Effects of increasing nitrogen levels in Mombasa grass on pasture characteristics, chemical composition, and beef cattle performance in the humid tropics of the Amazon
| Autor: | Fabrícia Rocha Chaves Miotto, Ithálo Barros de Freitas, José Neuman Miranda Neiva, João Restle, Rafael de Oliveira da Silva, Luis Felipe Felix Monteiro da Silva, Vera Lúcia de Araújo |
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| Rok vydání: | 2020 |
| Předmět: |
Male
040301 veterinary sciences Nitrogen Randomized block design Forage Beef cattle Biology Poaceae Pasture 0403 veterinary science Animal science Food Animals Grazing medicine Animals geography Tropical Climate geography.geographical_feature_category 0402 animal and dairy science 04 agricultural and veterinary sciences South America biology.organism_classification 040201 dairy & animal science Animal Feed Diet Neutral Detergent Fiber Megathyrsus maximus Animal Science and Zoology Cattle Seasons medicine.symptom Weight gain |
| Zdroj: | Tropical animal health and production. 52(6) |
| ISSN: | 1573-7438 |
| Popis: | Improving beef cattle production in pasture-based systems without expanding agricultural land has been the focus of several studies over the last decades. Nitrogen fertilization is one of the available strategies with high potential to optimize cattle performance in tropical systems. This study aimed to evaluate the effects of increasing nitrogen levels (150, 300, and 450 kg ha−1 of N year−1) in Megathyrsus maximus cv. Mombasa in the humid tropics of the Amazon. The following parameters were evaluated: pasture agronomic characteristics, herbage chemical composition, and beef cattle performance. A total of 24 nine-month-old Nellore bulls with initial mean weight of 173 ± 1.95 kg were used for the performance test. The experimental design was a randomized block with three treatments. Herbage mass and leaf mass contents were increased by the highest nitrogen level (P |
| Databáze: | OpenAIRE |
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