Early weaning of calves after different dietary regimens affects later rumen development, growth, and carcass traits in Hanwoo cattle

The main objective of this study was to determine the effect of different diets for early-weaned (EW) calves on rumen development, and how this affects fat deposition in the longissimus dorsi of adult Korean Hanwoo beef cattle. Three EW groups were established (each n = 12) in which two- week-old Ha...

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Bibliographic Details
Published in:Animal bioscience 2017, 30(10), , pp.1425-1434
Main Authors: Reddy, Kondreddy Eswar, Jeong, JinYoung, Baek, Youl-Chang, Oh, Young Kyun, Kim, Minseok, So, Kyung Min, Kim, Min Ji, Kim, Dong Woon, Park, Sung Kwon, Lee, Hyun-Jeong
Format: Article
Language:English
Subjects:
Calf
Cattle
Early Weaning
Health aspects
Rumen Development
Starch
Ultrasound
축산학
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Summary:The main objective of this study was to determine the effect of different diets for early-weaned (EW) calves on rumen development, and how this affects fat deposition in the longissimus dorsi of adult Korean Hanwoo beef cattle. Three EW groups were established (each n = 12) in which two- week-old Hanwoo calves were fed for ten weeks with milk replacer+concentrate (T1), milk replacer+concentrate+ roughage (T2), or milk replacer+concentrate+30% starch (T3); a control group (n = 12) was weaned as normal. At six months, 5 calves of each group were slaughtered and their organs were assessed and rumen papillae growth rates were measured. The remaining calves (n = 7 in each group) were raised to 20 months for further analysis. Twenty-month-old EW calves had a higher body weight (BW), backfat thickness (BF), longissimus dorsi muscle area (LMA) and intramuscular fat (IMF) than the control (p
ISSN:1011-2367
2765-0189
1976-5517
2765-0235
DOI:10.5713/ajas.17.0315