Effect of protein and ureic nitrogen concentration on milk protein yield

Authors

  • Alejandra Govea-Luciano Universidad Juárez Autónoma de Tabasco
  • Armando Gómez-Vázquez Universidad Juárez Autónoma de Tabasco
  • Juan Manuel Pinos-Rodrígez Facultad de Medicina Veterinaria y Zootecnia, Universidad Veracruzana
  • Jose Manuel Lorenzo-Rodríguez Centro Tecnológico de la Carne de Galicia
  • Ricardo Martínez-Martínez Universidad de Guadalajara-Centro. Universitario de la Costa Sur Autlán de Navarro
  • Adelaido Rafael Rojas-García Facultad de Medicina Veterinaria y Zootecnia No.2. Universidad Autónoma de Guerrero

DOI:

https://doi.org/10.19136/era.a8nII.2888

Abstract

We aimed to determine the effect of production level (low, medium and high) on milk protein (%), urea nitrogen concentrations (mg dL −1), and milk protein yield of dual- purpose cows (Bos taurus x Bos indicus). We allocated 30 multiparous cows to the following groups by daily milk production level: low (5.0 ± 1.4 kg), medium (7.5 ± 1.0 kg), and high (10.0 ± 1.4 kg). Urea nitrogen did not correlate with milk protein concentrations. Milk protein concentration decreased linearly (p < 0.05) as production level increased. Conversely, milk protein yield (kg day−1) increased linearly (p < 0.05) with production level. Milk urea nitrogen concentrations decreased quadratically (p < 0.05) as production level increased. Low-producing cows had the highest average urea nitrogen concentration. Medium- and high-producing cows had similarly low urea nitrogen concentrations (p > 0.05). Protein and nitrogen concentrations in dual-purpose cow milk are negatively associated with production levels. 

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Author Biography

  • Armando Gómez-Vázquez, Universidad Juárez Autónoma de Tabasco

    Profesor investigador. de la División Academica de Coencias Agropecuarias de la Universidad Juarez Autónoma de Tabasco. Especialista en Nutricion de Rumiantes.

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Published

2022-01-18

How to Cite

Govea-Luciano, A., Gómez-Vázquez, A., Pinos-Rodrígez, J. M. ., Lorenzo-Rodríguez, J. M., Martínez-Martínez, R. ., & Rojas-García, A. R. (2022). Effect of protein and ureic nitrogen concentration on milk protein yield. Ecosistemas Y Recursos Agropecuarios, 8(II). https://doi.org/10.19136/era.a8nII.2888

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