Portfolio

2024

• The impact of a gut health supplement on growth performance, indicators of gastrointestinal health, and carcass characteristics in finishing feedlot steers.. 2024. Lesperance, W. J., Duarte, M., Cant, J., Alzahal, O. and K. Wood International symposium on Ruminant Physiology, Chicago, IL.
• Impact of a microencapsulated blend of fermentation extracts, essential oils, and organic acids on the productivity of dairy cows. 2024. AlZahal, O., Bunod, J.-D. and Fontaine, J. Journal of Dairy Science. 107(Suppl. 1):437.
• Female dairy calves fed with a rumen-protected B-vitamin blend around weaning may have better odds of reaching first lactation and improving milk production.. 2024. Roszkos, R., Bouchut, D., Asselstine, V., AlZahal, O. and Brisson, V. Journal of Dairy Science. 107(Suppl. 1):331.
• Preference for and acceptability of a novel, fat-microencapsulated anionic salt by dry dairy cows.. 2024. Bruner, S. J., Wood, K. M., AlZahal, O. and DeVries, T. J. Journal of Dairy Science. 107(Suppl. 1):243.
• Effets d’une supplémentation en vitamines B rumino-protégées sur les performances des génisses à leur entrée en 1ère lactation. 2024. Dominique Bouchut, Robert Roszkos, Ousama Alzahal, Stéphane Benaben HAL. https://hal.science/hal-05109741v1.

2023

• Impact of microencapsulated fermentation extracts, essential oils, and organic acids on productivity and fecal microbiota of dairy cows. 2023. Crespo, S. E. Izzo, Villalobos, O., AlZahal, O., Lahaye, L. and Costa, M. Symposium on Gut Health in Production of Food Animals, St. Louis, Missouri. Pages:19.
• A rumen-protected blend of B vitamins improved the preweaning growth rate of Jersey female calves fed ryegrass pasture. 2023. Balogun, R. and AlZahal, O. Journal of dairy Science. 106(Suppl. 1):365.
• Evaluation of a rumen-protected B-vitamin blend in a California Jersey dairy.. 2023. Brisson, V., Ortega, K., AlZahal, O., Evans, E. and Fontaine, E. Journal of Dairy Science. 106(Suppl. 1):288.
• Health, reproduction, and lactational performance of dairy cows supplemented with a rumen-protected blend of B vitamins under a grazing system.. 2023. Balogun, R., Henry, A. and AlZahal, O. Journal of Dairy Science. 106(Suppl. 1):286.
• Impacts of active dry yeast (Saccharomyces cerevisiae) on gut permeability in finishing beef cattle. 2023. Williams, Melissa S, AlZahal, Ousama, Steele, Michael A, Wood, Katharine M and Penner, Greg B Journal of Animal Science. 101:139-140.

2022

• Microencapsulation of antioxidants to improve availability for ruminants. 2022. Benaben, S, Bouchut, D, AlZahal, O, Fontaine, E and Evans, E Journal of Dairy Science. 105(Suppl. 1):430.
• Evaluation of a rumen-protected B vitamin blend in 3 Upper Midwest dairy farms using robotic feeding and milking equipment. 2022. Evans, E, Gwyn, C, AlZahal, O and Fontaine, E Journal of Dairy Science. 105(Suppl. 1):429.
• The effect of a blend of rumen-protected B vitamins on the performance of calves during the weaning period. 2022. Roszkos, R, AlZahal, O and Bouchut, D Journal of Dairy Science. 105(Suppl. 1):346.
• Effets d’unesupplémentationenvitamines B rumino- rotégées surlesperformancesdesveaux pendantlapériodedesevrage. 2022. Bouchut, Dominique, Roszkos, Robert, Benaben, Stéphane and Alzahal, Ousama HAL. https://hal.science/hal-04734581v1.

