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Effects of frequent machine milking and suckling in early lactation on blood plasma ion homoeostasis in high-yielding dairy cows
Year:
1997
Source of publication :
Journal of Agricultural Science
Authors :
Bar-Pelled, Ud
;
.
Brukental, Israel
;
.
Folman, Yeshayahu
;
.
Gacitua, Haim
;
.
Lehrer, A. R.
;
.
Maltz, Ephraim
;
.
Silanikove, Nissim
;
.
Volume :
129
Co-Authors:
Bar-Peled, U., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Maltz, E., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tagari, H., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Lehrer, A.-R., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Robinzon, B., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Voet, H., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Folman, Y., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Bruckental, I., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Gacitua, H., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Silanikove, N., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
237
To page:
242
(
Total pages:
6
)
Abstract:
Groups of nine or ten cows were assigned, after calving, to treatments in which they were (i) machine milked three times daily (M3), (ii) machine milked six times daily (M6) or (iii) suckled three times daily in addition to being machine milked three times daily (s). Treatments were administered during the first 6 weeks postpartum. On one day, at weeks 1 and 6 postpartum, blood samples were collected from all cows at 30-min intervals between 06.00 and 13.00 h and these were analysed for plasma osmolality and plasma concentrations of Na+, K+ and Cl-. Milk yield was significantly higher in suckled cows than in cows milked six times daily, but significantly lower in cows milked three times daily. In cows milked six times daily, and to a greater extent in suckled cows, there was a reduction in plasma osmolality and monovalent ion concentrations (Na+, K+ and Cl-), which could increase the susceptibility of the cows to water intoxication. Moreover, suckling or milking the cows six times daily was associated with increased fluctuations in plasma osmolality and plasma Cl- concentrations. The decrease in plasma osmolality and ion concentration and the increased variation in plasma osmolality and Cl- were probably related to increased water intake and may be indicative of a severe challenge to homoeostasis regulation.
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DOI :
10.1017/S0021859697004681
Article number:
0
Affiliations:
Database:
Scopus
Publication Type:
article
;
.
Language:
English
Editors' remarks:
ID:
29544
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:47
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Scientific Publication
Effects of frequent machine milking and suckling in early lactation on blood plasma ion homoeostasis in high-yielding dairy cows
129
Bar-Peled, U., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel, Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Maltz, E., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Tagari, H., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Lehrer, A.-R., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Robinzon, B., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Voet, H., Hebrew University of Jerusalem, Faculty of Agriculture, Rehovot, Israel
Folman, Y., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Bruckental, I., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Gacitua, H., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Silanikove, N., Agricultural Research Organization, Volcani Center, PO Box 6, Bet Dagan 50250, Israel
Effects of frequent machine milking and suckling in early lactation on blood plasma ion homoeostasis in high-yielding dairy cows
Groups of nine or ten cows were assigned, after calving, to treatments in which they were (i) machine milked three times daily (M3), (ii) machine milked six times daily (M6) or (iii) suckled three times daily in addition to being machine milked three times daily (s). Treatments were administered during the first 6 weeks postpartum. On one day, at weeks 1 and 6 postpartum, blood samples were collected from all cows at 30-min intervals between 06.00 and 13.00 h and these were analysed for plasma osmolality and plasma concentrations of Na+, K+ and Cl-. Milk yield was significantly higher in suckled cows than in cows milked six times daily, but significantly lower in cows milked three times daily. In cows milked six times daily, and to a greater extent in suckled cows, there was a reduction in plasma osmolality and monovalent ion concentrations (Na+, K+ and Cl-), which could increase the susceptibility of the cows to water intoxication. Moreover, suckling or milking the cows six times daily was associated with increased fluctuations in plasma osmolality and plasma Cl- concentrations. The decrease in plasma osmolality and ion concentration and the increased variation in plasma osmolality and Cl- were probably related to increased water intake and may be indicative of a severe challenge to homoeostasis regulation.
Scientific Publication
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