SelectedWorks - Anna K. Johnson

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Selected Works of Anna K. Johnson

Professor of Animal Science

Anna Johnson is a Professor in Animal Science, teaching, researching and an extension appointment in the area of farm animal behavior and welfare in both conventional and alternative production systems.

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About Anna K. Johnson

Anna Johnson is a Professor in Animal Science, teaching, researching and an extension appointment in the area of farm animal behavior and welfare in both conventional and alternative production systems.

Present	Professor, Iowa State University ‐ Department of Animal Science
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Animal Sciences

Farm animal behavior and welfare

AnS 537 Topics in Animal Behavior, welfare: Animal Behavior
AS 336 Domestic Animal Behavior and Well-Being

2356F Kildee Hall

806 Stange Rd

Ames, IA 50011-3150

Phone: 515-294-2098

Email:

Peer-Reviewed Articles (86)

Drinker to nursery pig ratio: Drinking behavior, aggression, and drinker ...

Journal of Swine Health and Production (2021)

Ciara J. Jackson, Anna K. Johnson, Kenneth J. Stalder, Roy A. Edler, et al.

Objective: Determine the effect of drinker number (1, 2, or 3 drinkers/pen) on the frequency and duration for drinker visits, ...

Effects of farrowing stall layout and number of heat lamps ...

Applied Animal Behaviour Science (2021)

Suzanne M. Leonard, Hongwei Xin, Tami M/ Brown-Brandl, Brett C. Ramirez, et al.

Farrowing stalls are used in the United States swine industry to reduce pre-weaning piglet mortality, enable efficient individual animal management, ...

Measuring birth weight and umbilical cord diameter at birth to ...

Translational Animal Science (2021)

Amanda L. Fordyce, Elizabeth A. Hines, Erika M. Edwards, Suppasit Plaengkaeo, et al.

In the swine industry, pre-weaning mortality, umbilical hernia incidence and pig market weight are a few contributing factors affecting profitability ...

A ramp in nursery housing affects nursery pig behavior and ...

Applied Animal Science (2020)

B. L. Novak, J. M. Young, D. J. Newman, A. K. Johnson, et al.

Objectives: The objective of this study was to determine the effects of exposure to a ramp during the nursery period ...

Comparison of heat lamps and heat mats in the farrowing ...

Journal of Swine Health and Production (2020)

Karli J. Lane, Anna K. Johnson, Carson E. J. Stilwill, Locke A. Karriker, et al.

Objectives: To determine the effect of heat lamps versus heat mats on piglet performance measures, sow lying behavior, piglet behavior, ...

More Nipple Cup Drinkers to Fewer Pigs on the Day ...

Journal of Animal Sciences and Livestock Production (2020)

Cassandra R. Stambuk, L. J. Sadler, P. R. DuBois, R. A. Edler, et al.

More nipple cup drinkers to fewer pigs on the day of weaning into a conventional nursery results in reduced aggression ...

Comparison of Heat Lamps and Heat Mats in the Farrowing ...

EC Veterinary Science (2020)

K. J. Lane, Anna K. Johnson, Jay D. Harmon, Locke A. Karriker, et al.

Objective: Pre-weaning mortality remains an industry concern. The study objectives were to 1) evaluate piglet performance and pre-weaning mortality when ...

Sow Lateral Toe Growth and Lesion Presence on Hooves When ...

Journal of Animal Sciences and Livestock Production (2020)

Anna K. Johnson, A. Garcia, Locke A. Karriker and Kenneth J. Stalder

Background: Horn quality is vital to reduce the risk of trauma or injury. The pig’s hooves are susceptible to lesions, ...

Characterization of the lying and rising sequence in lame and ...

Applied Animal Behaviour Science (2020)

Jared Michael Mumm, Julia Adriana Calderón Díaz, Joseph Daniel Stock, Anna Kerr Johnson, et al.

This study aimed to identify possible differences in the lying and standing sequence between lame and non-lame gestating sows. A ...

Alternative handling tools for moving grow-finish pig cadavers

Journal of Swine Health and Production (2020)

Ella E. Akin, Anna K. Johnson, Suzanne T. Millman, Cassandra D. Jass, et al.

The National Pork Board provides recommendations for humane handling tools and non-ambulatory pig handling methods. However, there are limited published ...

Development and Validation of Broiler Welfare Assessment Methods for Research ...

Journal of Applied Animal Welfare Science (2020)

Meaghan M. Meyer, Anna K. Johnson and Elizabeth A Bobeck

Required auditing of on-farm broiler welfare in the U.S. has increased; however, a lack of validated tools exists for assessment ...

