Effect of regrowth age and time of year on cell wall components and in vitro digestibility of grasses (PART II).
Guardado en:
| Autores: | , , , , , |
|---|---|
| Formato: | artículo original |
| Estado: | Versión publicada |
| Fecha de Publicación: | 2022 |
| Descripción: | The study consisted of evaluating seven species of grasses at different regrowth ages and times of the year (dry season and rainy season), in three different agroclimatic zones of Costa Rica. A 7x2x4 factorial design (forage species, season, and regrowth age) was used with 3 repetitions for 168 experimental units. The concentration of neutral detergent fiber (NDF), acid detergent fiber (ADF), lignin (LIG), in vitro digestibility of dry matter (IVDDM), and in vitro digestibility of neutral detergent fiber (dNDF) were evaluated. In the high zone, the Kikuyuocloa clandestinum and Lolium perenne grasses were evaluated, where the highest content of LIG (10.5%) was presented in the K. clandestinum grass with 14 days of regrowth in the dry season (triple interaction, p<0.01). The L. perennial grass showed the highest IVDDM content (81.1%) at 28 days of regrowth in the dry season (triple interaction, p<0.01). In the intermediate zone, the Cynodon nlemfuensis grass was evaluated, where the highest concentration of ADF (37.2%) appeared at 28 days of regrowth in the dry season (double interaction, p<0.01), and the highest content of dNDF (72.9%) at 14 days of regrowth during the rainy season (double interaction, p<0.01). The following pastures were evaluated in the lower zone: Brachiaria brizantha cv. diamonds, Panicum maximum cv. mombaza, Ischaemum indicum, and Brachiaria brizantha cv. toledo, where the highest content of LIG (9.7%) was found in I. indicum grass after 14 days of regrowth during the dry season (triple interaction, p <0.01), the highest DIVMS (70.5%) occurred at 14 and 28 days of regrowth in the rainy season in diamond grass (triple interaction, p<0.01). |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Lenguaje: | Español |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/52729 |
| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/nutrianimal/article/view/52729 |
| Palabra clave: | alimentación rumiantes composición bromatológica pasturas de piso digestibilidad in vitro de la materia seca digestibilidad in vitro de la fibra neutro detergente feeding ruminants bromatological composition pastures in vitro digestibility of dry matter in vitro digestibility of neutral detergent fiber |