2021

• Effect of fibrolytic enzyme on lactational performance, feeding behaviour, rumen fermentation and nutrient digestibility in dairy cows fed whole-plant faba bean silage-based diet.. 2021. Yang, J., Christensen, D. A., Lardner, H., Oquendo, V. H. Guevara, Refat, B., AlZahal, O. and Yu, P. Journal of Dairy Science. 104(Suppl. 1):11.
• Periparturient performance of dairy cows receiving a rumen-protected blend of B vitamins and choline during the transition period: A meta-analysis of 23 feeding trials. 2021. Evans, E., AlZahal, O., Gwyn, C. and Leclerc, H. Journal of Dairy Science. 104(Suppl.):315.
• Effect of adding different levels of fibrolytic enzyme solu tion on degradability and kinetics of whole-crop faba bean silage. 2021. Yang, J., Christensen, D. A., Lardner, H. (B.), Oquendo, V. H. Guevara, Refat, B., AlZahal, O. and Yu, P. Journal of Dairy Science. 104(Suppl. 1):298.

2020

• Supplementing beef cattle finishing diets with ruminal protected live yeast affected fatty acid profiles in meat. 2020. Yang, Wenzhu, He, Maolong, Shen, Yizhao, Ran, Tao and Alzahal, Ousama Journal of Animal Science. 98:443-444. [doi]

2019

• The impact of Saccharomyces cerevisiae on animal performance and rumen health indicators during the late finishing phase for feedlot steers. 2019. Williams, Melissa S, AlZahal, Ousama, Mandell, Ira B and McBride, Brian W Journal of Animal Science. 97:287-287. [doi]
• Impact of a fibrolytic enzyme additive on digestibility and performance in the grower and early finisher phases of feedlot cattle. 2019. Williams, Melissa S., AlZahal, Ousama, Mandell, Ira B. and McBride, Brian W. ASAS-CSAS Annual Meeting and Trade Show, Austin TX.
• Active dry yeast (Saccharomyces cerevisiae) supplementation boosts performance of growing lambs. 2019. Djouvinov, Dimcho and AlZahal, Ousama Proceedings of the British Society of Animal Science, Advances in Animal Biosciences. 10:120. [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, Tao, Shen, Yizhao, Saleem, Atef M, AlZahal, Ousama, Beauchemin, Karen A and Yang, Wenzhu Journal of Animal Science. 96:5345-5345. [doi]
• Effects of supplementing ruminally protected and non-protected active dried yeast on growth performance and carcass traits in finishing beef steers. 2018. Ran, T., Shen, Y., Saleem, A., Chen, L., AlZahal, O., Beauchemin, K. and Yang, W. Journal of Animal Science. 96(Suppl 3):396. [doi]
• Supplementation of high-grain diet with ADY either as-is or encapsulated reduces fecal E. coli counts of finishing beef steers. 2018. Ran, T., Shen, Y., Saleem, A., Ametaj, B., AlZahal, O., Beauchemin, K. and Yang, W. Journal of Animal Science. 96(Suppl. 3):520. [doi]
• Evaluating the effects of fibrolytic enzymes derived from Trichoderma reesei fungal extraction on rumen fermentation, omasal nutrient flow and production performance in dairy cows during early lactation. 2018. Refat, B., Christensen, D., McKinnon, J., Beattie, A., McAllister, T., Yang, W., AlZahal, O. and Yu, P. Journal of Dairy Science. 101(Suppl.2):14.
• The effect of fibrolytic enzymes on lactation performance, feeding behavior, and digestibility in high-producing dairy cows fed a barley silage-based diet. 2018. Refat, B., Christensen, D. A., McKinnon, J. J., Beattie, A. D., McAllister, T., Yang, W., AlZahal, O. and Yu, P. Journal of Dairy Science. 101(Suppl. 2):355.
• Effects of an active dry yeast Supplement on ruminal pH, feeding performance, and carcass characteristics of feedlot steers.. 2018. Crossland, W. L., A. B. Norris1, C. M. Cagle, Tedeschi, L. O., Carstens, G. E., Sawyer, J. E., Callaway, T. R. and AlZahal, O. Journal of Animal Science. 96(Suppl. S1):63. [doi]
• Impact of active dry yeast on production parameters in Friesian × Holstein cows during early lactation. 2018. AlZahal, O., Febery, E. and Dunne, J. Journal of Dairy Science. 101(Suppl.2):305.

