Supplementation of yearlings Cuban Charolais grazing multiple associations of herbaceous legumes and tropical grasses
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Abstract
(19.80 % CP and 13.79 MJ kg-1 DM of ME) and other, with energy-mineral supplementation (11 % CP and 13.58 ME, MJ kg-1 DM), at a rate of 2.50 kg animal d. The animals consuming the energy-mineral supplement had LW gains superior (P < 0.01) in respect to those receiving the energy-protein-mineral source, of 1011 and 954 g animal d-1, respectively. Besides, the pastures availability, in function of the grazing pressure (14.60 kg of DM per each 100 kg of LW), satisfied the daily ingestion capacity of DM of the animals. The protein-energy composition (12.70 % of CP and 10.68 MJ of ME kg-1 of DM) of the energy-mineral supplement and its nutritive value covered the nutritional requirements.
In the animals consuming this supplementation source, the ratio total nitrogen-ME was better. The inclusion of the energy-mineral supplement favores the pasture of grasses and multiple tree legumes, predominating legumes during the rainy season, for the yearlings Cuban Charolais.
Key words: bovines, meat, Charolais, legumes, maize, soybean
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