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Evaluation of Agolin<sup>®</sup>, an Essential Oil Blend, as a Feed Additive for High Producing Cows

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Open Journal of Animal Sciences 2021年第2期11卷 231-237页

作者： peter williams John Clark Kelly Bean Feedworks USA Cincinnati USA Dairy Margin Tracker Rosebush USA

There is a growing demand for feed additives that can not only reduce dairy enteric methane emissions but also increase milk production and feed efficiency. Just one product is currently commercially available which accomplishes both of these goals. The purpose of this study was to confirm the performance benefits of the product (Agolin?, Agolin SA, Biere, Switzerland) in high producing mid-lactation dairy cows under United States feeding conditions. Four matched pens of approximately 150 mid-lactation cows/pen and averaging over 50 kg of milk/cow/day were enrolled in a side-by-side study. All pens received a common total mixed diet ad libitum, and the essential oil blend was administered via a concentrated farm pack to provide 1 g/cow/day to cows in the 2 test pens. Milk weights were determined, and samples were collected for compositional analysis over the last 2 days of the pretrial (May 11 and 12, 2020) and end of the trial (July 18 and 19, 2020) periods. Dry matter intake was measured by pen daily for the last 10 days of each feeding period. Milk fat and milk protein yields were greater (P 0.05) for cows receiving added Agolin. There was a tendency (P = 0.06) for energy corrected milk/dry matter intake to be greater for cows receiving the Agolin (1.88) relative to the control diet (1.76). The trial showed that Agolin assisted in improving production parameters of economic importance to dairy producers.

关键词： Lactating Dairy Cows Methane Essential Oils Feed Efficiency

Agolin Ruminant^®, an Essential Oil Blend, Increases Energy-Corrected Milk and Feed Efficiency in a High Component Dairy Herd

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Open Journal of Animal Sciences 2023年第3期13卷 272-282页

作者： Jorge Noricumbo-Saenz peter williams Hector Garcia Feedworks USA Ltd. Cincinnati OH USA Moxee Dairy Moxee WA USA

Agolin® Ruminant (Agolin) is a blend of essential oils developed to improve feed efficiency while at the same time reducing rumen enteric methane production. Studies have shown that the product improves lactational performance, but the range of results has been varied. This experiment evaluated the effects of the feed additive Agolinon milk production in a high-component (fat and protein) dairy herd when provided for an extended time. The experiment was conducted at a large commercial dairy in the Pacific Northwest, USA. Eight pens of cows (350 to 500 cows/pen) were blocked by production, and pens within blocks were randomly assigned to treatment. All pens received a common total mixed ration. Treatment consisted of providing 1 g/cow/day of Agolin to the test group. A 4-week adaptation period was followed by an 11-week study period. Milk production and milk composition were determined by cow by averaging daily performance for the one-week period before the start of the trial (covariate period) and the last week of each of the two test periods. Feed intakes were determined by pen at the same time. Milk yield was 1.11 kg/cow/day greater (P < 0.001) at the midpoint and 1.48 kg/cow/day greater (P < 0.001) at the end of the test period for cows receiving the feed additive. Similarly, protein yields were 0.03 (P < 0.001) and 0.07 kg/cow/day greater (P < 0.001) at the midpoint and end of the feeding period. Milk fat yield was not different (P = 0.854) between treatment groups at the midpoint of the trial but increased with treatment (P = 0.002) by the end of the trial. Energy-corrected milk/feed ratio, based on pen parameters, was significantly altered by treatment at the final test period (1.48 vs. 1.64 kg/kg for control and test treatments, respectively).

关键词： Greenhouse Gas Mitigation Methane Feed Efficiency Lactating Dairy Cows Agolin

Dissolved organic matter tracers reveal contrasting characteristics across high arsenic aquifers in Cambodia:A fluorescence spectroscopy study

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Geoscience Frontiers 2019年第5期10卷 1653-1667页

作者： Laura A. Richards Dan J. Lapworth Daniel Magnone Daren C. Gooddy Lee Chambers peter J. williams Bart E. van Dongen David A. Polya School of Earth and Environmental Sciences and williamson Research Centre for Molecular Environmental Science The University of ManchesterWilliamson BuildingOxford RoadManchesterM13 9PLUK British Geological Survey Maclean BuildingWallingfordOxfordshireOX10 8BBUK Lancaster Environment Centre Lancaster UniversityLancaster LA1 4YQUK Present address: School of Geography University of LincolnBrayford PoolLincolnLincolnshireLN6 7 TSUK Present address: Department of Civil and Environmental Engineering University of StrathclydeGlasgow G1 1XJUK

Organic matter in the environment is involved in many biogeochemical processes,including the mobilization of geogenic trace elements,such as arsenic,into *** this paper we present the use of fluorescence spectroscopy to characterize the dissolved organic matter (DOM) pool in heavily arsenicaffected groundwaters in Kandal Province,*** fluorescence DOM (fDOM) characteristics between contrasting field areas of differing dominant lithologies were compared and linked to other hydrogeochemical parameters,including arsenic and dissolved methane as well as selected sedimentary ***-corrected fluorescence indices were used to characterize depth profiles and compare field *** fDOM was generally dominated by terrestrial humic and fulvic-like components,with relatively small contributions from microbially-derived,tryptophan-like *** fDOM from sand-dominated sequences typically contained lower tryptophan-like,lower fulvic-like and lower humic-like components,was less bioavailable,and had higher humification index than clay-dominated *** concentrations were strongly correlated with fDOM bioavailability as well as with tryptophan-like components,suggesting that groundwater methane in these arsenic-prone aquifers is likely of biogenic origin.A comparison of fDOM tracers with sedimentary OM tracers is consistent with the hypothesis that external,surface-derived contributions to the aqueous DOM pool are an important control on groundwater hydrogeochemistry.

