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3 results on '"calving abnormality"'

1. Risk factors associated with reproductive performance in Japanese dairy cows: Vaginal discharge with flecks of pus or calving abnormality extend time to pregnancy.

Author

Hiroaki OKAWA, Akira GOTO, WIJAYAGUNAWARDANE, Missaka M. P., VOS, Peter L. A. M., Osamu YAMATO, Masayasu TANIGUCHI, and Mitsuhiro TAKAGI

Subjects
LACTATION, MILK yield, LIVESTOCK productivity, DAIRY cattle, PREGNANCY complications
Abstract

The present study aimed to determine possible risk factors affecting reproductive performance, especially time taken to establish pregnancy in dairy cows, using Cox's proportional hazard model. The data were collected from 154 Holstein Friesian cows (199 lactations). Cows diagnosed with a vaginal discharge score (VDS) of one or calving abnormality showed significantly delayed pregnancy: hazard ratio (HR)=0.654 (95% confidence interval [CI]: 0.436-0.983; P=0.041) and HR=0.457 (95% CI: 0.270-0.774; P=0.004), respectively. Our study suggested that the occurrence of VDS of one or calving abnormality might be possible risk factors increasing the number of days open and affecting reproductive performance in dairy cows. [ABSTRACT FROM AUTHOR]

Published
2019
Full Text
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2. Risk factors associated with reproductive performance in Japanese dairy cows: Vaginal discharge with flecks of pus or calving abnormality extend time to pregnancy

Author

Osamu Yamato, Missaka M P Wijayagunawardane, Peter L.A.M. Vos, Akira Goto, Masayasu Taniguchi, Mitsuhiro Takagi, and Hiroaki Okawa

Subjects
Vaginal discharge, medicine.medical_specialty, Time Factors, Cattle Diseases, Ice calving, days open, calving abnormality, Pregnancy, Risk Factors, Animals, Medicine, Risk factor, fertility, Suppuration, General Veterinary, business.industry, Obstetrics, Proportional hazards model, Reproduction, Hazard ratio, food and beverages, Note, medicine.disease, vaginal discharge score, Confidence interval, Vaginal Discharge, risk factor, Cattle, Female, Theriogenology, medicine.symptom, Abnormality, business
Abstract

The present study aimed to determine possible risk factors affecting reproductive performance, especially time taken to establish pregnancy in dairy cows, using Cox's proportional hazard model. The data were collected from 154 Holstein Friesian cows (199 lactations). Cows diagnosed with a vaginal discharge score (VDS) of one or calving abnormality showed significantly delayed pregnancy: hazard ratio (HR)=0.654 (95% confidence interval [CI]: 0.436-0.983; P=0.041) and HR=0.457 (95% CI: 0.270-0.774; P=0.004), respectively. Our study suggested that the occurrence of VDS of one or calving abnormality might be possible risk factors increasing the number of days open and affecting reproductive performance in dairy cows.

Published
2019

3. Risk factors associated with reproductive performance in Japanese dairy cows: Vaginal discharge with flecks of pus or calving abnormality extend time to pregnancy.

Author

Okawa H, Goto A, Wijayagunawardane MMP, Vos PLAM, Yamato O, Taniguchi M, and Takagi M

Subjects
Animals, Cattle, Female, Fertility, Pregnancy, Risk Factors, Time Factors, Vaginal Discharge pathology, Cattle Diseases pathology, Reproduction, Suppuration veterinary, Vaginal Discharge veterinary
Abstract

The present study aimed to determine possible risk factors affecting reproductive performance, especially time taken to establish pregnancy in dairy cows, using Cox's proportional hazard model. The data were collected from 154 Holstein Friesian cows (199 lactations). Cows diagnosed with a vaginal discharge score (VDS) of one or calving abnormality showed significantly delayed pregnancy: hazard ratio (HR)=0.654 (95% confidence interval [CI]: 0.436-0.983; P=0.041) and HR=0.457 (95% CI: 0.270-0.774; P=0.004), respectively. Our study suggested that the occurrence of VDS of one or calving abnormality might be possible risk factors increasing the number of days open and affecting reproductive performance in dairy cows.

Published
2019
Full Text
View/download PDF

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