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.

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Biografía del autor/a

Víctor Hugo Severino-Lendechy, Universidad Autónoma de Chiapas

Producción Animal-Profesor Investigador

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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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