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Spring 2016
The goals of this research were to evaluate the interaction effects between photoperiod management and dietary grain allocation in lactating dairy cows and to determine if any relationships exist between photoperiod management and the persistency of lactation in selected dairy herds in Alberta....
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Elucidating the effects of photoperiod during gestation and lactation on mammary gene expression and function in cows and mice
DownloadSpring 2015
Photoperiod, or day length, generates a highly accurate biological calendar that allows animals to anticipate and adapt to environmental change throughout the year. Photoperiod coordinates both daily and yearly rhythms associated with sleep/wake cycles, behavior, and reproduction, including...
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The Effect of Risk for Subacute Ruminal Acidosis, Feeding Frequency, and Photoperiod on the Feeding Behaviour of Lactating Dairy Cows
DownloadFall 2016
Cows fed the same high-grain diet have a large variation in rumen pH and can be categorized as higher or lower risk for developing subacute ruminal acidosis (SARA). The objective of this research was to determine if differences in feeding behaviour existed between the two categories and if these...
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Spring 2014
Understanding the flowering gene complex in bread wheat is important to utilize the maximum production potential in a time-limited growing season. Vernalization (Vrn), photoperiod (Ppd) and earliness per se are the three genetic constituents of the flowering gene complex. A series of experiments...