TY - JOUR
T1 - Interrelationships between somatic cell counts, lactation stage and lactation number and their influence on plasmin activity and protein fraction distribution in dromedary (Camelus dromedaries) and cow milks
AU - Juan Godoy, Bibiana
AU - Trujillo Mesa, Antonio José
AU - Guamis Lopez, Buenaventura
AU - Hamed, Houda
AU - ElFeki, Abdelfettah
AU - Gargouri, Ahmed
PY - 2012/6/1
Y1 - 2012/6/1
N2 - In the present study, the relationship between milk somatic cell counts (SCC), nitrogen fractions, individual casein percentage distribution, plasmin-plasminogen activities and proteolysis, and the influence of lactation stage and lactation number in dromedary and cow milks were compared. Dromedary milk appeared to contain a lower amount of total and pH 4.6-soluble nitrogen than cow milk. The major protein components in milks were caseins, which accounted for ∼70% of total proteins for both species, β- and α s1-being the predominant caseins in both milk kinds. In dromedary milk, β-casein increased with lactation number but decreased as SCC increased. Total protein, α s2-casein and SCC decreased during lactation in dromedary milk. The dromedary is characterized by a relatively low content of κ-casein.Plasmin plus plasminogen activity is higher in cow milk compared to dromedary milk. The plasmin activity increased as SCC increased in cow milk but not in dromedary milk. © 2012.
AB - In the present study, the relationship between milk somatic cell counts (SCC), nitrogen fractions, individual casein percentage distribution, plasmin-plasminogen activities and proteolysis, and the influence of lactation stage and lactation number in dromedary and cow milks were compared. Dromedary milk appeared to contain a lower amount of total and pH 4.6-soluble nitrogen than cow milk. The major protein components in milks were caseins, which accounted for ∼70% of total proteins for both species, β- and α s1-being the predominant caseins in both milk kinds. In dromedary milk, β-casein increased with lactation number but decreased as SCC increased. Total protein, α s2-casein and SCC decreased during lactation in dromedary milk. The dromedary is characterized by a relatively low content of κ-casein.Plasmin plus plasminogen activity is higher in cow milk compared to dromedary milk. The plasmin activity increased as SCC increased in cow milk but not in dromedary milk. © 2012.
KW - Caseins
KW - Dromedary milk
KW - Plasmin activity
KW - Proteolysis
KW - Somatic cell counts
U2 - https://doi.org/10.1016/j.smallrumres.2012.01.002
DO - https://doi.org/10.1016/j.smallrumres.2012.01.002
M3 - Article
VL - 105
SP - 300
EP - 307
JO - Small Ruminant Research
JF - Small Ruminant Research
SN - 0921-4488
ER -