Relationship between body and testicular measurements in young buffalo bulls in Cuba

Background: appropriate selection of sires holds great importance in plans to genetically improve and raise buffalos. Objective: to obtain a statistical model that provides accurate associations between body and testicular measurements intended for selection of Bufalypso breed sires. Methods: measur...

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Autores principales:	Yanara Almaguer, Harold Font, Suitberto Cabrera, Yaritza Arias
Formato:	article
Lenguaje:	EN
Publicado:	Universidad de Antioquia 2017
Materias:	body weight modeling nonlinear regression scrotal circumference thoracic perimeter Animal culture SF1-1100
Acceso en línea:	https://doaj.org/article/7b3a5047931a4308b6928a6f5828612e
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spelling	oai:doaj.org-article:7b3a5047931a4308b6928a6f5828612e2021-11-26T19:19:23ZRelationship between body and testicular measurements in young buffalo bulls in Cuba2256-295810.17533/udea.rccp.v30n2a05https://doaj.org/article/7b3a5047931a4308b6928a6f5828612e2017-04-01T00:00:00Zhttps://revistas.udea.edu.co/index.php/rccp/article/view/327336https://doaj.org/toc/2256-2958Background: appropriate selection of sires holds great importance in plans to genetically improve and raise buffalos. Objective: to obtain a statistical model that provides accurate associations between body and testicular measurements intended for selection of Bufalypso breed sires. Methods: measurements of body weight (BW), thoracic perimeter (TP), and scrotal circumference (SC) from 649 buffalos aged 2 to 36 months, were used to obtain the models corresponding to the associations between these traits. The statistical significance of the model and the model’s parameters were evaluated using a one-way analysis of variance. The best-fit model was established by calculating determination coefficients (R2) and mean squared error (SE). Results: the most adequate regression model between thoracic perimeter and body weight was TP = 19.89BW0.37, with 99% and 0.03 for R2 and, SE, respectively. The best association between scrotal circumference and body weight was obtained with the model SC = 1.13BW0.51, with values of 89% for R2 and of 0.1 for SE. The model that best expressed the relationship between scrotal circumference and thoracic perimeter was SC = 0.02*TP0.89, with R2 = 89% and SE = 0.01. Conclusion: nonlinear models described better the association between body and testicular measurements than the linear ones. These results suggest that nonlinear models are effective for selecting buffalo sires. Keywords: , . Resumen Palabras clave: circunferencia escrotal, modelación, perímetro torácico, peso corporal, regresión no lineal. Resumo Palavras chave: circunferência escrotal, modelagem, perímetro torácico, peso corporal, regressão nãolinear.Yanara AlmaguerHarold FontSuitberto CabreraYaritza AriasUniversidad de Antioquiaarticlebody weightmodelingnonlinear regressionscrotal circumferencethoracic perimeterAnimal cultureSF1-1100ENRevista Colombiana de Ciencias Pecuarias, Vol 30, Iss 2, Pp 138-146 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	body weight modeling nonlinear regression scrotal circumference thoracic perimeter Animal culture SF1-1100
spellingShingle	body weight modeling nonlinear regression scrotal circumference thoracic perimeter Animal culture SF1-1100 Yanara Almaguer Harold Font Suitberto Cabrera Yaritza Arias Relationship between body and testicular measurements in young buffalo bulls in Cuba
description	Background: appropriate selection of sires holds great importance in plans to genetically improve and raise buffalos. Objective: to obtain a statistical model that provides accurate associations between body and testicular measurements intended for selection of Bufalypso breed sires. Methods: measurements of body weight (BW), thoracic perimeter (TP), and scrotal circumference (SC) from 649 buffalos aged 2 to 36 months, were used to obtain the models corresponding to the associations between these traits. The statistical significance of the model and the model’s parameters were evaluated using a one-way analysis of variance. The best-fit model was established by calculating determination coefficients (R2) and mean squared error (SE). Results: the most adequate regression model between thoracic perimeter and body weight was TP = 19.89BW0.37, with 99% and 0.03 for R2 and, SE, respectively. The best association between scrotal circumference and body weight was obtained with the model SC = 1.13BW0.51, with values of 89% for R2 and of 0.1 for SE. The model that best expressed the relationship between scrotal circumference and thoracic perimeter was SC = 0.02*TP0.89, with R2 = 89% and SE = 0.01. Conclusion: nonlinear models described better the association between body and testicular measurements than the linear ones. These results suggest that nonlinear models are effective for selecting buffalo sires. Keywords: , . Resumen Palabras clave: circunferencia escrotal, modelación, perímetro torácico, peso corporal, regresión no lineal. Resumo Palavras chave: circunferência escrotal, modelagem, perímetro torácico, peso corporal, regressão nãolinear.
format	article
author	Yanara Almaguer Harold Font Suitberto Cabrera Yaritza Arias
author_facet	Yanara Almaguer Harold Font Suitberto Cabrera Yaritza Arias
author_sort	Yanara Almaguer
title	Relationship between body and testicular measurements in young buffalo bulls in Cuba
title_short	Relationship between body and testicular measurements in young buffalo bulls in Cuba
title_full	Relationship between body and testicular measurements in young buffalo bulls in Cuba
title_fullStr	Relationship between body and testicular measurements in young buffalo bulls in Cuba
title_full_unstemmed	Relationship between body and testicular measurements in young buffalo bulls in Cuba
title_sort	relationship between body and testicular measurements in young buffalo bulls in cuba
publisher	Universidad de Antioquia
publishDate	2017
url	https://doaj.org/article/7b3a5047931a4308b6928a6f5828612e
work_keys_str_mv	AT yanaraalmaguer relationshipbetweenbodyandtesticularmeasurementsinyoungbuffalobullsincuba AT haroldfont relationshipbetweenbodyandtesticularmeasurementsinyoungbuffalobullsincuba AT suitbertocabrera relationshipbetweenbodyandtesticularmeasurementsinyoungbuffalobullsincuba AT yaritzaarias relationshipbetweenbodyandtesticularmeasurementsinyoungbuffalobullsincuba
_version_	1718409299933265920

Relationship between body and testicular measurements in young buffalo bulls in Cuba

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