Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/22943
Tipo: Artigo
Título: Supplementation strategies for Nellore female calves in creep feeding to improve the performance: nutritional and metabolic responses
Autor(es): Almeida, Daniel Mageste de
Marcondes, Marcos Inácio
Rennó, Luciana Navajas
Martins, Leandro Soares
Marquez, David Esteban Contreras
Villadiego, Faider Castaño
Saldarriaga, Felipe Velez
Ortega, Román Maza
Moreno, Deilen Paff Sotelo
Lopes, Sidnei Antônio
Cardozo, Manuela Acevedo
Paulino, Mário Fonseca
Abstract: The objective of this study was to evaluate the effects of supplementation strategy on performance, nutritional and metabolic characteristics of Nellore suckling female calves, on grazing Urochloa decumbens during the rainy-dry transition period. Forty-four Nellore female calves, averaging 147.6 ± 1.34 kg (4 months), were used. A single supplement 20% of crude protein of dry matter was provided, consisting of daily supplement at 0.0, 0.2, 0.4, or 0.6% of body weight. A positive linear effect (P < 0.05) on final body weight and average weight gain of female calves was observed with increased supplementation. Supplementation increased consumption, in kilograms per day, of dry matter (DM), organic matter (OM), crude protein (CP), digested dry matter, and total digestible nutrients (TDN), all calculated as % of dry matter. There was no effect of supplementation on the consumption in kilograms per day of neutral detergent fiber corrected for ash and protein (apNDF) (P > 0.05). Supplementation increased, in a quadratic way, the total apparent digestibility coefficient of DM, OM, CP, apNDF, and TDN (P < 0.05). There was no effect of supplementation (P > 0.05) on non-esterified fatty acid concentrations. There was a positive linear effect (P < 0.05) of supplementation on insulin concentrations. In this study, it is concluded that linearly increasing the feeding level of a supplement with 20% crude protein (% of DM) in the range of 0.2–0.6% of body weight improves the performance, nutritional and metabolic characteristics of the animals, considering these pasture characteristics.
Palavras-chave: Bos indicus
Creep feeding
Insulin
Tropical pasture
Editor: Tropical Animal Health and Production
Tipo de Acesso: Springer Science+Business Media B.V., part of Springer Nature 2018
URI: https://doi.org/10.1007/s11250-018-1619-2
http://www.locus.ufv.br/handle/123456789/22943
Data do documento: Dez-2018
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