EFFECT OF FEEDING CALCIUM SOAPS TO EARLY POSTPARTUM DAIRY-COWS ON PLASMA PROSTAGLANDIN-F2-ALPHA LUTEINIZING-HORMONE, AND FOLLICULAR-GROWTH

被引:106
作者
LUCY, MC
STAPLES, CR
MICHEL, FM
THATCHER, WW
BOLT, DJ
机构
[1] UNIV FLORIDA, INST FOOD & AGR SCI, DEPT DAIRY SCI, GAINESVILLE, FL 32611 USA
[2] USDA ARS, BELTSVILLE AGR RES CTR, REPROD LAB, BELTSVILLE, MD 20705 USA
关键词
FOLLICLE; FATTY ACIDS; PROSTAGLANDIN F2-ALPHA;
D O I
10.3168/jds.S0022-0302(91)78195-2
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Multiparous Holstein cows (n = 18) were fed a total mixed ration containing corn silage, corn grain, whole cottonseed, soybean meal, dried distillers grains, and chopped bermudagrass hay (control) or same diet plus Ca salts of long-chain fatty acids (2.2% of diet DM) for the first 60 d postpartum. Predicted energy balance was calculated from DM intake, milk yield and composition, and BW. On d 25 postpartum, cows were injected with 25 mg of prostaglandin F2-alpha and treated for 15 d with an intravaginal device containing 1.9 g progesterone. Profiles of 15-keto-13,14-dihydro-prostaglandin F2-alpha (d 1 to 21) and plasma triglycerides (d 7 to 60) were similar between groups. Average number of follicles, determined by ultrasonography prior to d 25, tended to differ between groups; controls had more 3- to 5-mm and fewer 6- to 9-mm follicles than the group of fat-fed cows. Basal, smoothed mean concentration, and average luteinizing hormone amplitude, determined by 10-min samples for 8 h on d 10, were not significantly different between groups. Increasing predicted energy balance was associated with increased pulse amplitude and diameter of the largest follicle on d 10. During the progesterone treatment period and the postprogesterone treatment estrous cycle, cows fed fat had greater numbers of 3- to 5-mm and >15-mm follicles. In conclusion, feeding fat did not influence 15-keto-13,14-dihydro-prostaglandin F2-alpha or luteinizing hormone dynamics but did alter the average number of follicles within different size classes and the diameter of largest and second largest follicle after progesterone treatment.
引用
收藏
页码:483 / 489
页数:7
相关论文
共 34 条
[1]   PROSTAGLANDIN FORMATION IN MAN DURING INTAKE OF DIFFERENT AMOUNTS OF LINOLEIC-ACID IN FORMULA DIETS [J].
ADAM, O ;
WOLFRAM, G ;
ZOLLNER, N .
ANNALS OF NUTRITION AND METABOLISM, 1982, 26 (05) :315-323
[2]   PARTITIONING OF NUTRIENTS DURING PREGNANCY AND LACTATION - A REVIEW OF MECHANISMS INVOLVING HOMEOSTASIS AND HOMEORHESIS [J].
BAUMAN, DE ;
CURRIE, WB .
JOURNAL OF DAIRY SCIENCE, 1980, 63 (09) :1514-1529
[3]   INTERRELATIONSHIPS BETWEEN ENERGY-BALANCE AND POSTPARTUM REPRODUCTIVE FUNCTION IN DAIRY-CATTLE [J].
BUTLER, WR ;
SMITH, RD .
JOURNAL OF DAIRY SCIENCE, 1989, 72 (03) :767-783
[4]   RUMINAL FERMENTATION INVIVO AS INFLUENCED BY LONG-CHAIN FATTY-ACIDS [J].
CHALUPA, W ;
VECCHIARELLI, B ;
ELSER, AE ;
KRONFELD, DS ;
SKLAN, D ;
PALMQUIST, DL .
JOURNAL OF DAIRY SCIENCE, 1986, 69 (05) :1293-1301
[5]   RUMEN FERMENTATION INVITRO AS INFLUENCED BY LONG-CHAIN FATTY-ACIDS [J].
CHALUPA, W ;
RICKABAUGH, B ;
KRONFELD, DS ;
SKLAN, D .
JOURNAL OF DAIRY SCIENCE, 1984, 67 (07) :1439-1444
[6]   ENERGY NUTRITION AND METABOLISM OF THE LACTATING DAIRY-COW [J].
COPPOCK, CE .
JOURNAL OF DAIRY SCIENCE, 1985, 68 (12) :3403-3410
[7]  
DUPONT J, 1978, FED PROC, V37, P445
[8]  
FOSTER LB, 1973, CLIN CHEM, V19, P338
[10]   SOURCE OF F-SERIES PROSTAGLANDINS DURING THE EARLY POSTPARTUM PERIOD IN CATTLE [J].
GUILBAULT, LA ;
THATCHER, WW ;
DROST, M ;
HOPKINS, SM .
BIOLOGY OF REPRODUCTION, 1984, 31 (05) :879-887