Influence of level and form of supplemental zinc on feedlot growth performance and carcass characteristics of calf-fed Holstein steers

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:34:22Z
Fecha de publicación2017-01-01
ResumenThe objectives of this study were to evaluate the influence of level and source of supplemental Zn on growth performance and dietary energetics in calf-fed Holstein steers. A total of 168 steers (BW = 133 ± 7 kg) were used in a 336-d study. Treatments consisted of diets based on steam-flaked corn supplemented with (DM basis) (1) 20 mg of Zn/kg of DM as ZnSO<sub>4</sub>; (2) 10 mg of Zn/kg of DM as ZnSO<sub>4</sub> plus 10 mg of Zn/kg of DM as Zn betaine; (3) 20 mg of Zn/kg of DM as Zn betaine; or (4) 40 mg of Zn/kg of DM as ZnSO<sub>4</sub>. Overall (d 1 to 336) there were no treatment effects (P > 0.10) on carcass-adjusted ADG, gain efficiency, and estimated dietary NE. At the 20 mg/kg level of Zn supplementation, the proportion of supplemental Zn provided as chelate did not influence overall ADG, gain efficiency, or dietary NE (P > 0.10). The proportion of Zn supplemented as chelate did not affect (P > 0.10) carcass weight, KPH, LM area, or marbling score. However, DP was greater (quadratic effect, P = 0.01) for steers receiving the 50:50 blend of ZnSO<sub>4</sub> and Zn betaine. Carcass yield grade improved (linear component, P = 0.03) with proportion of supplemental Zn as chelate. We conclude that at a 20 mg/kg (DM basis) level of supplementation, Zn source does not affect growth performance of calf-fed Holstein steers. Increasing level of Zn supplementation (as ZnSO<sub>4</sub>) from 20 to 40 mg/kg will not further enhance overall performance responses.es_ES
Doihttps://doi.org/10.15232/pas.2017-01640es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/6117
Idiomaenes_ES
EditorialElsevier Inces_ES
RelaciónProfessional Animal Scientistes_ES
URL relacionadohttps://doi.org/10.15232/pas.2017-01640es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteProfessional Animal Scientist
Palabra clavefeedlotes_ES
Palabra clavegrowthes_ES
Palabra claveHolsteines_ES
Palabra claveperformancees_ES
Palabra clavezinces_ES
TítuloInfluence of level and form of supplemental zinc on feedlot growth performance and carcass characteristics of calf-fed Holstein steerses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorMontano, M.F.
AutorPlascencia, A.
AutorSalinas-Chavira, J.
AutorTorrentera, N.
AutorZinn, R.A.
AutorMontano, M.F.es_ES
AutorPlascencia, A.es_ES
AutorSalinas-Chavira, J.es_ES
AutorTorrentera, N.es_ES
AutorZinn, R.A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número6es_ES
Rango de páginas651-658es_ES
URL relacionadahttps://doi.org/10.15232/pas.2017-01640
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen33es_ES

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