Portfolio

2025

• Determining the effects of tylosin, and live or autolyzed Saccharomyces cerevisiae as supplements in high-grain finishing feedlot diets containing monensin on cattle performance, feeding behaviour, digestibility, and carcass characteristics. 2025. Williams, M. S., AlZahal, O., Steele, M. A., Penner, G. B. and Wood, K.M. Canadian Journal of Animal Science. Submitted March 2025.
• Preference for and acceptability of a fat-microencapsulated anionic salt by dry dairy cows. 2025. Bruner, S. J., Wood, K.M., AlZahal, O. and DeVries, T. J. Journal of Dairy Science. Submitted July 2025.

2023

• Assessment of the effects of supplemental rumen protected B vitamins and choline for periparturient cows: A meta-analysis of 28 feeding studies. 2023. Evans, Essi, Fontaine, Emilie, AlZahal, Ousama and Gwyn, Chris Open Journal of Animal Sciences. 13:151-165. [doi]

2021

• Effect of mixed live yeast and lactic acid bacteria on in vitro fermentation with varying media pH using a high-grain or high-forage diet. 2021. Jiao, P. X., Ma, F. C., Beauchemin, K. A., AlZahal, O., Xie, X.L., Yang, W.Z. and Miglior, Filippo Canadian Journal of Animal Science. 101:370-380. [doi]
• Effect of non-encapsulated and encapsulated active dried yeast on blood cell count, blood metabolites, and immune response of finishing beef heifers. 2021. Jiao, Peixin, Beauchemin, Karen A., Ma, Fengchun, AlZahal, Ousama, Xie, Xiaolai, Yang, Wenzhu and Miglior, Filippo Canadian Journal of Animal Science. 101:390-394. [doi]
• Assessment of Lactational Performance in Dairy Cows Receiving a Rumen Protected B Vitamin Blend during Lactation: Part 2: A Regression Analysis of 50 Studies. 2021. Evans, Essi, Leclerc, Helene, Fontaine, Emilie, AlZahal, Ousama and Santin, Elizabeth Open Journal of Animal Sciences. 11:623-634. [doi]
• The impacts of a fibrolytic enzyme additive on digestibility and performance in the grower and early finisher period, and supplemental Saccharomyces cerevisiae on performance and rumen health in the late finisher period for feedlot cattle. 2021. Williams, Melissa S., AlZahal, Ousama, Mandell, Ira B., McBride, Brian W., Wood, Katharine M. and Miglior, Filippo Canadian Journal of Animal Science. 101:527-547. [doi]
• Evaluating the effects of fibrolytic enzymes on rumen fermentation, omasal nutrient flow, and production performance in dairy cows during early lactation. 2021. Refat, Basim, Christensen, David A., Ismael, Aya, Feng, Xin, Rodríguez-Espinosa, María E., Guevara-Oquendo, Victor H., Yang, Jenchieh, AlZahal, Ousama, Yu, Peiqiang and Miglior, Filippo Canadian Journal of Animal Science. e-First:1-11. [doi]
• Assessment of Lactational Performance in Dairy Cows Receiving a Rumen Protected B Vitamin Blend during Lactation: Part 1: A Meta-Analysis of 50 Studies. 2021. Evans, Essi, Leclerc, Helene, AlZahal, Ousama and Santin, Elizabeth Open Journal of Animal Sciences. 11:580-590. [doi]

2020

• Fecal bacterial community of finishing beef steers fed ruminally protected and non-protected active dried yeast. 2020. Ran, T., Jiao, P., AlZahal, O., Xie, X., Beauchemin, K. A., Niu, D. and Yang, W. Journal of Animal Science. 98:1-10. [doi]
• The effect of supplementing pony diets with yeast on 2. The faecal microbiome. 2020. Garber, A., Hastie, P. M., Farci, V., McGuinness, D., Bulmer, L., AlZahal, O. and Murray, J. M. D. Animal. Pages:1-10. [doi]
• The effect of supplementing pony diets with yeast on 1. In vivo and in vitro digestibility, faecal pH and particle size. 2020. Garber, A., Hastie, P. M., Farci, V., Bulmer, L., AlZahal, O. and Murray, J. M. D. Animal. Pages:1-12. [doi]

2019

• Screening of live yeast and yeast derivatives for their impact of strain and dose on in vitro ruminal fermentation and microbial profiles with varying media pH levels in high-forage beef cattle diet. 2019. Jiao, P., Wei, C., Sun, Y., Xie, X., Zhang, Y., Wang, S., Hu, G., AlZahal, O. and Yang, W. Journal of the Science of Food and Agriculture. 99:6751-6760. [doi]

