J.A. Pennington

690 total citations
20 papers, 495 citations indexed

About

J.A. Pennington is a scholar working on Agronomy and Crop Science, Small Animals and Animal Science and Zoology. According to data from OpenAlex, J.A. Pennington has authored 20 papers receiving a total of 495 indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Agronomy and Crop Science, 5 papers in Small Animals and 4 papers in Animal Science and Zoology. Recurrent topics in J.A. Pennington's work include Reproductive Physiology in Livestock (14 papers), Ruminant Nutrition and Digestive Physiology (7 papers) and Effects of Environmental Stressors on Livestock (4 papers). J.A. Pennington is often cited by papers focused on Reproductive Physiology in Livestock (14 papers), Ruminant Nutrition and Digestive Physiology (7 papers) and Effects of Environmental Stressors on Livestock (4 papers). J.A. Pennington collaborates with scholars based in United States. J.A. Pennington's co-authors include J.L. Albright, C. J. Callahan, S.L. Spahr, J.R. Lodge, D. W. Kellogg, C.L. Davis, William F. Hoffman, E. B. Kegley, M. A. Diekman and L.H. Schultz and has published in prestigious journals such as Journal of Dairy Science, Agriculture Ecosystems & Environment and Journal of Animal Science.

In The Last Decade

J.A. Pennington

19 papers receiving 428 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
J.A. Pennington United States 12 389 223 173 167 41 20 495
Rómulo Campos Gaona Colombia 11 386 1.0× 220 1.0× 170 1.0× 93 0.6× 31 0.8× 66 569
R.M. Cleale United States 15 433 1.1× 244 1.1× 146 0.8× 92 0.6× 44 1.1× 35 564
J.B. Stone Canada 17 528 1.4× 296 1.3× 150 0.9× 133 0.8× 34 0.8× 36 657
L.F. Reutzel United States 6 220 0.6× 143 0.6× 122 0.7× 145 0.9× 21 0.5× 8 333
J. W. Rust United States 13 216 0.6× 145 0.7× 250 1.4× 123 0.7× 36 0.9× 38 513
J. R. Briegel Australia 16 287 0.7× 295 1.3× 188 1.1× 71 0.4× 35 0.9× 38 551
T. G. Nash United States 13 333 0.9× 240 1.1× 158 0.9× 50 0.3× 25 0.6× 31 495
Roger D. Shanks United States 11 242 0.6× 195 0.9× 129 0.7× 83 0.5× 22 0.5× 17 473
Dale A. Blasi United States 11 214 0.6× 77 0.3× 142 0.8× 141 0.8× 22 0.5× 77 428
M. Villaseñor United States 8 305 0.8× 180 0.8× 75 0.4× 64 0.4× 33 0.8× 9 429

Countries citing papers authored by J.A. Pennington

Since Specialization
Citations

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

Fields of papers citing papers by J.A. Pennington

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J.A. Pennington. 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 J.A. Pennington. The network helps show where J.A. Pennington may publish in the future.

