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Establishment of a standard operating procedure for predicting the time of calving in cattle.

Streyl D, Sauter-Louis C, Braunert A, Lange D, Weber F, Zerbe H - J. Vet. Sci. (2011)

Bottom Line: The relaxation of the broad pelvic ligaments combined with teat filling gave the best values for predicting either calving or no calving within 12 h.By combining the PS and PRBT (if PS ≥ 4), the prediction of calving within the next 12 h improved from 14.9% to 53.1%, and the probability of ruling out calving was 96.8%.The PRBT was compared to the results of an enzyme immunoassay (sensitivity, 90.2%; specificity, 74.9%).

View Article: PubMed Central - PubMed

Affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Faculty of Veterinary Medicine, Ludwig-Maximilian University of Munich, Sonnenstr. 16, 85764 Oberschleissheim, Germany. d.streyl@lmu.de

ABSTRACT
Precise calving monitoring is essential for minimizing the effects of dystocia in cows and calves. We conducted two studies in healthy cows that compared seven clinical signs (broad pelvic ligaments relaxation, vaginal secretion, udder hyperplasia, udder edema, teat filling, tail relaxation, and vulva edema) alone and in combination in order to predict the time of parturition. The relaxation of the broad pelvic ligaments combined with teat filling gave the best values for predicting either calving or no calving within 12 h. For the proposed parturition score (PS), a threshold of 4 PS points was identified below which calving within the next 12 h could be ruled out with a probability of 99.3% in cows (95.5% in heifers). Above this threshold, intermitted calving monitoring every 3 h and a progesterone rapid blood test (PRBT) would be recommended. By combining the PS and PRBT (if PS ≥ 4), the prediction of calving within the next 12 h improved from 14.9% to 53.1%, and the probability of ruling out calving was 96.8%. The PRBT was compared to the results of an enzyme immunoassay (sensitivity, 90.2%; specificity, 74.9%). The standard operating procedure developed in this study that combines the PS and PRBT will enable veterinarians to rule out or predict calving within a 12 h period in cows with high accuracy under field conditions.

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Related in: MedlinePlus

Receiver operating characteristic (ROC) analysis of parturition score (PS)-points for examining the relationship between the combination of broad pelvic ligament relaxation and filling of the teats and the ability to predict calving within 12 h. All animals in this study (―) had an area under the curve (AUC) of 0.835. The cows (---) had an AUC of 0.852 and the heifers (....) had an AUC of 0.745. Straight diagonal line is reference line.
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Figure 1: Receiver operating characteristic (ROC) analysis of parturition score (PS)-points for examining the relationship between the combination of broad pelvic ligament relaxation and filling of the teats and the ability to predict calving within 12 h. All animals in this study (―) had an area under the curve (AUC) of 0.835. The cows (---) had an AUC of 0.852 and the heifers (....) had an AUC of 0.745. Straight diagonal line is reference line.

Mentions: The subsequent analyses focused on the sum of the scores for relaxation of the caudal edge of the broad pelvic ligaments (PS-points: 0, 2, 4, and 6) and filling of the teats (PS-points: 0, 1, 2, and 3). Analyses of the AUCs for cows versus heifers showed significant differences. Fig. 1 shows the ROC curve of all 124 animals as well as those for the groups of cows and heifers. The AUC of all animals was 0.835, the AUC of the cows 0.852, and that of the heifers 0.745.


Establishment of a standard operating procedure for predicting the time of calving in cattle.

Streyl D, Sauter-Louis C, Braunert A, Lange D, Weber F, Zerbe H - J. Vet. Sci. (2011)

Receiver operating characteristic (ROC) analysis of parturition score (PS)-points for examining the relationship between the combination of broad pelvic ligament relaxation and filling of the teats and the ability to predict calving within 12 h. All animals in this study (―) had an area under the curve (AUC) of 0.835. The cows (---) had an AUC of 0.852 and the heifers (....) had an AUC of 0.745. Straight diagonal line is reference line.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3104173&req=5

Figure 1: Receiver operating characteristic (ROC) analysis of parturition score (PS)-points for examining the relationship between the combination of broad pelvic ligament relaxation and filling of the teats and the ability to predict calving within 12 h. All animals in this study (―) had an area under the curve (AUC) of 0.835. The cows (---) had an AUC of 0.852 and the heifers (....) had an AUC of 0.745. Straight diagonal line is reference line.
Mentions: The subsequent analyses focused on the sum of the scores for relaxation of the caudal edge of the broad pelvic ligaments (PS-points: 0, 2, 4, and 6) and filling of the teats (PS-points: 0, 1, 2, and 3). Analyses of the AUCs for cows versus heifers showed significant differences. Fig. 1 shows the ROC curve of all 124 animals as well as those for the groups of cows and heifers. The AUC of all animals was 0.835, the AUC of the cows 0.852, and that of the heifers 0.745.

Bottom Line: The relaxation of the broad pelvic ligaments combined with teat filling gave the best values for predicting either calving or no calving within 12 h.By combining the PS and PRBT (if PS ≥ 4), the prediction of calving within the next 12 h improved from 14.9% to 53.1%, and the probability of ruling out calving was 96.8%.The PRBT was compared to the results of an enzyme immunoassay (sensitivity, 90.2%; specificity, 74.9%).

View Article: PubMed Central - PubMed

Affiliation: Clinic for Ruminants with Ambulatory and Herd Health Services, Faculty of Veterinary Medicine, Ludwig-Maximilian University of Munich, Sonnenstr. 16, 85764 Oberschleissheim, Germany. d.streyl@lmu.de

ABSTRACT
Precise calving monitoring is essential for minimizing the effects of dystocia in cows and calves. We conducted two studies in healthy cows that compared seven clinical signs (broad pelvic ligaments relaxation, vaginal secretion, udder hyperplasia, udder edema, teat filling, tail relaxation, and vulva edema) alone and in combination in order to predict the time of parturition. The relaxation of the broad pelvic ligaments combined with teat filling gave the best values for predicting either calving or no calving within 12 h. For the proposed parturition score (PS), a threshold of 4 PS points was identified below which calving within the next 12 h could be ruled out with a probability of 99.3% in cows (95.5% in heifers). Above this threshold, intermitted calving monitoring every 3 h and a progesterone rapid blood test (PRBT) would be recommended. By combining the PS and PRBT (if PS ≥ 4), the prediction of calving within the next 12 h improved from 14.9% to 53.1%, and the probability of ruling out calving was 96.8%. The PRBT was compared to the results of an enzyme immunoassay (sensitivity, 90.2%; specificity, 74.9%). The standard operating procedure developed in this study that combines the PS and PRBT will enable veterinarians to rule out or predict calving within a 12 h period in cows with high accuracy under field conditions.

Show MeSH
Related in: MedlinePlus