Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows

Autores
Jaurena, Gustavo; Moorby, J. M.; Fisher, W. J.; Cantet, Rodolfo Juan Carlos
Año de publicación
2005
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The lactation cycle of the dairy cow induces large changes in body fat and protein pools, which can be monitored through loin backfat (BF) and longissimus dorsi (LD) measurements. Data from two experiments (exp) using Holstein-Friesian dairy cows (no. = 40 and 32 respectively) were used to study the association of body weight (BW), BF and LD depth with body condition score (BCS) for the last 6 weeks of the dry period (DP) and the first 8 weeks of lactation. Loin and tail BCS were manually assessed (0 to 5 scale) and BF and LD depth were measured by ultrasound at the fifth lumbar process. The BCS data ranged from 1.3 to 3.0 units in the DP, and from about 1.1 to 3.1 units during early lactation in both experiments. Data were analysed by two models: BW, LD or BF = exp + period (DP or lactation) + BCS + interactions + cow + error (model 1); and BCS = exp + period + LD + BF + LD2 + BF2 + exp X LD + exp X BF + exp X LD2 + exp BF2 + period X LD + period X BF + period X LD2 + period X BF2 + cow + error (model 2). A first-order autoregressive (AR(1)) covariance structure was employed for the error terms to account for the correlation among repeated measures within cow. Regressions of BW and LD on BCS (model 1) found pre- to post-calving differences (P<0.001) in intercept for BW and LD, and slope coefficients of 35 (DP) and 21 (lactation) kg BW, and 5.8 mm LD per BCS unit. Regression of BF on BCS (model 1) showed an exp X period interaction (P<0.001), with 0.4 mm BF (exp 1; P<0.05) and 2.0 mm BF (exp 2; P<0.001) per BCS unit. Regression of BCS on LD and BF (model 2) showed intercepts not equal to 0 (P<0.06), and differences (P<0.001) between DP and lactation; BCS increased (P<0.001) by 0.027 units per mm BF and 0.05 units per mm LD, but LD had a quadratic term -0.0004 (P = 0.02). It is concluded that at BCS lower than 3, LD contributes to BCS following a quadratic function, whereas BF causes BCS to increase linearly. Each unit of BCS equated to about 35 and 20 kg BW for DP and lactation periods respectively, to 5.8 mm LD, and to between 0.4 and 2.0 mm BF. © 2005 British Society of Animal Science.
Fil: Jaurena, Gustavo. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina
Fil: Moorby, J. M.. Institute of Grassland and Environmental Research; Reino Unido
Fil: Fisher, W. J.. Institute of Grassland and Environmental Research; Reino Unido
Fil: Cantet, Rodolfo Juan Carlos. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
BODY COMPOSITION
BODY FAT
BODY PROTEIN
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/132115

id CONICETDig_01d09de39d5d6cd0f297acb7909cb0f6
oai_identifier_str oai:ri.conicet.gov.ar:11336/132115
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cowsJaurena, GustavoMoorby, J. M.Fisher, W. J.Cantet, Rodolfo Juan CarlosBODY COMPOSITIONBODY FATBODY PROTEINhttps://purl.org/becyt/ford/4.2https://purl.org/becyt/ford/4The lactation cycle of the dairy cow induces large changes in body fat and protein pools, which can be monitored through loin backfat (BF) and longissimus dorsi (LD) measurements. Data from two experiments (exp) using Holstein-Friesian dairy cows (no. = 40 and 32 respectively) were used to study the association of body weight (BW), BF and LD depth with body condition score (BCS) for the last 6 weeks of the dry period (DP) and the first 8 weeks of lactation. Loin and tail BCS were manually assessed (0 to 5 scale) and BF and LD depth were measured by ultrasound at the fifth lumbar process. The BCS data ranged from 1.3 to 3.0 units in the DP, and from about 1.1 to 3.1 units during early lactation in both experiments. Data were analysed by two models: BW, LD or BF = exp + period (DP or lactation) + BCS + interactions + cow + error (model 1); and BCS = exp + period + LD + BF + LD2 + BF2 + exp X LD + exp X BF + exp X LD2 + exp BF2 + period X LD + period X BF + period X LD2 + period X BF2 + cow + error (model 2). A first-order autoregressive (AR(1)) covariance structure was employed for the error terms to account for the correlation among repeated measures within cow. Regressions of BW and LD on BCS (model 1) found pre- to post-calving differences (P<0.001) in intercept for BW and LD, and slope coefficients of 35 (DP) and 21 (lactation) kg BW, and 5.8 mm LD per BCS unit. Regression of BF on BCS (model 1) showed an exp X period interaction (P<0.001), with 0.4 mm BF (exp 1; P<0.05) and 2.0 mm BF (exp 2; P<0.001) per BCS unit. Regression of BCS on LD and BF (model 2) showed intercepts not equal to 0 (P<0.06), and differences (P<0.001) between DP and lactation; BCS increased (P<0.001) by 0.027 units per mm BF and 0.05 units per mm LD, but LD had a quadratic term -0.0004 (P = 0.02). It is concluded that at BCS lower than 3, LD contributes to BCS following a quadratic function, whereas BF causes BCS to increase linearly. Each unit of BCS equated to about 35 and 20 kg BW for DP and lactation periods respectively, to 5.8 mm LD, and to between 0.4 and 2.0 mm BF. © 2005 British Society of Animal Science.Fil: Jaurena, Gustavo. