The effect of pasture allowance and supplementation on feed efficiency and profitability of dairy systems

Journal of Dairy Science
P R TozerL D Muller

Abstract

Partial budgeting was used to compare income over feed costs of high-yielding Holstein cows based on data from an experiment with 4 dietary treatments arranged in a 2 x 2 factorial. The factors were low (25 kg DM/cow per day) and high (40 kg DM/cow per day) pasture allowance (PA) and supplemental grain fed at 1 kg/4 kg of milk or no supplemental grain fed. The 4 treatments were low PA unsupplemented (LPAU), low PA concentrate supplementation (LPAC), high PA unsupplemented (HPAU), and high PA concentrate supplementation (HPAC). Two management systems were modeled. The first, a fixed herd size flexible rotation length model, and the second, a flexible herd size model where rotation length was fixed. The LPAC treatment yielded the highest income over feed costs, followed by the HPAC treatment. The treatment generating the lowest income was the HPAU system. The low PA systems generated more income than did the high PA systems for equivalent supplemental feeding strategies. The results also showed that feeding supplemental grain increased the income-over-feed costs compared with systems that did not feed supplemental grain. In most treatments, comparing the fixed herd against the flexible herd models, the flexible herd size model ge...Continue Reading

References

May 1, 1985·The Journal of Dairy Research·J D Leaver
Mar 5, 2003·Journal of Dairy Science·F BargoJ E Delahoy
Apr 22, 2003·Journal of Dairy Science·P R TozerL D Muller
Dec 5, 2003·Pediatrics·Elizabeth AriasBernard Guyer

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Citations

Oct 11, 2017·Journal of Dairy Science·N P MartinR J Grant
Jan 8, 2020·Animals : an Open Access Journal From MDPI·Verónica M MerinoRubén G Pulido
Feb 29, 2020·Grass and Forage Science : the Journal of the British Grassland Society·J Michael WilkinsonA Thomas Chamberlain
Nov 17, 2020·Frontiers in Veterinary Science·Hannah DavisGillian Butler

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