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Analysis of NH3-N Slow Release systems for fiber digestibility of low-quality forage: in vitro approach Scientia Agricola
Cruz,Camila Conceição Tomé da; Pereira,Elaine Inácio; Sato,Patrícia Suemi; Guimarães,Gelton Geraldo Fernandes; Souza,Gilberto Batista de; Bernardi,Alberto Carlos de Campos; Ribeiro,Caue.
ABSTRACT: Urea is a common non-protein supplement used in ruminant feed; however, excessive consumption may lead to poisoning by NH3. Although the slow release of urea into the rumen has shown to be an essential aspect for ruminant feed, to date only a few studies have addressed this matter. In this study we examined the influence of five different NH3-N slow release systems based on clay-urea nanocomposites on the fiber digestibility of low-quality forage (sugarcane straw) in vitro. Physical properties of nanocomposites were evaluated and their effects on digestibility were tested in vitro using pristine urea as a positive control (level of 1 % of DM of sugarcane straw sample) and sugarcane (with no additives) as a negative control. Ammonia release and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Slow-release urea; Ruminants feed; Non-protein nitrogen.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000500401
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Replacement of soybean meal by conventional and coated urea in dairy cows: intake, digestibility, production and composition of milk Animal Sciences
Gonçalves, Geógenes da Silva; Universidade Estadual do Sudoeste da Bahia; Pedreira, Marcio dos Santos; Universidade Estadual do Sudoeste da Bahia; Azevedo, José Augusto Gomes; Universidade Estadual de Santa Cruz; Del Rei, Antonio Jorge; Universidade Estadual do Sudoeste da Bahia; Silva, Herymá Giovane Oliveira; Universidade Estadual do Sudoeste da Bahia; Silva, Fabiano Ferreira; Universidade Estadual do Sudoeste da Bahia.
http://dx.doi.org/10.1590/actascianimsci.v36i1.21314This study evaluated the effect of dairy cows’ diets containing two different sources of urea on dry matter intake, nutrient apparent digestibility, and milk production and composition. Eight crossbred cows (Holandês x Zebu) were confined and randomly assigned to four sequential diets distributed in two 4 x 4 Latin: SM = soybean meal; SRU 0 = conventional urea (CU) 100%/slow release urea (SRU) 0%; SRU 44 = CU 56%/SRU 44%; SRU 88 = CU 12%/SRU 88%. Experimental periods consisted of 21 days, with total duration of 84 days. Dry matter intake, neutral detergent fiber, organic matter, crude protein, and total digestible nutrients were not affected by experimental diets. Dry matter and neutral detergent fiber...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Conventional urea; Dry matter intake; Slow-release urea conventional urea; Dry matter intake; Slow-release urea.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21314
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