RANGE COW ADAPTIVE MECHANISMS TO STRESSORS: GENETIC, METABOLIC AND BEHAVIORAL
Livestock and Range Research Laboratory (LARRL)
2012 Annual Report
1a.Objectives (from AD-416):
Elucidate adaptive mechanisms that promote energy efficiency in the range beef cow. Various measurements exposing physiological/metabolic changes will be evaluated based on their genetic origins.
1b.Approach (from AD-416):
Cows and their daughter have been developed and managed based upon a factorial approach to prenatal and post natal nutritional management. Production, physiological and metabolic measurements will be used to assess cow longevity (based on reproductive rate) and economic efficiency. Microarray analysis will be implemented to establish the association between genetic background and important traits related to stress adaption.
A method for rapid recognition of range cows that tend to be later conceiving while experiencing weight loss after calving is in final stages of development. Manuscript is in progress and soon to be submitted.