Prediction of total digestible nutrient and crude protein requirements according to daily weight gain, and behavioral measurements of Hanwoo heifers
| العنوان: | Prediction of total digestible nutrient and crude protein requirements according to daily weight gain, and behavioral measurements of Hanwoo heifers |
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| المؤلفون: | Ju Ri Kim, Jun Sik Woo, Youl Chang Baek, Sun Sik Jang, Keun Kyu Park |
| المصدر: | Animal Bioscience. 36:601-608 |
| بيانات النشر: | Asian Australasian Association of Animal Production Societies, 2023. |
| سنة النشر: | 2023 |
| مصطلحات موضوعية: | General Veterinary, Physiology, Genetics, Animal Science and Zoology, Food Science |
| الوصف: | Objective: This study was conducted to investigate the effects of energy and protein levels in the diet of Hanwoo heifers on growth response and animal behavior.Methods: Forty heifers were randomly allocated into three experimental groups according to the target daily weight gain in 8 pens (T-0.2, 2 replications; T-0.4 and -0.6, 3 replications) based on similar body weight (BW) and age in months. The target average daily gain (ADG) was set at 0.2 (T-0.2), 0.4 (T-0.4), and 0.6 kg/d (T-0.6), and feed was based on National Institute of Animal Science (NIAS, 2017). In order to minimize hunger stress of T-0.2 and -0.4, the feeding ratio of rice straw was set to 55%, 50%, and 45% for T-0.2, -0.4 and T-0.6, respectively, so that the dry matter (DM) intake for all treatment groups was uniform but the energy and protein levels in the diet were adjusted differently. A total of 6 items (lying, standing, eating, rumination, walking and drinking) of animal behavior were analyzed.Results: During the whole period of the experiment, the ADG of the T-0.2, -0.4 and -0.6 treatments were 0.48, 0.56, and 0.65 kg/d (p |
| تدمد: | 2765-0235 2765-0189 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::5e548acb4acc338641073f8cf4875f19Test https://doi.org/10.5713/ab.22.0387Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi...........5e548acb4acc338641073f8cf4875f19 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 27650235 27650189 |
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