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Effect of αs1-casein (CSN1S1) genotype on milk CSN1S1 content in Malagueña and Murciano-Granadina goats

Published online by Cambridge University Press:  07 November 2008

Francisco Caravaca ,
Marcel Amills ,
Jordi Jordana ,
Antonella Angiolillo ,
Pastora Agüera ,
Cristina Aranda ,
Alberto Menéndez-Buxadera ,
Alfonso Sánchez ,
Juan Carrizosa  and
Baltasar Urrutia
...Show all authors
Francisco Caravaca
Affiliation:
Departamento de Ciencias Agroforestales, E.U.I.T.A., Universidad de Sevilla, 41013 Sevilla, Spain
Marcel Amills*
Affiliation:
Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Jordi Jordana
Affiliation:
Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Antonella Angiolillo
Affiliation:
Dipartimento di Scienze e technologie per l'ambiente e il territorio, Università del Molise, Contrada Fonte Lappone, 86090 Pesche (IS), Italy
Pastora Agüera
Affiliation:
Departamento de Producción Animal, Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain
Cristina Aranda
Affiliation:
Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Alberto Menéndez-Buxadera
Affiliation:
Departamento de Producción Animal, Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain
Alfonso Sánchez
Affiliation:
Asociación Española de Criadores de la Cabra Malagueña, El Pozuelo s/n, Casabermeja 29160, Málaga, Spain
Juan Carrizosa
Affiliation:
Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA). Estación Sericícola. La Alberca, Murcia, Spain
Baltasar Urrutia
Affiliation:
Instituto Murciano de Investigación y Desarrollo Agrario y Alimentario (IMIDA). Estación Sericícola. La Alberca, Murcia, Spain
Armand Sànchez
Affiliation:
Departament de Ciència Animal i dels Aliments, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
Juan Manuel Serradilla
Affiliation:
Departamento de Producción Animal, Campus de Rabanales, Universidad de Córdoba, 14071 Córdoba, Spain
*
†For correspondence; e-mail: Marcel.Amills@uab.es
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Abstract

There is substantial evidence showing that the polymorphism of the goat αs1-casein (CSN1S1) gene has a major effect on milk protein, casein and fat content as well as on cheese yield. However, its influence on the synthesis rate of CSN1S1 has been less studied, with measurements only available in French breeds. In this article, we have measured milk CSN1S1 content in 89 Malagueña and 138 Murciano-Granadina goats with 305 and 460 phenotypic registers, respectively. In the Malagueña breed, average values of CSN1S1 content estimated for BB, BF, EE and FF genotypes were 6·94±0·38, 5·36±0·22, 4·58±0·13 and 3·98±0·27 g/l, respectively, being all significantly different (P<0·05). Conversely, in the Murciano-Granadina breed only the BB genotype (8·50±0·60 g/l) was significantly associated with increased levels of CSN1S1 (P<0·05), whereas BF (6·56±0·82 g/l), EE (6·39±0·60 g/l) and EF (6·91±0·76 g/l) genotypes displayed non-significant differences when compared with each other. Our results highlight the existence of breed-specific genetic and/or environmental factors modulating the impact of the CSN1S1 gene polymorphism on the synthesis rate of the corresponding protein.

Keywords

Goatαs1-caseinmilk compositionallelic expression
Type
Research Article
Information
Journal of Dairy Research , Volume 75 , Issue 4 , November 2008 , pp. 481 - 484
Copyright
Copyright © Proprietors of Journal of Dairy Research 2008

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