Metabolic and Productive Response and Grazing Behavior of Lactating Dairy Cows Supplemented with High Moisture Maize or Cracked Wheat Grazing at Two Herbage Allowances in Spring

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:33:38Z
Fecha de publicación2021-01-01
ResumenSimple Summary Energy supplements such as high moisture maize or cracked wheat increase total dry matter intake (DMI) and dairy cow performance compared to pasture-only diets. However, the effectiveness of such a feeding strategy depends upon the level of herbage allowance (HA). In this study, increasing HA from 20 to 30 kg DM/cow had no effect on milk production but increased the concentration of urea in milk and plasma regardless of the type of energy supplement offered to grazing dairy cows. These results demonstrate that in high-quality pasture, low HA is appropriate to improve milk production performance per cow and per hectare. The aim was to determine the effect of the herbage allowance (HA) and supplement type (ST) on dry matter intake (DMI), milk production and composition, grazing behavior, rumen function, and blood metabolites of grazing dairy cows in the spring season. Experiment I: 64 Holstein Friesian dairy cows were distributed in a factorial design that tested two levels of daily HA (20 and 30 kg of dry matter (DM) per cow) and two ST (high moisture maize (HMM) and cracked wheat (CW)) distributed in two daily rations (3.5 kg DM/cow/day). Experiment II: four mid-lactation rumen cannulated cows, supplemented with either HMM or CW and managed with the two HAs, were distributed in a Latin square design of 4 x 4, for four 14-d periods to assess ruminal fermentation parameters. HA had no effect on milk production (averaging 23.6 kg/day) or milk fat and protein production (823 g/day and 800 g/day, respectively). Cows supplemented with CW had greater protein concentration (+1.2 g/kg). Herbage DMI averaged 14.17 kg DM/cow.day and total DMI averaged 17.67 kg DM/cow.day and did not differ between treatments. Grazing behavior activities (grazing, rumination, and idling times) and body condition score (BCS) were not affected by HA or ST. Milk and plasma urea concentration increased under the high HA (+0.68 mmol/L and +0.90 mmol/L, respectively). Cows supplemented with HMM had lower milk and plasma urea concentrations (0.72 mmol/L and 0.76 mmol/L less, respectively) and tended (p = 0.054) to have higher plasma beta-hydroxybutyrate. Ruminal parameters did not differ between treatments.es_ES
Doihttps://doi.org/10.3390/ani11040919es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/5423
Idiomaenes_ES
EditorialMDPIes_ES
RelaciónAnimalses_ES
URL relacionadohttps://doi.org/10.3390/ani11040919es_ES
DerechosAcceso abierto (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_abf2es_ES
FuenteAnimals
Palabra claveenergy supplementationes_ES
Palabra clavegrazing managementes_ES
Palabra clavemilk productiones_ES
Palabra clavemetabolic responsees_ES
Palabra claveruminal functiones_ES
TítuloMetabolic and Productive Response and Grazing Behavior of Lactating Dairy Cows Supplemented with High Moisture Maize or Cracked Wheat Grazing at Two Herbage Allowances in Springes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorMerino, Veronica M.
AutorLeichtle, Lorena
AutorBalocchi, Oscar A.
AutorLanuza, Francisco
AutorParga, Julian
AutorDelagarde, Remy
AutorRuiz-Albarran, Miguel
AutorRivero, M. Jordana
AutorPulido, Ruben G.
AutorMerino, Veronica M.es_ES
AutorLeichtle, Lorenaes_ES
AutorBalocchi, Oscar A.es_ES
AutorLanuza, Franciscoes_ES
AutorParga, Julianes_ES
AutorDelagarde, Remyes_ES
AutorRuiz-Albarran, Migueles_ES
AutorRivero, M. Jordanaes_ES
AutorPulido, Ruben G.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número4es_ES
URL relacionadahttps://doi.org/10.3390/ani11040919
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen11es_ES

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