A. Helmbrecht

789 total citations
33 papers, 632 citations indexed

About

A. Helmbrecht is a scholar working on Animal Science and Zoology, Molecular Biology and Plant Science. According to data from OpenAlex, A. Helmbrecht has authored 33 papers receiving a total of 632 indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Animal Science and Zoology, 7 papers in Molecular Biology and 7 papers in Plant Science. Recurrent topics in A. Helmbrecht's work include Animal Nutrition and Physiology (24 papers), Livestock and Poultry Management (7 papers) and Ruminant Nutrition and Digestive Physiology (4 papers). A. Helmbrecht is often cited by papers focused on Animal Nutrition and Physiology (24 papers), Livestock and Poultry Management (7 papers) and Ruminant Nutrition and Digestive Physiology (4 papers). A. Helmbrecht collaborates with scholars based in Germany, United States and China. A. Helmbrecht's co-authors include Juan J. Loor, M. Rodehutscord, O. Adeola, W. Siegert, S.A. Adedokun, B. Saremi, C. Parys, Ryan N. Dilger, Abdulrahman S. Alharthi and Zhen Zhou and has published in prestigious journals such as PLoS ONE, The FASEB Journal and Journal of Dairy Science.

In The Last Decade

A. Helmbrecht

31 papers receiving 617 citations

Peers

Countries citing papers authored by A. Helmbrecht

Since Specialization

Citations

This map shows the geographic impact of A. Helmbrecht's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by A. Helmbrecht with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites A. Helmbrecht more than expected).

Fields of papers citing papers by A. Helmbrecht

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by A. Helmbrecht. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by A. Helmbrecht. The network helps show where A. Helmbrecht may publish in the future.

