Influence of arrival weight of Holstein steers of similar age on feedlot growth performance, dietary energetics, and carcass characteristics

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:25Z
Fecha de publicación2022-01-01
ResumenObjective: Evaluate the effect of arrival weight on feedlot growth performance and carcass characteristics of Holstein steers of similar age. Material and Methods: Three hundred calf-fed Holstein steers (age 113 +/- 1-day) were distributed in a completely randomly unbalanced design and divided into five categories (105, 112, 117, 123, and 129 kg) of shrunk initial weight (SIW). Calves were weighed on days 1, 112, 224, and 361. Calves were fed steam-flaked corn-based diets. Growth performance and dietary energy were evaluated for each period and the study as a whole (1-361-day). Results: During the rearing period, average daily gain (ADG) increased (linearly effect, p < 0.01) with increasing birth weight. Birthweight was positively associated (p < 0.05) with feedlot arrival weight (R-2 = 0.47) and final harvest weight (R-2 = 0.36). Overall ADG increased (p < 0.01) with increasing SIW. Dry matter intake increased linearly during the first 224-day but quadratically during the last 137 days. Overall, there was a quadratic effect (p < 0.05) of SIW on gain-to-feed and observed-to-expected dietary NE, with lower efficiencies (4\%) for steers in both the lightest and heaviest SIW. Hot carcass weight, Longissimus muscle area, marbling score, and fat thickness increased (linear effect, p <= 0.03) as SIW increased, whereas kidney-pelvic-heart fat and yieldgrade were unaffected. Conclusions: The initial arrival weight influences the growth performance, energetic efficiency, and carcass characteristics of Holstein steers of similar age. The effect is more pronounced in the lighter (<112 kg) steers.es_ES
Doihttps://doi.org/10.5455/javar.2022.i569es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5256
Idiomaenes_ES
EditorialNETWORK VETERINARIANS BANGLADESHes_ES
RelaciónJournal of Advanced Veterinary and Animal Researches_ES
URL relacionadohttps://doi.org/10.5455/javar.2022.i569es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteJournal of Advanced Veterinary and Animal Research
Palabra claveArrival weightes_ES
Palabra clavefeedlotes_ES
Palabra claveHolsteines_ES
Palabra claveperformancees_ES
Palabra clavecarcasses_ES
TítuloInfluence of arrival weight of Holstein steers of similar age on feedlot growth performance, dietary energetics, and carcass characteristicses_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorFlores, Rodrigo
AutorPlascencia, Alejandro
AutorBarreras, Alberto
AutorSalinas-Chavira, Jaime
AutorTorrentera, Noem
AutorZinn, Richard A.
AutorFlores, Rodrigoes_ES
AutorPlascencia, Alejandroes_ES
AutorBarreras, Albertoes_ES
AutorSalinas-Chavira, Jaimees_ES
AutorTorrentera, Noemes_ES
AutorZinn, Richard A.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número1es_ES
Rango de páginas59-65es_ES
URL relacionadahttps://doi.org/10.5455/javar.2022.i569
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen9es_ES

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