Invited review: The effect of milk feeding practices on dairy calf behavior, health, and performance—A systematic review

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The aim of this systematic review was to summarize the literature assessing the effects of milk feeding practices on behavior, health, and performance on dairy calves. Peer-reviewed, published articles, written in English, directly comparing the effects of milk allowance, milk feeding methods, or milk feeding frequency on dairy calves were eligible for inclusion. Outcome measures could include sucking behavior, sucking on a teat (nutritive sucking, non-nutritive sucking on a teat), abnormal sucking behavior (non-nutritive sucking on pen fixtures, other oral behaviors, or cross-sucking), signs of hunger (vocalizations or unrewarded visits at the milk feeder), activity (lying time or locomotor play), feeding behavior (milk intake, starter intake, milk meal duration, or starter meal duration), growth (body weight or average daily gain), and health (occurrence of diarrhea, respiratory disease, or mortality). We conducted 2 targeted searches using Web of Science and PubMed to identify key literature. The resulting articles underwent a 2-step screening process. This process resulted in a final sample of 94 studies. The majority of studies investigated milk allowance (n = 69). Feeding higher milk allowances had a positive or desirable effect on growth, reduced signs of hunger, and increased locomotor play behavior during the preweaning period, whereas starter intake was reduced. Studies addressing health pointed to no effect of milk allowance, with no consistent evidence indicating that higher milk allowances result in diarrhea. Studies addressing milk feeding methods (n = 14) found that feeding milk by teat reduced cross-sucking and other abnormal oral behaviors. However, results on the effect of access to a dry teat were few and mixed. Milk feeding frequency (n = 14 studies) appeared to have little effect on feed intakes and growth; however, there is some evidence that calves with lower feeding frequency experience hunger. Overall, findings strongly suggest feeding higher volumes of milk using a teat; however, further work is needed to determine the optimal feeding frequency for dairy calves.

OriginalsprogEngelsk
TidsskriftJournal of Dairy Science
Vol/bind106
Udgave nummer9
Sider (fra-til)5853-5879
Antal sider27
ISSN0022-0302
DOI
StatusUdgivet - sep. 2023

Bibliografisk note

Funding Information:
This study was commissioned and funded by the Ministry for Food, Agriculture and Fisheries (Copenhagen, Denmark) as part of a contract between Aarhus University and the Ministry for the provision of research-based policy support at Aarhus University 2021–2024. We thank Heather Neave (Aarhus University, Denmark) for discussion on study design and interpretation of results. We also thank librarian Anne Mette Emdal Navntoft (Aarhus University) for assistance in the study design. No human or animal subjects were used, so this analysis did not require approval by an Institutional Animal Care and Use Committee or Institutional Review Board. The authors have not stated any conflicts of interest.

Publisher Copyright:
© 2023 American Dairy Science Association

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