Cited by 494Ruminant Nutrition and Digestive PhysiologyAnimal health and immunologyAnimal Nutrition and Physiology

Invited review: Effects of milk ration on solid feed intake, weaning, and performance in dairy heifers

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Khan, M.A., Weary, D.M., von Keyserlingk, M.A.G.·2011·Journal of Dairy Science

Abstract

A feeding regimen that allows a smooth transition from milk to solid feed is vital for successful heifer-rearing programs. In the past, research efforts have focused on the development of feeding methods that allow early weaning, perhaps because the risk of disease is highest during the milk feeding stage. To encourage early intake of calf starter, conventional feeding programs have limited the supply of milk (often to 10% of BW at birth). However, dairy calves provided free access to milk will typically consume more than twice this amount. We critically review the available literature examining the relationship between milk feeding method, solid feed consumption, and rumen development in young dairy calves and identify areas where new work is required. We conclude that milk-fed dairy calves can safely ingest milk at approximately 20% of body weight (BW)/d, and greater milk consumption supports greater BW gain, improved feed efficiency, reduced incidence of disease, and greater opportunity to express natural behaviors, which in combination suggest improved welfare. Method of weaning greatly influences feed consumption, rumen development, and growth check in calves provided higher amounts of milk. Gradual weaning encourages starter intake during the preweaning period, and both weaning age and duration of weaning influence this consumption. Increased solid feed consumption during the weaning process contributes to rumen development, permitting higher starter intake and BW gain after weaning. Growth factors in milk may also enhance the growth and maturation of the gastrointestinal tract, but more research is required to understand the role of these factors. Greater nutrient supply through increased amount of milk appears to improve immune function and long-term performance of heifer calves; for example, reducing the age at first breeding and increasing first-lactation milk yield, but more research is needed to confirm these effects.

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  • Unweaned calves should receive approximately 20% of their body weight in milk or milk replacer per day to meet their metabolic needs.

    “should receive approximately 20% of their BW in milk or milk replacer (MR) per day to meet their metabolic needs (Khan et al., 2011).”

    From Effects of pre- and post-transport feeding protocols on the metabolism and physiological status of veal calves. (2025) · cites this paper as Khan et al., 2011

    The Control of Milk Intake section says calves offered milk ad libitum typically consume about 20% of body weight per day. It does not recommend that amount as necessary to meet metabolic needs. The Preweaning section instead gives a maintenance example of 2.6 kg of whole milk per day for a 45-kg calf and notes that milk replacers differ in energy content. (LLM, conf=0.88)

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Research works printed but not linked: 2

  1. Boussingault, J. B. 1845. Rural Economy. G. Law, transl. Orange Judd, New York, NY. 1079 INVITED REVIEW: FEEDING CALVES MORE MILK Journal of Dairy Science Vol. 94 No. 3, 2011
  2. Latham, N., and G. J. Mason. 2008. Maternal separation and the development of stereotypies: A review. Appl. Anim. Behav. Sci. 110:84-108.

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Authors
Khan, M. A., Weary, D. M., & von Keyserlingk, M. A. G.
Affiliations
University of British Columbia (CA)
Venue
Journal of Dairy Science
Published
2011-03
Volume
94
Issue
3
Pages
1071-1081
ISSN
0022-0302 (ISSN-L)
OpenAlex
W2068805760
Cited by
494
References
93
Citations by year
2026: 33 · 2025: 30 · 2024: 31 · 2023: 36 · 2022: 35 · 2021: 64 · 2020: 53 · 2019: 42 · 2018: 25 · 2017: 36 · 2016: 30 · 2015: 25 · 2014: 23 · 2013: 12 · 2012: 14
FWCI
3.54
Type
journal article
Language
en
Open access
Locations
  • Journal of Dairy Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
Canada's Natural Sciences and Engineering Research Council
Topics
  • Life Sciences › Agricultural and Biological Sciences › Agronomy and Crop Science › Ruminant Nutrition and Digestive Physiology
  • Health Sciences › Veterinary › Small Animals › Animal health and immunology
  • Life Sciences › Agricultural and Biological Sciences › Animal Science and Zoology › Animal Nutrition and Physiology
Keywords
dairy heifers, weaning, rumen development, calf growth, feed efficiency, calf welfare, immune function, age at first reproduction, first lactation milk yield
MeSH terms
Animals, Animal Feed, Cattle, Feeding Methods, Female, Milk, Rumen, Weaning

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