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    Effect of reducing daily herbage allowance during early lactation on composition and processing characteristics of milk from spring-calved herds


    Gulati, Arunima and Galvin, Norann and Kennedy, Emer and Lewis, Eva and McManus, Jennifer J and Fenelon, Mark and Guinee, Timothy P. (2019) Effect of reducing daily herbage allowance during early lactation on composition and processing characteristics of milk from spring-calved herds. International Dairy Journal, 92. pp. 69-76. ISSN 0958-6946

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    Abstract

    The study investigated the effects of reducing daily herbage allowance (DHA) from 15.0 to 11.8 kg dry matter per cow (>3.5 cm post grazing sward height) to a spring-calved herd during early lactation on the composition, rennet coagulability and heat stability characteristics of milk during early lactation (EL, 29e70 days in milk, DIM), mid lactation (ML, 78e183 DIM), and late lactation (LL, 205e267 DIM). Samples of milk were taken at approximate 10 d intervals during EL and at 1e3 week intervals during ML and LL. Reducing DHA led to reductions in milk yield, milk solids yield, and concentrations of protein (~0.22%, w/w) and casein (0.13%, w/w) during EL. Otherwise, it had little effect on milk composition or on the selected processing characteristics in ML, LL or overall lactation. Stage of lactation resulted in comparatively large changes in most compositional parameters, rennet gelation and heat stability

    Item Type: Article
    Additional Information: Please cite this article as: Gulati, A., Galvin, N., Kennedy, E., Lewis, E., McManus, J.J., Fenelon, M.A., Guinee, T.P., Effect of reducing daily herbage allowance during early lactation on composition and processing characteristics of milk from spring-calved herds, International Dairy Journal, https:// doi.org/10.1016/j.idairyj.2019.01.008. This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
    Keywords: daily herbage; allowance; early lactation; composition; processing; characteristics; milk; spring-calved herds;
    Academic Unit: Faculty of Science and Engineering > Chemistry
    Item ID: 13455
    Identification Number: https://doi.org/10.1016/j.idairyj.2019.01.008
    Depositing User: Jennifer McManus
    Date Deposited: 23 Oct 2020 16:21
    Journal or Publication Title: International Dairy Journal
    Publisher: Elsevier
    Refereed: Yes
    URI:

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