| Autor: |
Guidsam Tilus, R.A. Zinn, M. Joseph, Alfonso Juventino Chay Canul, J. Santillano-Cazares, M. Galicia-Juarez, M.L. Tilus, D. Tilus, E.E. Estrada-Delgado, M.F. Montaño-Gomez |
| Jazyk: |
English<br />Spanish; Castilian |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Tropical and Subtropical Agroecosystems, Vol 25, Iss 2 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
1870-0462 |
| DOI: |
10.56369/tsaes.3664 |
| Popis: |
Background. The intensity and grazing interval are two very important factors in the management of grasslands that can affect the morphological and productive behavior of the forage species. Due to its productivity and persistence to grazing, ryegrass (Lolium multiflorum Lamb.) is the main source of pasture for backgrounding cattle during winter-spring in northwestern México. Therefore, it is important to generate knowledge of established pasture with grasses to generate information that will serve producers to improve the economic profitability of livestock activities. Objective. The objective of this study was to evaluate the influence of grazing intensity (GI) and grazing interval (GIv) on forage yield, elongation rate and botanical composition of ryegrass, under ambient conditions of this arid region. Hypothesis. It is evident to observe that GIv and GI modify the forage yield, elongation rate and botanical composition of L. multiflorum established in irrigated grassland in temperate climate zones. Methodology. The study involved 1008 crossed bull calves (Bos indicus ˣ Bos taurus) of 16 months of age. Calves were distributed in a 3 ˣ 2 factorial arrangement in an RCB design, with three repetitions. Three GIv (21, 28 and 35-d) and two GI (grazed to 4 to 6 cm vs 10 to 12 cm) were evaluated. This 105-d trial was initiated on January 16, 2019, 90 days post-planting and finished on May 01, 2019, using an intensive grazing system with stocking rate of 56 calves per ha. The main effects of grazing interval were evaluated by means of orthogonal polynomials. Results. Forage yield increased linearly (P |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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