Nutritional value and in situ degradability of oak wood roughage and its feeding effects on growth performance and behavior of Hanwoo steers during the early fattening period
| العنوان: | Nutritional value and in situ degradability of oak wood roughage and its feeding effects on growth performance and behavior of Hanwoo steers during the early fattening period |
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| المؤلفون: | Ye Ri Ju, Youl Chang Baek, Yong Sik Kim, Sung Suk Lee, Young Kyoon Oh, Keun Kyu Park, Sun Sik Jang |
| المصدر: | Asian-Australasian Journal of Animal Sciences Asian-Australasian Journal of Animal Sciences, Vol 33, Iss 6, Pp 930-940 (2020) |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | education, lcsh:Animal biochemistry, Forage, Total mixed ration, Biology, Feed conversion ratio, Article, Ruminant Nutrition and Forage Utilization, 03 medical and health sciences, Animal science, Oak Roughage, Rumen Degradability, Tannin, Animal behavior, Dry matter, lcsh:QP501-801, 030304 developmental biology, lcsh:SF1-1100, chemistry.chemical_classification, 0303 health sciences, Animal Performance, Animal Behavior, 0402 animal and dairy science, food and beverages, 04 agricultural and veterinary sciences, Rice straw, 040201 dairy & animal science, chemistry, Hanwoo, Animal Science and Zoology, lcsh:Animal culture, Steam Digestion, Food Science |
| الوصف: | Objective: This study was conducted to evaluate changes in nutritional value and in situ dry matter (DM) degradability of oak and pine wood before and after steam-digestion process (60 min/160°C/6 atm) and feeding effect of the oak roughage on performance and behavior of Hanwoo steers.Methods: Chemical composition and tannin concentration were analyzed for oak and pine trees before and after the pretreatment. In situ DM and effective degradability of these samples were assessed using a nylon bag method. In vivo trial was performed to estimate animal performance and behavior, using steers fed total mixed ration (TMR) diets containing 0% (control), 25% (OR-25), and 50% (OR-50) of the oak roughage. Eighteen steers were allocated into nine pens (2 steers/pen, 3 pens/treatment) for 52 days according to body weight (BW) and age.Results: By the steam-digestion treatment, the neutral detergent-insoluble fiber was decreased from 86.5% to 71.5% for oak and from 92.4% to 80.5% for pine, thereby increasing non-fiber carbohydrate. In situ DM degradability of treated oak reached 38% at 72 h, whereas that of untreated oak was only 11.9%. The 0 h degradability of the treated pine increased from 5.9% to 12.1%, but the degradability was unchanged thereafter. Animal performance including BW, average daily gain, DM intake, and feed conversion ratio was not different among control and oak treatments. No differences were detected in animal behavior such as lying, standing, rumination, drinking, and eating, except walking. Walking was higher in control than oak treatments with numerically higher eating and lower lying times, probably due to bulkier characteristics of rice straw in the diet.Conclusion: This study demonstrates that the oak roughage can be substituted for 50% of total forage or 100% of rice straw in TMR diets at early fattening stage of Hanwoo steers. |
| تدمد: | 1011-2367 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b0585e59e52ea3a2e7efd80646f5f909Test https://pubmed.ncbi.nlm.nih.gov/32054172Test |
| حقوق: | OPEN |
| رقم الانضمام: | edsair.doi.dedup.....b0585e59e52ea3a2e7efd80646f5f909 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 10112367 |
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