Randi A. Black PhD

Dairy Advisor

UC Cooperative Extension
133 Aviation Boulevard
Suite 109
Santa Rosa, CA 95403-2894
(707) 565-2648
rablack@ucanr.edu

http://cesonoma.ucanr.edu/

Also in:
Marin County
Mendocino County

Education

Ph.D. Animal Health and Well-being, University of Tennessee. 2016

M.S. Dairy Systems Management, University of Kentucky. 2013

B.S. Animal Science, University of Kentucky. 2009

Specialty

Areas of Expertise (click to see all ANR academics with this expertise)

• Dairy Cattle / Milk / Other Dairy Prod
• Animal Diseases
• Animal Welfare/Well-Being and Protection
• Environmental Stress in Animals
• Animal Management Systems
• Improved Animal Products (Before Harvest)
• Sustainable Food Systems

Bibliography

Peer Reviewed

• Cheong, Sejin; Di Francesco, Juliette, et al.; Lee, Kyuyoung; Van Vleck Pereira, Richard; Black, Randi; Karle, Betsy; Lema, Melissa; Pires, Alda F. A. (2022). Survey of Management Practices and Farmers’ Perceptions of Diseases on Organic Dairy Cattle Farms in California. Animals. 12, 2526. https://doi.org/10.3390/ani12192526
• Damasceno, F. A.; Taraba, J. L., et al.; Day, G. B.; Black, R. A.; Bewley, J. M.; K., Fernandes. T.; Oliveira, C. E. A.; Andrande, R. R.; Barbari, M.; Ferraz, P. F. P.; Leso, L. (2021). Development of predictive equations for thermal conductivity of compost barns. Applied Sciences. 11:18, 8503. https://doi.org/10.3390/app11188503
• Abdelfattah, E. M.; Ekong, P. S., et al.; Okello, E.; Chamchoy, T.; Karle, B. M.; Black, R. A.; Sheedy, D.; El Ashmawy, W. R.; Williams, D. R.; Califano, D.; Tovar, L. F. D.; Ongom, J.; Lehenbauer, T. W.; Byrne, B. A.; Aly, S. S. (2021). Epidemiology of antimicrobial resistance (AMR) on California dairies: descriptive and cluster analyses of AMR phenotype of fecal commensal bacteria isolated from adult cows. PeerJ. 9, e11108. https://doi.org/10.7717/peerj.11108
• Damasceno, F. A.; Taraba, J. L., et al.; Day, G. B.; Vega, F. A. O.; Rocha, K. S. O.; Black, R. A.; Bewley, J. M.; Oliveira, C. E. A.; Barbari, M. (2020). 3D CFD analysis of natural ventilation in reduced scale model of compost bedded pack barn for dairy cows. Applied Sciences. 10, 8112. https://doi.org/10.3390/app10228112
• Black, R. A.; Krawczel, P. D. (2019). Effect of prepartum exercise on lying behavior, labor length, and cortisol concentrations. Journal of Dairy Science. 102:12, 11250-11259. https://doi.org/10.3168/jds.2018-16029
• Black, R. A.; Whitlock, B. K., et al.; Krawczel, P. D. (2017). Effect of maternal prepartum exercise on calf dry matter intake, weight gain, behavior, and cortisol concentrations at disbudding and weaning. Journal of Dairy Science. 100:9, 7390-7400. https://doi.org/10.3168/jds.2016-12191
• Black, R. A.; van Amstel, S.R., et al.; Krawczel, P.D. (2017). Effect of prepartum exercise, pasture turnout, or total confinement on hoof health. Journal of Dairy Science. 100:10, 8338-8346. https://doi.org/10.3168/jds.2016-12082
• Ingle, H. D.; Rice, C.A., et al.; Black, R.A.; Childers, S.Z.; Prado, M.E.; Krawczel, P.D. (2017). Effect of switch-trimming on udder and teat hygiene of dairy cows. Applied Animal Welfare Science. 27, 1-5. https://doi.org/10.1080/10888705.2017.1393339
• Kull, J. A.; Ingle, H.D., et al.; Black, R.A.; Eberhart, N.L.; Krawczel, P.D. (2017). Effects of bedding with recycled sand on lying behaviors, udder hygiene, and preference of lactating Holstein dairy cows. Journal of Dairy Science. 100:9, 7379-7389. https://doi.org/10.3168/jds.2016-12307
• Everett, J. B.; Schumacher, J., et al.; Doherty, T.J.; Black, R.A.; Amelse, L.L.; Krawczel, P.D.; Coetzee, J.F.; Whitlock, B.K. (2017). Effects of performance packages and action devices applied to the fore digits of Tennessee Walking Horses on behavior and biochemical indicators of stress, pain, and inflammation. American Journal of Veterinary Research. 79:1, 21-32. https://doi.org/10.2460/ajvr.79.1.21
• Krawczel, P. D.; Ferneborg, S., et al.; Black, R.; Agenäs, S.; Svennersten-Sjaunja, K.; Ternman, E. (2017). Milking efficiency in AMS using quarter level milking can be improved by applying a high take-off level. Journal of Animal Science. 95:Suppl. 4, 247. https://doi.org/10.2527/asasann.2017.507
• Krawczel, P.; Ferneborg, S., et al.; Wiking, L.; Dalsgaard, T.K.; Gregersen, S.B.; Black, R.; Larsen, T.; Agenäs, S.; Svennersten-Sjauna, K.; Ternman, E. (2017). Milking time and risk of over-milking can be decreased with early teat cup removal based on udder quarter milk flow without loss in milk yield. Journal of Dairy Science. 100:8, 6640-6647. https://doi.org/10.3168/jds.2016-12312
• Black, R. A.; Krawczel, P.D. (2016). A case study of behaviour and performance of confined or pastured cows during the dry period. Animals. 6:7, 41. https://doi.org/10.3390/ani6070041
• Black, R. A.; Grant, R. J., et al.; Krawczel, P. D. (2016). Short communication: Short-term changes in stocking density did not alter meal characteristics of lactating Holstein dairy cattle. Journal of Dairy Science. 99:8, 6572-6577. https://doi.org/10.3168/jds.2015-9602
• Black, R. A.; Taraba, J. L., et al.; Day, G. B.; Damasceno, F. A.; Newman, M. C.; Akers, K. A.; Wood, C. L.; McQuerry, K. J.; Bewley, J. M. (2014). The relationship between compost bedded pack performance, management, and bacterial counts. Journal of Dairy Science. 97:5, 2669-2679. https://doi.org/10.3168/jds.2013-6779
• Black, R. A.; Taraba, J. L., et al.; Day, G. B.; Damasceno, F. A.; Bewley, J. M. (2013). Compost bedded pack barn management, performance, and producer satisfaction. Journal of Dairy Science. 96:12, 8060-8074. https://doi.org/10.3168/jds.2013-6778

