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Effect of metritis on the pattern of behavioral, physiological, and performance parameters monitored by sensors in dairy cows.

M. M. Pérez

Events

06-22-2020

Abstract:

39
Effect of metritis on the pattern of behavioral, physiological, and performance parameters monitored by sensors in dairy cows.
M. M. Pérez*, E. M. Cabrera, C. Rial, I. Foddanu, J. O. Giordano. Department of Animal Science, Cornell University Ithaca, NY.

Our objective was to compare the pattern of multiple behavioral, physiological, and performance parameters collected by sensors in Holstein cows diagnosed or not with metritis (MET). Cows underwent clinical examination daily from calving until 28 DIM. Sensor parameters monitored and collected were: physical activity (ACT), rumination (RUM) and eating (EAT) behavior, reticulo-rumen temperature (TEMP), and milk production (MILK) and milk components (fat and protein). Groups of cows were formed as follows: cows diagnosed with MET only (METO; n = 149), cows diagnosed with MET plus another disorder (MET+; n = 78) within 7 d before or after diagnosis of MET, and cows with no evident signs of clinical disease (NCD; n = 824). Data from d −7 to 7 after diagnosis of MET were analyzed by ANOVA with repeated measurements including group, time, and their interaction as fixed effects and controlling by lactation number (1, 2, 3+). The mean DIM at diagnosis of MET was considered study d 0 for cows in the NCD group. Cow within-group was included as random effect and was the subject of repeated measures. MILK was lower (P < 0.01) for cows in METO and MET+ from d −4 to 7. Cows in METO and MET+ had greater (P < 0.01) fat and fat-to-protein ratio than cows in NCD from d −7 to 7. For cows in METO and for MET+, ACT was lower (P < 0.01) than for cows in NCD from d −3 to −1 and from 1 to 7, respectively. EAT was reduced (P < 0.01) for cows in both METO and MET+ compared with NCD from d −6 to 7. Cows in MET+ had lesser (P < 0.01) RUM than cows in NCD from d −4 to 7 whereas cows in METO had lesser (P < 0.01) RUM than cows in NCD from d −4 to 4. Cows in METO had greater (P < 0.01) TEMP than cows in NCD from d −7 to 7, whereas cows in MET+ had greater (P < 0.01) TEMP than cows in NCD from d −1 to 7. We conclude that cows with metritis only and cows with metritis and another disorder observed within 7 d before or after diagnosis of metritis had specific patterns of behavioral, physiological and productivity parameters which might be used to predict the occurrence of metritis.

Keywords: metritis, sensor, dairy cow.