Effects of tannins and saponins contained in foliage of Gliricidia sepium and pods of Enterolobium cyclocarpum on fermentation, methane emissions and rumen microbial population in crossbred heifers
| Autor: | Juan Carlos Ku-Vera, Jacobo Arango, Isabel Cristina Molina-Botero, Armín Ayala Burgos, Julian Arroyave-Jaramillo, Rolando Barahona-Rosales, Sara Stephanie Valencia-Salazar, Carlos Fernando Aguilar-Pérez |
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| Rok vydání: | 2019 |
| Předmět: |
0303 health sciences
education.field_of_study biology 030309 nutrition & dietetics Chemistry Population 0402 animal and dairy science 04 agricultural and veterinary sciences biology.organism_classification 040201 dairy & animal science Enterolobium 03 medical and health sciences Neutral Detergent Fiber Rumen Animal science Ruminant Animal Science and Zoology Dry matter Animal nutrition education Gliricidia sepium |
| Zdroj: | Animal Feed Science and Technology. 251:1-11 |
| ISSN: | 0377-8401 |
| DOI: | 10.1016/j.anifeedsci.2019.01.011 |
| Popis: | Incorporation of foliage and pods of tropical legumes in ruminant rations is an alternative to mitigate enteric methane emissions. The objective of this research was to evaluate the effect of adding increasing levels of ground pods of Enterolobium cyclocarpum (Jacq.) Griseb. mixed with foliage of Gliricidia sepium (Jacq.) Steud. on emissions of ruminal methane (CH4), volatile fatty acid proportions, rumen pH and microbial population in cattle. Four heifers (218 ± 18 kg LW) were fed (13 days) 0, 15, 30, and 45% of pods of E. cyclocarpum mixed with foliage of G. sepium, which were supplemented to a basal ration of Brachiaria brizantha (Hochst. ex A. Rich.) Stapf. Data were analyzed as a 4 × 4 Latin square. After three days of CH4 measurements in open-circuit respiration chambers, rumen fluid was collected to determine volatile fatty acid (VFA) molar proportions and quantify the microbial population. Samples of ration ingredients, refusals and feces were collected to evaluate nutrient composition. Foliage and pods of legumes provided crude protein (CP), condensed tannins (CT) and saponins, while grass was characterized by higher concentrations of neutral detergent fiber (NDF). Dry matter intake (DMI) was 5.35 kg/day on average (P = 0.272). Apparent fiber digestibility was reduced (81 g/kg) and digestible CP intake (13 g/kg) increased when E. cyclocarpum mixed with G. sepium in rations were given (P 0.05). Substitution of 15 and 30% of pods of E. cyclocarpum mixed with foliage of G. sepium in the ration, decreases annual methane emissions per unit product, without affecting dry matter intake or rumen microbial population, on the contrary, digestible CP intake and animal productivity increased due to supply of CP, CT and saponins. |
| Databáze: | OpenAIRE |
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