Evaluation of lactation curve of low-yielding gir cows: a Bayesian approach
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Universidade Estadual de Maringá
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The Bayesian methodology was used to fit the Wood function for milk production of low-yielding Gir cows with five lactation length: shorter than 228 days (group 1), of 229 to 269 days (group 2), of 270 to 293 days (group 3), of 294 to 304 days (group 4) and longer than 305 days (group 5). The presented procedure provides precise estimates for parameters of lactation curve and permitted a direct comparison between lactations curves by evaluation of HPD interval for marginal posterior density of the difference between parameters. These results didn't show significance, accomplishing that the lactation length doesn't affect shape of curves.
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