Effects of type of liquid feed and feeding frequency
on calf performance

The effects of liquid feed and feeding frequency on concentrate mixture intake, rumen fermentation and rearing performance were investigated in 24 bull calves divided into 2 groups, receiving milk or milk-replacer once or three times a day. VFA concentration was estimated in the rumen fluid at 36 and 90 days of age. The liquid feed did not influence the concentrate intake (P>0.05). The calves receiving milk were characterized by higher concentration of butyric acid in the rumen fluid (P≤0.02) and higher daily weight gains (P≤0.02) compared with those fed milkreplacer. The increasing feeding frequency during the period from 7 to 36 days of age was reflected in lower daily intake of concentrate mixture (P=0.02).

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Review: Exogenous butyrate: implications for the functional development of ruminal epithelium and calf performance
B. Niwińska, E. Hanczakowska, M. B. Arciszewski, R. Klebaniuk
animal

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1230-1388

Assigning DOI numbers, introducing articles from supplements and recent publications to POL-index database, maintaining anti-plagiarism detection, electronic system to proceed manuscripts and webpage of the Journal with interactive pdf files, and language correction of manuscripts published in Journal of Animal and Feed Sciences are financed in the years 2018–2019 by the Ministry of Science and Higher Education from the funds for science popularization activities, Agreement No. 631/P-DUN/2018.