Analysis of Fibrous Compounds Using a Pressurized and Non-pressurized Conditions

Edgard Gonçalves Malaguez, Andressa Tellechea Rodrigues, Kelli Flores Garcez, Gabriela Ceratti Hoch, Ana Paula Schmidt, Francisco Augusto Burkert Del Pino and Deise Dalazen Castagnara

Journal of Agricultural Studies, 2020, vol. 8, issue 4, 670-677

Abstract: Neutral detergent fiber (NDF) and acid detergent fiber (ADF) contents were evaluated in pressurized and unpressurized conditions using samples of roughage and concentrates. In summary, the samples were dried, processed in a knife mill, weighed in nonwoven bags (100g/m²), placed in a container and treated with neutral or acid detergents. Extractions of NDF and ADF content were carried out in a non-pressurized condition at temperature of 100°C for 60min and in pressurized condition using different temperatures of 100 and 110°C for 60min. Results of the different temperatures using the pressurized procedure were compared to those obtained with the pressurized through the linear regression analysis. The method with the temperature 110°C for 60 min had a high level of agreement. Was not observed a bias potential of proportion (P>0.05). There was not a systematic inclination of the methods to overestimate or underestimate errors. This methodology can be carried out with roughage and concentrate feedstuffs simultaneously.

Date: 2020
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