By Thiago F. Fabris, Jimena Laporta, Amy L. Skibiel, Fabiana N. Corra, Bethany D. Senn, Stephanie E. Wohlgemuth, Geoffrey E. Dahl
This study from the University of Florida, Gainesville, found that cooling for the entire dry period increased milk yield up to 30 weeks into lactation. It showed that heat stress at any time during the dry period compromises performance of cows after calving.
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By J H McCaughern, A M Mackenzie, L A Sinclair
The results of a study in 60 Holstein-Friesian dairy cows highlight the need to take account of dietary effects on rumen pH when deciding on appropriate copper supplementation levels.
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By P Kazana, N Siachos, N Panousis, G Arsenos, G E Valergakis
A study from Aristotle University in Greece showed the ruminal pH of weaned calves is related to herd-level management of the pre-weaning period and weaning protocols.
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By Jörg R. Aschenbach, Qendrim Zebeli, Amlan K. Patra, Gabriele Greco, Salah Amasheh, Gregory B. Penner
The ruminal epithelium is the main site for absorption of key nutrients and electrolytes. Yet, the absorptive function has to be highly selective to prevent entry of microbes and toxins. This study outlines what researchers know, and still must uncover, about the factors that counteract barrier impairment and help with barrier restoration.
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By E H Cabezas-Garcia, A W Gordon, C P Ferris
An altered metabolic state is common in high-yielding dairy cows during early lactation. A study in the United Kingdom set out to determine if blood metabolites — such as beta-hydroxy butyrate (BHB), glucose and non-esterified fatty acids (NEFA) — could be correlated to energy status (EB).
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By R Roehe, M Martínez-Álvaro, M D Auffret, C-A Duthie, R D Stewart, M Watson, R J Dewhurst
The use of relative rumen microbial gene abundances to estimate meat fatty acids profiles has great potential as proxy traits for breeding.
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By Yanfen Cheng, Ying Wang, Yuanfei Li, Yipeng Zhang, Tianyi Liu, Yu Wang, Thomas J. Sharpton, Weiyun Zhu
This study evaluates the degradation pattern of rice straw by ruminal bacteria and identifies the bacteria that colonize rice straw during its digestion in the cow rumen.
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By Jun-hua Liu, Ting-ting Xu, Yu-jie Liu, Wei-yun Zhu, Sheng-yong Mao
This study in goats demonstrated a high-grain diet caused profound ruminal epithelial cellular damage and changes in tight junctions, which was associated with a local inflammatory response.
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By S.L. Gelsinger, W.K. Coblentz, G.I. Zanton, R.K. Ogden, M.S.Akins
Calves undergo a process of rumen development before, during and after weaning. Researchers are still seeking to understand the rumen microbiome development that happens. Click to read the whole study.
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By Marie Alvergnas, Tomasz Strabel, Katarzyna Rzewuska, Ewa Sell-Kubiak
Laminitis-related and infectious claw disorders often cause a decrease in milk yield. Claw disorders are also responsible for reproduction problems and can reduce feed intake. This study examines the most efficient measures to prevent those losses — and improve animal welfare.
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