Delay implant strategy in calf-fed Holstein steers: Growth performance and carcass characteristics

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:34:19Z
Fecha de publicación2017-01-01
ResumenThe influence of live weight (LW) at first implanting on growth performance and carcass characteristics was evaluated in calf-fed Holstein fed a steam-flaked corn-based diet. Treatments were: (1) control (not implanted); (2) first implanted at 267 kg LW; (3) first implanted at 291 kg LW, and (4) first implanted at 321 kg LW. All implanted cattle were re-implanted on d-112 of trial. Both the initial and final implants contained 120 mg of trenbolone acetate and 24 mg of oestradiol. Compared with non-implanted controls, implanting increased (P <.01) overall dry matter intake (DMI, 5.9%), average daily gain (ADG,16.7%), gain efficiency (ADG:DMI; 9.4%), and estimated dietary net energy for maintenance (NE<sub>m</sub>, 8.6%) and gain (NE<sub>g</sub>, 9.7%). Increasing LW at first implanting decreased overall DMI (linear effect; P =.01), but did not affect overall ADG (P =.17) or gain efficiency (P =.32). Within the range of 267–321 kg, weight at first implanting did not affect growth-performance or carcass characteristics. Interval growth performance of implanted and non-implanted calves was a predictable function of LW.es_ES
Doihttps://doi.org/10.1080/09712119.2016.1210012es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/6102
Idiomaenes_ES
EditorialTaylor and Francis Ltd.es_ES
RelaciónJournal of Applied Animal Researches_ES
URL relacionadohttps://doi.org/10.1080/09712119.2016.1210012es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteJournal of Applied Animal Research
Palabra claveFeedlotes_ES
Palabra claveHolstein cattlees_ES
Palabra claveImplantses_ES
Palabra clavePerformancees_ES
TítuloDelay implant strategy in calf-fed Holstein steers: Growth performance and carcass characteristicses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorTorrentera, Noemi
AutorBarreras, Alberto
AutorGonzalez, Victor
AutorPlascencia, A.
AutorSalinas, Jaime
AutorZinn, Richard Avery
AutorTorrentera, Noemies_ES
AutorBarreras, Albertoes_ES
AutorGonzalez, Victores_ES
AutorPlascencia, A.es_ES
AutorSalinas, Jaimees_ES
AutorZinn, Richard Averyes_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1es_ES
Rango de páginas454-459es_ES
URL relacionadahttps://doi.org/10.1080/09712119.2016.1210012
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen45es_ES

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