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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/132115
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oai:ri.conicet.gov.ar:11336/132115 |
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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 |
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1844614468445667328 |
score |
13.070432 |