– Cunningham-Hollinger , Z. Gray, K. Christensen, W. Means, S. Lake, S. Paisley, K. Cammack and A. Meyer
Canadian Journal of Animal Science, Vol 102(4), December 2022 (https://cdnsciencepub.com/doi/pdf/10.1139/cjas-2022-0015)
Meat production is projected to increase by 48,000 kg by the year 2027, and beef production specifically is projected to be 21% greater in developing countries and 9% greater in developed countries in 2027. To allow for this increase in production, improvements in feed efficiency will be required to maintain or reduce input costs while increasing productivity. Residual feed intake (RFI) has been used as a measure of feed efficiency in both research and production fields, as it allows for selection of improved animal feed efficiency without increasing mature body weight.
Hereford-Angus crossbred steers (year 1: 59 steers); year 2: 75 steers) from a single contemporary group in each year (birth to slaughter) were used in a 2-year study.
The presence of small intestinal mass differences only in year 1, when the Continue reading