Effect Monensin on Performance of Cattle Forage

Potter, E. L.; Cooley, C. O.; Richardson, L. F.; Raun, A. P.; Rathmacher, R. P.

doi:10.2527/jas1976.433665x

Cited by 109 publications

(61 citation statements)

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“…This situation originated from the decreasing forage quality as the season advanced. Similar results with forage quality decreasing live weight gains in grazed animals were reported by other researchers (27,28). In grazing experiments, as the forage quality decreased, the response to supplementation always increased (29).…”

Section: Discussionsupporting

confidence: 78%

The effect of supplemental concentrate feed on live weight gain of yearling heifers over grazing season in subirrigated rangelands of East Anatolia

Koç¹,

Kaya²,

Güllap³

et al. 2014

Turk J Vet Anim Sci

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Section: Discussionsupporting

confidence: 78%

The effect of supplemental concentrate feed on live weight gain of yearling heifers over grazing season in subirrigated rangelands of East Anatolia

Koç¹,

Kaya²,

Güllap³

et al. 2014

Turk J Vet Anim Sci

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“…The depression of fiber digestion can be reasonably explained by the inhibitory effect of monensin on rumen cellulolytic bacteria, mainly ruminococci and butyrivibria (Dennis et al 1981;Henderson et al 1981). As it is known that monensin increases the productive efficiency of ruminants on both high-concentrate (review Galyean and Owens 1988) and roughage diets (Potter et al 1976;Faulkner et al 1985), we must assume that unfavourable effect of monensin on digestion of cellulose is compensated for by its benefitial effect on digestion of other components of plant matter and/or by increased post-ruminal cellulose digestion.…”

Section: Discussionmentioning

confidence: 99%

Effect of Monensin on Production of Volatile Fatty Acids from Cellulose, Hemicelluloses, Pectin and Starch in Mixed Cultures of Rumen Microorganisms

Šimůnek¹,

Savka²,

Kalačnjuk³

et al. 1989

Acta Vet. Brno

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Brno, 58, 1989: 215-223. In in vitro experiments we studied the effect of monensin on production of volatile fatty acids (VFA) from cellulose, hemicelluloses, pectin and starch in mixed cultures of rumen microorganisms. The following results were obtained:1. Monensin lowered the concentration of VF A in cultures with cellulose. There were only minor differences in total VF A concentration between monensin-free and monensin-treated cultures with hemicelluloses, pectin and starch.2. Monensin decreased the molar ratio acetate to propionate in cultures with hemicelluloses, pectin and starch, but increased this ratio in cultures with cellulose.3. There were no significant differences between monensin from Elanco and its Czechoslovak analogue. Monensin maintained its effect throughout the 3-month experimental period. In vitro, rumen fluid, acetate, propionate, butyrateMonensin, an ionophore antibiotic, is widely used to improve the feed efficiency and stimulate the body mass gains of ruminants. While considerable research has been reported on how rumen fermentation is affected by monensin, information is limited on how this polyether ionophore affects the fermentation of particular components of plant cell material. Some experiments in vivo and in vitro have shown that monensin decreases the digestibility of fibre and fibrous components (Poos et al. 1979;Henderson et al. 1981;Wallace et al. 1981;Whetstone et al. 1981). Also salinomycin, an ionophore similar to monensin, has been shown to depress the digestibility of fibre (Zinn 1986). However, other authors found only minor

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“…Avaliando a suplementação de monensina sódica via sal mineral para novilhos mantidos em pastagem de colonião, ANDRADE et al (1996) também não encontraram efeito significativo no ganho de peso dos animais que receberam o ionóforo. Por outro lado, existem trabalhos (POTTER et al, 1976;BOLING et al, 1977;SPEARS et al, 1984) nos quais foram constatados maiores ganhos de peso médios diários em animais suplementados com lasalocida sódica ou monensina sódica em pastagem cultivada quando comparados aos não suplementados.…”

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“…GOODRICH et al (1984), analisando os resultados de 228 testes, encontraram redução média de 6,4% no consumo de alimentos nos animais que receberam monensina na dieta. Menores consumos de MS por animais que receberam ionóforos também foram constatados por PERRY et al (1976), POTTER et al (1976) e BERGER et al (1981.…”