2018

• Using ruminally protected and nonprotected active dried yeast as alternatives to antibiotics in finishing beef steers: growth performance, carcass traits, blood metabolites, and fecal Escherichia coli. 2018. Ran, T., Shen, Y. Z., Saleem, A. M., AlZahal, O., Beauchemin, K. A. and Yang, W. Z. Journal of Animal Science. 96:4385-4397. [doi]

2017

• An Investigation into Rumen Fungal and Protozoal Diversity in Three Rumen Fractions, during High-Fiber or Grain-Induced Sub-Acute Ruminal Acidosis Conditions, with or without Active Dry Yeast Supplementation. 2017. Ishaq, S. L., AlZahal, O., Walker, N. and McBride, B. Frontiers in Microbiology. 8:1943. [doi]
• Factors influencing ruminal bacterial community diversity and composition and microbial fibrolytic enzyme abundance in lactating dairy cows with a focus on the role of active dry yeast. 2017. AlZahal, O., Li, F., Guan, L. L., Walker, N. D. and McBride, B. W. Journal of Dairy Science. 100:4377-4393. [doi]

2016

• Effects of supplementation of active dried yeast and malate during sub-acute ruminal acidosis on rumen fermentation, microbial population, selected blood metabolites, and milk production in dairy cows. 2016. Malekkhahi, M., Tahmasbi, A. M., Naserian, A. A., Danesh-Mesgaran, M., Kleen, J. L., AlZahal, O. and Ghaffari, M. H. Animal Feed Science and Technology. 213:29-43. [doi]
• Analysis of the distal gut bacterial community by 454-pyrosequencing in captive giraffes (Giraffa camelopardalis). 2016. AlZahal, O., Valdes, E. V. and McBride, B. W. Zoo Biology. 35:42-50. [doi]

2015

• Feeding butter with elevated content of trans-10, cis-12 conjugated linoleic acid to obese-prone rats impairs glucose and insulin tolerance. 2015. Hamilton, M., Hopkins, L. E., AlZahal, O., MacDonald, T. L., Cervone, D. T., Wright, D. C., McBride, B. W. and Dyck, D. J. Lipids Health Dis. 14:119. [doi]
• On the analysis of Canadian Holstein dairy cow lactation curves using standard growth functions. 2015. Lopez, S., France, J., Odongo, N. E., McBride, R. A., Kebreab, E., AlZahal, O., McBride, B. W. and Dijkstra, J. Journal of Dairy Science. 98:2701-2712. [doi]
• Fishmeal supplementation during ovine pregnancy and lactation protects against maternal stress-induced programming of the offspring immune system. 2015. Fisher-Heffernan, R. E., Or'Rashid, M. M., AlZahal, O., Quinton, M., Boermans, H. J., McBride, B. W., Regnault, T. R. and Karrow, N. A. BMC Vet Res. 11:266. [doi]
• The periparturient period is associated with structural and transcriptomic adaptations of rumen papillae in dairy cattle. 2015. Steele, M. A., Schiestel, C., AlZahal, O., Dionissopoulos, L., Laarman, A. H., Matthews, J. C. and McBride, B. W. Journal of Dairy Science. 98:2583-2595. [doi]
• Do Cows Under Subacute Ruminal Acidosis (SARA) Attempt to Self-Medicate? 2015. Hendriksen, E, AlZahal, O, Wright, T C, McGinnis, A and McBride, B W American Journal of Animal and Veterinary Sciences. 10:197-201. [doi]
• Changes in the rumen papillae during the periparturient transition in Holstein dairy cows are accompanied by changes in abundance of proteins involved in intracellular pH regulation, but not SCFA transport. 2015. Laarman, A. H., Kleinberg, A., Steele, M. A., AlZahal, O. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 10:14-22. [doi]