2017

• The application of Trichoderma fermentation extract to growing and finishing rations improved beef cattle performance. 2017. AlZahal, O., Waite, A., Walker, N. D., Byrd, T. and Bechtol, D. Journal of Animal Science. 95(Suppl. 4):269. [doi]
• Modulation of sub-acute ruminal acidosis by active-dry yeast supplementation and its effect on rumen fungal and protozoal populations in liquid, solid, and epimural fractions. 2017. Ishaq, S. L., AlZahal, O., Walker, N. and McBride, B. Page 30 in Congress on Gastroinestinal Function, April 10-12, 2017. Chicago, Illinois.

2016

• The influence of active dry yeast on ruminal microbial metatrasnscriptome and community during subacute ruminal acidosis. 2016. AlZahal, Ousama, Li, Fuyong, Guan, Le Luo, Walker, Nicola D. and McBride, Brian W. Gut Microbiology. Gut Microbiology, Clermont-Ferrand, France, June 20-23.

2015

• Investigating the impact of dietary changes on rumen microbial community during the transition period in Holstein dairy cows using high-throughput sequencing. 2015. AlZahal, O., Ishaq, S. L., St-Pierre, B., Wright, A-D G. and McBride, B. W. Journal of Dairy Science. 98 (Suppl. 2):735.

2014

• Proteins involved in intracellular pH regulation in rumen epithelial cells are modulated during the transition period in Holstein dairy cows. 2014. Laarman, A., Kleinberg, A., Steele, M. A., AlZahal, O. and McBride, B. W. Page 26 in Symposium on Gut Health in Production of Food Animals, St. Louis, Missouri. Federation of Animal Science Societies, Champaign, IL.
• Expression of the ovine hippocampal glucocorticoid receptor (GR) and mineralcorticoid receptor, and adrenal melanocortin 2 receptor and GR genes in offspring born to ewes supplemented with fishmeal and challenged with endotoxin during late pregnancy. 2014. Fisher, R. E., Or-Rashid, M. M., AlZahal, O., Quinton, M., McBride, B. W., Boermans, H. J. and Karrow, N. A. The 10th World Congress on Genetics Applied to Livestock Production, Vancouver, August 17-22 2014.
• Effects of butyrate during subacute ruminal acidosis on VFA transport capacity in the rumen epithelium of Holstein dairy cows. 2014. Laarman, A. H., Dionissopoulos, L., AlZahal, O., Greenwood, S. L., Steele, M. A. and McBride, B. W. Journal of Dairy Science. 97(E-Suppl. 1):105.

2013

• Do cows under chronic subacute ruminal acidosis attempt to self-medicate? 2013. Hendriksen, E., ALZahal, O. and McBride, B. W. Page 412 in the 64th Annal Meeting of the European Federation of Animal Production, Nantes, France.
• Rumen epithelial adaptation during the transition period is associated with structural changes and transcriptomic signatures. 2013. Steele, M., Zettler, C., AlZahal, O., Matthews, J. C. and McBride, B. Journal of Dairy Science. 96(E-Suppl. 1):23.
• Effect of Saccharomyces cerevisiae on ruminal microbial community during subacute ruminal acidosis. 2013. AlZahal, O., Dionissopoulos, L., Walker, N. D. and McBride, B. W. Page 26 in Symposium on Gut Health in Production of Food Animals, Kansas City, MO. Federation of Animal Science Societies, Champaign, IL.
• Saccharomyces cerevisiae can alleviate the impact of subacute ruminal acidosis in dairy cattle. 2013. AlZahal, O., Walker, N. and McBride, B. W. Page 401 in the 64th Annal Meeting of the European Federation of Animal Production, Nantes, France.
• Transcriptome analysis of epithelial and connective tissue fractions of rumen papillae from lactating dairy cattle. 2013. Steele, M., AlZahal, O., Greenwood, S., Matthews, J. C. and McBride, B. W. Journal of Dairy Science. 96(E-Suppl. 1):509.
• Butyrate supplementation affects mRNA abundance of genes involved in glycolysis, lipogenesis and oxidative phosphorylation in the rumen epithelium of Holstein dairy cows. 2013. Laarman, A. H., L. Dionissopoulos, O. ALZahal, M. A. Steele, J. C. Matthews, and B. W. McBride Page 23 in Symposium on Gut Health in Production of Food Animals. November 11-13, 2013, Kansan City, Missouri.

