Influences of flavomycin, ropadiar, and saponin on nutrient digestibility, rumen fermentation, and methane emission from sheep

Wang, C.J.; Wang, S.P.; Zhou, Hongxu

doi:10.1016/j.anifeedsci.2008.03.008

Cited by 145 publications

(132 citation statements)

References 14 publications

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“…In this study, the addition of TS essential oil at the levels of 10 and 15 μl per kg LW of lambs did not adversely affect LW or LW gain. The intake of concentrate feed and lucerne hay was similar which is in accordance with the results of other in vivo studies examining thyme oil and active compounds of this genus (carvacrol, thymol, γ-terpenene and p-cymene) (Bampidis et al, 2005;Chaves et al, 2008;Wang et al, 2009;Vakili et al, 2013). Simitzis et al (2008) also observed that supplementation of concentrate feed oregano essential oil (1 ml · kg −1 ) did not affect LW or LW gain.…”

Section: Discussionsupporting

confidence: 78%

“…Wang et al (2009) also reported that the addition of oregano oil at the dose of 250 mg · d −1 into sheep diet did not affect the ruminal pH and A:P ratio, but increased VFA content and decreased NH 3 -N concentration. Chaves et al (2008) found that carvacrol (purity >98%) supplementation at the level of 0.2 g · kg −1 DM reduced ruminal pH, increased VFA and did not change A:P ratio or NH 3 -N level in lambs.…”

Section: Discussionmentioning

confidence: 98%

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The effect of Mediterranean thyme (Thymbra spicata L. var. spicata) essential oil on fattening performance and ruminal parameters in lamb

Baytok¹,

Kara²,

Aksu³

et al. 2017

J. Anim. Feed Sci.

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Section: Discussionsupporting

confidence: 78%

Section: Discussionmentioning

confidence: 98%

The effect of Mediterranean thyme (Thymbra spicata L. var. spicata) essential oil on fattening performance and ruminal parameters in lamb

Baytok¹,

Kara²,

Aksu³

et al. 2017

J. Anim. Feed Sci.

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“…The digestibilities of organic matter and neutral-detergent fibre also reduced in the presence of Sapindus saponaria fruits (27) and extracts of Sapindus mukorossi (54) . In many other studies (21,24,27,37,38) , saponins have been reported not to influence nutrient digestibilities. A number of studies have reported increases in digestibilities of organic matter and fibre components.…”

Section: Digestion Of Feeds and Volatile Fatty Acid Productionmentioning

confidence: 99%

The effect and mode of action of saponins on the microbial populations and fermentation in the rumen and ruminant production

2009

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The growing public concerns over chemical residues in animal-derived foods and threats of antibiotic-resistant bacteria have renewed interest in exploring safer alternatives to chemical feed additives in ruminant livestock. Various bioactive phytochemicals including saponins appear to be potential 'natural' alternatives to 'chemical' additives in modulating rumen fermentation favourably and animal performance. Saponins are a diverse group of glycosides present in many families of plants. The primary effect of saponins in the rumen appears to be to inhibit the protozoa (defaunation), which might increase the efficiency of microbial protein synthesis and protein flow to the duodenum. Furthermore, saponins may decrease methane production via defaunation and/or directly by decreasing the activities (i.e. rate of methanogenesis or expression of methane-producing genes) and numbers of methanogens. Saponins may also selectively affect specific rumen bacteria and fungi, which may alter the rumen metabolism beneficially or adversely. The ammonia-adsorption and modulation of digesta passage in the rumen by saponins have also been implicated in altering rumen metabolism, but their physiological responses are likely to be negligible compared with microbiological effects. The effects of saponins on rumen fermentation have not been found to be consistent. These discrepancies appear to be related to the chemical structure and dosage of saponins, diet composition, microbial community and adaptation of microbiota to saponins. There is need for systematic research based on chemical structures of saponins, nutrient composition of diets and their effects on rumen microbial ecosystem to obtain consistent results. The present paper reviews and discusses the effects and mode of action of saponins on microbial community and fermentation in the rumen, and ruminant performance.

