Effect of Monensin or Lasalocid, with and without Niacin or Amicloral, on Rumen Fermentation and Feed Efficiency

Bartley, E.E.; Herod, Edward L.; Bechtle, R. M.; Sapienza, D.; Brent, B.E.; Davidovich, A.

doi:10.2527/jas1979.4941066x

Cited by 111 publications

(50 citation statements)

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“…Monensin alters the flux of monovalent ions across the membranes of gram-positive bacteria, disrupting their normal function and causing them to lyse (Duffield and Bagg, 2000). The effects of monensin supplementation include increased ruminal propionate production and reduction of the ruminal acetate/propionate ratio (van Maanan et al, 1978), reduced production of methane (Bartley et al, 1979), increased DM and starch digestibility (Schelling, 1984), decreased production of bacterial protein (Schelling, 1984), and increased flow of amino acids to the duodenum (Haimoud et al, 1995). The monensin effects on ruminal volatile fatty acids directly or indirectly influence the metabolism of both glucose and ketones in cows (Duffield et al, 1998).…”

Section: Introductionmentioning

confidence: 97%

Effect of prepartum administration of monensin on metabolism of pregnant ewes

et al. 2011

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Section: Introductionmentioning

confidence: 97%

Effect of prepartum administration of monensin on metabolism of pregnant ewes

et al. 2011

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“…However, the magnitude of the response has been variable, ranging from nil (Zinn and Borques 1993) to greater than 187ó (Bartley et al 1979 (Rumpler et al 1986). …”

Section: Effects Of Ionophores On Growth Performancementioning

confidence: 99%

Efficacy of ionophores in cattle diets for mitigation of enteric methane1

Guan

Wittenberg

Ominski

et al. 2006

Journal of Animal Science

241

174

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“…Não houve efeito de rumensin sobre o pH ruminal (P>0,10), semelhante ao resultado de COE et al (1996). Alguns autores afirmam que a monensina causa um ligeiro aumento na concentração de lactato (BEEDE e FARLIN, 1977;BARTLEY et al, 1979), sem causar mudança no pH do líquido ruminal quando bovinos são alimentados com baixas taxas de carboidratos (DINIUS et al, 1976). Entretanto, com altas taxas de carboidratos em estudos in vitro com líquido de rúmen, a monensina produziu significante aumento no pH e redução na concentração de lactato (DENNIS et al, 1980).…”

Section: Tempo (H)unclassified

Influência de Rumensin®, óleo de soja e níveis de concentrado sobre o consumo e os parâmetros fermentativos ruminais em bovinos

et al. 2001

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RESUMO -Objetivou-se avaliar os efeitos de óleo de soja (500 mL/animal/dia), Rumensin ® (3 g/animal/dia) e níveis de concentrado (0, 25, 50, 75%) na dieta de bovinos, e cana-de-açúcar como volumoso, sobre alguns parâmetros ruminais e consumo de matéria seca. Foram utilizados quatro bovinos 7/8 holandês-zebu fistulados no rúmen, com peso vivo médio de 400 kg. O experimento consistiu de quatro períodos de 15 dias, sendo 12 dias para adaptação à dieta e três dias para coletas de amostras. Utilizou-se um nível de concentrado em cada período e o óleo e rumensin foram distribuídos em quadrado latino, em um fatorial 2x2. As análises de amônia, pH e AGV do líquido ruminal foram feitas em amostras coletadas através da fístula às 0, 3 e 6 horas após a alimentação. A leitura do pH foi feita com potenciômetro, as análises de amônia por colorimetria e as de ácidos graxos voláteis por cromatografia gasosa. O acetato, a relação acetato:propionato e o pH decresceram, e os teores de isobutirato, isovalerato e amônia ruminal aumentaram com a elevação do nível de concentrado. O propionato aumentou e a relação acetato:propionato diminuiu com a presença de Rumensin. O butirato aumentou com o óleo quando a dieta continha somente volumoso e diminuiu com o aumento de concentrado. O pH e a amônia ruminais diminuíram com o tempo de coleta. A atividade in vitro de desaminação pela população microbiana decresceu com o aumento do nível de concentrado e aumentou na presença de óleo. O consumo de matéria seca aumentou com a elevação do nível de concentrado e diminuiu na presença de Rumensin e óleo. Todos os outros efeitos principais e interações não foram significativos.Palavras-chave: bovinos, concentrado, fermentação, ionóforos, lipídios, rúmen Effect of Rumensin ® , Soybean Oil and Concentrate Levels on Ruminal Parameters and Dry Matter Intake in BovinesABSTRACT -The objective of this research was to evaluate the effects of soybean oil (500 mL/animal/day), Rumensin ® (3g/animal/ day) and levels of concentrate (0, 25, 50 and 75%) in the diet of bovines, and sugarcane as a forage source, in some ruminal parameters and dry matter intake. There were used four rumen fistulated 7/8 holstein-zebu steers, at 400 kg of live weight. The experiment consisted of four periods of 15 days, in which 12 were for adaptation to the diets and three for sampling. It was used one level of concentrate in each period and oil and Rumensin were distributed in a latin square, as 2x2 factorial design. Ammonia, pH and VFA analysis in the rumen fluid were measured in samples collected at 0, 3 and 6 hours after feeding. The pH was immediately measured by glass electrode, ammonia was analysed by colorimetry and VFA by gas chromatography. Acetate, acetate to propionate ratio and pH were decreased, but isobutyrate, isovalerate, and ruminal ammonia were increased in high concentrate levels. Propionate was increased and acetate to propionate ratio was decreased with Rumensin. Butyrate was increased with oil in the forage diet, but decreased with increasing concentrate. Rumin...

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Effect of Monensin or Lasalocid, with and without Niacin or Amicloral, on Rumen Fermentation and Feed Efficiency

Cited by 111 publications

References 0 publications

Effect of prepartum administration of monensin on metabolism of pregnant ewes

Effect of prepartum administration of monensin on metabolism of pregnant ewes

Efficacy of ionophores in cattle diets for mitigation of enteric methane1

Influência de Rumensin®, óleo de soja e níveis de concentrado sobre o consumo e os parâmetros fermentativos ruminais em bovinos

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