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dc.creatorMiguel,José A
dc.creatorMelendez,Sandy J
dc.creatorAsenjo,Begoña
dc.creatorBonilla,Luis M
dc.creatorCiria,Jesús
dc.date2012-08-01
dc.date.accessioned2019-05-17T13:11:38Z
dc.date.available2019-05-17T13:11:38Z
dc.identifierhttps://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200004
dc.identifier.urihttps://revistaschilenas.uchile.cl/handle/2250/98045
dc.descriptionIn this paper, parameters that describe growth, as a function of the season in which they were born (dry or rainy), are presented for males of the for males of the Brahman breed that were castrated at birth and raised in their native environment in the intense system of the Llano Venezolano. Data are presented for 1,478 Brahman males that were castrated at birth. Of these, 750 were born in the months of June and July (the rainy season) and 728 were born in January and February (the dry season). The animals born during the dry season were heavier up until the beginning of the fattening period; after weaning, the greatest average daily weight gain coincided in both groups during rainy periods when the pasture production was greater. When comparing the observed weights with the estimates, the Brody model was better at estimating the actual weight of the animals at birth, weaning and maturity in both seasons of birth. The Gompertz, Bertalanffy, Richards and Logistic models overestimated the weights of the animals at birth and at the end of the fattening period; however, they underestimated the weights at weaning and maturity for both birth seasons. Regarding the birth season, no differences were found in the estimated maturation rate for any of the models, although there were differences among the models for the same season of birth.
dc.formattext/html
dc.languageen
dc.publisherPontificia Universidad Católica de Chile. Facultad de Agronomía e Ingeniería Forestal
dc.relation10.4067/S0718-16202012000200004
dc.rightsinfo:eu-repo/semantics/openAccess
dc.sourceCiencia e investigación agraria v.39 n.2 2012
dc.subjectBertalanffy model
dc.subjectBrahman cattle
dc.subjectBrody model
dc.subjectGompertz model
dc.subjectgrowth curves
dc.subjectlogistic model
dc.subjectRichards model
dc.titleGrowth modeling of castrated Brahman males raised in tropical conditions and born in different seasons


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