2011

• Subacute ruminal acidosis (SARA) in dairy cows leads to increases in ruminal lipopolysaccharide (LPS), plasma LPS binding protein, and correlates with the rumen epithelial interleukin-6 (IL-6) response. 2011. Dionissopoulos, L., Steele, M. A., AlZahal, O., Plaizier, J. C., Li, S. and McBride, B. W. Canadian Journal of Animal Science. 91:503. [doi]
• The effect of subacute ruminal acidosis on milk fatty acid profile in dairy cattle. 2011. AlZahal, O., Or-Rashid, M. M., Steele, M. A. and McBride, B. W. Canadian Journal of Animal Science. 91:502. [doi]
• Milk fat from cows with subacute ruminal acidosis increases fasting blood glucoseand insulin, but does not impair insulin-stimulated glucose transport when fed to rodents. 2011. Hopkins, L. E., AlZahal, O., Or-Rashid, M., Ritchie, I. R., Dyck, D. J. and McBride, B. W. Canadian Journal of Animal Science. 91:478. [doi]
• Regulation of intake of febrile animals with subacute ruminal acidosis.. 2011. Van Schaik, M., AlZahal, O., Walpole, M., Duffield, T. and McBride, B. W. Canadian Journal of Animal Science. 91:504. [doi]
• Rumen epithelial adaptation to high-grain diets in lactating dairy cattle involves the coordinated expression of IGF binding proteins and cholesterologenic enzymes.. 2011. Steele, M. A., Dionissopoulos, L., AlZahal, O., Doelman, J. and McBride, B. W. Canadian Journal of Animal Science. 91:504. [doi]
• Adaptation responses to an experimentally induced systemic acidosis in yearling wether lambs. 2011. Walpole, M., Greenwood, S., AlZahal, O., Steele, M., Lindinger, M. and McBride, B. Canadian Journal of Animal Science. 91:482. [doi]

2010

• The use of a wireless ruminal bolus to detect subacute ruminal acidosis and other health challenges in cattle. 2010. ALZahal, O., H. ALZahal, M. A. Steele, I. Kyriazakis, T. F. Duffield, and B. W. McBride Page 69 in The 61st Annual Meeting of European Association for Animal Production, Heraklion, Crete Island, Greece.
• Relationships between body surface thermographs with rumen pH, rumen and vaginal temperature in lactating dairy cows fed a control or an acidogenic diet and challenged with E. coli lipopolysaccharide. 2010. Montanholi, Y.R., O. ALZahal, S. P. Miller, K. C. Swanson, F. S. Schenkel, and B. W. McBride Page 70 in The 61st Annual Meeting of European Association for Animal Production, Heraklion, Crete Island, Greece.

