Effect of tannins-rich extract from Acacia mearnsii or monensin as feed additives on ruminal fermentation efficiency in cattle
| Autor: | C. T. Marino, Lerner Arévalo Pinedo, Paulo Henrique Mazza Rodrigues, D.C.V. Zapata, Maurício Furlan Martins, L.A.S. Romero, Eduardo Cuelar Orlandi Cassiano, F. Perna Junior |
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| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
chemistry.chemical_classification General Veterinary biology Chemistry Feed additive Monensin 0402 animal and dairy science 04 agricultural and veterinary sciences biology.organism_classification 040201 dairy & animal science Acacia mearnsii 03 medical and health sciences chemistry.chemical_compound Rumen 030104 developmental biology Animal science Latin square Botany ALIMENTOS VEGETAIS PARA ANIMAIS Tannin Animal Science and Zoology Fermentation Dry matter |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP |
| ISSN: | 1871-1413 |
| Popis: | Methane, a powerful greenhouse gas, is considered to be a significant loss of productive potential in ruminants. The objective was to evaluate the effect of monensin and Acacia mearnsii tannins on ruminal fermentation efficiency in cattle. Six rumen-cannulated cows were distributed three diets, each of which differed in the additive used, in a replicated 3×3 Latin square experimental design. Treatments were the Control, Monensin (300 mg per animal and day or about 18 mg/kg of dry matter - DM) and a tannin-rich extract from Acacia mearnsii (100 g per animal and day or about 0.6% of DM). Each experimental period consisted of 21 days; the first 15 days were used for diet adaptation and the last 5 days for data collection. On experimental day 21, ruminal pH was analyzed by a continuous measurement probe. In order to quantify short-chain fatty acids (SCFA), methane (CH 4 ), NH 3 -N (ammonia nitrogen) production, protozoa and the ruminal dynamics, rumen contents were sampled prior to and 3, 6, 9 and 12 h after morning feeding. The fermentation technique consisted of incubation of liquid and solid rumen contents in bottles in a water bath (39 °C) for 30 min. Subsequent measurement of methane production was made using gas chromatography and used for the final estimation of Relative Energy Loss (REL). There was no effect (P>0.05) of additives on pH, ruminal DM disappearance rate, the concentrations of NH 3 -N, the production of acetic or butyric acids or the total ruminal SCFA. Monensin treatment was responsible for reducing CH 4 production by 10.7%, whereas tannin inclusion reduced it by 8.0%, when compared to the control treatment. The REL was decreased (P |
| Databáze: | OpenAIRE |
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