A novel environmental enrichment device improved broiler performance without sacrificing ...

Poultry Science (2019)

Meaghan Meyer, Anna K. Johnson and Elizabeth A Bobeck

Modern commercial broilers have been genetically selected for fast growth and heavy breast muscling, contributing to a top-heavy phenotype and ...

The impact of an introductory animal handling course on undergraduate ...

Journal of Animal Science (2019)

J. M. Bundy, J. A. Sterle, A. K. Johnson and G. T. Krahn

A majority of animal science undergraduates have limited livestock handling experience when they come to college. To address this issue, ...

Dynamic space utilization for lame and non-lame gestating sows Estimated ...

Livestock Science (2019)

Jared M. Mumm, Julia Adriana Calderón Díaz, Joseph D. Stock, Anna K. Johnson, et al.

The objective of this study was to estimate the dynamic space utilization for lame and non-lame sows using their lying-standing ...

Development of Sow Lameness Classification Trees Using an Embedded Microcomputer-based ...

Journal of Animal Sciences and Livestock Production (2019)

Kenneth J. Stalder, B. M. McNeil, J. A. Calderon Diaz, Joseph D. Stock, et al.

Background and Objectives: The objectives of this study were: 1) to examine the relationship between forces applied by each leg ...

A novel environmental enrichment device increased physical activity and walking ...

Poultry Science (2019)

Meaghan M. Meyer, Anna K. Johnson and Elizabeth A Bobeck

Modern broilers are selected for fast growth and a large proportion of breast tissue, contributing to a top-heavy phenotype, leg ...

A proactive blueprint to demonstrate on-farm animal welfare

CAB Reviews (2019)

Anna K. Johnson, Jessica D. Colpoys, Arlene Garcia, Cassandra Jass, et al.

Farm animal welfare has become an increasing area of consumer and customer interest globally and this has resulted in dramatic ...

A review of aetiology and risk factors affecting sow mortality

CAB Reviews (2019)

China Supakorn, Grace Moeller, Joseph D. Stock, Anna K. Johnson, et al.

Sow mortality rates in the U.S. breeding herds have been increasing in recent years. Based on reports in the scientific ...

Modified wean-to-finish mat as an alternative handling tool for moving ...

Journal of Swine Health and Production (2019)

Ella E. Akin, Anna K. Johnson, Jason W. Ross, Suzanne T. Millman, et al.

Through the National Pork Board, the US pork industry provides recommendations for humane handling tools and acceptable non-ambulatory pig handling ...

Determining the Time Required to Detect Induced Sow Lameness Using ...

American Journal of Animal and Veterinary Sciences (2018)

Brady McNeil, Julia Calderón Díaz, Caitlyn Bruns, Joe Stock, et al.

Lameness in swine breeding herds is a common cause of compromised animal well-being and economic loss to pig producers. Current ...

Lameness: a principle problem to sow longevity in breeding herds

CAB Reviews (2018)

China Supakorn, Joseph D. Stock, Eduardo Garay, Anna K. Johnson, et al.

The objective of this article is to review causes of lameness lesions, lameness detection methods, factors affecting lameness, association between ...

Nursery pig behavior evaluation pre- and post injection using digital-image ...

Journal of Swine Health and Production (2018)

Shawna L. Weimer, Thomas J. Fangman, Locke A. Karriker, Kenneth J. Stalder, et al.

Objectives: To determine if nursery pigs display different behaviors and postures pre- and post injection during the human-approach paradigm using ...

Nutrient evaluation of a pork by-product and its use as ...

PloS ONE (2018)

Cayla J. Iske, Cheryl M. Morris, Jessica D. Colpoys, Kelly L. Kappen, et al.

North American zoological institutions typically feed ground raw meat diets to large exotic cats. These diets typically are nutritionally complete, ...

Review: Effects of Ractopamine Hydrochloride (Paylean) on welfare indicators for ...

Translational Animal Science (2017)

M. J. Ritter, A. K. Johnson, M. E. Benjamin, S. N. Carr, et al.

This review summarizes the effects of ractopamine hydrochloride (RAC) dose (5, 7.5, 10, and 20 mg/kg) on market weight pig ...

A Hypothesis and Review of the Relationship between Selection for ...

Frontiers in Genetics (2017)

Wendy M. Rauw, Anna K. Johnson, Luis Gomez-Raya and Jack C. M. Dekkers

Coping styles in response to stressors have been described both in humans and in other animal species. Because coping styles ...