 2011. During the evaluation period, 9,261 animals were slaughtered. It was found that 8,167 viscera were condemned. Most reported lesions were fascioliasis, telangiectasia lesions, pulmonary emphysema, and blood aspiration. The economic loss of the period due to viscera condemnation was R$ 58,261.63. Liver was the most condemned viscera in which Fasciola hepatica was the main reason resulting in a loss of R$ 36,361.63. In order to reduce economic losses, it is necessary control the parasite on farms, maintaining to use the slaughter report as a diagnostic tool to herd health.Keywords: economic losses, Fasciola hepatica, by-products, lesions, viscera. IntroduçãoNa cadeia produtiva de carne bovina, as vísceras são subprodutos importantes do ponto de vista econômico, pois agregam valor à produção ao representarem fontes proteicas alternativas para a população mundial em expansão. Sendo assim, provavelmente a produção de vísceras terá maior relevância no futuro (Chiba, 2005; Kale et al., 2011).Embora os cortes cárneos sejam as frações amplamente consumidas pela população, as vísceras também podem ser destinadas ao consumo humano in natura ou utilizadas como matéria-prima para fabricação de produtos processados (Toldrá et al., 2012). Além disso, deve-se destacar que estes subprodutos a...

ABSTRACT:The economic viability of feedlot Aberdeen Angus steers fed with diets composed of different concentrate levels (CL) in dry matter (25, 40, 55 or 70%) was estimated using Monte Carlo simulation combined with Spearman rank correlation, considering nine random input variables, as well as stochastic dominance (DOM) and sensitivity (SENS) analyses. For the financial indicator simulation, net present value (NPV), cash flow with indicators of performance, and the probability distribution of all cost and income items (from 2003 to 2014) were used. Latin hypercube sampling and a Mersenne Twister random number generator was employed for the simulation, which included 2000 interactions. The expected mean values ± standard deviation for NPV (USD/animal) were 44.94 ± 68.01, 44.50 ± 69.25, 15.39 ± 69.22 and 54.20 ± 71.58 for the diets containing 25, 40, 55 and 70% CL, respectively. The probability of NPV ≥ 0 was 76.8, 76.0, 57.9 and 78.1%, respectively, from the smallest to largest CL. The DOM analysis showed that 25 and 40% CL have similar probability curves, the 70% level dominated the remaining and all CL dominated 55%. According to SENS analysis, the items that most influenced the NPV were, in decreasing order, finished and feeder cattle price, initial and final weights, concentrate and roughage price, concentrate intake, minimum rate of attractiveness and roughage intake. Based on the simulation results, the 70% CL showed a higher NPV and greater likelihood of economic viability. The probabilistic simulation technique is an interesting tool for decision-making in investment projects with beef cattle feedlot, therefore, further studies in this line of research is recommended.

ABSTRACT:The objective of this study was to evaluate the use of stochastic simulations in decision-making regarding the economic viability of feedlot finishing Charolais steers slaughtered at different weights (420, 460 or 500 kg live weight). Monte Carlo simulation was used, with or without Spearman correlation, to evaluate the risk associated with random input variables, and to compare the curves of pairs of slaughter weights by stochastic dominance. The financial indicator net present value (NPV) was the output variable. The expected means and standard deviations for the slaughter weights of 420, 460 and 500 kg were USD 28.77 ± 53.90; USD 36.27 ± 57.22 and USD 54.60 ± 66.74 for simulation with correlation, and USD 28.75 ± 96.15; USD 36.17 ± 103.11 and USD 54.53 ± 111.96 for simulation without correlation. The simulations without correlation were found to overestimate the standard deviation by 75% compared to simulations performed in addition to correlation analysis. The correlation between random input variables should be prioritized, as this resulted in better estimates of risk associated with investment. For all simulated situations, the lowest slaughter weights dominated the largest, according to the first-and second-order stochastic dominance criteria. For the simulation with correlation, the probability of NPV ≥ 0 was 29.4, 24.4 and 19.4% for slaughter weights of 420, 460 and 500 kg, respectively. Interpretation of these simulations allowed classification of feedlot technology as high risk, with a high probability of economic loss.

ABSTRACT:The economic viability of feedlot zebu bulls, slaughtered at 450 kg after 90 days of feeding with diets consisting of different proportions of concentrate in dry matter (40, 60 or 80%), was estimated using Monte Carlo simulations, with or without the inclusion of Spearman rank correlations among random input variables, stochastic dominance (DOM) and sensitivity analysis (SENS). The roughage used was chopped sugar cane. Cash flow with indicators of performance, and probability distributions of all items of cost and revenue (from 2003 to 2014), were used to stimulate net present value (NPV), the financial indicator. Latin hypercube sampling and a Mersenne Twister random number generator were employed for the simulation with 2000 interactions. The risk was found to be more accurately estimated when correlations between random input variables were included (probability of NPV ≥ 0 ± standard deviation was 35 ± 166.05% and 31 ± 139.75% for the simulation without and with correlation, respectively). Considering this result, DOM and SENS were only carried out including these correlations. The expected value for NPV was similar between the different levels of concentrate (average USD -62/animal and NPV ≥ 0 of 33%) according to DOM analysis of simulations including correlations. From the SENS analysis, the final weight, finished cattle price, feeder cattle price and initial weight were the items with the greatest influence on NPV, regardless of the level of concentrate used, followed by intake and the cost-related items of diet and minimum rate of attractiveness. Based on the results obtained by simulation, the direct benefit of feedlot could be classified as high risk, suggesting the increased use of Monte Carlo simulation for decision-making.