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Animal

The effects of feeding level of concentrate for growing phase on growth performance in the Holstein calves
Sung Il Kim1
,
Do Hyung Kim1
,
Ji Hong Lee1*
1Department of Animal Biotechnology, Gyeongkuk National University, Yecheon 36830, Korea
*Corresponding Author
1 June 2025. pp. 109-118
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Abstract

This study was conducted to investigate the effects of feeding level of concentrate for growing phase on growth performance in the Holstein calves. Thirty Holstein calves (average body weight: 89.5 ± 11.5 kg) were assigned to three groups by a randomized complete block design. From 10 days after arrival on the farm until 120 days of age, the calves were fed concentrate at 2.2% of their body weight. Additionally, the daily amount of concentrate was gradually increased at 15-day intervals to 200, 300, and 500 g for the T1, T2, and T3 groups, respectively. Total weight gain and average daily gain were significantly higher in the T3 group than in the other treatment groups (p < 0.05). Feed conversion rate was significantly lower in the T3 group (p < 0.05). The crude protein and total digestible nutrient (TDN) requirement was significantly lower in the T3 group compared to the other groups (p < 0.05). This study suggest that providing 500 g/day/head of concentrate, along with free-range access to forage, is effective in improving daily weight gain, feed conversion rate in Holstein calves.

Keywords
crude protein
feed conversion
growth performance
TDN
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Information
  • Publisher :Institute of Agricultural Science, Chungnam National University
  • Publisher(Ko) :충남대학교 농업과학연구소
  • Journal Title :Korean Journal of Agricultural Science
  • Journal Title(Ko) :농업과학연구
  • Volume : 52
  • No :2
  • Pages :109-118
  • Received Date : 2025-04-21
  • Revised Date : 2025-04-29
  • Accepted Date : 2025-04-29
  • DOI :https://doi.org/10.7744/kjoas.520204
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