Predicting empty body weight in growing goats: A meta-analytic approach
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/10.1016/j.smallrumres.2017.09.002 http://hdl.handle.net/11449/179160 |
Resumo: | The objective of this study was to develop statistical models to predict empty body weight (EBW) by body weight (BW), testing the influence of sex (females, intact males or castrated males), type of diet (suckling or post-weaning), and genotype (Saanen, ½ Boer × ½ Saanen, ¾ Boer × ¼ Saanen, and Indigenous goats). Individual records of 311 goats combined from 10 studies, with BW ranging from 4.3 to 47.4 kg were used. The EBW was computed as the BW at slaughter minus the weight of the contents of the digestive tract, urinary bladder, and biliary vesicle. Linear regression analyses were performed to develop the models, considering sex, type of diet, and genotype as fixed effects and random effect of study. CONTRAST statements were used to conduct all pairwise comparisons of fixed effects and all the statistical analyses were performed using SAS. The present study revealed that sex did not affect both intercept (P = 0.53) and slope (P = 0.19). On the other hand, the EBW prediction was affected by type of diet (P < 0.01), and genotype (P = 0.02). Therefore, were proposed different equations to predict EBW from BW for suckling and post-weaning Saanen goats, where gastrointestinal tract content (g/kg EBW) in suckling goat kids increased as they grew, oppositely it remained slightly constant in post-weaning goats. The effect of genotype on the EBW:BW relationship was tested considering only post-weaning goats, and one equation was proposed for each genotype. In general, gastrointestinal tract content (g/kg EBW) decreased as goat kids grew in all genotypes but Indigenous goats. The results also highlighted different gastrointestinal relative capacity between genotypes. The development of these equations would enable producers and researchers to predict the animal EBW, and develop strategic plans in a goat herd. |
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Predicting empty body weight in growing goats: A meta-analytic approachBoerGenotypeSaanenSexType of dietThe objective of this study was to develop statistical models to predict empty body weight (EBW) by body weight (BW), testing the influence of sex (females, intact males or castrated males), type of diet (suckling or post-weaning), and genotype (Saanen, ½ Boer × ½ Saanen, ¾ Boer × ¼ Saanen, and Indigenous goats). Individual records of 311 goats combined from 10 studies, with BW ranging from 4.3 to 47.4 kg were used. The EBW was computed as the BW at slaughter minus the weight of the contents of the digestive tract, urinary bladder, and biliary vesicle. Linear regression analyses were performed to develop the models, considering sex, type of diet, and genotype as fixed effects and random effect of study. CONTRAST statements were used to conduct all pairwise comparisons of fixed effects and all the statistical analyses were performed using SAS. The present study revealed that sex did not affect both intercept (P = 0.53) and slope (P = 0.19). On the other hand, the EBW prediction was affected by type of diet (P < 0.01), and genotype (P = 0.02). Therefore, were proposed different equations to predict EBW from BW for suckling and post-weaning Saanen goats, where gastrointestinal tract content (g/kg EBW) in suckling goat kids increased as they grew, oppositely it remained slightly constant in post-weaning goats. The effect of genotype on the EBW:BW relationship was tested considering only post-weaning goats, and one equation was proposed for each genotype. In general, gastrointestinal tract content (g/kg EBW) decreased as goat kids grew in all genotypes but Indigenous goats. The results also highlighted different gastrointestinal relative capacity between genotypes. The development of these equations would enable producers and researchers to predict the animal EBW, and develop strategic plans in a goat herd.Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Universidade Estadual Paulista (UNESP) Department of Animal ScienceUniversidade Estadual Paulista (UNESP) Department of Animal ScienceFAPESP: 2014/14734-9FAPESP: 2015/14091-3Universidade Estadual Paulista (Unesp)Campos, Letícia Marra [UNESP]Almeida, Amélia Katiane [UNESP]Biagioli, Bruno [UNESP]Resende, Kleber Tomas [UNESP]Teixeira, Izabelle Auxiliadora Molina Almeida [UNESP]2018-12-11T17:34:00Z2018-12-11T17:34:00Z2017-10-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article45-50application/pdfhttp://dx.doi.org/10.1016/j.smallrumres.2017.09.002Small Ruminant Research, v. 155, p. 45-50.0921-4488http://hdl.handle.net/11449/17916010.1016/j.smallrumres.2017.09.0022-s2.0-850291684112-s2.0-85029168411.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSmall Ruminant Research0,485info:eu-repo/semantics/openAccess2024-06-07T18:41:18Zoai:repositorio.unesp.br:11449/179160Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T17:36:40.551314Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Predicting empty body weight in growing goats: A meta-analytic approach |
