The effect of feeding antibiotic growth promoters on the performance of beef cattle consuming forage-based diets: A review

Bretschneider, Gustavo; Elizalde, J. C.; Pérez, Fredy Ayala

doi:10.1016/j.livsci.2007.12.017

Cited by 63 publications

(130 citation statements)

References 67 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The higher BW of cattle at the conclusion of the study following treatment with monensin is consistent with previous research showing a positive effect of monensin in cattle grazing pasture 10,11 . The higher BW may have been due to an improvement in energy utilisation of pasture, which is consistent with the observed higher proportion of rumen propionate following treatment with monensin 29 .…”

Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 73%

“…The effect of monensin is generally greater when pasture quality is poor and the ADG of controls is low 10,31,32 and the response to monensin is lower when pasture quality is high 11 . In the current study, however, the response to monensin was greatest when ADG was highest (Figure 2), similar to effects observed with lasalocid 11 . If cattle with higher ADG were selectively grazing pasture with higher digestibility, it is possible that rumen lactic acid accumulation would be higher and the response to monensin in preventing this acid accumulation would be greater 10 .…”

Section: Discussionmentioning

confidence: 99%

“…Monensin is a rumen modifier that reduces the risk of acidosis induced by infusing glucose or ground corn into the rumen of cattle 8,9 and improves body weight (BW) gain in cattle fed pasture 10,11 . Although monensin has also been used to prevent SARA that was induced by feeding high moisture corn to cattle, 12 the effect of monensin in the prevention of SARA in beef cattle only grazing lush pasture without concentrates and the subsequent effect on live‐weight gain has not been explored.…”

mentioning

confidence: 99%

See 3 more Smart Citations

Rumen fermentation and liveweight gain in beef cattle treated with monensin and grazing lush forage

Packer

Clayton²,

Cusack

2011

Aust Veterinary J

View full text Add to dashboard Cite

show abstract

Section: Discussionsupporting

confidence: 90%

Section: Discussionsupporting

confidence: 73%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

See 2 more Smart Citations

Rumen fermentation and liveweight gain in beef cattle treated with monensin and grazing lush forage

Packer

Clayton²,

Cusack

2011

Aust Veterinary J

View full text Add to dashboard Cite

show abstract

“…These compounds are produced by various strains of Streptomyces and include moensin, lasalocid, salinomycin, and narasin (Bergen and Bates 1984). These compounds are used as growth promoters (Bretschneider et al 2008).…”

Section: Ionophoresmentioning

confidence: 99%

Rumen microorganisms and fermentation

et al. 2014

View full text Add to dashboard Cite

RESUMENEl rumen es un ecosistema complejo donde los nutrientes consumidos por los rumiantes son digeridos mediante un proceso de fermentación realizado por los microorganismos ruminales (bacterias, protozoos y hongos). Dichos microorganismos están en simbiosis, debido a su capacidad de adaptación e interacción, y mientras el rumiante proporciona el ambiente necesario para su establecimiento estos proporcionan energía al animal, la que proviene de los productos finales de la fermentación. Dentro del rumen, los microorganismos coexisten en un entorno reducido y a un pH cercano a la neutralidad. Estos microorganismos fermentan los sustratos presentes en la dieta del rumiante (azúcares, proteínas y lípidos). Sin embargo, el proceso de fermentación no es 100% eficaz, ya que durante la fermentación existen pérdidas de energía, principalmente en forma de gas metano (CH 4 ), el que representa un problema medioambiental, ya que es un gas de efecto invernadero. Por consiguiente, para mejorar la eficiencia de los sistemas de producción de rumiantes se han establecido estrategias nutricionales que tienen como objetivo manipular la fermentación ruminal mediante el uso de aditivos en la dieta, como monensina, sebo, tampones, compuestos de nitrógeno, probióticos, etc. Estos aditivos permiten cambiar el proceso de fermentación y mejorar la eficiencia animal, además disminuyen la pérdida de energía. El objetivo de este trabajo es revisar los procesos fermentativos que tienen lugar en el rumen y aplicar los fundamentos de estos en el desarrollo de nuevas estrategias nutricionales que pudieran ayudar a mejorar los procesos de digestión, de manera que se alcance una máxima producción.Palabras clave: aditivos, microorganismos ruminales, simbiosis. SUMMARYThe rumen consists of a complex ecosystem where nutrients consumed by ruminants are digested by fermentation process, which is executed by diverse microorganisms such as bacteria, protozoa, and fungi. A symbiotic relationship is found among different groups of microorganisms due to the diverse nature of these microbial species and their adaptability and interactions also coexist. The ruminant provides the necessary environment for the establishment of such microorganisms, while the microorganisms obtain energy from the host animal from microbial fermentation end products. Within the ruminal ecosystem, the microorganisms coexist in a reduced environment and pH remains close to neutral. Rumen microorganisms are involved in the fermentation of substrates contained in thedietof the animals (carbohydrates, proteins and lipids). However, the fermentation process is not 100% effective because there are energy losses mainly in the form of methane gas (CH 4 ), which is a problem for the environment since it is a greenhouse gas. In order to improve the efficiency of ruminant production systems, nutritional strategies that aim to manipulate ruminal fermentation using additives in the diet such as monensin, tallow, buffers, nitrogen compounds, probiotics, and others have been used. These additi...

show abstract

Stocking method and monensin supplementation effects on cow and calf performance and pasture productivity

et al. 2022

View full text Add to dashboard Cite

In the northeastern United States, pastures are predominantly cool-season perennial grasses and legumes that are dormant in the summer resulting in a decline in forage nutritive value and availability, commonly referred to as "summer slump." Strategies to alleviate summer slump may include stocking management or supplementation with or without an ionophore such as monensin to maximize efficiency. A 3-yr study (n = 32 cow-calf pairs; 718.0 ± of 83.9 kg) was conducted to evaluate the effects of rotational (ROT) or continuous (CONT) stocking method with or without monensin on forage production, pasture nutritive value, and animal production. Continuous and ROT stocking treatments were assigned to eight 2.9-ha pastures with two replicates/year for 56 grazing days during the summer. Treatments were arranged as a 2 × 2 factorial, and supplements included with or without monensin (200 mg cow −1 daily; Rumensin 90, Elanco Animal Health) delivered once daily (0.45 kg cow −1 ). Disk meter height was maintained using put-and-take animals with four tester cow-calf pairs per pasture. Carrying capacity (CC) and calf average daily gain (ADG) were not influenced by stocking management. Rotational stocking increased cow body weight (BW) change by 6.6 kg. Monensin improved CC by 9% regardless of stocking method but did not affect cow BW change or calf ADG. Based on this study, monensin can improve carrying capacity and stocking rate regardless of stocking method. Implementing rotational stocking may improve pasture health by suppressing weed growth and enhancing forage nutritive value in pastures containing cool-season perennial forages.

show abstract

The effect of feeding antibiotic growth promoters on the performance of beef cattle consuming forage-based diets: A review

Cited by 63 publications

References 67 publications

Rumen fermentation and liveweight gain in beef cattle treated with monensin and grazing lush forage

Rumen fermentation and liveweight gain in beef cattle treated with monensin and grazing lush forage

Rumen microorganisms and fermentation

Stocking method and monensin supplementation effects on cow and calf performance and pasture productivity

Contact Info

Product

Resources

About