FR 16. Ultrasonographic evaluation of the cervical involution in tropical crossbred dairy cows
The ultrasonographic evaluation of the involution of the cervix (IC) was studied in 8 crossbred cows with 1 (n=4) and 2 (n=4) parturition. Reasearch was conducted at the university farm La Esperanza, located in a dry tropical forest area, mean temperature 28 ºC and anual rainfall 996 mm. The transducer was introduced into the rectum and rotated 90º related to the insertion plane at the level of the second posterior cervical ring. The dorsoventral and lateral-lateral diameters were measured. Cervical involution was considered completed when the diameters were not smaller and the measure was exactly the same in two consecutive observations. IC was estimated by linear and quadratic regression, analysis of variance and Pearson correlation accomplished by procedure GLM of SAS. IC ended at 32.5 days postpartum; no differences were observed between cows of 1 or 2 parturition (32.5 ± 3.4 and 32.5 ± 4.4 days, respectively). Correlation between the average mean diameter of the cervix and postpartum days, square and cubic days postpartum were - 0.79, - 0.76, - 0.72 (P<.001). The regression equation was: Y = 6.0884 - 0.2491x + 0.003x2. Ultrasonography was considered a valuable tool to study the cervical uterine involution in crossbred cows.
| Main Authors: | , , , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Asociacion Latinoamericana de Produccion Animal
2005
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| Online Access: | https://ojs.alpa.uy/index.php/ojs_files/article/view/281 |
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| Summary: | The ultrasonographic evaluation of the involution of the cervix (IC) was studied in 8 crossbred cows with 1 (n=4) and 2 (n=4) parturition. Reasearch was conducted at the university farm La Esperanza, located in a dry tropical forest area, mean temperature 28 ºC and anual rainfall 996 mm. The transducer was introduced into the rectum and rotated 90º related to the insertion plane at the level of the second posterior cervical ring. The dorsoventral and lateral-lateral diameters were measured. Cervical involution was considered completed when the diameters were not smaller and the measure was exactly the same in two consecutive observations. IC was estimated by linear and quadratic regression, analysis of variance and Pearson correlation accomplished by procedure GLM of SAS. IC ended at 32.5 days postpartum; no differences were observed between cows of 1 or 2 parturition (32.5 ± 3.4 and 32.5 ± 4.4 days, respectively). Correlation between the average mean diameter of the cervix and postpartum days, square and cubic days postpartum were - 0.79, - 0.76, - 0.72 (P<.001). The regression equation was: Y = 6.0884 - 0.2491x + 0.003x2. Ultrasonography was considered a valuable tool to study the cervical uterine involution in crossbred cows. |
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