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Lasalocida sódica suplementada via sal para fêmeas de corte mantidas em pastagem cultivada de estação fria

Roso¹,

Restle

2001

R. Bras. Zootec.

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RESUMO -Este experimento foi conduzido para avaliar o efeito da lasalocida sódica adicionada ao sal comum e usada como suplemento, no desempenho de fêmeas de corte, com idade de 10 meses e peso médio inicial de 200 kg, mantidas em pastagem cultivada com gramíneas anuais de estação fria. A semeadura, a lanço, foi realizada em 21/04/95, sendo a área adubada com 200 kg/ha (05-30-15). A adubação de cobertura foi de 175 kg/ha de nitrogênio, na forma de uréia e parcelada em quatro aplicações. O estabelecimento da pastagem ocorreu de 21/04 a 08/06 e o período experimental iniciou em 08/09, estendendo-se até 14/11. O sal e a mistura de sal mais lasalocida foram fornecidos semanalmente. A quantidade de lasalocida fornecida na mistura correspondeu a 225 mg/animal/dia do princípio ativo. A adição de lasalocida sódica não afetou o ganho de peso médio diário (0,842 versus 0,852 kg), mas resultou em aumento não-significativo de 7% na carga animal média (1382 versus 1292 kg de PV/ha), 6,9% no ganho de peso vivo por hectare (347,80 versus 325,50 kg de PV/ha) e 6% na eficiência alimentar (8,56 versus 9,07 kg MS/kg PV), aumentou o custo de utilização da pastagem em R$ 11,50/ha e propiciou incremento na receita líquida em R$ 15,30/ha. Palavras-chave: carga animal, custo, desempenho animal, eficiência alimentar, ionóforo, receita líquida Lasalocid Added to Salt for Beef Heifers Grazing Annual Temperate GrassesABSTRACT -The experiment was conducted to evaluate the performance of beef heifers with average age of ten months and average initial weight of 200 kg, grazing cultivated annual temperate grasses mixtures supplemented with salt plus lasalocid or salt. Spread sowing ocurred on 04/21/95, being the area fertilized with 200 kg/ha of 05-30-15. Nitrogen fertilization in the form of urea (175 kg/ha of N) was subdivided in four applications. The establishment of the pasture occured from 04/21 to 06/08 and the experimental period occured from 09/08 until 11/14. Salt and salt plus lasalocid were supplied weekly. Quantity of lasalocid supplied in the mixture was 225 mg/animal/ dia. Addition of lasalocid did not affect average daily weight gain (.842 vs .852 kg), but resulted in a no significant increase of 7% in stocking rate (1382 vs 1292 kg/ha), 6.9% increase in weight gain per ha (347.8 vs 325.5 kg), 6% better feed efficiency (8.56 vs 9.07 kg DM/kg of live weight gain), and increased cost of pasture utilization in R$ 11.50/ha providing an increment in net income of R$ 15.30/ha. IntroduçãoVisando amenizar o déficit alimentar do período compreendido como vazio forrageiro do outono-inverno, em que o campo nativo não apresenta crescimento suficiente para suportar adequadamente o número de animais que suporta no verão, são largamente utilizadas pastagens cultivadas de estação fria, no Rio Grande do Sul. Vários trabalhos com animais em pastejo têm demonstrado o elevado potencial produtivo destas espécies quando utilizadas e manejadas adequadamente, RESTLE et al.

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Effect Monensin on Performance of Cattle Forage

Cited by 109 publications

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The effect of supplemental concentrate feed on live weight gain of yearling heifers over grazing season in subirrigated rangelands of East Anatolia

The effect of supplemental concentrate feed on live weight gain of yearling heifers over grazing season in subirrigated rangelands of East Anatolia

Effect of Monensin on Production of Volatile Fatty Acids from Cellulose, Hemicelluloses, Pectin and Starch in Mixed Cultures of Rumen Microorganisms

Lasalocida sódica suplementada via sal para fêmeas de corte mantidas em pastagem cultivada de estação fria

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