Academic Journal
Effects of feeding urea-treated triticale and oat grain mixtures on ruminal fermentation, microbial population, and milk production performance of midlactation dairy cows
| العنوان: | Effects of feeding urea-treated triticale and oat grain mixtures on ruminal fermentation, microbial population, and milk production performance of midlactation dairy cows |
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| المؤلفون: | Libera, Kacper, Szumacher-Strabel, Malgorzata, Vazirigohar, Mina, Zieliński, Wiktor, Lukow, Rafal, Wysocka, Klaudia, Kołodziejski, Pawel, Lechniak, Dorota, Varadyova, Zora, Patra, Amlan Kumar, Cieslak, Adam |
| المصدر: | Annals of Animal Science ; volume 21, issue 3, page 1007-1025 ; ISSN 2300-8733 |
| بيانات النشر: | Walter de Gruyter GmbH |
| سنة النشر: | 2021 |
| الوصف: | The starch content of triticale and oat grains provides much of their readily available energy. Synchronizing energy and nitrogen in the rumen is important in optimizing profitability; for this reason, ammonia processing of these grains was evaluated for its potential to modify ruminal fermentation and to improve milk production performance. A mixture of ground triticale and oats (CONG, at a ratio of 60:40 on a dry matter basis) was treated with urea (5 kg/1000 kg) and urease additive (20 kg/1000 kg) containing 200 g/kg of moisture, for 2 wk (UREG). The urea treatment enhanced the pH and CP content of grains by 34% and 52%, respectively. In a batch culture study, CONG or UREG as the only substrate was incubated in a buffered ruminal fluid. Compared to CONG, UREG increased pH, total VFA concentration, total gas, and disappearance of DM, while reducing CH 4 production, whereas NH 3 concentration increased and entodiniomorph counts tended to increase. In the in vivo study, cows were randomly allocated to two dietary groups (n = 24) and were offered TMR based on maize and grass silage, containing either 155 g/kg of CONG and 80 g/ kg of soybean meal (CONT) or 155 g/kg of UREG and 59 g/kg of soybean meal (URET) for 31 d. Ruminal fluid was collected (n = 10) using rumenocentesis. The relative abundances of Streptococcus bovis decreased, but Megasphaera elsdenii , methanogens, and ammonia-producing bacteria increased by URET. Entodiniomorph and holotrich counts were decreased by URET. Feeding with URET increased ruminal pH and concentrations of total VFA, acetate, branched-chain VFA, and NH 3 . Feeding with URET also increased milk yield. These results demonstrate that replacing untreated triticale and oat grains with urea-treated grains can beneficially modulate ruminal microbiota and fermentation, consequently improving production performance and profitability. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | English |
| DOI: | 10.2478/aoas-2020-0108 |
| الاتاحة: | http://dx.doi.org/10.2478/aoas-2020-0108 https://content.sciendo.com/view/journals/aoas/ahead-of-print/article-10.2478-aoas-2020-0108/article-10.2478-aoas-2020-0108.xml https://www.sciendo.com/pdf/10.2478/aoas-2020-0108 |
| Rights: | http://creativecommons.org/licenses/by/4.0 |
| رقم الانضمام: | edsbas.9224226D |
| قاعدة البيانات: | BASE |
| DOI: | 10.2478/aoas-2020-0108 |
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