2009

• Fatty acid profile of colostrum and milk of ewes supplemented with docosahexaenoic acid and the subsequent plasma fatty acid status of their lambs.. 2009. Or-Rashid, M. M., Fisher, R., Karrow, N., AlZahal, O. and McBride, B. W. Canadian Journal of Animal Science. 89:139-139. [doi]
• Impact of nutritionally induced metabolic acidosis and glutamine infusion on acid-base, plasma amino acid and plasma non-esterified fatty acids in sheep.. 2009. Odongo, N. E., Greenwood, S. L., Or-Rashid, M. M., Radford, D., AlZahal, O., Shoveller, A. K., Lindinger, M., Matthews, J. C. and McBride, B. W. Canadian Journal of Animal Science. 89:140-140. [doi]
• Characterization of Rumen Epithelial Structure and Function in Lambs Fed Rapidly Fermentable Carbohydrates. 2009. Steele, M. A., S. Greenwood, S. E. Hook, O. ALZahal, and B. W. McBride Journal of Dairy Science. 92(Suppl. 1):40.
• Rumen protozoa can produce CLA from linoleic acid. 2009. Or-Rashid, M. M., AlZahal, O. and McBride, B. W. Canadian Journal of Animal Science. 89:134-134. [doi]
• Impact of nutritionally induced metabolic acidosis on mRNA expression of components of the ubiquitin-mediated proteolytic pathway, cathepsins B and L, caspase-3 and m-calpain in ruminants.. 2009. Greenwood, S. L., Odongo, N. E., AlZahal, O., Matthews, J. C. and McBride, B. W. Canadian Journal of Animal Science. 89:135-135. [doi]
• Plasma fatty acid profile of gestating ewes supplemented with docosahexaenoic acid.. 2009. Or-Rashid, M. M., Fisher, R., Karrow, N., AlZahal, O. and McBride, B. W. Canadian Journal of Animal Science. 89:138-138. [doi]
• Nutritional Induction of Metabolic Acidosis. 2009. Greenwood, S. L., O. ALZahal, M. A. Steele, S. E. Hook, and B. W. McBride Proceedings of the 7th International Sheep Veterinary Congress, Stavanger, Norway.
• Feed sorting of dairy cows receiving diets different in dietary fibre level. 2009. ALZahal, O., M. S. Douglas, S. L. Greenwood, and B. W. McBride Journal of Dairy Science. 92(Suppl. 1):94.
• Morphologic adaptations of the rumen epithelium during subacute ruminal acidosis.. 2009. Steele, M. A., Hook, S. E., Alzahal, O., Croom, W. J. and McBride, B. W. Canadian Journal of Animal Science. 89:141-142.
• A statistical methodology for the analysis of continuous measurements of ruminal pH in dairy cattle.. 2009. AlZahal, O., Vander, V. G. and McBride, B. W. Canadian Journal of Animal Science. 89:140-140. [doi]
• Dramatic shifts in rapidly fermentable carbohydrates influence mRNA expression of IGFBP3, IGFBP5 and IGFBP6 in rumen papillae. 2009. Steele, M. A., S. E. Hook, S. L. Greenwood, O. ALZahal, and B. W. McBride. Page 362 in Proceedings of the 11th International symposium on ruminant Physiology, Clermont-Ferrand, France.

2008

• Analysis of individual Canadian Holstein dairy cow lactation curves using standard growth functions. 2008. Odongo, N. E., S. Lopez, R. McBride, E. Kebreab, J. Dijkstra, M. H. Fathi Nasri, O. ALZahal, B. W. McBride, and J. France Proceedings of the 2008 Meeting of the Animal Science Modelling Group. Canadian Journal of Animal Science. 88:736. [doi]

2007

• Impact of metabolic acidosis on amino acid metabolism in lambs. 2007. Greenwood, S. L., Wright, T. C., Gilmore, J., Las, J. E., Odongo, N. E., AlZahal, O., Shoveller, A. K., Matthews, J. C. and McBride, B. W. Journal of Dairy Science. 90(Suppl. 1):83.
• Subacute ruminal acidosis increases milk fat depression with diets supplemented with polyunsaturated fatty acids. 2007. AlZahal, O., Or-Rashid, M. R., Greenwood, S. L., Douglas, M. S. and McBride, B. W. Journal of Dairy Science. 90(Suppl. 1):561.
• Effect of yeast culture on ruminal pH in Holstein dairy cows.. 2007. Douglas, M. S., O. ALZahal, S. L. Greenwood, M. Or-Rashid, and B. W. McBride Journal of Dairy Science. 90(Suppl. 1):352.
• Ruminal temperature may aid in the detection of subacute ruminal acidosis. 2007. AlZahal, O., Kebreab, E., France, J., Froetschel, M. and McBride, B. W. Journal of Dairy Science. 90(Supple. 1):562-562.

