H.L. Classen

7.4k total citations
174 papers, 5.9k citations indexed

About

H.L. Classen is a scholar working on Animal Science and Zoology, Plant Science and Small Animals. According to data from OpenAlex, H.L. Classen has authored 174 papers receiving a total of 5.9k indexed citations (citations by other indexed papers that have themselves been cited), including 141 papers in Animal Science and Zoology, 43 papers in Plant Science and 24 papers in Small Animals. Recurrent topics in H.L. Classen's work include Animal Nutrition and Physiology (138 papers), Livestock and Poultry Management (48 papers) and Rabbits: Nutrition, Reproduction, Health (22 papers). H.L. Classen is often cited by papers focused on Animal Nutrition and Physiology (138 papers), Livestock and Poultry Management (48 papers) and Rabbits: Nutrition, Reproduction, Health (22 papers). H.L. Classen collaborates with scholars based in Canada, United States and United Kingdom. H.L. Classen's co-authors include M.R. Bedford, Graham Campbell, Rex W. Newkirk, A. A. Olkowski, K. Schwean-Lardner, C. Riddell, D.D. Maenz, T.G. Crowe, B.I. Fancher and T. Scott and has published in prestigious journals such as PLoS ONE, Journal of Agricultural and Food Chemistry and Journal of Nutrition.

In The Last Decade

H.L. Classen

169 papers receiving 5.2k citations

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
H.L. Classen 4.7k 1.5k 772 673 567 174 5.9k
P.R. Ferket 4.6k 1.0× 1.1k 0.7× 449 0.6× 775 1.2× 794 1.4× 152 5.8k
C.M. Parsons 5.0k 1.1× 1.8k 1.3× 514 0.7× 1.4k 2.1× 810 1.4× 199 6.6k
W. L. Bryden 4.0k 0.9× 2.4k 1.7× 428 0.6× 1.2k 1.8× 760 1.3× 166 6.4k
T.J. Applegate 4.3k 0.9× 2.1k 1.4× 582 0.8× 805 1.2× 651 1.1× 171 6.4k
B. Svihus 4.1k 0.9× 1.2k 0.8× 335 0.4× 998 1.5× 808 1.4× 99 5.8k
J. Brake 4.0k 0.9× 1.1k 0.7× 458 0.6× 685 1.0× 224 0.4× 164 5.1k
S. Leeson 7.9k 1.7× 2.0k 1.4× 565 0.7× 2.0k 3.0× 1.2k 2.1× 340 9.8k
E. T. Kornegay 4.1k 0.9× 2.3k 1.6× 956 1.2× 882 1.3× 1.1k 2.0× 186 6.0k
E.T. Moran 3.4k 0.7× 850 0.6× 304 0.4× 766 1.1× 427 0.8× 202 4.1k
I. Zulkifli 4.5k 1.0× 896 0.6× 803 1.0× 346 0.5× 357 0.6× 243 5.8k

Countries citing papers authored by H.L. Classen

Since Specialization
Citations

This map shows the geographic impact of H.L. Classen'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 H.L. Classen with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H.L. Classen more than expected).

Fields of papers citing papers by H.L. Classen

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H.L. Classen. 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 H.L. Classen. The network helps show where H.L. Classen may publish in the future.

Co-authorship network of co-authors of H.L. Classen

This figure shows the co-authorship network connecting the top 25 collaborators of H.L. Classen. A scholar is included among the top collaborators of H.L. Classen 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 H.L. Classen. H.L. Classen is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Classen, H.L., et al.. (2022). The effect of infrared beak treatment on the welfare of turkeys reared to 12 weeks of age. Poultry Science. 101(4). 101728–101728. 2 indexed citations
3.
Abbott, Derek A., et al.. (2020). Development of a Coccidiosis Disease Challenge Model Using a Commercially Available Live Oocyst Vaccine. Avian Diseases. 65(1). 149–158. 5 indexed citations
4.
Classen, H.L., et al.. (2019). The impact of dark exposure on broiler feeding behavior and weight of gastrointestinal tract segments and contents. Poultry Science. 98(6). 2448–2458. 17 indexed citations
5.
Classen, H.L., et al.. (2019). The effects of stocking density on turkey tom performance and environment to 16 weeks of age. Poultry Science. 98(7). 2846–2857. 8 indexed citations
6.
Classen, H.L., et al.. (2019). The impact of beak tissue sloughing and beak shape variation on the behavior and welfare of infrared beak-treated layer pullets and hens. Poultry Science. 98(10). 4269–4281. 16 indexed citations
7.
Classen, H.L., et al.. (2018). Development of an in vitro protein digestibility assay mimicking the chicken digestive tract. Animal nutrition. 4(4). 401–409. 35 indexed citations
8.
Schwean-Lardner, K., B.I. Fancher, B. Laarveld, & H.L. Classen. (2013). Effect of day length on flock behavioural patterns and melatonin rhythms in broilers. British Poultry Science. 55(1). 21–30. 37 indexed citations
9.
Deep, Aman, et al.. (2013). Minimum light intensity threshold to prevent negative effects on broiler production and welfare. British Poultry Science. 54(6). 686–694. 43 indexed citations
10.
Schwean-Lardner, K., et al.. (2012). Effect of day length on cause of mortality, leg health, and ocular health in broilers. Poultry Science. 92(1). 1–11. 64 indexed citations
11.
Dahiya, J.P., et al.. (2009). Effect of Quantum phytase on nutrient digestibility and bone ash in White Leghorn laying hens fed corn-soybean meal-based diets. Poultry Science. 88(6). 1191–1198. 23 indexed citations
12.
Pourreza, J. & H.L. Classen. (2001). Effects of Supplemental Phytase and Xylanase on Phytate Phosphorus Degradation, Ileal Protein and Energy Digestibility of a Corn-soybean-wheat Bran Diets in Broiler Chicks.. Journal of Agricultural Science and Technology. 3(1). 19–25. 10 indexed citations
13.
Olkowski, A. A., et al.. (2001). Adverse Effects of Dietary Lupine in Broiler Chickens. Poultry Science. 80(5). 621–625. 33 indexed citations
14.
Olkowski, A. A., D.R. Korver, Bruce Rathgeber, & H.L. Classen. (1999). Cardiac index, oxygen delivery, and tissue oxygen extraction in slow and fast growing chickens, and in chickens with heart failure and ascites: A comparative study. Avian Pathology. 28(2). 137–146. 51 indexed citations
15.
Classen, H.L., et al.. (1995). The Effects of Continuously or Diurnally Fed Melatonin on Broiler Performance and Health. Poultry Science. 74(11). 1900–1904. 24 indexed citations
16.
17.
Bedford, M.R., H.L. Classen, & Graham Campbell. (1991). The Effect of Pelleting, Salt, and Pentosanase on the Viscosity of Intestinal Contents and the Performance of Broilers Fed Rye. Poultry Science. 70(7). 1571–1577. 186 indexed citations
18.
Classen, H.L., et al.. (1987). Morphological variation of skeletal characters in the bird family Carduelidae: I. General size and shape patterns in African canaries shown by principal component analyses. 38. 221–239. 10 indexed citations
19.
Classen, H.L. & T. Scott. (1980). Calcium self-selection during the rearing period of White Leghorn pullets.. Poultry Science. 59(7). 1593–1594. 1 indexed citations
20.
Classen, H.L., et al.. (1980). Feeding behavior of broiler chickens.. Poultry Science. 59(7). 2 indexed citations

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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