Age and weight at puberty in tropical dairy criollo heifers with and without supplementary feeding

Autores/as

  • Víctor Hugo Severino-Lendechy Universidad Autónoma de Chiapas
  • Felipe Montiel-Palacios Facultad de Medicina Veterinaria y Zootecnia, Universidad Veracruzana
  • Ponciano Pérez-Hernández Colegio de Postgraduados, Campus Veracruz

DOI:

https://doi.org/10.19136/era.a4n12.1195

Palabras clave:

CLT, dinámica folicular, estro, nutrición, ovulación.

Resumen

The e ect of supplementary feeding on age and weight at puberty was evaluated in 79 pre-pubertal Tropical Dairy Criollo (TDC) heifers of 8 and 10 months of age, distributed in four treatments: T1 and T2) 8 month old heifers with and without supplementary feeding (WSF, n= 20) and (NSF, n= 20), respectively; T3 and T4) 10 month old heifers (WSF, n= 20) and (NSF, n= 19). Average age and weight at puberty in T2 and T4 was 20.4 ± 0.5 months and 287.2 ± 5.9 kg compared with 17.5 ± 0.6 months and 296.8 ± 7.8 kg in T1 and T3 (p < 0.05). The number, follicular diameter (mm) and concentration of progesterone (ng mL−1) in blood was higher (p < 0.05) in T1 and T3 compared to T2 and T4. Supplementary feeding decreases the age at puberty, increases weight gain, improves follicular development and increases blood progesterone concentration in TDC females.

Biografía del autor/a

Víctor Hugo Severino-Lendechy, Universidad Autónoma de Chiapas

Producción Animal-Profesor Investigador

Descargas

Publicado

2017-09-02

Cómo citar

Severino-Lendechy, V. H., Montiel-Palacios, F., & Pérez-Hernández, P. (2017). Age and weight at puberty in tropical dairy criollo heifers with and without supplementary feeding. Ecosistemas Y Recursos Agropecuarios, 4(12), 555-561. https://doi.org/10.19136/era.a4n12.1195

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