2014

• Use of a direct-fed microbial product as a supplement during the transition period in dairy cattle. 2014. AlZahal, O., McGill, H., Kleinberg, A., Holliday, J. I., Hindrichsen, I. K., Duffield, T. F. and McBride, B. W. Journal of Dairy Science. 97:7102-7114. [doi]
• Transcriptomic changes in ruminal tissue induced by the peri-parturient transition in dairy cows. 2014. Dionissopoulos, L., AlZahal, O., Steele, M., Matthews, J. C. and Mcbride, B. W. American Journal of Animal and Veterinary Sciences. Pages:36-45. [doi]
• Effect of frequency of feed delivery on the feeding behaviour, growth, and rumen temperature of limit-fed dairy heifers. 2014. Greter, A. M., AlZahal, O., Duffield, T. F., McBride, B. W., Widowski, T. M. and DeVries, T. J. Canadian Journal of Animal Science. 94:11-20. [doi]
• Maternal supplementation with fishmeal protects against late gestation endotoxin-induced fetal programming of the ovine hypothalamic-pituitary-adrenal axis. 2014. Fisher, R. E., Or’Rashid, M., Quinton, M., AlZahal, O., Boermans, H. J., McBride, B. W. and Karrow, N. A. Journal of Developmental Origins of Health and Disease. 5:206-213. [doi]
• Active dry Saccharomyces cerevisiae can alleviate the effect of subacute ruminal acidosis in lactating dairy cows. 2014. AlZahal, O., Dionissopoulos, L., Laarman, A. H., Walker, N. and McBride, B. W. Journal of Dairy Science. 97:7751-7763. [doi]
• Feeding butter with elevated content of trans-10, cis-12 conjugated linoleic acid to lean rats does not impair glucose tolerance or muscle insulin response. 2014. Stefanson, A., Hopkins, L. E., AlZahal, O., Ritchie, I. R., MacDonald, T., Wright, D. C., McBride, B. W. and Dyck, D. J. Lipids in Health and Disease. 13:101. [doi]

2013

• Technical note: Use of laser capture microdissection for the localization of tissue-specific global gene expression in rumen papillae. 2013. Steele, M. A., AlZahal, O., Greenwood, S. L., Matthews, J. C. and McBride, B. W. Journal of Dairy Science. 96:7748-7752. [doi]
• Butyrate and subacute ruminal acidosis affects abundance of membrane proteins involved with proton and short chain fatty acid transporter in the rumen epithelium of dairy cows. 2013. Laarman, A. H., Dionissopoulos, L., AlZahal, O., Greenwood, S. L., Steele, M. A. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 8:220-229. [doi]
• Butyrate-mediated genomic changes involved in non-specific hose defenses, matrix remodeling and the immune response in the rumen epithelium of cows affiliated with subacute ruminal acidosis. 2013. Dionissopoulos, L, Laarman, A., AlZahal, O., Greenwood, S., Steele, M. A., Plaizier, J. C., Matthews, J. C. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 8:8-27. [doi]
• Butyrate supplementation affects mRNA abundace of genes involved in glycolsis, lipogenesis and oxidative phosopyrylation in the rumen epithelium of holstein dairy cows. 2013. Laarman, A. H., Dionissopoulos, L., AlZahal, O., Greenwood, S. L., Steele, M. A. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 8:239-245. [doi]

2012

• Rumen epithelial adaptation to ruminal acidosis in lactating cattle involves the coordinated expression of insulin-like growth factor-binding proteins and a cholesterolgenic enzyme. 2012. Steele, M. A., Dionissopoulos, L., AlZahal, O., Doelman, J. and McBride, B. W. Journal of Dairy Science. 95:318-27. [doi]
• Short communication: Grain-induced subacute ruminal acidosis is associated with the differential expression of insulin-like growth factor-binding proteins in rumen papillae of lactating dairy cattle. 2012. Steele, M. A., AlZahal, O., Walpole, M. E. and McBride, B. W. Journal of Dairy Science. 95:6072-6076. [doi]
• A characterization of inflammatory and structural markers within the rumen epithelium during grain-induced ruminal acidosis in lactating dairy cattle. 2012. Dionissopoulos, L., Steele, M. A., AlZahal, O., Plaizier, J. C. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 7:141-148. [doi]
• Plasma Fatty Acid Profile of Gestating Ewes Supplemented with Fishmeal. 2012. Or-Rashid, Mamun M., Fisher, Rebecca, Karrow, Niel, AlZahal, Ousama and McBride, Brian W. American Journal of Animal and Veterinary Sciences. 7:67-74. [doi]
• Adaptation to high grain giets proceeds through minimal immune system stimulation and differences in extracellular matrix protein expression in a model of subacute ruminal acidosis in non-lactating dairy cows. 2012. Dionissopoulos, L., Steele, M. A., AlZahal, O. and McBride, B. W. American Journal of Animal and Veterinary Sciences. 7:84-91. [doi]