title |
Predicting empty body weight in growing goats: A meta-analytic approach |
spellingShingle |
Predicting empty body weight in growing goats: A meta-analytic approach Campos, Letícia Marra [UNESP] Boer Genotype Saanen Sex Type of diet |
title_short |
Predicting empty body weight in growing goats: A meta-analytic approach |
title_full |
Predicting empty body weight in growing goats: A meta-analytic approach |
title_fullStr |
Predicting empty body weight in growing goats: A meta-analytic approach |
title_full_unstemmed |
Predicting empty body weight in growing goats: A meta-analytic approach |
title_sort |
Predicting empty body weight in growing goats: A meta-analytic approach |
author |
Campos, Letícia Marra [UNESP] |
author_facet |
Campos, Letícia Marra [UNESP] Almeida, Amélia Katiane [UNESP] Biagioli, Bruno [UNESP] Resende, Kleber Tomas [UNESP] Teixeira, Izabelle Auxiliadora Molina Almeida [UNESP] |
author_role |
author |
author2 |
Almeida, Amélia Katiane [UNESP] Biagioli, Bruno [UNESP] Resende, Kleber Tomas [UNESP] Teixeira, Izabelle Auxiliadora Molina Almeida [UNESP] |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Campos, Letícia Marra [UNESP] Almeida, Amélia Katiane [UNESP] Biagioli, Bruno [UNESP] Resende, Kleber Tomas [UNESP] Teixeira, Izabelle Auxiliadora Molina Almeida [UNESP] |
dc.subject.por.fl_str_mv |
Boer Genotype Saanen Sex Type of diet |
topic |
Boer Genotype Saanen Sex Type of diet |
description |
The objective of this study was to develop statistical models to predict empty body weight (EBW) by body weight (BW), testing the influence of sex (females, intact males or castrated males), type of diet (suckling or post-weaning), and genotype (Saanen, ½ Boer × ½ Saanen, ¾ Boer × ¼ Saanen, and Indigenous goats). Individual records of 311 goats combined from 10 studies, with BW ranging from 4.3 to 47.4 kg were used. The EBW was computed as the BW at slaughter minus the weight of the contents of the digestive tract, urinary bladder, and biliary vesicle. Linear regression analyses were performed to develop the models, considering sex, type of diet, and genotype as fixed effects and random effect of study. CONTRAST statements were used to conduct all pairwise comparisons of fixed effects and all the statistical analyses were performed using SAS. The present study revealed that sex did not affect both intercept (P = 0.53) and slope (P = 0.19). On the other hand, the EBW prediction was affected by type of diet (P < 0.01), and genotype (P = 0.02). Therefore, were proposed different equations to predict EBW from BW for suckling and post-weaning Saanen goats, where gastrointestinal tract content (g/kg EBW) in suckling goat kids increased as they grew, oppositely it remained slightly constant in post-weaning goats. The effect of genotype on the EBW:BW relationship was tested considering only post-weaning goats, and one equation was proposed for each genotype. In general, gastrointestinal tract content (g/kg EBW) decreased as goat kids grew in all genotypes but Indigenous goats. The results also highlighted different gastrointestinal relative capacity between genotypes. The development of these equations would enable producers and researchers to predict the animal EBW, and develop strategic plans in a goat herd. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017-10-01 2018-12-11T17:34:00Z 2018-12-11T17:34:00Z |
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/10.1016/j.smallrumres.2017.09.002 Small Ruminant Research, v. 155, p. 45-50. 0921-4488 http://hdl.handle.net/11449/179160 10.1016/j.smallrumres.2017.09.002 2-s2.0-85029168411 2-s2.0-85029168411.pdf |
url |
http://dx.doi.org/10.1016/j.smallrumres.2017.09.002 http://hdl.handle.net/11449/179160 |
identifier_str_mv |
Small Ruminant Research, v. 155, p. 45-50. 0921-4488 10.1016/j.smallrumres.2017.09.002 2-s2.0-85029168411 2-s2.0-85029168411.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Small Ruminant Research 0,485 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
45-50 application/pdf |
dc.source.none.fl_str_mv |
Scopus 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 |
|
_version_ |
1808128834204073984 |