دورية أكاديمية
The effect of feeding maize silage 1 h or 9 h before the herbage meal on dry matter intake, milk production, nitrogen partitioning and rumen function of lactating dairy cows
| العنوان: | The effect of feeding maize silage 1 h or 9 h before the herbage meal on dry matter intake, milk production, nitrogen partitioning and rumen function of lactating dairy cows |
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| المؤلفون: | Al-Marashdeh, Omar, Gregorini, Pablo, Greenwood, SL, Edwards, G |
| بيانات النشر: | CSIRO Publishing |
| سنة النشر: | 2016 |
| المجموعة: | Lincoln University (New Zealand): Lincoln U Research Archive |
| مصطلحات موضوعية: | herbage intake, maize silage, nitrogen partitioning, timing of supplementation, ANZSRC::30 Agricultural, veterinary and food sciences, ANZSRC::31 Biological sciences, ANZSRC::41 Environmental sciences |
| الوصف: | The study was conducted to evaluate the effect of the timing of feeding maize silage before a short herbage meal on dry matter (DM) intake, milk production, nitrogen (N) partitioning and rumen function of lactating dairy cows. Ten lactating, pregnant, Friesian × Jersey rumen-fistulated dairy cows aged 4-5 years were blocked in pairs by milksolids (MS; sum of protein and fat) production (1.73 ± 0.097 kg MS/cow.day; mean ± s.d.), bodyweight (519 ± 24.7 kg), days in milk (163 ± 12.5), and body condition score (3.9 ± 0.21). Cows within pairs were randomly allocated to one of two treatments: (1) five cows were offered one-third of their estimated total DM intake (5 kg/cow.day) as maize silage after the afternoon milking at 1500 hours, ∼1 h before herbage was provided (1BH); (2) five cows were offered one-third of their estimated total DM intake as maize silage after morning milking at 0700 hours, ∼9 h before herbage was provided (9BH). All cows were offered two-thirds of their total estimated DM intake (11 kg/cow.day) over a period of 4 h from 1600 hours to 2000 hours as freshly cut perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens) in an indoor system. Cows were adapted to diets for 9 days (Days 1-9), followed by 5 days of measurement (Days 10-14). Maize silage DM intake did not differ between treatments averaging 5.1 kg DM/cow.day. Herbage DM intake was greater (P ≤ 0.02) for 9BH (11.2 kg DM/cow.day) than 1BH (10.4 kg DM/cow.day). Milk yield (P ≤ 0.001) and MS production (P ≤ 0.08) were greater for 9BH than 1BH (18.8 vs 15.4 kg/cow.day and 1.63 vs 1.48 kg MS/cow.day, respectively). There was no effect of time of supplementation on N partitioned to milk, faeces, or urine. The purine derivatives to creatinine ratio, as an indication of microbial protein production, was greater (P ≤ 0.04) for 9BH than 1BH. Daily mean rumen pH and the concentration of total rumen volatile fatty acids, acetate, butyrate, and ammonia N were not affected by treatment. However, the peak concentration of ruminal ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | pp.2004-2013 |
| اللغة: | English |
| تدمد: | 1836-5787 1836-0939 |
| العلاقة: | The original publication is available from CSIRO Publishing - https://doi.org/10.1071/AN14790Test - http://dx.doi.org/10.1071/an14790Test; Animal Production Science; https://doi.org/10.1071/AN14790Test; https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000387538800004&DestLinkType=FullRecord&DestApp=WOS_CPLTest; Al-Marashdeh, O., Gregorini, P., Greenwood, S.L., & Edwards, G. (2016). The effect of feeding maize silage 1 h or 9 h before the herbage meal on dry matter intake, milk production, nitrogen partitioning and rumen function of lactating dairy cows. Animal Production Science, 56(12), 2004-2013. doi:10.1071/AN14790; EB7BA (isidoc); https://hdl.handle.net/10182/8649Test |
| DOI: | 10.1071/AN14790 |
| الإتاحة: | https://doi.org/10.1071/AN14790Test https://hdl.handle.net/10182/8649Test https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=elements_prod&SrcAuth=WosAPI&KeyUT=WOS:000387538800004&DestLinkType=FullRecord&DestApp=WOS_CPLTest |
| حقوق: | © CSIRO 2016 |
| رقم الانضمام: | edsbas.D89B7951 |
| قاعدة البيانات: | BASE |
| تدمد: | 18365787 18360939 |
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| DOI: | 10.1071/AN14790 |