Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis

Detalhes bibliográficos
Autor(a) principal: Vargas, J. A. C. [UNESP]
Data de Publicação: 2017
Outros Autores: Almeida, A. K. [UNESP], Souza, A. P. [UNESP], Fernandes, M. H. M. R. [UNESP], Resende, K. T. [UNESP], Teixeira, I. A. M. A. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.2527/jas2017.1825
http://hdl.handle.net/11449/165916
Resumo: The aim of this study was to investigate the effects of sex on the net requirements of growth for Ca (NCag), P (NPg), Na (NNag), K (NKg), and Mg (NMgg) in Saanen goats from 5 to 45 kg BW, with or without consideration of the degree of maturity. A database containing 209 individual records for Saanen goats (69 castrated males, 71 intact males, and 69 females) was generated from 6 comparative slaughter studies. Total amounts of Ca, P, Na, K, and Mg in the body were fitted to logarithmized allometric equations using empty BW (EBW) or degree of maturity (EBW/mature EBW) as regressors. The equations were fitted using a mixed model, where sex was considered a fixed effect and study was considered a random effect. Net requirements were estimated by the first derivative of the logarithmized allometric equations. Then, a Monte Carlo simulation was used to assess the uncertainty of calculated net requirement values. Without considering the degree of maturity, sex did not affect NCag, NPg, and NNag (P > 0.10). Conversely, considering the degree of maturity, NCag and NPg of intact males were 5% and 2%, respectively, greater than those of castrated males and females (P < 0.01), and NNag of males (castrated and intact) was 6% greater than that of females (P < 0.01). Regardless of approach used, NCag and NPg remained constant, whereas NNag decreased by 32% as BW ranged from 5 to 45 kg. Without considering the degree of maturity, NMgg of castrated and intact males were 8% and 18% greater than that of female goats (P = 0.054), respectively. Hereof NMgg of castrated and intact males increased by 8% and 15%, respectively, whereas that of females decreased by 8% as BW ranged from 5 to 45 kg. Considering the degree of maturity, NMgg of castrated and intact males were 7% and 17% greater than that of female goats (P = 0.054), respectively. In this regard, NMgg of castrated and intact males increased 8% and 16%, respectively, whereas that of females decreased by 7% from 5 to 45 kg BW. Both approaches showed that, regardless of sex (P > 0.10), NKg decreased by 26% (i.e., without considering the maturity degree) or 27% (i.e., considering the degree of maturity) from 5 to 45 kg BW. Therefore, the consideration of maturity stage highlights differences across sexes in the net macromineral requirements for growth in goats. Elucidation of sex effects on macromineral requirements for growth may be useful for improving the accuracy of recommendations for mineral requirements for dairy goats.
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spelling Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysisallometrycomparative slaughtermature weightmineral requirementuncertaintyThe aim of this study was to investigate the effects of sex on the net requirements of growth for Ca (NCag), P (NPg), Na (NNag), K (NKg), and Mg (NMgg) in Saanen goats from 5 to 45 kg BW, with or without consideration of the degree of maturity. A database containing 209 individual records for Saanen goats (69 castrated males, 71 intact males, and 69 females) was generated from 6 comparative slaughter studies. Total amounts of Ca, P, Na, K, and Mg in the body were fitted to logarithmized allometric equations using empty BW (EBW) or degree of maturity (EBW/mature EBW) as regressors. The equations were fitted using a mixed model, where sex was considered a fixed effect and study was considered a random effect. Net requirements were estimated by the first derivative of the logarithmized allometric equations. Then, a Monte Carlo simulation was used to assess the uncertainty of calculated net requirement values. Without considering the degree of maturity, sex did not affect NCag, NPg, and NNag (P > 0.10). Conversely, considering the degree of maturity, NCag and NPg of intact males were 5% and 2%, respectively, greater than those of castrated males and females (P < 0.01), and NNag of males (castrated and intact) was 6% greater than that of females (P < 0.01). Regardless of approach used, NCag and NPg remained constant, whereas NNag decreased by 32% as BW ranged from 5 to 45 kg. Without considering the degree of maturity, NMgg of castrated and intact males were 8% and 18% greater than that of female goats (P = 0.054), respectively. Hereof NMgg of castrated and intact males increased by 8% and 15%, respectively, whereas that of females decreased by 8% as BW ranged from 5 to 45 kg. Considering the degree of maturity, NMgg of castrated and intact males were 7% and 17% greater than that of female goats (P = 0.054), respectively. In this regard, NMgg of castrated and intact males increased 8% and 16%, respectively, whereas that of females decreased by 7% from 5 to 45 kg BW. Both approaches showed that, regardless of sex (P > 0.10), NKg decreased by 26% (i.e., without considering the maturity degree) or 27% (i.e., considering the degree of maturity) from 5 to 45 kg BW. Therefore, the consideration of maturity stage highlights differences across sexes in the net macromineral requirements for growth in goats. Elucidation of sex effects on macromineral requirements for growth may be useful for improving the accuracy of recommendations for mineral requirements for dairy goats.