TY - JOUR
T1 - Effects of αBs1-casein (CSN1S1) and κ-casein (CSN3) genotypes on milk coagulation properties in Murciano-Granadina goats
AU - Caravaca, Francisco
AU - Ares, José Luis
AU - Carrizosa, Juan
AU - Urrutia, Baltasar
AU - Baena, Francisca
AU - Jordana, Jordi
AU - Badaoui, Bouabid
AU - Sànchez, Armand
AU - Angiolillo, Antonella
AU - Amills, Marcel
AU - Serradilla, Juan Manuel
PY - 2011/2/1
Y1 - 2011/2/1
N2 - The effects of the caprine αs1-casein (CSN1S1) polymorphisms on milk quality and cheese yield have been widely studied in French and Italian goat breeds. Much less is known about the consequences of κ-casein (CSN3) genotype on the technological and coagulation properties of goat milk. In the current study, we have performed an association analysis between polymorphisms at the goat CSN1S1 and CSN3 genes and milk coagulation (rennet coagulation time, curdling rate and curd firmness) and technological (time to cutting of curd and cheese yield) properties. In this analysis, we have included 193 records from 74 Murciano-Granadina goats (with genotypes constituted by different combinations of alleles B, E and F of the gene CSN1S1 and alleles A and B of the gene CSN3) distributed in three herds, which were collected bimonthly during a whole lactation. Data analysis, using a linear mixed model for repeated observations, revealed significant associations between CSN1S1 genotypes and the rate of the curdling process. In this way, milk from EE goats had a significantly higher curdling rate than milk from BB individuals (P<0·05). Contrary to previous experiments performed in French breeds, cheese yield was not significantly different in BB, EE and EF goats. Moreover, we have shown that CSN3 genotype has a significant effect on the rennet coagulation time (BB>AB, P<0·05) but not on cheese yield. No interaction between the CSN1S1 and CSN3 genotypes was observed. © 2010 Proprietors of Journal of Dairy Research.
AB - The effects of the caprine αs1-casein (CSN1S1) polymorphisms on milk quality and cheese yield have been widely studied in French and Italian goat breeds. Much less is known about the consequences of κ-casein (CSN3) genotype on the technological and coagulation properties of goat milk. In the current study, we have performed an association analysis between polymorphisms at the goat CSN1S1 and CSN3 genes and milk coagulation (rennet coagulation time, curdling rate and curd firmness) and technological (time to cutting of curd and cheese yield) properties. In this analysis, we have included 193 records from 74 Murciano-Granadina goats (with genotypes constituted by different combinations of alleles B, E and F of the gene CSN1S1 and alleles A and B of the gene CSN3) distributed in three herds, which were collected bimonthly during a whole lactation. Data analysis, using a linear mixed model for repeated observations, revealed significant associations between CSN1S1 genotypes and the rate of the curdling process. In this way, milk from EE goats had a significantly higher curdling rate than milk from BB individuals (P<0·05). Contrary to previous experiments performed in French breeds, cheese yield was not significantly different in BB, EE and EF goats. Moreover, we have shown that CSN3 genotype has a significant effect on the rennet coagulation time (BB>AB, P<0·05) but not on cheese yield. No interaction between the CSN1S1 and CSN3 genotypes was observed. © 2010 Proprietors of Journal of Dairy Research.
KW - Goat
KW - milk coagulation parameters
KW - α -casein s1
KW - κ-casein
UR - http://www.scopus.com/inward/record.url?eid=2-s2.0-79952806422&partnerID=MN8TOARS
U2 - 10.1017/S002202991000083X
DO - 10.1017/S002202991000083X
M3 - Article
SN - 0022-0299
VL - 78
SP - 32
EP - 37
JO - Journal of Dairy Research
JF - Journal of Dairy Research
IS - 1
ER -