Genetic comparison of milk production and composition in three maternal rabbit lines

[EN] The aim of this study was to compare 3 Spanish maternal rabbit lines (A, V and LP) in terms of milk production and composition. These lines were founded on different criteria but selected for litter size at weaning. A total of 194 mature does in their third or higher parity were used. The milk...

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Autores: El Nagar, Ayman Gamal Fawzy, Sánchez, Juan Pablo, Ragab, Mohamed Mohamed, Mínguez Balaguer, Carlos, Baselga Izquierdo, Manuel
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universitat Politècnica de València (UPV)
Repositorio:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
Idioma:inglés
OAI Identifier:oai:riunet.upv.es:10251/46448
Acceso en línea:https://riunet.upv.es/handle/10251/46448
Access Level:acceso abierto
Palabra clave:Rabbits
Milk production
Milk composition
Maternal lines
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spelling Genetic comparison of milk production and composition in three maternal rabbit linesEl Nagar, Ayman Gamal FawzySánchez, Juan PabloRagab, Mohamed MohamedMínguez Balaguer, CarlosBaselga Izquierdo, ManuelRabbitsMilk productionMilk compositionMaternal lines[EN] The aim of this study was to compare 3 Spanish maternal rabbit lines (A, V and LP) in terms of milk production and composition. These lines were founded on different criteria but selected for litter size at weaning. A total of 194 mature does in their third or higher parity were used. The milk yield of does was recorded at 1, 2, 3, 4, 8, 9, 10, 11, 15, 16 and 17 d post-partum (dpp). The milk production traits studied were weekly milk yield (WMY; g/wk) and milk conversion ratio (MCR; grams of litter gain per grams of milk suckled during the first 21  dpp). The milk composition traits studied were fat (%), protein  (%), ash (%), lactose (%) and total solids (%). The milk samples to be analysed were collected from each doe at 18 dpp. Data were analysed using single trait mixed and fixed models with and without covariates; the covariates were number born alive (NBA) and doe weight at kindling (DW). The overall mean of WMY, during the first 3 wk, was 1547±16 g/wk. Milk yields during the different lactation weeks were for line A 872±39, 1503±39 and 1865±39 g for first, second and third lactation weeks, respectively. In line V, the corresponding values were 919±35, 1633±35 and 2004±35  g, and in line LP, they were 1043±36, 1819±36 and 2254±36  g. Means of MCR were 0.41±0.01, 0.41±0.01 and 0.42±0.01 for A, V and LP lines, respectively. Overall means of fat, protein, ash, lactose and total solids (%) were 14.62±0.17, 11.10±0.07, 1.89±0.04, 2.67±0.12 and 30.27±0.24, respectively. The differences between lines for milk production traits were significant except for MCR, while the differences between lines for milk composition traits were not significant. NBA had significant effects on all milk yield traits but had no significant effects on milk composition traits. DW only had a significant effect on weekly milk yield. The parity order had no significant effect either for milk production traits or milk composition traits in multiparous does, except for ash %.This work was supported by the Spanish project AGL2011-30170-C02-01 from the Spanish National Research Plan. Ayman EL Nagar acknowledges a MAEC-AECID grant from The Spanish Agency for International Cooperation for Development (AECID). The authors are very grateful to Prof. Juan Jose Pascual professor of Animal Nutrition, Institute for Animal Science and Technology, Universitat Politecnica de Valencia for revising the manuscript and his fruitful comments.Editorial Universitat Politècnica de ValènciaMinisterio de Ciencia e InnovaciónRepositorio Institucional de la Universitat Politècnica de València Riunet20142014-12-22journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://riunet.upv.es/handle/10251/46448reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)InglésengMinisterio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 AGL2011-30170-C02-02 ESTUDIO DEL SISTEMA INMUNE DE DIFERENTES LINEAS GENETICAS CUNICOLAS Y SU RESPUESTA FRENTE A DESAFIOS PRODUCTIVOS E INFECCIOSOSopen accesshttp://purl.org/coar/access_right/c_abf2Reserva de todos los derechoshttp://rightsstatements.org/vocab/InC/1.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/464482026-06-13T07:49:27Z
dc.title.none.fl_str_mv Genetic comparison of milk production and composition in three maternal rabbit lines
title Genetic comparison of milk production and composition in three maternal rabbit lines
