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 -
Effect of Calcium Soaps of Fatty Acids and Administration of Somatotropin in Early Lactation on Productive and Reproductive Performance of High Producing Dairy Cows
Year:
1997
Source of publication :
Journal of Dairy Science
Authors :
מועלם, עוזי
;
.
פולמן, ישעיהו
;
.
קאים, משה
;
.
Volume :
80
Co-Authors:
Moallem, U., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Kaim, M., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Folman, Y., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Sklan, D., Faculty of Agriculture, Hebrew University, Rehovot, Israel
Facilitators :
From page:
2127
To page:
2136
(
Total pages:
10
)
Abstract:
This study examined the mechanisms by which calcium soaps of fatty acids and bovine somatotropin (bST) affect production and reproduction of high producing cows. Calcium soaps of fatty acids were fed at 2.2% dry matter, and 500 mg of Zn-sometribove (Monsanto Inc., St Louis, MO) were injected sub- cutaneously every 14 d from 10 to 150 d in milk (DIM). Production of fat-corrected milk was increased by 3.5 kg/d when calcium soaps of fatty acids were fed, by 6.1 kg/d when bST was administered, and by 7.4 kg/d when calcium soaps of fatty acids were fed and bST was administered. Body weight was similar for cows on all treatments until 85 DIM after which cows that were treated with bST had lower body weights. Body condition scores decreased more for cows treated with bST and began increasing later and more slowly. Treatment with bST resulted in more cows that experienced first ovulation after 30 DIM, and more cows on the control treatment exhibited first estrus before 35 DIM. Days open were greater when bST was administered. After the first artificial insemination, conception rates were similar for cows on the control treatment and for cows fed calcium soaps of fatty acids; conception rates after the first artificial insemination were low for all cows treated with bST. Pregnancy rates at 120 and 150 DIM were decreased by bST. Number of DIM to first ovulation, number of DIM to first estrus, and days open were negatively correlated with glucose and cholesterol concentrations in plasma. Production of fat-corrected milk was correlated with days open and with concentrations of triglycerides in plasma, nonesterified fatty acids, and cholesterol. Increased production had different effects on reproduction when induced by calcium soaps of fatty acids or bST treatment. Some of the adverse effects of bST treatments were alleviated by calcium soaps of fatty acids.
Note:
Related Files :
Animal
Animals
Blood
cattle
cows
drug effect
fatty acids
Female
lactation
pregnancy
Reproduction
עוד תגיות
תוכן קשור
More details
DOI :
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
20152
Last updated date:
02/03/2022 17:27
Creation date:
16/04/2018 23:34
You may also be interested in
Scientific Publication
Effect of Calcium Soaps of Fatty Acids and Administration of Somatotropin in Early Lactation on Productive and Reproductive Performance of High Producing Dairy Cows
80
Moallem, U., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Kaim, M., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Folman, Y., Agricultural Research Organization, PO Box 6, Bet Dagan, Israel
Sklan, D., Faculty of Agriculture, Hebrew University, Rehovot, Israel
Effect of Calcium Soaps of Fatty Acids and Administration of Somatotropin in Early Lactation on Productive and Reproductive Performance of High Producing Dairy Cows
This study examined the mechanisms by which calcium soaps of fatty acids and bovine somatotropin (bST) affect production and reproduction of high producing cows. Calcium soaps of fatty acids were fed at 2.2% dry matter, and 500 mg of Zn-sometribove (Monsanto Inc., St Louis, MO) were injected sub- cutaneously every 14 d from 10 to 150 d in milk (DIM). Production of fat-corrected milk was increased by 3.5 kg/d when calcium soaps of fatty acids were fed, by 6.1 kg/d when bST was administered, and by 7.4 kg/d when calcium soaps of fatty acids were fed and bST was administered. Body weight was similar for cows on all treatments until 85 DIM after which cows that were treated with bST had lower body weights. Body condition scores decreased more for cows treated with bST and began increasing later and more slowly. Treatment with bST resulted in more cows that experienced first ovulation after 30 DIM, and more cows on the control treatment exhibited first estrus before 35 DIM. Days open were greater when bST was administered. After the first artificial insemination, conception rates were similar for cows on the control treatment and for cows fed calcium soaps of fatty acids; conception rates after the first artificial insemination were low for all cows treated with bST. Pregnancy rates at 120 and 150 DIM were decreased by bST. Number of DIM to first ovulation, number of DIM to first estrus, and days open were negatively correlated with glucose and cholesterol concentrations in plasma. Production of fat-corrected milk was correlated with days open and with concentrations of triglycerides in plasma, nonesterified fatty acids, and cholesterol. Increased production had different effects on reproduction when induced by calcium soaps of fatty acids or bST treatment. Some of the adverse effects of bST treatments were alleviated by calcium soaps of fatty acids.
Scientific Publication
You may also be interested in