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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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Standard operating procedure of the PS-PRBT with a threshold of 4 PS-points. If the PS-PRBT is used with a threshold of 5 PS-points, the probability for "no calving" is 98.0%. If the PS-PRBT indicates an active CL, the probability of "no calving" is 93.3% and the probability for "calving within 12 h" is 65.8%.
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Figure 4: Standard operating procedure of the PS-PRBT with a threshold of 4 PS-points. If the PS-PRBT is used with a threshold of 5 PS-points, the probability for "no calving" is 98.0%. If the PS-PRBT indicates an active CL, the probability of "no calving" is 93.3% and the probability for "calving within 12 h" is 65.8%.

Mentions: We developed an SOP that combines the evaluation of clinical PS and PRBT data (Fig. 4). When both methods were combined, the following probabilities were calculated for cows: 93.3% for "no calving within 12 h" (high progesterone levels according to the PRBT) and 65.8% for "calving within 12 h" (low progesterone levels according to the PRBT) when the threshold was set at 5 points. With a threshold of 4 points, the probability of "no calving" was 96.8% and that for "calving" was 53.1% (Table 5).


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)

Standard operating procedure of the PS-PRBT with a threshold of 4 PS-points. If the PS-PRBT is used with a threshold of 5 PS-points, the probability for "no calving" is 98.0%. If the PS-PRBT indicates an active CL, the probability of "no calving" is 93.3% and the probability for "calving within 12 h" is 65.8%.
© Copyright Policy
Related In: Results  -  Collection

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

Figure 4: Standard operating procedure of the PS-PRBT with a threshold of 4 PS-points. If the PS-PRBT is used with a threshold of 5 PS-points, the probability for "no calving" is 98.0%. If the PS-PRBT indicates an active CL, the probability of "no calving" is 93.3% and the probability for "calving within 12 h" is 65.8%.
Mentions: We developed an SOP that combines the evaluation of clinical PS and PRBT data (Fig. 4). When both methods were combined, the following probabilities were calculated for cows: 93.3% for "no calving within 12 h" (high progesterone levels according to the PRBT) and 65.8% for "calving within 12 h" (low progesterone levels according to the PRBT) when the threshold was set at 5 points. With a threshold of 4 points, the probability of "no calving" was 96.8% and that for "calving" was 53.1% (Table 5).

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