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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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Average body temperature of cattle during the last 4 days of gestation. The temperature in the last 24 h before parturition differed from all other time points (*p < 0.05). In the graph, 0 represents the time of calving (the number of animals investigated at that time point are in brackets).
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Figure 2: Average body temperature of cattle during the last 4 days of gestation. The temperature in the last 24 h before parturition differed from all other time points (*p < 0.05). In the graph, 0 represents the time of calving (the number of animals investigated at that time point are in brackets).

Mentions: The mean average body temperature in prepartum cows and heifers declined by 0.3 ± 0.5℃ from 38.9 to 38.6℃ during the last 24 h before parturition. In 46.7% (n = 118) of the prepartum animals, a decline of >0.3℃ was observed (Fig. 2) over the last 24 h before parturition. Body temperatures during the last 24 h before parturition were significantly different to those measured at all other time points (p < 0.05).


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)

Average body temperature of cattle during the last 4 days of gestation. The temperature in the last 24 h before parturition differed from all other time points (*p < 0.05). In the graph, 0 represents the time of calving (the number of animals investigated at that time point are in brackets).
© Copyright Policy
Related In: Results  -  Collection

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

Figure 2: Average body temperature of cattle during the last 4 days of gestation. The temperature in the last 24 h before parturition differed from all other time points (*p < 0.05). In the graph, 0 represents the time of calving (the number of animals investigated at that time point are in brackets).
Mentions: The mean average body temperature in prepartum cows and heifers declined by 0.3 ± 0.5℃ from 38.9 to 38.6℃ during the last 24 h before parturition. In 46.7% (n = 118) of the prepartum animals, a decline of >0.3℃ was observed (Fig. 2) over the last 24 h before parturition. Body temperatures during the last 24 h before parturition were significantly different to those measured at all other time points (p < 0.05).

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