Artículos de revistas
Metabolic level recognition of progesterone in dairy Holstein cows using probabilistic models
Fecha
2014-05Registro en:
Turino, Ludmila Noelia; Cristaldi, Mariano Daniel; Mariano, Rodolfo Nicolás; Boimvaser, Sonia; Scandolo, D. E.; Metabolic level recognition of progesterone in dairy Holstein cows using probabilistic models; Spanish National Institute for Agriculture and Food Research and Technology; Spanish Journal Of Agricultural Research; 12; 2; 5-2014; 396-404
1695-971X
CONICET Digital
CONICET
Autor
Turino, Ludmila Noelia
Cristaldi, Mariano Daniel
Mariano, Rodolfo Nicolás
Boimvaser, Sonia
Scandolo, D. E.
Resumen
Administration of exogenous progesterone is widely used in hormonal protocols for estrous (re)synchronization of dairy cattle without regarding pharmacological issues for dose calculation. This happens because it is difficult to estimate the metabolic level of progesterone for each individual cow before administration. In the present contribution, progesterone pharmacokinetics has been determined in lactating Holstein cows with different milk production yields. A Bayesian approach has been implemented to build two probabilistic progesterone pharmacokinetic models for high and low yield dairy cows. Such models are based on a one-compartment Hill structure. Posterior probabilistic models have been structurally set up and parametric probability density functions have been empirically estimated. Moreover, a global sensitivity analysis has been done to know sensitivity profile of each model. Finally, posterior probabilistic models have adequately recognized cow´s progesterone metabolic level in a validation set when Kullback-Leibler based indices were used. These results suggest that milk yield may be a good index for estimating pharmacokinetic level of progesterone.