Journal of Research in Applied and Basic Medical Sciences
Journal of Research in Applied and Basic Medical Sciences
Medical Sciences
http://ijrabms.umsu.ac.ir
1
admin
2717-0098
8
10.61186/rabms
14
8888
13
en
jalali
1397
2
1
gregorian
2018
5
1
4
1
online
1
fulltext
en
Relationships among urea, protein and macro-mineral concentrations in colostrums and whole milk in lactating mares
Relationships among urea, protein and macro-mineral concentrations in colostrums and whole milk in lactating mares
تخصصي
Special
پژوهشي
orginal article
The concentrations of urea, protein and macro-minerals and their interrelationships were investigated in lactating mares. Fifty-six samples including 17 colostrum and 39 whole milks were collected in 2011-2012 in Uremia, Iran. Milk parameters were evaluated by auto-analyzer using commercial kits, after separation of the milk casein in 0.1 normal HCl. The overall means for urea, protein, calcium (Ca), phosphorus (IP), magnesium (Mg), sodium (Na) and potassium (K) concentrations were 26.4 mg/dl, 4.66 g/dl, 43.2, 20.2, 7.33, 39.7, and 13.1 mmol/l, respectively. The concentrations of urea, Ca, IP and Na in whole milk were 24.4%, 2.8%, 14.3% and 9% greater than in colostrum and protein, and the Mg and K in colostrum’ were 505%, 91% and 9% greater than in whole milk of mares. Mean comparison between colostrum and whole milk parameters revealed significant differences (<em>P</em>< 0.01) in the concentrations of urea, protein and Mg. The highest concentrations of urea, Ca, IP and Na were found in whole milk and for protein, Mg and K in colostrum. With the exception of the differences (P<0.05) in colostrum Ca concentrations between 5, 9 and 10 year olds, no significant differences were observed among the six age groups in milk and colostrum parameters. There were significant correlations between urea/protein (r=-.19, P<0.01), urea/Ca (r=.37, P<0.01), urea/IP (r=-.35, P<0.01), urea/Mg (r=-0.32, P<0.01), Ca/IP (r=0.47, P<0.01), Na/K (r=-0.49, P<0.01) and protein/Mg (r=-0.72, P<0.01), of which the greatest and strongest correlations were seen in urea and protein/magnesium, respectively. It is concluded that the concentrations of protein and Mg in colostrum of mares were higher and urea was lower than in whole milk. Milk urea revealed the greatest relationships with the other milk parameters, and can be considered as a useful index in studies related to milk production in lactating mares.
Mares, milk, colostrum urea, protein, macro-minerals
15
22
http://ijrabms.umsu.ac.ir/browse.php?a_code=A-10-97-2&slc_lang=en&sid=1
Ramin
AG
ali_ramin75@yahoo.com
1003194753284600397
1003194753284600397
Yes
Clinical Sciences., Veterinary College, Urmia University, Urmia, Iran
Bayrami
M
ali_ramin75@yahoo.com
1003194753284600398
1003194753284600398
No
Medical Sciences of Tabriz University, Tabriz, Iran
Ramin
S
ali_ramin75@yahoo.com
1003194753284600399
1003194753284600399
No
Clinical Sciences., Veterinary College, Urmia University, Urmia, Iran
Kalantary
L
ali_ramin75@yahoo.com
1003194753284600400
1003194753284600400
No
Clinical Sciences, Veterinary College, Urmia University, Urmia, Iran