2006

• Feeding strategies to minimize the extent of enteric methane production form dairy cows into the environment. 2006. Odongo, N. E., A. Kramer, M. M Or-Rashid, J. E. Las, O. ALZahal, B. Kerrigan, E. Kebreab, J. France, T. May, and B. W. McBride Page 19 in Proceeding of the Workshop on Environment and Agriculture at Guelph: Multi-disciplinary Research and its Challenges, Oct 2nd, 2006.
• Effects of rumen acid-load from feeds on ruminal pH, dry matter intake, fiber degradability and milk production in the lactating dairy cow.. 2006. Rustomo, B., AlZahal, O., Cant, J. P., Fan, M. P., Duffield, T. F., Odongo, N. E. and McBride, B. W. Journal of Dairy Science. 89:216.
• Effects of monensin and dietary soybean oil on milk fatty acid profile in lactating cows. 2006. ALZahal, O., N. E. Odongo, M. Or-Rashid, T. Mutsvangwa, T. F. Duffield, R. Bagg, P. Dick, G. Vessie, and B. W. McBride Journal of Dairy Science. 89(Suppl. 1):234.
• Effects of chronic metabolic acidosis on acid-base balance and plasma free amino acids in lambs.. 2006. Odongo, N. E., Las, J. E., Wadud, S., AlZahal, O., Lindinger, M., Shoveller, A., Matthews, J. C. and McBride, B. W. Journal of Dairy Science. 89(Suppl. 1):215.
• Mathematical methods for predicting biological values from continuous rumen pH measurements. 2006. ALZahal, O., E. Kebreab, J. France, and B. W. McBride Page 572 in Proceeding of the 2006 Meeting of Animal Science Modelling Group, Canadian Journal of Animal Science,. [doi]
• Feeding strategies to minimize the extent of enteric methane emissions from dairy cows into the environment.. 2006. Odongo, N. E., Kramer, A., Las, J. E., AlZahal, O., Kerrigan, B., Kebreab, E., France, J., May, T. and McBride, B. W. Canadian Journal of Animal Science. 86:595-595.
• Effects of rumen acid-load from feed and forage particle size on ruminal pH, feed intake and milk production and composition.. 2006. Rustomo, B., AlZahal, O., Odongo, N. E., Duffield, T. F. and McBride, B. W. Journal of Dairy Science. 89(Suppl. 1):216.
• Measurement of gaseous emissions from ruminants using a mobile system. 2006. Odongo, N. E., A. Kramer, J. E. Las, O. ALZahal, B. Kerrigan, E. Kebreab, J. France, T. May, and B. W. McBride. 2006. Page 18 in the Second Meeting of the Animal Production and Manure Management Network, London, ON, March 8 2006.

2005

• Effects of mild heat stress and sub-acute ruminal acidosis on acid-base balance and gastrointestinal tissue histology in lambs. 2005. Odongo, N., Alzahal, O., Lindinger, M., Duffield, T., Valdes, E., Terrell, S. and McBride, B. Journal of Dairy Science. 88(Supple. 1):193.
• A cordless system for continuous ruminal pH recording in dairy cows. 2005. Alzahal, O., Rustomo, B., Duffield, T. F. and McBride, B. W. Journal of Dairy Science. 88(Suppl. 1):189.
• Effects of monensin and dietary soy oil on milk fat percentage in lactating cows. 2005. Alzahal, O., Odongo, N. E., Mutsvangwa, T., Duffield, T. F., Bagg, R., Dick, P., Vessie, G. and McBride, B. W. Journal of Dairy Science. 88(Suppl. 1):183.