Performance And Economic Analysis Of Finished Lambs In Feedlot

This study aimed to evaluate animal performance and economic performance of feedlot crossbred lambs (Santa Inês+ - Suffolk) fed different diets based on hay from Cynodon dactylon genotypes, through the use of financial measures considering only the period of feedlot, without relating it to the complete management cycle. A total of 30 intact crossbred Suffolk lambs, identified with earrings, with an average age of 90 days and an average body weight of 21.5 kg were used in this study. Diets were formulated using as treatments a standard concentrate and hay of the Cynodon dactylon genotypes Jiggs, Vaquero, Tifton 68, Coast-Cross, Tifton 85 and Russell in a 60:40 forage-to-concentrate ratio. The treatments were distributed in a randomized complete block design with five replicates. There were significant differences between diets in terms of total expenditure on food, and the highest values were obtained for the Jiggs genotype (BRL 48.96/animal). The animals fed diets based on Tifton 68 hay had a higher rate of return (2.16%) and profitability (34.63%) compared to the other diets. The use of diets based on Tifton 68 hay for feedlot lambs in the finishing phase brings higher economic returns compared to the remaining diets.37129330

Desempenho de bezerros pantaneiros criados em pastagens nativas do Pantanal Sul-Mato-Grossense.

O objetivo deste experimento foi avaliar a influência do sexo, mês de nascimento e idade da vaca sobre o ganho de peso e a relação vaca/ bezerro de bovinos Pantaneiros mantidos em pastagens nativas do Pantanal Sul-Mato-Grossense. The aim of this trail was to evaluate the influence of gender, birth month and calf age on the calves weight gain and cow/calf ratio of Pantaneiro beef cattle raised on native pastures of Sul-Mato-Grossense Pantanal, Brazil

Factors affecting the performance of Pantaneiro horses.

This study aimed to assess the physical performance of Pantaneiro horses with and without equine infectious anemia (EIA) under functional conditions of cattle management. The horses were subjected to a performance test and split into two groups according to a completely randomized design: animals were chosen from populations testing positive and negative for EIA. Performance was measured as a function of a data envelopment analysis (DEA) model considering four outputs and one unitary input. The output measures were the distance achieved in the performance test, hematocrit as a weighted average over the test duration, respiratory rate as weighted average over the test duration, and the level of lactic acid at the test termination. Weights for the hematocrit and the respiratory rate output variables were determined by means of factor analysis. The performance score was a weighted average of the output variables with the weights defined by the averages of the optimum individual multipliers in the DEA analysis. Contextual variables of interest were age, horse weight, room temperature, and corporal temperature. Only groups and room temperature were statistically significant effects, as indicated by a bootstrap analysis. The performance of group positive for EIA is significantly lower than that of the group negative for EIA and room temperature has a negative effect

Estudos preliminares para identificação em maracujazeiro (Passiflora edulis) de biomarcadores da infecção pelo vírus do endurecimento dos frutos.

A produção brasileira de maracujá está em torno de mais de 920 mil toneladas, sendo 76% proveniente da região Nordeste. A Bahia é responsável por 52% da área plantada e 50% da produção brasileira, gerando R$ 400 milhões de reais ao ano. Contudo, a produção baiana apresenta baixa produtividade por falta de variedades resistentes a pragas e doenças