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| Gobbi,Kátia Fernanda; Garcia,Rasmo; Ventrella,Marília Contin; Garcez Neto,Américo Fróes; Pereira,Odilon Gomes. |
| An experiment using signalgrass hay treated with increasing urea levels (0, 20, 40, and 80 g/kg of dry matter), and submitted to in vitro digestion times (0, 6, 12, 24 or 72 hours) was conducted to evaluate the effects of ammoniation rates and digestion times on leaf blade tissue degradation. A completely randomized design with a 4 × 5 factorial treatment arrangement, with three replicates was used. Data were submitted to multivariate analysis. Urea-treated hay presented smaller proportion of remaining tissues measured in leaf blades cross-sections after in vitro digestion. Tissues more affected by urea treatment degradation were parenchyma bundle sheath and sclerenchyma. The hay treated with 80 g urea/kg DM and in vitro digested for 24 or 72 hours showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammoniation; Brachiaria decumbens; C4 grass; Histological analyses; Leaf anatomy. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982008000500004 |
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| Roth,Marcella de Toledo Piza; Resende,Flávio Dutra de; Reis,Ricardo Andrade; Siqueira,Gustavo Rezende; Faria,Marcelo Henrique de; Berchielli,Telma Teresinha. |
| This trial was conducted aiming to evaluate the effects of Brachiaria brizantha vegetative seed harvest residues hay treated with anhydrous ammonia (NH3) or urea, and protein sources on the steers performance, and carcass quality. Twenty-four male beef cattle were (12 F1 Nellore X Aberdeen Angus and 12 F1 Nellore X Red Angus), distributed in four treatments, with six replications. Animal crossbreed type and initial body weight were considered blocks. The diets were: Untreated hay supplemented with non-protein nitrogen (UHNPN); untreated hay supplemented with cottonseed meal (UHCM), hay treated with 5% urea (HTU), hay treated with 3% anhydrous ammonia (HTA) of DM%. Diets were formulated to be isoproteic and isoenergetic. The initial body weight (kg), daily... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammoniation; Animal performance; Carcass characteristics; Chemical treatment; Forage quality; Haymaking. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982009000900030 |
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| Freitas,Poliane Meire Dias de; Carvalho,Gleidson Giordano Pinto de; Santos,Edson Mauro; Araújo,Gherman Garcia Leal; Oliveira,Juliana Silva de; Pires,Aureliano José Vieira; Maranhão,Camila Maida de Albuquerque; Rodrigues,Thomaz Cyro Guimarães de Carvalho; Pinto,Luís Fernando Batista. |
| Abstract: The objective of this work was to evaluate the effects of urea ammoniation of pearl millet silage, at different compaction densities, on chemical composition, losses in the ensilage process, fermentation profile, microbial population count, and aerobic stability. The experimental design was completely randomized, in a 2×4 factorial arrangement, with two compaction densities (600 and 800 kg m-3) and four urea levels (0, 2, 4, and 6% on a dry matter basis), with five replicates. For the aerobic stability assay, the experimental design was completely randomized, in a 2×4 factorial arrangement, with two times (0 and 72 hours) and four urea levels (0, 2, 4, and 6%, on dry matter basis), with five replicates. The urea levels interacted significantly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pennisetum glaucum; ADR500; Ammoniation; Fermentation losses; Microbial populations. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000800679 |
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