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Asociacion Universitaria Iberoamericana de Postgrado AUIPUniv Estadual Paulista, Dept Anim Sci, BR-14884900 Sao Paulo, BrazilUniv Estadual Paulista, Dept Anim Sci, BR-14884900 Sao Paulo, BrazilFAPESP: 2014/14734-9Asociacion Universitaria Iberoamericana de Postgrado AUIP: 166754-1Amer Soc Animal ScienceUniversidade Estadual Paulista (Unesp)Vargas, J. A. C. [UNESP]Almeida, A. K. [UNESP]Souza, A. P. [UNESP]Fernandes, M. H. M. R. [UNESP]Resende, K. T. [UNESP]Teixeira, I. A. M. A. [UNESP]2018-11-29T04:28:34Z2018-11-29T04:28:34Z2017-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article4646-4657http://dx.doi.org/10.2527/jas2017.1825Journal Of Animal Science. Champaign: Amer Soc Animal Science, v. 95, n. 10, p. 4646-4657, 2017.0021-8812http://hdl.handle.net/11449/16591610.2527/jas2017.1825WOS:000417113600041Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengJournal Of Animal Scienceinfo:eu-repo/semantics/openAccess2024-06-07T18:43:47Zoai:repositorio.unesp.br:11449/165916Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T21:04:21.466312Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
title Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
spellingShingle Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
Vargas, J. A. C. [UNESP]
allometry
comparative slaughter
mature weight
mineral requirement
uncertainty
title_short Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
title_full Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
title_fullStr Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
title_full_unstemmed Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
title_sort Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
author Vargas, J. A. C. [UNESP]
author_facet Vargas, J. A. C. [UNESP]
Almeida, A. K. [UNESP]
Souza, A. P. [UNESP]
Fernandes, M. H. M. R. [UNESP]
Resende, K. T. [UNESP]
Teixeira, I. A. M. A. [UNESP]
author_role author
author2 Almeida, A. K. [UNESP]
Souza, A. P. [UNESP]
Fernandes, M. H. M. R. [UNESP]
Resende, K. T. [UNESP]
Teixeira, I. A. M. A. [UNESP]
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Vargas, J. A. C. [UNESP]
Almeida, A. K. [UNESP]
Souza, A. P. [UNESP]
Fernandes, M. H. M. R. [UNESP]
Resende, K. T. [UNESP]
Teixeira, I. A. M. A. [UNESP]
dc.subject.por.fl_str_mv allometry
comparative slaughter
mature weight
mineral requirement
uncertainty
topic allometry
comparative slaughter
mature weight
mineral requirement
uncertainty
description The aim of this study was to investigate the effects of sex on the net requirements of growth for Ca (NCag), P (NPg), Na (NNag), K (NKg), and Mg (NMgg) in Saanen goats from 5 to 45 kg BW, with or without consideration of the degree of maturity. A database containing 209 individual records for Saanen goats (69 castrated males, 71 intact males, and 69 females) was generated from 6 comparative slaughter studies. Total amounts of Ca, P, Na, K, and Mg in the body were fitted to logarithmized allometric equations using empty BW (EBW) or degree of maturity (EBW/mature EBW) as regressors. The equations were fitted using a mixed model, where sex was considered a fixed effect and study was considered a random effect. Net requirements were estimated by the first derivative of the logarithmized allometric equations. Then, a Monte Carlo simulation was used to assess the uncertainty of calculated net requirement values. Without considering the degree of maturity, sex did not affect NCag, NPg, and NNag (P > 0.10). Conversely, considering the degree of maturity, NCag and NPg of intact males were 5% and 2%, respectively, greater than those of castrated males and females (P < 0.01), and NNag of males (castrated and intact) was 6% greater than that of females (P < 0.01). Regardless of approach used, NCag and NPg remained constant, whereas NNag decreased by 32% as BW ranged from 5 to 45 kg. Without considering the degree of maturity, NMgg of castrated and intact males were 8% and 18% greater than that of female goats (P = 0.054), respectively. Hereof NMgg of castrated and intact males increased by 8% and 15%, respectively, whereas that of females decreased by 8% as BW ranged from 5 to 45 kg. Considering the degree of maturity, NMgg of castrated and intact males were 7% and 17% greater than that of female goats (P = 0.054), respectively. In this regard, NMgg of castrated and intact males increased 8% and 16%, respectively, whereas that of females decreased by 7% from 5 to 45 kg BW. Both approaches showed that, regardless of sex (P > 0.10), NKg decreased by 26% (i.e., without considering the maturity degree) or 27% (i.e., considering the degree of maturity) from 5 to 45 kg BW. Therefore, the consideration of maturity stage highlights differences across sexes in the net macromineral requirements for growth in goats. Elucidation of sex effects on macromineral requirements for growth may be useful for improving the accuracy of recommendations for mineral requirements for dairy goats.
publishDate 2017
dc.date.none.fl_str_mv 2017-10-01
2018-11-29T04:28:34Z
2018-11-29T04:28:34Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.2527/jas2017.1825
Journal Of Animal Science. Champaign: Amer Soc Animal Science, v. 95, n. 10, p. 4646-4657, 2017.
0021-8812
http://hdl.handle.net/11449/165916
10.2527/jas2017.1825
WOS:000417113600041
url http://dx.doi.org/10.2527/jas2017.1825
http://hdl.handle.net/11449/165916
identifier_str_mv Journal Of Animal Science. Champaign: Amer Soc Animal Science, v. 95, n. 10, p. 4646-4657, 2017.
0021-8812
10.2527/jas2017.1825
WOS:000417113600041
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Journal Of Animal Science
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 4646-4657
dc.publisher.none.fl_str_mv Amer Soc Animal Science
publisher.none.fl_str_mv Amer Soc Animal Science
dc.source.none.fl_str_mv Web of Science
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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