Esteban Cardona González

Thesis Name

Thesis Abstract

Evaluating the impact of source and level of dietary protein on in vitro fertilization (IVF) conception rates of recipient cows in extensive beef grazing systems.

Why My Research is Important/Impacts

The project will seek to improve reproductive performance in beef cattle ET programs. The calving rates for ET programs is generally low, less than 50%. The improved protocols that result from this research could increased calving rates by upwards of 10%. Given the value of ET progeny is often high (upwards of $10,000), a 10% increase in conception rates is significant and would see an additional $100,000 in revenue generated in a 100 recipient program. However, the key outcome for any improvements in ET program is the increased rate of maternal genetic dissemination in the Northern Beef herd. This value is difficult to calculate, but will have significant impacts on trait selection in seedstock females and subsequent diffusion through commercial herds. Furthermore, the research will provide evidence to support the use (or removal) of leaucaena from breeding herd management, reducing the industries reliance on folklore and potentially increasing reproductive efficiancy.