Co-authorship network of co-authors of A. Helmbrecht

This figure shows the co-authorship network connecting the top 25 collaborators of A. Helmbrecht. A scholar is included among the top collaborators of A. Helmbrecht based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with A. Helmbrecht. A. Helmbrecht is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Endometrial DNA methylation signatures during the time of breeding in relation to the pregnancy outcome in postpartum dairy cows fed a control diet or supplemented with rumen-protected methionine 2024 ·Frontiers in Genetics ·Dessie Salilew‐Wondim, Ernst Tholen, (unknown), (unknown), (unknown), Marc Drillich, Michael Iwersen, (unknown), Samuel Gebremedhn, Dawit Tesfaye, C. Parys, A. Helmbrecht, Jessie Guyader, (unknown), Nares Trakooljul, Klaus Wimmers, Michael Hoelker	4
2	Supplementing rumen‐protected methionine to lactating multiparous dairy cows did not improve reproductive performance 2019 ·Reproduction in Domestic Animals ·(unknown), Michael Iwersen, (unknown), (unknown), (unknown), Stefanie Krieger, Harald Pothmann, Karen Wagener, Michael Hoelker, Dawit Tesfaye, K. Schellander, A. Helmbrecht, C. Parys, Marc Drillich	5
3	Supply of Methionine During Late-Pregnancy Alters Fecal Microbiota and Metabolome in Neonatal Dairy Calves Without Changes in Daily Feed Intake 2019 ·Frontiers in Microbiology ·Ahmed A. Elolimy, Abdulrahman S. Alharthi, Mohamed Zeineldin, C. Parys, A. Helmbrecht, Juan J. Loor	39
4	Hepatic phosphorylation status of serine/threonine kinase 1, mammalian target of rapamycin signaling proteins, and growth rate in Holstein heifer calves in response to maternal supply of methionine 2018 ·Journal of Dairy Science ·Tianle Xu, Abdulrahman S. Alharthi, Fernanda Batistel, A. Helmbrecht, C. Parys, Erminio Trevisi, Xiangzhen Shen, Juan J. Loor	12
5	Evaluation of the tryptophan requirement of small-framed first cycle laying hens 2018 ·Poultry Science ·Juan Wen, A. Helmbrecht, (unknown), (unknown), M.E. Persia	14
6	Increasing the availability of threonine, isoleucine, valine, and leucine relative to lysine while maintaining an ideal ratio of lysine:methionine alters mammary cellular metabolites, mammalian target of rapamycin signaling, and gene transcription 2018 ·Journal of Dairy Science ·Xianwen Dong, Zhen Zhou, L. Wang, B. Saremi, A. Helmbrecht, (unknown), Juan J. Loor	33
7	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 2018 ·Journal of Animal Science and Biotechnology ·Abdulrahman S. Alharthi, Fernanda Batistel, (unknown), G.J. Lascano, C. Parys, A. Helmbrecht, Erminio Trevisi, Juan J. Loor	39
8	Evaluation of the Valine requirement of small-framed first cycle laying hens 2018 ·Poultry Science ·Juan Wen, A. Helmbrecht, (unknown), (unknown), M.E. Persia	11
9	Feed Choice Led to Higher Protein Intake in Broiler Chickens Experimentally Infected With Campylobacter jejuni 2018 ·Frontiers in Nutrition ·Christian Visscher, (unknown), (unknown), Ralph Brehm, (unknown), A. Helmbrecht	4
10	Effect of different levels of tryptophan on productive performance, egg quality, blood biochemistry, and caecal microbiota of hens housed in enriched colony cages under commercial stocking density 2018 ·Poultry Science ·Farina Khattak, A. Helmbrecht	22
11	Digestible lysine requirements of male broilers from 1 to 42 days of age reassessed 2017 ·PLoS ONE ·Henrique S Cemin, S.L. Vieira, Catarina Stefanello, Marcos Kipper, Líris Kindlein, A. Helmbrecht	26
12	Examining the effect of dietary electrolyte balance, energy source, and length of feeding of nitrogen-free diets on ileal endogenous amino acid losses in broilers 2017 ·Poultry Science ·S.A. Adedokun, A.J. Pescatore, Michael J. Ford, J.P. Jacob, A. Helmbrecht	14
13	Varying the ratio of Lys:Met while maintaining the ratios of Thr:Phe, Lys:Thr, Lys:His, and Lys:Val alters mammary cellular metabolites, mammalian target of rapamycin signaling, and gene transcription 2017 ·Journal of Dairy Science ·Xianwen Dong, Zhen Zhou, B. Saremi, A. Helmbrecht, (unknown), Juan J. Loor	50
14	Interactive effects of dietary arginine and Eimeria acervulina infection on broiler growth performance and metabolism 2016 ·Poultry Science ·S.J. Rochell, A. Helmbrecht, C.M. Parsons, Ryan N. Dilger	19
15	Influence of dietary amino acid reductions and Eimeria acervulina infection on growth performance and intestinal cytokine responses of broilers fed low crude protein diets 2016 ·Poultry Science ·S.J. Rochell, A. Helmbrecht, C.M. Parsons, Ryan N. Dilger	32
16	Effect of glycine supplementation in low protein diets with amino acids from soy protein isolate or free amino acids on broiler growth and nitrogen utilisation 2016 ·British Poultry Science ·W. Siegert, Katharina Wild, Margit Schollenberger, A. Helmbrecht, M. Rodehutscord	27
17	A quantitative study of the interactive effects of glycine and serine with threonine and choline on growth performance in broilers 2015 ·Poultry Science ·W. Siegert, Hamed Ahmadi, A. Helmbrecht, M. Rodehutscord	41
18	Amino acid nutrition knowledge lacking in duck meat production. 2012 ·A. Helmbrecht	1
19	Standardized ileal amino acid digestibility (SIAAD) of wheat DDGS in male growing turkeys 2012 ·Archiv für Geflügelkunde ·(unknown), A. Helmbrecht, J. Jankowski, A. Lemme, (unknown), (unknown)	4
20	Standardized ileal digestibility of amino acids from high-protein feedstuffs for growing turkeys – a preliminary study 2011 ·Archiv für Geflügelkunde ·(unknown), A. Helmbrecht, A. Lemme, J. Jankowski, (unknown)	10

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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