spellingShingle Genetic comparison of milk production and composition in three maternal rabbit lines
El Nagar, Ayman Gamal Fawzy
Rabbits
Milk production
Milk composition
Maternal lines
title_short Genetic comparison of milk production and composition in three maternal rabbit lines
title_full Genetic comparison of milk production and composition in three maternal rabbit lines
title_fullStr Genetic comparison of milk production and composition in three maternal rabbit lines
title_full_unstemmed Genetic comparison of milk production and composition in three maternal rabbit lines
title_sort Genetic comparison of milk production and composition in three maternal rabbit lines
dc.creator.none.fl_str_mv El Nagar, Ayman Gamal Fawzy
Sánchez, Juan Pablo
Ragab, Mohamed Mohamed
Mínguez Balaguer, Carlos
Baselga Izquierdo, Manuel
author El Nagar, Ayman Gamal Fawzy
author_facet El Nagar, Ayman Gamal Fawzy
Sánchez, Juan Pablo
Ragab, Mohamed Mohamed
Mínguez Balaguer, Carlos
Baselga Izquierdo, Manuel
author_role author
author2 Sánchez, Juan Pablo
Ragab, Mohamed Mohamed
Mínguez Balaguer, Carlos
Baselga Izquierdo, Manuel
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Ciencia e Innovación
Repositorio Institucional de la Universitat Politècnica de València Riunet
dc.subject.none.fl_str_mv Rabbits
Milk production
Milk composition
Maternal lines
topic Rabbits
Milk production
Milk composition
Maternal lines
description [EN] The aim of this study was to compare 3 Spanish maternal rabbit lines (A, V and LP) in terms of milk production and composition. These lines were founded on different criteria but selected for litter size at weaning. A total of 194 mature does in their third or higher parity were used. The milk yield of does was recorded at 1, 2, 3, 4, 8, 9, 10, 11, 15, 16 and 17 d post-partum (dpp). The milk production traits studied were weekly milk yield (WMY; g/wk) and milk conversion ratio (MCR; grams of litter gain per grams of milk suckled during the first 21  dpp). The milk composition traits studied were fat (%), protein  (%), ash (%), lactose (%) and total solids (%). The milk samples to be analysed were collected from each doe at 18 dpp. Data were analysed using single trait mixed and fixed models with and without covariates; the covariates were number born alive (NBA) and doe weight at kindling (DW). The overall mean of WMY, during the first 3 wk, was 1547±16 g/wk. Milk yields during the different lactation weeks were for line A 872±39, 1503±39 and 1865±39 g for first, second and third lactation weeks, respectively. In line V, the corresponding values were 919±35, 1633±35 and 2004±35  g, and in line LP, they were 1043±36, 1819±36 and 2254±36  g. Means of MCR were 0.41±0.01, 0.41±0.01 and 0.42±0.01 for A, V and LP lines, respectively. Overall means of fat, protein, ash, lactose and total solids (%) were 14.62±0.17, 11.10±0.07, 1.89±0.04, 2.67±0.12 and 30.27±0.24, respectively. The differences between lines for milk production traits were significant except for MCR, while the differences between lines for milk composition traits were not significant. NBA had significant effects on all milk yield traits but had no significant effects on milk composition traits. DW only had a significant effect on weekly milk yield. The parity order had no significant effect either for milk production traits or milk composition traits in multiparous does, except for ash %.
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-12-22
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://riunet.upv.es/handle/10251/46448
url https://riunet.upv.es/handle/10251/46448
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv Ministerio de Ciencia e Innovación http://dx.doi.org/10.13039/501100004837 AGL2011-30170-C02-02 ESTUDIO DEL SISTEMA INMUNE DE DIFERENTES LINEAS GENETICAS CUNICOLAS Y SU RESPUESTA FRENTE A DESAFIOS PRODUCTIVOS E INFECCIOSOS
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Reserva de todos los derechos
http://rightsstatements.org/vocab/InC/1.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Editorial Universitat Politècnica de València
publisher.none.fl_str_mv Editorial Universitat Politècnica de València
dc.source.none.fl_str_mv reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
instname:Universitat Politècnica de València (UPV)
instname_str Universitat Politècnica de València (UPV)
reponame_str RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
collection RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia
repository.name.fl_str_mv
repository.mail.fl_str_mv
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