Short communication: Genetic analysis of lactation curves in buffaloes, using Wood’s model

• Carvalho, Ludmilla A. Marques de ^[3] ; Moura, Guilherme F. de ^[3] ; Vieira, Dheynne A. ^[3] ; Hurtado-Lugo, Naudin A. ^[1] ; Aspilcueta-Borquis, Rusbel R. ^[2] ; Gomide, Ana P. C. ^[3] ; Tonhati, Humberto ^[2] ; Oliveira, Henrique N. de ^[2] ; Araujo-Neto, Francisco R. de ^[3]
  1. [1] Universidad Francisco de Paula Santander

     Universidad Francisco de Paula Santander

     Colombia

     
  2. [2] Universidade Estadual Paulista

     Universidade Estadual Paulista

     Brasil

     
  3. [3] Instituto Federal de Educação, Ciência e Tecnologia Goiano (IF Goiano), Campus Rio Verde, Rodovia Sul Goiana, Km 01. 75901-970 Rio Verde, Goiás

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• Localización: Spanish journal of agricultural research, ISSN-e 2171-9292, ISSN 1695-971X, Vol. 18, Nº. 3, 2020
• Idioma: inglés
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• Resumen

  • Aim of study: To estimate the heritability and genetic correlations for lactation curve traits in buffaloes.Area of study: The buffalo cows were raised on properties located in the states of São Paulo, Ceará and Rio Grande do Norte, Brazil.Material and methods: The individual parameters of Wood’s model ( , , and ) were obtained using a non-linear mixed model. Peak yield (PY), peak time (PT) and lactation persistency (LP) were also calculated. These individual parameters were employed in multi-trait analysis with the milk yield (MY) using Bayesian inference.Main results: The heritability estimates were of low to moderate magnitudes, with values ranging from 0.156 ( ) to 0.299 (PY). The estimates for genetic correlation between the Wood’s parameters and MY were of low to high magnitude and ranged from -0.533 (  and MY) to 0.983 (PY and MY).Research highlights: The heritability estimates obtained indicate that the traits studied can be used in animal breeding programs.