Ruminal Ammonia
Mostrando 13-24 de 98 artigos, teses e dissertações.
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13. Effect of whey fermented by Enterococcus faeciumin consortium with Veilonella parvulaon ruminal bacteria in vitro
The objective of this research was to evaluate the effect of whey fermented by Enterococus faecium in consortium with Veilonella parvula in vitro on ruminal microorganisms in different substrates, with or without monensin. The first experiment was carried out in a completely randomized design, in a 6 × 3 factorial arrangement (six substrates × three whey l
R. Bras. Zootec.. Publicado em: 2014-05
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14. Whole or ground millet grain provided in two supplementation frequencies for grazing beef cattle: nutritional parameters
The objective of this study was to evaluate the processing of millet grain provided at two supplementation frequencies for grazing beef cattle during the dry season on nutritional parameters. Five rumen-cannulated crossbred steers, with 24 to 26 months of age and average body weight of 428.6±26.06 kg, were assigned to a Latin square design (5 × 5) in a 2 �
R. Bras. Zootec.. Publicado em: 2014-05
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15. Effects of phenolic compounds in propolis on digestive and ruminal parameters in dairy cows
Four rumen-cannulated primiparous lactating cows were studied in a 4 × 4 Latin square design experiment to evaluate the effects of propolis-based products (PBP) with different concentrations of propolis and alcohol levels on total digestibility, (TD), ruminal digestibility (RD), intestinal digestibility (ID), pH, ruminal ammonia-nitrogen production (NH3-N),
R. Bras. Zootec.. Publicado em: 2014-04
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16. Total digestible nutrient levels in supplements for finishing steers in the rainy season: nutritional characteristics and microbial efficiency
The objective of this study was to evaluate the effects of total digestible nutrient (TDN) levels in supplements on rumen pH, ruminal ammonia nitrogen concentration, intake and digestibility, nitrogen balance and microbial efficiency in beef cattle grazing on Marandu grass during the rainy season. The supplements comprised a mineral mixture, ground corn grai
R. Bras. Zootec.. Publicado em: 2013-11
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17. Intake, digestibility and ruminal parameters of dairy cows fed pelleted diets and treated with lignosulfonate-containing sunflower seeds
The objective of this study was to evaluate intake, in vitro and apparent digestibility and ruminal parameters of Holstein cows that were confined and fed corn silage and concentrate containing: ground sunflower seeds (GS); ground sunflower seeds treated with 5% lignosulfonate (GSL); pelleted sunflower seeds (PS); or ground and pelleted sunflower seeds treat
R. Bras. Zootec.. Publicado em: 2013-09
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18. Rumen fermentation and rumen microbes in Nellore steers receiving diets with different lipid contents
The objective of the present study was to evaluate the effects of dietary lipid content (20, 40 and 60 g/kg dry matter) on intake, total and ruminal apparent digestibility of dry matter (DM), nutrient digestibility, rumen fermentation parameters, microbial synthesis efficiency and rumen microbial content of beef cattle. Nine cannulated steers at 6 months of
R. Bras. Zootec.. Publicado em: 2013-03
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19. Effect of tanniniferous plants and essential oils on methane emission in ruminants / Efeito de plantas taniníferas e óleos essenciais sobre a emissão de metano em ruminantes
Tannins and essential oils are secondary metabolites that may be used as natural modifiers of rumen fermentation to reduce the ruminants\ methane (CH4) emission. To study the application of tannin-rich plants from Egypt and Brazil, as well as essential oils that are available in international trade, three studies were conducted at Animal Nutrition Laboratory
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2012
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20. EVALUATION OF THE USE OF Acacia mearnsii TANNIFEROUS EXTRACT AS MODULATOR OF RUMINAL FERMENTATION IN CATTLE / AVALIAÇÃO DO USO DE EXTRATO TANÍFERO DE Acacia mearnsii COMO MODULADOR DA FERMENTAÇÃO RUMINAL EM BOVINOS
The effect of levels of Acacia meanrsii tannin extract addition in cattle diet (0, 0.8, 1.6 or 2.4%, dry matter (DM) basis) on rumen fermentation, digestion and N retention was evaluated. The experiment was conducted in a 4 x 4 Latin Square design with four steers (156 33 kg of body weight (BW)) housed in metabolism cages. Diet was 60% oat (Avena strigosa) a
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/03/2012
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21. Avaliação de métodos para análise de nitrogênio amoniacal em fluido ruminal e de óxido crômico em amostras de fezes de bovinos / Evaluation of methods for analyses of ammonia nitrogen in rumen fluid and chromium in cattle feces
This dissertation was based on two different experiments. The first one was conducted to evaluate the accuracy of two different methods in measuring the ammonia nitrogen (N-NH3) concentration in rumen fluid: a catalyzed indophenol colorimetric reaction (CICR) and the Kjeldahl distillation (KD). Five buffered standard solutions containing volatile fatty acids
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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22. Substituição do farelo de soja por uréia de liberação lenta em dietas de terminação para bovinos de corte / Soybean meal replaced by slow release urea in finishing diets for beef cattle
Objetivou-se avaliar os efeitos da substituição do farelo de soja por uréia de liberação lenta (0, 33, 66 e 100%) em dietas com dois níveis de concentrado (40 e 80%) sobre o consumo, digestibilidade parcial e total, fluxo de nutrientes, parâmetros ruminais, produção de proteína microbiana, eficiência proteica e balanço de nitrogênio em novilhos
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/02/2012
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23. Metabolism and ruminal parameters of Holstein × Gir heifers fed sugarcane and increasing levels of crude protein
The objective of this study was to evaluate the effect of increasing levels of crude protein (CP) in the diet (13, 15, 19 and 22 g/100 g of dry matter, DM) on the metabolism and ruminal parameters of crossbred heifers fed forage sugarcane. Four crossbred Holstein × Gir heifers of average initial weight of 200 kg and average age of 14 months were used. The e
R. Bras. Zootec.. Publicado em: 2012-09
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24. Rumen fermentation and nutrient flow to the omasum in Holstein cows fed extruded canola seeds treated with or without lignosulfonate
Four multiparous Holstein cows averaging 548 kg of body weight and 74 d in lactation were used in a Latin square design with four 21-d experimental periods to determine effects of feeding extruded versus non-extruded canola seed, with or without 50 g/kg lignosulfonate on rumen fermentation, nutrient flow to the omasum, and degradability of dry matter (DM) an
Revista Brasileira de Zootecnia. Publicado em: 2012-07