Co-authorship network of co-authors of J.A. Pennington

This figure shows the co-authorship network connecting the top 25 collaborators of J.A. Pennington. A scholar is included among the top collaborators of J.A. Pennington 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 J.A. Pennington. J.A. Pennington 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
1.
2.
Popp, Michael P., Amanda J. Ashworth, P. Moore, et al.. (2021). Economic and GHG emissions changes of aeration and gypsum application. Agriculture Ecosystems & Environment. 321. 107616–107616. 4 indexed citations
3.
Ashworth, Amanda J., et al.. (2021). Pasture conservation management effects on soil surface infiltration in hay and grazed systems. Journal of Soil and Water Conservation. 77(1). 59–66. 5 indexed citations
4.
Kegley, E. B., et al.. (2005). Preference of Dairy Cows for Free-Stalls Bedded with Sand or Granite Fines and Changes in Bacterial Counts in Those Materials. The Professional Animal Scientist. 21(4). 248–253. 2 indexed citations
5.
Kegley, E. B., et al.. (2004). Growth Performance and Health of Dairy Calves Bedded with Different Types of Materials. Journal of Dairy Science. 87(11). 3736–3745. 77 indexed citations
6.
Kellogg, D. W., et al.. (2001). Survey of Management Practices Used for the Highest Producing DHI Herds in the United States. Journal of Dairy Science. 84. E120–E127. 34 indexed citations
7.
Pennington, J.A. & C. J. Callahan. (1986). Use of Mount Detectors Plus Chalk as an Estrous Detection Aid for Dairy Cattle. Journal of Dairy Science. 69(1). 248–252. 5 indexed citations
8.
Pennington, J.A., J.L. Albright, & C. J. Callahan. (1986). Relationships of Sexual Activities in Estrous Cows to Different Frequencies of Observation and Pedometer Measurements. Journal of Dairy Science. 69(11). 2925–2934. 52 indexed citations
9.
Albright, J.L., et al.. (1986). Influence of Feeding Time and Diet on Time of Parturition in Multiparous Ewes. Journal of Animal Science. 63(4). 1036–1040. 12 indexed citations
10.
Pennington, J.A., et al.. (1985). Effect of Preinsemination Injection of Gonadotropin-Releasing Hormone on Reproductive Performance of Dairy Cattle. The Bovine Practitioner. 14–16. 15 indexed citations
11.
Pennington, J.A., L.H. Schultz, & William F. Hoffman. (1985). Comparison of Pregnancy Diagnosis by Milk Progesterone on Day 21 and Day 24 Postbreeding: Field Study in Dairy Cattle. Journal of Dairy Science. 68(10). 2740–2745. 29 indexed citations
12.
Pennington, J.A., J.L. Albright, M. A. Diekman, & C. J. Callahan. (1985). Sexual Activity of Holstein Cows: Seasonal Effects. Journal of Dairy Science. 68(11). 3023–3030. 54 indexed citations
13.
Pennington, J.A. & P.V. Malven. (1985). Prolactin in Bovine Milk Near the Time of Calving and Its Relationship to Premature Induction of Lactogenesis. Journal of Dairy Science. 68(5). 1116–1122. 8 indexed citations
14.
Pennington, J.A. & J.L. Albright. (1985). Effect of Feeding Time, Behavior, and Environmental Factors on the Time of Calving in Dairy Cattle. Journal of Dairy Science. 68(10). 2746–2750. 11 indexed citations
15.
Lee, Chien‐Nan, et al.. (1983). Efficacy of gonadotropin-releasing hormone administered at the time of artificial insemination of heifers and postpartum and repeat breeder dairy cows. American Journal of Veterinary Research. 44(11). 2160–2163. 46 indexed citations
16.
Pennington, J.A., William F. Hoffman, L.H. Schultz, S.L. Spahr, & J.R. Lodge. (1982). Milk Progesterone for Pregnancy Diagnosis in Dairy Goats. Journal of Dairy Science. 65(10). 2011–2014. 11 indexed citations
17.
Pennington, J.A., S.L. Spahr, & J.R. Lodge. (1981). Influences on Progesterone Concentration in Bovine Milk. Journal of Dairy Science. 64(2). 259–266. 17 indexed citations
18.
Pennington, J.A., S.L. Spahr, & J.R. Lodge. (1976). Pregancy Diagnosis in Dairy Cattle by Progesterone Concentration in Milk. Journal of Dairy Science. 59(8). 1528–1531. 34 indexed citations
19.
Pennington, J.A., S.L. Spahr, & J.R. Lodge. (1976). Factors Affecting Progesterone in Milk for Pregnancy Diagnosis in Dairy Cattle. British Veterinary Journal. 132(5). 487–496. 31 indexed citations
20.
Pennington, J.A. & C.L. Davis. (1975). Effects of Intraruminal and Intra-Abomasal Additions of Cod-Liver Oil on Milk Fat Production in the Cow. Journal of Dairy Science. 58(1). 49–55. 48 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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