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Maternal supply of methionine during late-pregnancy enhances rate of Holstein calf development in utero and postnatal growth to a greater extent than colostrum source

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Journal of Animal Science and Biotechnology 2019年第1期10卷 103-114页

作者： Abdulrahman S.Alharthi Fernanda Batistel Mohamed K.Abdelmegeid Gustavo Lascano Claudia Parys ariane helmbrecht Erminio Trevisi Juan J.Loor Mammalian NutriPhysioGenomics Department of Animal Sciences and Division of Nutritional SciencesUniversity of Illinois Department of Animal Dairy and Veterinary SciencesUtah State University Department of Animal Medicine Faculty of Veterinary MedicineKafrelsheikh University Department of Animal and Veterinary Science Clemson University Evonik Nutrition & Care GmbH Department of Animal Sciences Food and Nutrition Faculty of AgricultureFood and Environmental ScienceUniversità Cattolica del Sacro Cuore

Background: Pregnancy and early life are critical periods of plasticity during which the fetus and neonate may be influenced by environmental factors such as *** methionine(Met) supply in non-ruminants during pregnancy can affect offspring development and ***,the objective of this study was to investigate if increasing Met supply during late-pregnancy affects developmental parameters of the calf at birth and if either maternal Met or colostrum from Met-fed cows alters calf *** born to Holstein cows individually-fed a basal control [CON; 1.47 Mcal/kg dry matter(DM) and 15.3% crude protein] diet with no added Met or CON plus ethylcellulose rumen-protected Met(MET; Mepron? at 0.09% of diet DM; Evonik Nutrition & Care GmbH,Germany)during the last 28 ± 2 d of pregnancy were used.A total of 39 calves were in CON(n = 22 bulls,17 heifers) and 42 in MET(n = 20 bulls,22 heifers).At birth,calves were randomly allocated considering dam treatment and colostrum as fol ows: 1) calves from CON cows and colostrum from CON cows(n = 21); 2) calves from CON cows and colostrum from MET cows(n = 18); 3) calves from MET cows and colostrum from MET cows(n = 22); and 4) calves from MET cows and colostrum from CON cows(n = 20).Al calves were housed,managed,and fed individual y during the first 9 wk of ***: Despite greater daily DM intake pre-partum in cows fed MET(15.7 vs.14.4 ± 0.12 kg/d,P < 0.05),colostrum quality and quantity were not affected by maternal *** birth,MET calves had greater(P ≤ 0.05) body weight(BW,44.1 vs.42.1 ± 0.70 kg),hip height(HH,81.3 vs.79.6 ± 0.53 cm) and wither height(WH,77.8 vs.75.9 ± 0.47 cm).In contrast,concentrations of His,Lys,and Asn in plasma were lower(P ≤ 0.05) in MET *** of colostrum source,the greater BW,HH,and WH in MET calves at birth persisted through 9 wk of age resulting in average responses of + 3.1 kg BW,+ 1.9 cm HH,and + 1.8 cm WH compared with *** daily gain during the 9 wk was(P

关键词： Epigenetics Metabolism Methyl donors Nutritional programming

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鸭肉生产中缺乏氨基酸营养的知识

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国外畜牧学（猪与禽） 2015年第2期35卷 50-52页

作者：王晶晶马晓迪 ariane helmbrecht Evonik公司

世界鸭肉生产仍处于增长之中,由此突显了对可以高效进行鸭肉生产的营养需求知识的需要。肉鸡的营养研究数据不能用来配制鸭的日粮,Evonik公司的ariane helmbrecht在巴西萨尔瓦多市举行的世界家禽大会(World Poultry Congress)上谈到了... 详细信息

世界鸭肉生产仍处于增长之中,由此突显了对可以高效进行鸭肉生产的营养需求知识的需要。肉鸡的营养研究数据不能用来配制鸭的日粮,Evonik公司的ariane helmbrecht在巴西萨尔瓦多市举行的世界家禽大会(World Poultry Congress)上谈到了上述问题。她在回顾当前鸭氨基酸营养需求知识后指出这方面的信息缺乏。正如各类家禽品种的肉类生产一样,世界鸭肉的需求和生产仍在增加。2009年,全球生产了380万t鸭肉,比2000年大约多出100万t。鸭肉的核心市场仍在亚洲,

关键词：氨基酸营养家禽品种肉类生产全球生产营养研究营养需要育雏期胸肌率肥育期饲料成分

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商品蛋氨酸在家禽上的应用

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饲料与畜牧（新饲料） 2013年第11期 55-59页

作者： Andreas Lemme ariane helmbrecht Stefan Mack 董延高俊张英慧 Evonik Industries AG

文章从各方面探讨了蛋氨酸源相对生物学效价的测定,包括方法学的验证、蛋氨酸源之间差异的解释以及根据实际情况对建议的生物利用率提出的质疑。多个等剂量反应试验,包括蛋氨酸含量为65%的稀释DL-蛋氨酸(DL-met)处理,证实了多元指数和... 详细信息

文章从各方面探讨了蛋氨酸源相对生物学效价的测定,包括方法学的验证、蛋氨酸源之间差异的解释以及根据实际情况对建议的生物利用率提出的质疑。多个等剂量反应试验,包括蛋氨酸含量为65%的稀释DL-蛋氨酸(DL-met)处理,证实了多元指数和多元线性回归是测定不同养分来源生物学效价的恰当方法。根据1995年以来开展的19个剂量反应试验,液体蛋氨酸羟基类似物自由酸(MHA-FA)与DL-met相比,在肉鸡上的平均相对效价为64%(增重)、62%(饲料转化率)和58%(胸肌产量),相当于大约62%的加权平均。以100∶65的比例将液体MHA-FA用DL-met取代的大量现场试验表明,不管在肉鸡还是火鸡、产蛋鸡和鸭上,生产性能都没有差异。在实际饲料配方中,我们建议对液体MHA-FA在所有物种上的生物利用率都以65%来计算。引用试验中,DL-met和液体MHA-FA之间生物利用率上的大幅差异可以通过最近的研究来解释:液体MHA-FA中二聚体和低聚物的吸收效率特别低。在穿过消化道的过程中,液体MHA-FA的吸收比DL-met更加缓慢,因此更易受小肠中微生物的降解,导致部分没有吸收。同时因为液体MHA-FA本身不是一种生化意义上的氨基酸,因此必须在代谢过程中被主动转化成L-蛋氨酸,而代谢过程的效率是没有100%的。

关键词：蛋氨酸生物学效价家禽应用

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