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      Evaluating agro-industrial by-products as dietary roughage source on growth performance of fattening steers

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          Abstract

          Silages from pineapple peel, sweet corn husk and cob mixed with bagasse and vinasse were evaluated to determine their chemical composition and fermentation characteristics as well as feeding performance in fattening steers. The experiment, which lasted 90 days, involved 48 fattening steers (264 ± 37.4 kg BW) randomly allocated to three diets. Treatments included: a control diet containing rice straw and molasses (T1); diet containing bagasse–vinasse mixture including sweet corn husk and cob silage (BS; T2); and diet containing bagasse–vinasse mixture including pineapple peel silage (BP; T3). All treatments included a commercial concentrate feed (13% CP) and ad libitum rice straw throughout the experiment. Results from chemical analysis showed that dry matter (DM) of BS was higher than BP ( P < 0.05), whereas the protein content of BS and BP was similar ( P > 0.05). For fermentation characteristics, pH in BP was lower than BS ( P < 0.05); in addition, acetic and butyric acids in BS were higher than BP ( P < 0.05). Findings from growth trial showed that total DM intake in steers fed T1 was higher compared to the other dietary treatments ( P < 0.05), whereas the average BW gain was found to be grater in T3 steers ( P < 0.05). As result from our findings, bagasse–vinasse mixture with pineapple peel silage appeared to be a viable feed ingredient in fattening steer diet and moreover it could become an economically feasible agro-industrial by-product for farmers.

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          Most cited references 23

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          Gravimetric determination of amylase-treated neutral detergent fiber in feeds with refluxing in beakers or crucibles: collaborative study.

           David Mertens (2015)
          As an important constituent of animal feeds, fiber represents the portion of feeds that is bulky and difficult to digest. The neutral detergent fiber (NDF) method, developed over 30 years ago, is the method of choice for measuring total fiber in forages and other feeds. Several modifications that were made to improve its general applicability to all feeds and others developed in individual laboratories often resulted in variability among laboratories in measuring NDF. The amylase-treated NDF (aNDF) method, therefore, was developed as an accurate and precise method of measuring total insoluble fiber in feeds. A collaborative study was conducted to evaluate the repeatability and reproducibility of the aNDF method over the full range of animal feed materials. Twelve laboratories representing research, feed company, regulatory, and commercial feed testing laboratories analyzed 11 materials as blind duplicates. The materials represented feed matrixes, including animal products; high-protein, high-fat, and high-pectin feeds; oil seeds; grains; heated by-product feeds; and legume and grass hays and silages. Materials selected varied in chemical composition and contained 0-90% aNDF, 1-16% ash, 1-20% crude fat, 1-40% crude protein, and 0-50% starch. Correcting results for changes in blanks and reporting results as ash-free aNDF organic matter (aNDFom) improved the repeatability and reproducibility of results when aNDF was 10% fat. However, standard deviations of repeatability and reproducibility for feeds with >10% fat were similar to those of other materials. It is recommended that the aNDF method be accepted for Official First Action status.
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            Alternative feed resources and their effects on the quality of meat and milk from small ruminants

             A Priolo,  V Vasta,  A Nudda (2008)
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              Wet oxidation as a pretreatment method for enhancing the enzymatic convertibility of sugarcane bagasse

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                Author and article information

                Contributors
                Journal
                Saudi J Biol Sci
                Saudi J Biol Sci
                Saudi Journal of Biological Sciences
                Elsevier
                1319-562X
                2213-7106
                02 February 2015
                September 2015
                02 February 2015
                : 22
                : 5
                : 580-584
                Affiliations
                [a ]Department of Animal Science, Faculty of Agriculture, Kasetsart University, 10900 Bangkok, Thailand
                [b ]Department of Emergency and Organ Transplantation (DETO), Section of Veterinary Science and Animal Production, University of Bari ‘Aldo Moro’, 70010 Valenzano BA, Italy
                Author notes
                Article
                S1319-562X(15)00016-9
                10.1016/j.sjbs.2015.01.015
                4537863
                26288562
                © 2015 The Authors

                This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

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