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; ArgentinaFil: Moorby, J. M.. Institute of Grassland and Environmental Research; Reino UnidoFil: Fisher, W. J.. Institute of Grassland and Environmental Research; Reino UnidoFil: Cantet, Rodolfo Juan Carlos. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaBritish Society of Animal Science2005-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/132115Jaurena, Gustavo; Moorby, J. M.; Fisher, W. J.; Cantet, Rodolfo Juan Carlos; Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows; British Society of Animal Science; Animal Science; 80; 2; 4-2005; 219-2231357-7298CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/animal-science/article/abs/association-of-body-weight-loin-longissimus-dorsi-and-backfat-with-body-condition-score-in-dry-and-lactating-holstein-dairy-cows/EAE3FFB9254776AAA9FEB481B9AF8D43info:eu-repo/semantics/altIdentifier/doi/10.1079/ASC41750219info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:43:19Zoai:ri.conicet.gov.ar:11336/132115instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:43:19.665CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
title Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
spellingShingle Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
Jaurena, Gustavo
BODY COMPOSITION
BODY FAT
BODY PROTEIN
title_short Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
title_full Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
title_fullStr Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
title_full_unstemmed Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
title_sort Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows
dc.creator.none.fl_str_mv Jaurena, Gustavo
Moorby, J. M.
Fisher, W. J.
Cantet, Rodolfo Juan Carlos
author Jaurena, Gustavo
author_facet Jaurena, Gustavo
Moorby, J. M.
Fisher, W. J.
Cantet, Rodolfo Juan Carlos
author_role author
author2 Moorby, J. M.
Fisher, W. J.
Cantet, Rodolfo Juan Carlos
author2_role author
author
author
dc.subject.none.fl_str_mv BODY COMPOSITION
BODY FAT
BODY PROTEIN
topic BODY COMPOSITION
BODY FAT
BODY PROTEIN
purl_subject.fl_str_mv https://purl.org/becyt/ford/4.2
https://purl.org/becyt/ford/4
dc.description.none.fl_txt_mv The lactation cycle of the dairy cow induces large changes in body fat and protein pools, which can be monitored through loin backfat (BF) and longissimus dorsi (LD) measurements. Data from two experiments (exp) using Holstein-Friesian dairy cows (no. = 40 and 32 respectively) were used to study the association of body weight (BW), BF and LD depth with body condition score (BCS) for the last 6 weeks of the dry period (DP) and the first 8 weeks of lactation. Loin and tail BCS were manually assessed (0 to 5 scale) and BF and LD depth were measured by ultrasound at the fifth lumbar process. The BCS data ranged from 1.3 to 3.0 units in the DP, and from about 1.1 to 3.1 units during early lactation in both experiments. Data were analysed by two models: BW, LD or BF = exp + period (DP or lactation) + BCS + interactions + cow + error (model 1); and BCS = exp + period + LD + BF + LD2 + BF2 + exp X LD + exp X BF + exp X LD2 + exp BF2 + period X LD + period X BF + period X LD2 + period X BF2 + cow + error (model 2). A first-order autoregressive (AR(1)) covariance structure was employed for the error terms to account for the correlation among repeated measures within cow. Regressions of BW and LD on BCS (model 1) found pre- to post-calving differences (P<0.001) in intercept for BW and LD, and slope coefficients of 35 (DP) and 21 (lactation) kg BW, and 5.8 mm LD per BCS unit. Regression of BF on BCS (model 1) showed an exp X period interaction (P<0.001), with 0.4 mm BF (exp 1; P<0.05) and 2.0 mm BF (exp 2; P<0.001) per BCS unit. Regression of BCS on LD and BF (model 2) showed intercepts not equal to 0 (P<0.06), and differences (P<0.001) between DP and lactation; BCS increased (P<0.001) by 0.027 units per mm BF and 0.05 units per mm LD, but LD had a quadratic term -0.0004 (P = 0.02). It is concluded that at BCS lower than 3, LD contributes to BCS following a quadratic function, whereas BF causes BCS to increase linearly. Each unit of BCS equated to about 35 and 20 kg BW for DP and lactation periods respectively, to 5.8 mm LD, and to between 0.4 and 2.0 mm BF. © 2005 British Society of Animal Science.