2011

• Rumen epithelial adaptation to high-grain diets involves the coordinated regulation of genes involved in cholesterol homeostasis. 2011. Steele, M. A., Vandervoort, G., AlZahal, O., Hook, S. E., Matthews, J. C. and McBride, B. W. Physiological Genomics. 43:308-316. [doi]
• Comparative studies on the metabolism of linoleic acid by rumen bacteria, protozoa, and their mixture in vitro. 2011. Or-Rashid, M. M., AlZahal, O. and McBride, B. W. Appl Microbiol Biotechnol. 89:387-95. [doi]
• Bovine rumen epithelium undergoes rapid structural adaptations during grain-induced subacute ruminal acidosis. 2011. Steele, M. A., Croom, J., Kahler, M., AlZahal, O., Hook, S. E., Plaizier, K. and McBride, B. W. American Journal of Physiology - Regulatory, Integrative and Comparative Physiology. 300:R1515-R1523. [doi]
• Fatty acid profile of chaya (Cnidoscolus aconitifolius) leaves and fodder. 2011. Kumar, A., Or-Rashid, M. M., AlZahal, O. and Mcbride, B. W. Indian Journal of Animal Sciences. 81:864-869.
• The use of a radiotelemetric ruminal bolus to detect body temperature changes in lactating dairy cattle. 2011. AlZahal, O., AlZahal, H., Steele, M. A., Van Schaik, M., Kyriazakis, I., Duffield, T. F. and McBride, B. W. Journal of Dairy Science. 94:3568-74. [doi]

2010

• Effect of subacute ruminal acidosis on milk fat concentration, yield and fatty acid profile of dairy cows receiving soybean oil. 2010. AlZahal, O., Or-Rashid, M. M., Greenwood, S. L. and McBride, B. W. Journal of Dairy Research. 77:376-384. [doi]
• Fatty acid profile of colostrum and milk of ewes supplemented with fish meal and the subsequent plasma fatty acid status of their lambs. 2010. Or-Rashid, M. M., Fisher, R., Karrow, N., AlZahal, O. and McBride, B. W. Journal of Animal Science. 88:2092-2102. [doi]
• Influence of Wheat and Maize Starch on Fermentation in the Rumen, Duodenal Nutrient Flow and Nutrient Digestibility. 2010. Šimko, M., Čerešňáková, Z., Bíro, D., Juráček, M., Gálik, B., Straková, E., France, J., AlZahal, O. and McBride, B. W. Acta Veterinaria Brno. 79:533-541. [doi]
• Amino acid profile of chaya and its protein degradation rates in dairy cattle. 2010. Kumar, A., AlZahal, O., Singh, K. K. and McBride, B. W. Indian Journal of Animal Sciences. 80:737-740.
• Differential regulation of components of the apoptotic and ubiquitin-mediated proteolytic pathway in slow- and fast- twitch muscle type in lambs receiving increasing amounts of dietary non-structural carbohydrate. 2010. Greenwood, S. L., Steele, M., AlZahal, O., Hook, S. E., Swanson, K. C. and McBride, B. W. Canadian Journal of Animal Science. 90:421-428. [doi]
• In vitro nutritional evaluation of chaya (Cnidoscolus aconitifolius) for use as livestock feed. 2010. Kumar, A., AlZahal, O., Singh, K. K. and McBride, B. W. Indian Journal of Animal Sciences. 80:1008-1010.
• Plasma amino acid concentrations and mRNA expression of components related to protein degradation in lambs with nutritionally induced metabolic acidosis. 2010. Greenwood, S. L., AlZahal, O., Purdie, N. G., Swanson, K. C. and McBride, B. W. Canadian Journal of Animal Science. 90:537-546. [doi]