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“…Hristov et al (2012) found no effects of oregano inclusion on nutrient intake and total apparent digestibility of cows. Likewise, an oregano-based commercial product (Ropapharm Int, Ropadairy) included in sheep diets at 250 mg day -1 caused no effect on total nutrient digestibility Wang et al (2009).…”

Section: Resultsmentioning

confidence: 99%

Economic performance of dairy cows fed diets with different levels of oregano

Oliveira

Silva

Costa

et al. 2014

Acta Sci. Anim. Sci.

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ABSTRACT. This study aimed to evaluate the economic viability of using different levels of oregano in diets for lactating cows fed sugar cane. We used 12 crossbred Holstein x Zebu cows assigned to three 4 x 4 Latin squares. The four treatments consisted of different levels of oregano: oregano free-control diet (0%) and diets added with 0.8, 1.6, and 2.4% oregano. Diets were formulated to meet the requirements for maintenance and milk production of 15 kg day -1 . For economic analysis, we employed two economic indicators, net present value and internal rate of return. The total cost per animal and per liter of milk produced has increased with the inclusion of oregano. The inclusion of oregano was not effective for both productivity and profitability, with prices equal to R$ 0.87, 0.97, 1.09, 1.22, and R$ 0.78, 1.03, 1.28, and 1.52 of milk and concentrate, respectively for each level of inclusion. The internal rate of return was more advantageous when not adding oregano in the diet, indicating the viability of using oregano up to 0.8% inclusion to the diet of dairy cows under the conditions of this experiment. The net present value demonstrated that this investment is interesting for all discount rates used in the diet without the addition of oregano, pointing out that, in this treatment, the activity was feasible for any opportunity cost.Keywords: concentrate, milk, production.Avaliação econômica de vacas leiteiras submetidas à dieta com diferentes níveis de orégano RESUMO. Objetivou-se, com este estudo avaliar a viabilidade econômica de diferentes níveis de orégano nas dietas de vacas lactantes alimentadas com cana-de-açúcar. Utilizaram-se 12 vacas mestiças Holandês x Zebu, distribuídas em três quadrados latinos 4 x 4. Os quatro tratamentos foram constituídos de diferentes níveis de orégano, como se segue: dieta controle sem orégano (0%); dieta com 0,8; 1,6 e 2,4% de orégano. As dietas foram calculadas para suprir as exigências de mantença e produção de 15 kg de leite/dia. Utilizaram-se, para efeito de estudo da análise econômica, dois indicadores econômicos, valor presente líquido e taxa interna de retorno. O custo total por animal e por litro de leite produzido aumentou com a inclusão de orégano na dieta. A inclusão de orégano não foi eficiente tanto na produtividade quanto na lucratividade, com os preços iguais a R$ 0,87; 0,97; 1,09; 1,22 e R$ 0,78; 1,03; 1,28 e 1,52 de leite e concentrado, respectivamente para cada nível de inclusão. A taxa interna de retorno foi mais vantajosa quando não se utilizou orégano na dieta, sendo viável o uso de orégano até 0,8% de inclusão na dieta de vacas lactantes nas condições do presente experimento. O cálculo do valor presente líquido demonstrou que este investimento é interessante para todas as taxas de desconto utilizadas na dieta sem inclusão de orégano, demonstrando que, neste tratamento, a atividade foi viável a todo custo de oportunidade.Palavras-chave: concentrado, leite, produção.

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Influences of flavomycin, ropadiar, and saponin on nutrient digestibility, rumen fermentation, and methane emission from sheep

Cited by 145 publications

References 14 publications

The effect of Mediterranean thyme (<i>Thymbra spicata</i> L. var. spicata) essential oil on fattening performance and ruminal parameters in lamb

The effect of Mediterranean thyme (<i>Thymbra spicata</i> L. var. spicata) essential oil on fattening performance and ruminal parameters in lamb

The effect and mode of action of saponins on the microbial populations and fermentation in the rumen and ruminant production

<b>Economic performance of dairy cows fed diets with different levels of oregano

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