Fil: Jaurena, Gustavo. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina
Fil: Moorby, J. M.. Institute of Grassland and Environmental Research; Reino Unido
Fil: Fisher, W. J.. Institute of Grassland and Environmental Research; Reino Unido
Fil: Cantet, Rodolfo Juan Carlos. Institute of Grassland and Environmental Research; Reino Unido. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Animal; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The lactation cycle of the dairy cow induces large changes in body fat and protein pools, which can be monitored through loin backfat (BF) and longissimus dorsi (LD) measurements. Data from two experiments (exp) using Holstein-Friesian dairy cows (no. = 40 and 32 respectively) were used to study the association of body weight (BW), BF and LD depth with body condition score (BCS) for the last 6 weeks of the dry period (DP) and the first 8 weeks of lactation. Loin and tail BCS were manually assessed (0 to 5 scale) and BF and LD depth were measured by ultrasound at the fifth lumbar process. The BCS data ranged from 1.3 to 3.0 units in the DP, and from about 1.1 to 3.1 units during early lactation in both experiments. Data were analysed by two models: BW, LD or BF = exp + period (DP or lactation) + BCS + interactions + cow + error (model 1); and BCS = exp + period + LD + BF + LD2 + BF2 + exp X LD + exp X BF + exp X LD2 + exp BF2 + period X LD + period X BF + period X LD2 + period X BF2 + cow + error (model 2). A first-order autoregressive (AR(1)) covariance structure was employed for the error terms to account for the correlation among repeated measures within cow. Regressions of BW and LD on BCS (model 1) found pre- to post-calving differences (P<0.001) in intercept for BW and LD, and slope coefficients of 35 (DP) and 21 (lactation) kg BW, and 5.8 mm LD per BCS unit. Regression of BF on BCS (model 1) showed an exp X period interaction (P<0.001), with 0.4 mm BF (exp 1; P<0.05) and 2.0 mm BF (exp 2; P<0.001) per BCS unit. Regression of BCS on LD and BF (model 2) showed intercepts not equal to 0 (P<0.06), and differences (P<0.001) between DP and lactation; BCS increased (P<0.001) by 0.027 units per mm BF and 0.05 units per mm LD, but LD had a quadratic term -0.0004 (P = 0.02). It is concluded that at BCS lower than 3, LD contributes to BCS following a quadratic function, whereas BF causes BCS to increase linearly. Each unit of BCS equated to about 35 and 20 kg BW for DP and lactation periods respectively, to 5.8 mm LD, and to between 0.4 and 2.0 mm BF. © 2005 British Society of Animal Science.
publishDate 2005
dc.date.none.fl_str_mv 2005-04
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/132115
Jaurena, Gustavo; Moorby, J. M.; Fisher, W. J.; Cantet, Rodolfo Juan Carlos; Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows; British Society of Animal Science; Animal Science; 80; 2; 4-2005; 219-223
1357-7298
CONICET Digital
CONICET
url http://hdl.handle.net/11336/132115
identifier_str_mv Jaurena, Gustavo; Moorby, J. M.; Fisher, W. J.; Cantet, Rodolfo Juan Carlos; Association of body weight, loin longissimus dorsi and backfat with body condition score in dry and lactating Holstein dairy cows; British Society of Animal Science; Animal Science; 80; 2; 4-2005; 219-223
1357-7298
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.cambridge.org/core/journals/animal-science/article/abs/association-of-body-weight-loin-longissimus-dorsi-and-backfat-with-body-condition-score-in-dry-and-lactating-holstein-dairy-cows/EAE3FFB9254776AAA9FEB481B9AF8D43
info:eu-repo/semantics/altIdentifier/doi/10.1079/ASC41750219
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv British Society of Animal Science
publisher.none.fl_str_mv British Society of Animal Science
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614468445667328
score 13.070432