2009

• The effect of dietary fiber level on milk fat concentration and fatty acid profile of cows fed diets containing low levels of polyunsaturated fatty acids. 2009. AlZahal, O., Or-Rashid, M. M., Greenwood, S. L., Douglas, M. S. and McBride, B. W. Journal of Dairy Science. 92:1108-1116. [doi]
• The use of a telemetric system to continuously monitor ruminal temperature and to predict ruminal pH in cattle. 2009. AlZahal, O., Steele, M. A., Valdes, E. V. and McBride, B. W. Journal of Dairy Science. 92:5697-5701. [doi]
• Case Study – A Reduction of Polyunsaturated Fatty Acid Intake in a Lactating Dairy Cow Herd Increased Milk Fat Percentage. 2009. Dubuc, J., Kitts, B., LeBlanc, S. J., Or-Rashid, M. M., AlZahal, O. and McBride, B. W. The Bovine Practitioner. 43:90-96. [doi]
• Influence of glutamine infusion on ubiquitin, caspase-3, cathepsins L and B, and m-calpain expression in sheep with nutritionally induced metabolic acidosis. 2009. Greenwood, S. L., AlZahal, O., Swanson, K. C., Matthews, J. C. and McBride, B. W. Journal of Animal Science. 87:2073-2079. [doi]
• Ruminal acidosis and the rapid onset of ruminal parakeratosis in a mature dairy cow: a case report. 2009. Steele, M. A., AlZahal, O., Hook, S. E., Croom, J. and McBride, B. W. Acta Veterinaria Scandinavica. 51. [doi]
• Effects of nutritionally induced metabolic acidosis with or without glutamine infusion on acid-base balance, plasma amino acids, and plasma nonesterified fatty acids in sheep. 2009. Odongo, N. E., Greenwood, S. L., Or-Rashid, M. M., Radford, D., AlZahal, O., Shoveller, A. K., Lindinger, M. I., Matthews, J. C. and McBride, B. W. Journal of Animal Science. 87:1077-1084. [doi]

2008

• Plasma amino acid profile and expression of the ubiquitin-mediated proteolytic pathway in lambs with induced metabolic acidosis. 2008. Greenwood, S. L., Odongo, N. E., AlZahal, O., Swanson, K. C., Shoveller, A. K., Matthews, J. C. and McBride, B. W. Journal of Animal Science. 86:2651-2656. [doi]
• Studies on the production of conjugated linoleic acid from linoleic and vaccenic acids by mixed rumen protozoa. 2008. Or-Rashid, M. M., AlZahal, O. and McBride, B. W. Applied Microbiology and Biotechnology. 81:533-541. [doi]
• Ruminal temperature may aid in the detection of subacute ruminal acidosis. 2008. AlZahal, O., Kebreab, E., France, J., Froetschel, M. and McBride, B. W. Journal of Dairy Science. 91:202-207. [doi]
• Effects of monensin and dietary soybean oil on milk fat percentage and milk fatty acid profile in lactating dairy cows. 2008. AlZahal, O., Odongo, N. E., Mutsvangwa, T., Or-Rashid, M. M., Duffield, T. F., Bagg, R., Dick, P., Vessie, G. and McBride, B. W. Journal of Dairy Science. 91:1166-1174. [doi]

2007

• Effects of dietary strong acid anion challenge on regulation of acid-base balance in sheep. 2007. Las, J. E., Odongo, N. E., Lindinger, M. I., AlZahal, O., Shoveller, A. K., Matthews, J. C. and McBride, B. W. Journal of Animal Science. 85:2222-2229. [doi]
• Technical note: A system for continuous recording of ruminal pH in cattle. 2007. AlZahal, O., Rustomo, B., Odongo, N. E., Duffield, T. F. and McBride, B. W. Journal of Animal Science. 85:213-217. [doi]
• A mathematical approach to predicting biological values from ruminal pH measurements. 2007. AlZahal, O., Kebreab, E., France, J. and McBride, B. W. Journal of Dairy Science. 90:3777-3785. [doi]

2006

• Effects of mild heat stress and grain challenge on acid-base balance and rumen tissue histology in lambs. 2006. Odongo, N. E., AlZahal, O., Lindinger, M. I., Duffield, T. F., Valdes, E. V., Terrell, S. P. and McBride, B. W. Journal of Animal Science. 84:447-455. [doi]
• Acidogenic value of feeds. II. Effects of rumen acid load from feeds on dry matter intake, ruminal pH, fibre degradability and milk production in the lactating dairy cow. 2006. Rustomo, B., AlZahal, O., Cant, J. P., Fan, M. Z., Duffield, T. F., Odongo, N. E. and McBride, B. W. Canadian Journal of Animal Science. 86:119-126. [doi]
• Effects of rumen acid load from feed and forage particle size on ruminal pH and dry matter intake in the lactating dairy cow. 2006. Rustomo, B., AlZahal, O., Odongo, N. E., Duffield, T. F. and McBride, B. W. Journal of Dairy Science. 89:4758-4768. [doi]

2004

• Effects of monensin on ruminal forage degradability and total tract diet digestibility in lactating dairy cows during grain-induced subacute ruminal acidosis. 2004. Osborne, J. K., Mutsvangwa, T., Alzahal, O., Duffield, T. F., Bagg, R., Dick, P., Vessie, G. and McBride, B. W. Journal of Dairy Science. 87:1840-1847. [doi]