Sex effects on macromineral requirements for growth in Saanen goats: A meta-analysis
Autor(a) principal: | |
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Data de Publicação: | 2017 |
Outros Autores: | , , , , |
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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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) |
repository.mail.fl_str_mv |
|
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1808129280935198720 |