|کد مقاله||کد نشریه||سال انتشار||مقاله انگلیسی||ترجمه فارسی||نسخه تمام متن|
|5522933||1401357||2017||4 صفحه PDF||ندارد||دانلود کنید|
â¢The iVETÂ® birth monitoring system is proposed for detecting every calving and for reducing fetal death incidence in cattle.â¢Pregnant heifers were monitored visually or by iVETÂ® over a 1-y interval in order to validate this system.â¢Further efforts have to be made until the iVETÂ® system can be recommended especially for heifers.
The objective was to validate the iVETÂ® birth monitoring system and to determine if it reduced fetal death in primiparous dairy heifers over a 1-y interval. There were 359 pregnant heifers enrolled; 167 heifers in the iVETÂ® group were monitored electronically and the remaining 192 (controls) were monitored visually for onset of Stage 2 labor, according to routine farm management. In addition, as a reference, all heifers were observed throughout the study by two independent investigators. Calves born dead or that died within 24Â h after birth were defined as stillborn. The interval from appearance of the chorioallantoic sac to recognition of onset of calving in the control group averaged 21Â min longer than the iVETÂ® signal (pÂ =Â 0.0001) and rate of fetal death was numerically lower in the iVETÂ® group (8.9%) than in the control group (10.4%, pÂ =Â 0.65). Interestingly, dystocia occurred more often in the iVETÂ® group (58.3%) than in the control group (40.9%, pÂ =Â 0.001). The iVETÂ® system detected onset of Stage 2 labor earlier than conventional monitoring by farm staff. However, the device was lacking in several aspects and should be improved before its use in primiparous heifers can be recommended.
Journal: Theriogenology - Volume 102, 15 October 2017, Pages 44-47