María E. Rodríguez Espinosa, V. Guevara-Oquendo, David A. Christensen, Peiqiang Yu
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The Effects of Raw and Steam-Pressure Toasted Faba Bean Seeds in the Production Performance in Lactating Dairy Cows
Introducing new feeds for feeding options requires reliable information to prove beneficial impacts on animal productivity. The objective of the study was to evaluate the effects of 10% inclusion of raw Faba bean seeds (R-FBS) and steam-pressure toasted FBS (SP-FBS) on dairy production performance and metabolism. Snowbird FBS were processed by steam pressure toasting (SPT) at 121°C for 0, 7.5, 15, and 30 min. Total mixed rations (TMRs) were prepared using R-FBS (FBS0) and SP-FBS (FBS7.5, FBS15, and FBS30). The TMRs were fed to cows (2nd and 3rd lactation, 69±15 DIM, and 720 kg mean BW) for 120 days (November 2020 to February 2021). Data were analyzed using a repeated 4×4 LSD model with treatment as the fixed effect and cows as the random effect. Feed efficiency was linearly decreased as processing times increased (P = 0.02) from 1.63 with FBS0 to 1.52 with FBS30. Milk urea nitrogen (MUN) decreased from 12.18 with FBS0 to 11.10 mg/dl with FBS30 (linear P < 0.01). Heating FBS for 7.5 min could be suitable for increasing milk fat and feed efficiency in dairy cows. We believe that high-lactating dairy cows can be fed locally grown Faba beans to support their production performance.
期刊介绍:
Published since 1957, this quarterly journal contains new research on all aspects of animal agriculture and animal products, including breeding and genetics; cellular and molecular biology; growth and development; meat science; modelling animal systems; physiology and endocrinology; ruminant nutrition; non-ruminant nutrition; and welfare, behaviour, and management. It also publishes reviews, letters to the editor, abstracts of technical papers presented at the annual meeting of the Canadian Society of Animal Science, and occasionally conference proceedings.