Affiliation:
1. Teagasc, Animal & Grassland Research and Innovation Centre, Grange, Dunsany, Co. Meath C15 PW93, Ireland
2. School of Agriculture and Food Science, University College Dublin, Belfield, Dublin 4 D04 V1W8, Ireland
Abstract
The study objective was to determine intake and performance of beef cattle individually offered perennial ryegrass-dominant grass silage ad libitum supplemented with 4 kg dry matter daily of, rolled barley or maize meal-based concentrate rations containing supplements of flaked field beans, flaked peas, maize dried distillers grains (MDD) or maize gluten feed (MGF) for 110 days (Experiment 1), rolled barley or rolled oats with or without supplements of flaked field beans or flaked peas for 146 days (Experiment 2), and to quantify the nitrogen balance of diets similar to those offered in Experiment 2 (Experiment 3). The protein supplements were formulated to have similar crude protein concentrations. Cereal type or protein source did not affect intake, growth, feed efficiency and carcass traits in Experiment 1 or 2. Inclusion of a legume protein supplement with barley or oats had no effect on intake or growth performance (Experiment 2), whereas their exclusion decreased nitrogen intake, plasma urea concentrations and urinary and total nitrogen excretion (Experiment 3). The feeding value of barley was similar to oats and maize meal, and flaked beans and peas were similar to MGF and MDD, as supplements to grass silage. Excluding protein ingredients from a cereal-based concentrate did not affect animal performance and reduced nitrogen excretion.
Subject
General Veterinary,Animal Science and Zoology
Reference73 articles.
1. Park, R.S., and Stronge, M.D. (, January July). Recent developments in feeding beef cattle on grass silage-based diets. Proceedings of the XIVth International Silage Conference, Belfast, Ireland.
2. A comparison of first-, second- and third-cut timothy silages in the diets of finishing beef bulls;Huuskonen;Agric. Food Sci.,2017
3. Effect of pre-grazing herbage mass on pasture production and performance of suckler-bred steers during the grazing season and subsequent indoor finishing period;Doyle;Livest. Sci.,2022
4. The effect of cereal type and feeding frequency on intake, rumen fermentation, digestibility, growth and carcass traits of finishing steers offered a grass silage-based diet;Drennan;Ir. J. Agric. Food Res.,2006
5. Comparison of rolled barley with citrus pulp as a supplement for growing cattle offered grass silage;Lenehan;Adv. Anim. Biosci.,2017
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