关键词： Arsenic Fluorescence spectroscopy Organic matter characterization Parallel factor analysis (PARAFAC) Groundwater quality

灵动的几何空间布莱克维尔科学亚洲公司写字楼装修项目

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室内设计与装修 2007年第1期 76-79页

作者：无 peter williams 澳大利亚williams Boag建筑设计事务所不详

布莱克维尔科学亚洲公司的写字楼装修是一个富有挑战性的项目,其主要任务是为这个总部设于墨尔本的跨国出版商设计一个有时代气息,充满活力的办公场所。布莱克维尔科学亚洲公司是个跨国性的出版公司,在墨尔本办事处有90多名员工。近10年... 详细信息

布莱克维尔科学亚洲公司的写字楼装修是一个富有挑战性的项目,其主要任务是为这个总部设于墨尔本的跨国出版商设计一个有时代气息,充满活力的办公场所。布莱克维尔科学亚洲公司是个跨国性的出版公司,在墨尔本办事处有90多名员工。近10年,公司成长迅速,规模扩大3倍,所以寻找新的（共4页)

关键词：几何空间写字楼项目亚洲科学装修办公场所内部空间

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采用非对称电阻的低压稳压器

计算机研究与发展 1977年第4期 52-54页

作者： peter williams 秦志斌

前一篇文章曾介绍过一种由可变低电压源供电的直流参考电压电路,它具有良好的稳定性。这是两个参考电压的闭环电路,参考电压之间彼此决定另一个支路的电流。曾经指出过,某些非对称电阻可以代替雪崩二极管(作为晶体管偏压元件而设计的)... 详细信息

前一篇文章曾介绍过一种由可变低电压源供电的直流参考电压电路,它具有良好的稳定性。这是两个参考电压的闭环电路,参考电压之间彼此决定另一个支路的电流。曾经指出过,某些非对称电阻可以代替雪崩二极管(作为晶体管偏压元件而设计的)。它的型号是Mullard E 2955/01,该型号器件流过的电流由100微安高到几个毫安时其压降大约为1伏。电压随电流的变化和正向偏压下的硅二极管的变化是同一数量级的,但是温度漂移较小。当把它用于这个电路里时,晶体管的射-基电压变化基本上补偿了非对称电阻的漂移,对于温度高到40℃的情况下,其电压仍能稳定在0.1％以内。同样,对于电源电压变化的稳定性是很好的。0.1％“短期”稳定性是容易得

关键词：电源电压稳压器稳压电源输出电压输出电阻参考电压负载电流非对称输出电流

澳大利亚营养标签法规及健康声称的管理现状(英文)

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澳大利亚营养标签法规及健康声称的管理现状(英文)

星际介质在星系形成数值模拟中的作用(英文)

全国公共卫生与食物营养高层论坛暨中国营养学会与保健食品分会第四届学术研讨会

作者： peter williams Assoc Prof FDAA National Centre of Excellence in Functional Foods University of Wollongong

FSANZ: A Bi-national authority Sets standards but enforcement by Australian States and NZ Maintains food compositions database Undertakes dietary modelling and risk assessments Makes legislative recommendations to Ministerial Council (including health, agriculture, consumer affairs) FOOD STANDARDS Australia New Zealand Te Mana Kounga Kai-Ahitereiria me Aotearoa

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科学技术与工程 2005年第24期5卷 1876-1880页

作者： peter R.williams Alistair H.Nelson 上海师范大学天体物理中心英国加迪夫市加迪夫大学物理与天文学系

通过对一百多个星系形成数值模拟和试验的分析,现在可以对引力的树结构算法和平滑粒子流体力学(Smoothed Particle Hydrodynamics,SPH)这两种数值模拟技术的准确性和可靠性做定量的估计。这些结果表明若给SPH方法中使用的平滑半径(h)固... 详细信息

通过对一百多个星系形成数值模拟和试验的分析,现在可以对引力的树结构算法和平滑粒子流体力学(Smoothed Particle Hydrodynamics,SPH)这两种数值模拟技术的准确性和可靠性做定量的估计。这些结果表明若给SPH方法中使用的平滑半径(h)固定一个下限值,可能会导致数值解的准确性严重下降。若随时调整h的值使得SPH方法计算粒子的邻近粒子数总和保持不变,则可以避免这种有害的影响,使准确性得到提高。结果还表明为了可以准确地模拟原星系的坍缩,小心地选取那些影响引力加速度准确性的参量尤其重要。

关键词： N体模拟星系星际介质形成结构演化