נגישות
menu      
חיפוש מתקדם
תחביר
חפש...
הספר "אוצר וולקני"
אודות
תנאי שימוש
ניהול
קהילה:
אסיף מאגר המחקר החקלאי
פותח על ידי קלירמאש פתרונות בע"מ -
Effects of premilking stimulation on complete lactation milk yield and milking performance.
Year:
1987
Source of publication :
Journal of Dairy Science
Authors :
שגיא, רם
;
.
Volume :
70
Co-Authors:
Merrill, W.G., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Sagi, R., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Petersson, L.G., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Bui, T.V., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Erb, H.N., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Galton, D.M., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Gates, R., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Facilitators :
From page:
1676
To page:
1684
(
Total pages:
9
)
Abstract:
Effects of premilking preparation on complete lactation performance were measured with two groups of multiparous Holstein cows; 1) 17 cows received full stimulation, a 60-s routine, and 2) 16 cows received minimum stimulation, a 15-s routine, before machine attachment. Actual unadjusted average lactation milk yield for cows receiving full stimulation was 5.4% less than that for cows receiving minimum stimulation. When postpeak persistencies were compared by linear regression of either 1) daily milk weights or 2) 3.5% FCM from DHI records of milk yield and milk fat percent and fitted to lactation curves using an incomplete gamma function, cows receiving full stimulation produced 1) 2.8 or 2) 2.5% more milk per lactation than did cows receiving minimal stimulation. However, none of the treatment differences in mean milk yield was significant statistically. Milk flow rates, strip yields, and machine on-times were measured at 8-wk intervals throughout lactation. Cows receiving full stimulation had significantly higher average milk flow rates and shorter machine on-times starting at wk 32. There were no significant differences in strip yields or percent residual milk between cows receiving full and minimum stimulation.
Note:
Related Files :
Animal
article
cattle
Female
lactation
Mammae
pregnancy
Support, Non-U.S. Gov't
udder
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
29729
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:49
Scientific Publication
Effects of premilking stimulation on complete lactation milk yield and milking performance.
70
Merrill, W.G., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Sagi, R., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Petersson, L.G., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Bui, T.V., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Erb, H.N., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Galton, D.M., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Gates, R., Department of Animal Science, Cornell University, Ithaca, NY 14853-0281.
Effects of premilking stimulation on complete lactation milk yield and milking performance.
Effects of premilking preparation on complete lactation performance were measured with two groups of multiparous Holstein cows; 1) 17 cows received full stimulation, a 60-s routine, and 2) 16 cows received minimum stimulation, a 15-s routine, before machine attachment. Actual unadjusted average lactation milk yield for cows receiving full stimulation was 5.4% less than that for cows receiving minimum stimulation. When postpeak persistencies were compared by linear regression of either 1) daily milk weights or 2) 3.5% FCM from DHI records of milk yield and milk fat percent and fitted to lactation curves using an incomplete gamma function, cows receiving full stimulation produced 1) 2.8 or 2) 2.5% more milk per lactation than did cows receiving minimal stimulation. However, none of the treatment differences in mean milk yield was significant statistically. Milk flow rates, strip yields, and machine on-times were measured at 8-wk intervals throughout lactation. Cows receiving full stimulation had significantly higher average milk flow rates and shorter machine on-times starting at wk 32. There were no significant differences in strip yields or percent residual milk between cows receiving full and minimum stimulation.
Scientific Publication
You may also be interested in