This project will develop a design tool that can be used by consultant engineers who design these ponds and by the regulatory agencies, including our partner organization (the Toronto and Region Conservation Authority) to assess if a stormwater management pond will meet the thermal objectives for the protection of sensitive aquatic life, including the permanent pool volume, drawdown time, length-to-width ratio, number of berms, optimal depth, and the bottom-draw outlet position for a given pond.
Enzymes play an essential role in the animal nutrition industry and are used to increase the nutritional value of feedstuff, resulting in improved production cost, feed efficiency, and animal performance. Many manufacturers choose to pelleting feed, for reasons such as increased feed intake and feed efficiency. However, many enzymes become deactivated when exposed to the high temperatures used during the pelleting process, and the feed will no longer provide benefits to the animal. There is a need to identify enzyme products that can withstand temperatures used during the pelleting process.
The role of companion animals has evolved over the years of their domestication from that of purely utilitarian hunting or working partnerships to a relationship now more closely resembling that of a family member. Unsurprisingly, trends in companion animal nutrition have begun to closely shadow trends in human nutrition, reflecting the desire of pet owners to feed their companions diets which they consider healthy and beneficial for their pets wellbeing.
The main contribution by the interns will be to function as a research assistant to help with the labour intensive laboratory experiments, data analysis, and reporting tasks. The students will have a chance to work with the engineering staff at CHI and will provide additional support during the study.
The emission of methane, which has the ability to trap heat 25 times more than carbon dioxide, is lost during dairy manure processing and storage in lagoons before land application. The proposed research shall evaluate for the first time three new methods of reducing these emissions. The methods that shall be investigated include a novel synthetic enteric methane formation inhibitor (3-nitroxylpronanol), Penergetic g and biochar (charcoal) in pilot-scale systems. In addition, the mechanism by which these additives reduce the emission of methane shall be investigated.
The aim of this project is to determine which families are resistant to bacterial kidney disease, a bacterial infection that affects both wild and farmed Atlantic salmon. To do this many families of Atlantic salmon from a commercial aquaculture company are to be purposefully infected with the bacteria that causes the disease to establish which families have a high rate of survival and which have a low rate of survival.
Whey proteins in milk are detrimental to the rennet-induced coagulation of milk. In this project, we will use microfiltration membrane technique to concentrate the milk and to remove whey proteins. A process called diafiltration (DF) will also be used to further remove whey proteins by adding water to the MF concentrated milk and then filtered. MF and MF-DF milk have different whey protein contents and ionic concentration, which will change the coagulation behaviour of milk.
This project will evaluate the Civic Accelerator program in Guelph and research key features of the program. The Civic Accelerator is an innovative approach to economic development, using public sector procurement and challenge competitions to support âcivic techâ entrepreneurs, startups, students and companies. This project will support the on-going development of the Civic Accelerator program in Guelph as well as adoption of the model more broadly.
The B vitamin requirements of cattle were traditionally satisfied via rumen microbial synthesis. However, the B vitamin demands of the modern high producing dairy cow now exceed the synthesis rate by rumen microbes, leading to sub-optimal milk production and efficiency. An increased understanding of dietary factors driving ruminal synthesis and use of B vitamins will help identify when supplementation will benefit the cow. Although B vitamin kinetics in the dairy cow have not previously been modelled, data on concentrations and flows are available from extant sources.
Feather pecking (FP) in egg-laying hens, where individuals peck repetitively and excessively at other birds to pull out and eat their feathers, is a challenge for the industry with large economic and welfare implications. High prevalence of FP is reported (60-80%) and this is associated with mortality rates of up to 20-40%, which translates to hundreds of millions of birds dying due to FP every year.