Non-Peer Reviewed

• Black, Randi (2023). New Funding for Climate Smart Agricultural Practices. Sonoma-Marin Farm News. September.
• Black, Randi (2022). Understanding Nutrient Management on Dairies in the North Coast Region. Sonoma-Marin Farm News. May 2022.
• Black, R. A.; Karle, B. M. (2021). Properties of alternative bedding materials for compost bedded pack barns. Journal of Dairy Science. 104:Suppl. 1, 268. https://www.adsa.org/Portals/0/SiteContent/Docs/Meetings/PastMeetings/Annual/2021/75.pdf
• Abdelfattah, E.; Ekong, P., et al.; Okello, E.; Chamchoy, T.; Karle, B.; Black, R.; Sheedy, D.; El-Ashmawy, W.; Williams, D.; Califano, D.; Duran, L.; Ongom, J.; Byrne, B.; Lehenbauer, T.; Aly, S. (2020). Antimicrobial resistance in fecal commensal bacteria isolated from dairy cows in California. Journal of Dairy Science. 103:Suppl. 1, 27. https://www.adsa.org/Portals/0/SiteContent/Docs/Meetings/PastMeetings/Annual/2020/27.pdf
• Black, Randi (2020). Funding Available for Climate Smart Agriculture Practices. Sonoma-Marin Farm News. March.
• Black, Randi (2020). Poultry 101: for new Poultry Parents. UCCE Sonoma Poultry. https://cesonoma.ucanr.edu/Poultry/Poultry101/
• Black, Randi (2019). Compost Bedded Pack Barn Design and Management Considerations. UCCE California Dairy Newsletter (August), Progressive Dairy (October), California Dairy Magazine (November). https://ucanr.edu/sites/Dairy/newsletters/California_Dairy_Newsletter81380.pdf
• Black, Randi (2019). Disbudding and Dehorning Best Management Practices. UCCE California Dairy Newsletter. May. https://ucanr.edu/sites/Dairy/newsletters/California_Dairy_Newsletter80088.pdf
• Black, R. A. (2019). Research and education priorities of California’s North Bay dairies. Journal of Dairy Science. 102:Suppl. 1, 103. https://www.adsa.org/Portals/0/SiteContent/Docs/Meetings/PastMeetings/Annual/2019/102.pdf
• Black, Randi (2018). Beefing Up Farm Security. Sonoma-Marin Farm News. October.
• Black, Randi (2018). CDFA to fund Alternative Manure Management Practices in 2018. Sonoma-Marin Farm News. March.
• Black, R. A.; Krawczel, P. D. (2018). Effect of prepartum exercise on calving behavior and cortisol concentrations. Journal of Dairy Science. 101:Suppl. 2, 362. https://www.adsa.org/Portals/0/SiteContent/Docs/Meetings/PastMeetings/Annual/2018/361.pdf
• Black, Randi; Larson, Stephanie, et al.; Macaulay, Luke (2018). Pest and Politics: Managing Free-Ranging Tule Elk in Point Reyes National Seashore. 28th Proceedings of the Vertebrate Pest Conference. https://doi.org/10.5070/V42811023
• Black, Randi (2017). Linking On-Farm Dairy Management Practices to Storm-Flow. Sonoma-Marin Farm News. October.
• Kesterson, Clay; Black, Randi, et al.; Eberhart, Nicole; Edwards, Erika; Krawczel, Peter (2017). The effect of overstocking different resources within a freestall pen on the behaviour of lactating Holstein cows. Proc. 51st Congress of the International Society for Applied Ethology. 97. https://www.applied-ethology.org/res/Abstract%20book%20ISAE2017.pdf

ANR Workgroup Associations

• Dairy Health and Production - Member
• Native American Community Partnerships - Member

Return to California Dairy Team Contacts