Productivity of different cow genetic groups in dual-purpose cattle production systems in south-eastern Mexico

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AudienciaPúblico en generales_ES
CoberturaMéxicoes_ES
Fecha de ingreso2026-10-05T16:32:56Z
Fecha de publicación2006-01-01
ResumenThe objective was to evaluate the effect of cow genetic group, nutritional level and their interaction on some economically important traits of dual-purpose herds managed under field conditions. Nine herds were monitored during a production cycle in Yucatan, Mexico. Herds were grouped into four nutritional levels (NL) based on the metabolizable energy (ME) apparently available on pasture, nutritional management, and milk production. Cows were classified into three genetic groups (GG): low (<= 25\%), middle (25-75\%) and high (<= 75\%) graded for Bos taurus inheritance. Total milk sold (TMS), days in milk (DIM), TMS adjusted to DIM within each NL (TMSA), body condition score (BCS) at calving, changes of BCS during lactation (CBCS), calf weaning weight (WW), age at weaning (AW), kg of calf weaned per cow (KWC) and calf mortality were studied. The statistical model included the fixed effects of NL, GG, month of calving (MC), parity number (PN) and BCS at calving and GG x NL interaction. The effects of NL, GG, MC, PN and GG x NL were significant (p < 0.05) for TMS, KWC. As expected, TMS increased with NL from 562.4 +/- 106 kg for NL1 to 2366.3 +/- 100.1 kg for NL4. KWC was greatest for NL2 (138.6 kg) followed by NL1 (135 kg); the lowest KWC corresponded to NL4 (96.0 kg) (p < 0.05). TMS values for the middle (1727 +/- 94.7 kg) and the high graded GG (1603.5 +/- 83.5 kg) were twice those for the low graded GG cows (828.5 +/- 95 kg) (p < 0.05). KWC was also higher for the middle graded group (152.8 kg) than for the low or (104 kg) or the high graded GG (118 kg) (p < 0.05). With better nutrition cows of all GG improved their milk performance but not the calf traits. CBCS was negative for all GG. The highest BCS lost was for cows in NL1 and NL2 and for cows in the high graded GG (p < 0.05).es_ES
Doihttps://doi.org/10.1007/s11250-006-4247-1es_ES
URIhttps://riuat.uat.edu.mx/handle/123456789/4777
Idiomaenes_ES
EditorialSPRINGERes_ES
RelaciónTropical Animal Health and Productiones_ES
URL relacionadohttps://doi.org/10.1007/s11250-006-4247-1es_ES
DerechosAcceso restringido / Suscripción (Metadatos de producción científica)es_ES
Licenciahttp://purl.org/coar/access_right/c_16eces_ES
FuenteTropical Animal Health and Production
Palabra clavegenetic groupes_ES
Palabra clavenutritional leveles_ES
Palabra clavedual-purpose systemes_ES
Palabra claveproductive traitses_ES
Palabra clavetropicses_ES
TítuloProductivity of different cow genetic groups in dual-purpose cattle production systems in south-eastern Mexicoes_ES
TipoArtículoes_ES
ArbitradoHa sido Arbitradoes_ES
AutorMagana, J. G.
AutorTewolde, A.
AutorAnderson, S.
AutorSegura, J. C.
AutorMagana, J. G.es_ES
AutorTewolde, A.es_ES
AutorAnderson, S.es_ES
AutorSegura, J. C.es_ES
InstituciónUniversidad Autónoma de Tamaulipas
InstituciónUniversidad Autónoma de Tamaulipases_ES
Número7-8es_ES
Rango de páginas583-591es_ES
URL relacionadahttps://doi.org/10.1007/s11250-006-4247-1
Tipo de artículoIndexado
Tipo de artículoIndexadoes_ES
Volumen38es_ES

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