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Predicting Voluntary Forage Intake Of Supplemented Beef Cattle, Connor Biehler
Predicting Voluntary Forage Intake Of Supplemented Beef Cattle, Connor Biehler
Masters Theses
A major priority of beef cattle production is to meet animal nutrient requirements in order to achieve a desired level of productivity. Accurately predicting voluntary forage intake (VFI) is necessary to accurately predict the total nutrient intake of grazing or forage-fed beef cattle that are also supplemented with other sources of nutrients. Therefore, the objectives of this experiment were to utilize data from published literature to 1) identify factors that explain variation in VFI, and 2) develop and validate one or more mathematical models that predict VFI or total nutrient intake of grazing or forage-fed and supplemented beef cattle. A …
Effects Of A Moderate And Aggressive Implant Strategy On The Rumen Microbial Community And Metabolome In Steers, Madison Henniger
Effects Of A Moderate And Aggressive Implant Strategy On The Rumen Microbial Community And Metabolome In Steers, Madison Henniger
Masters Theses
The effects of growth-promoting implants have been well-defined for their ability to impact growth in beef cattle. Production-relevant microbiomes in the rumen have also been associated with growth traits. However, the role of implant strategies on the rumen microbiome is not understood. The objective was to determine if varying doses of implant hormones cause gain-associated ruminal microbial community shifts. To assess this, a completely randomized design was used and 336 fall-born steers between 450-470 days of age from the germplasm evaluation population at the US Meat Animal Research Center (Clay Center, NE) were divided into two treatment groups: 1) a …