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May 2023

Susan Zhang's PhD Defence

Ovarian follicular development is an important process that ensures female reproductive health and ovarian function. Many nutrients and microRNAs are known to play a role in regulating follicular cell proliferation, differentiation, extracellular ma-trix formation and ovulation during follicular development. Choline is an essential nutrient that has been shown to play criti-cal roles in the development and function of organs such as the brain and liver. It is reported that aberrant choline metabolism occurs in many ovarian-related diseases.

Tianna Sullivan's MSc Defence

Genetic selection of dairy cattle for improved stressed resiliency is one strategy for mitigating the harmful effects of stressors that are expected to intensify as a result of climate change. With global temperatures increasing 0.15-0.20 °C since 1975, there has been a reduction in the quantity and quality of feedstuffs and drinking water, promoting the survival and distribution of pathogens and their vectors.

MSc Defence Notice for Kyle Hoeksema

Feed efficiency has been a major topic of interest in the dairy industry over the past decade. In recent years, feed efficiency in lactating animals has been incorporated into selection indices, but little is known about feed efficiency in calves. The objective of this thesis was to investigate feed efficiency in preweaning Canadian Holstein calves and estimate its genetic parameters. Preweaning is a significant period in a calf’s life, as man-agement can impact lifetime productivity, and rearing costs are a major expense for producers.

Emily Kim's PhD Defence

Coccidiosis is an avian parasitic disease, caused by the protozoan genus Eimeria, and a significant contributor to economic losses in poultry production due to its detrimental effects on nutrient absorption and growth performance. A meta-analysis was first completed to summarize and quantify the effects of an Eimeria infection on the AID of AA in broiler chickens. Experiment 1 was conducted to determine the SID of AA of main feed ingredients either fed as a single ingredient-based diet or a mixed ingredient-based diet to broiler chickens infected with Eimeria.

Anastasia Tsementzis

Formulating broiler starter diets incorporates specialty highly digestible protein feedstuffs (SPF) in partial replacement of soybean meal (SBM) and antibiotic growth promoters (AGP) in alignment with immature digestive capacity. There is limited comparative data on the effectiveness of SPF on lifetime growth performance, gastrointestinal function and metabolism. Experiments were conducted to assess impacts of 4 SPF (enzyme treated soybean meal, soy protein concentrate, pork meal, and black soldier fly larvae meal) in starter on these parameters.

CCSAW Research Symposium

Registration is now open for the CCSAW Research Symposium, happening May 10 from 9 a.m. to 5:30 p.m. at the Lifetime Learning Centre, room 1714. Register by May 3 online and view a list of speakers: https://www.eventbrite.com/e/2023-ccsaw-research-symposium-registration-614334520087

Carolina Reyes Rodriguez's PhD Defence

Control by insulin of changes in glucose, amino acid and fatty acid partition-ing between early and late lactation dairy cows

Jade St. Peter's MSc Defence

Influence of Grazing Management Strategies on Forage Quality/quantity and Animal Performance in an Ontario Cow Calf System

Poultry Industry Council Research Impacts Day

Highlighting the ways the poultry industry is staying at the forefront of production by implementing all the cutting-edge benefits from research.  

FARE SEMINAR: The Economics of Value Chains

The Department of Food, Agricultural and Resource Economics (FARE) is pleased to welcome Dr. David Ziberman, University of California Berkley, for a seminar on The Economics of Value Chains. Abstract:

Wenyi Fan's PhD Defence

Therapeutic Antimicrobials in Modulation of Gut Health, Growth Performances, Crude Protein and Amino Acid Utilization and Gut Microbiome in Weanling Pigs

CNM SEMINAR: Applying Nutrition Modelling to the Equine Sector

Welcome to the May installment of the Nutrition Seminar Series, hosted by the Centre for Nutrition Modelling (Animal Biosciences Department). Each month, we continue to deliver seminars from a different lab within the ABSC Nutrition group, and share their exciting new research in a dynamic manner.