Works (32)

Updated: June 3rd, 2024 08:13

2024 article

Development of an interdisciplinary undergraduate and graduate course in precision livestock farming systems

Leonard, S. M. (2024, May 5). JOURNAL OF ANIMAL SCIENCE, Vol. 102.

By: S. Leonard n

author keywords: data science; engineering; technology
Sources: Web Of Science, NC State University Libraries
Added: May 20, 2024

2024 article

Water quality analysis and flow rate comparison between wean-finish swine barns

Kittle, O. C. S., Leonard, S. M., Knauer, M., & Almond, G. (2024, May 5). JOURNAL OF ANIMAL SCIENCE, Vol. 102, pp. 27–27.

By: O. Kittle n, S. Leonard n, M. Knauer n & G. Almond n

author keywords: drinkers; flow rate; water
Sources: Web Of Science, NC State University Libraries
Added: May 28, 2024

2023 article

Comparison of Ammonia Concentrations Between Flush and Pull-Plug Waste Management Systems in Wean-Finish Swine Barns.

Kittle, J., Leonard, S. M., Knauer, M., & Almond, G. (2023, May). JOURNAL OF ANIMAL SCIENCE, Vol. 101.

By: J. Kittle n, S. Leonard n, M. Knauer n & G. Almond n

author keywords: air quality; corrosion; facilities
Sources: Web Of Science, NC State University Libraries
Added: March 4, 2024

2023 article

Effect of Temperature and Humidity on Daily Feeding Behavior in Swine

Peppmeier, Z., Leonard, S. M., & Knauer, M. (2023, May). JOURNAL OF ANIMAL SCIENCE, Vol. 101.

By: Z. Peppmeier n, S. Leonard n & M. Knauer n

author keywords: growth; heat stress; pig
Sources: Web Of Science, NC State University Libraries
Added: March 4, 2024

2023 journal article

Estimating backfat depth, loin depth, and intramuscular fat percentage from ultrasound images in swine

ANIMAL, 17(10).

By: Z. Peppmeier n, J. Howard, M. Knauer n & S. Leonard n

author keywords: Carcass traits; Genetic selection; Growing-finishing swine; Meat quality; Pig
Sources: Web Of Science, NC State University Libraries, ORCID
Added: October 30, 2023

2023 article

Impact of Amount and Solubility of Dietary Fiber Fed During Late Gestation and During the Pre-Farrowing Period on Sow Serum Chemistry and Piglet Vitality Index

Martinez, G. E., Leonard, S., Heugten, E., Wilcock, P., & Rosero, D. S. (2023, October 28). JOURNAL OF ANIMAL SCIENCE, Vol. 101, pp. 313–314.

By: G. Martinez*, S. Leonard n, E. Heugten n, P. Wilcock* & D. Rosero

author keywords: glucose; farrowing; fiber; piglet vitality index
Sources: Web Of Science, NC State University Libraries
Added: December 18, 2023

2023 article

Sow Location Within Farrowing Room Impacts Reproduction During Heat Stress.

Knauer, M., Peppmeier, Z., & Leonard, S. M. (2023, May). JOURNAL OF ANIMAL SCIENCE, Vol. 101.

By: M. Knauer n, Z. Peppmeier n & S. Leonard n

author keywords: housing; reproduction; sow
Sources: Web Of Science, NC State University Libraries
Added: March 4, 2024

2022 journal article

Gruel Creep Feeding Accelerates Growth and Alters Intestinal Health of Young Pigs

ANIMALS, 12(18).

By: T. Boston n, F. Wang n, . Lin n, S. Leonard n, S. Kim n, D. McKilligan, V. Fellner n, J. Odle n

Contributors: T. Boston n, F. Wang n, . Lin n, S. Leonard n, S. Kim n, D. McKilligan, V. Fellner n, J. Odle n

author keywords: creep feeding; intestinal health; piglet growth; weaning
UN Sustainable Development Goal Categories
13. Climate Action (Web of Science)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: September 15, 2022

2022 review

Impact of housing environment and management on pre-/post-weaning piglet productivity

[Review of ]. JOURNAL OF ANIMAL SCIENCE, 100(6).

By: B. Ramirez*, M. Hayes*, I. Condotta* & S. Leonard n

author keywords: farrowing; nursery; physiology; swine; temperature; ventilation
MeSH headings : Animal Husbandry; Animals; Female; Floors and Floorcoverings; Housing, Animal; Lactation / physiology; Swine; Weaning
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 1, 2022

2021 conference paper

Automating ultrasound measurements of back fat and loin depth in swine

Presented at the National Swine Improvement Federation Annual Meeting, St. Louis, MO.

By: Z. Peppmeier, M. Knauer, J. Howard & S. Leonard

Event: National Swine Improvement Federation Annual Meeting at St. Louis, MO

Source: NC State University Libraries
Added: February 20, 2022

2021 magazine article

Effect of stall size, number of heat lamps during farrowing: Part 1

Leonard, S. M., & Ramirez, B. C. (2021, August). National Hog Farmer.

By: S. Leonard & B. Ramirez

Source: NC State University Libraries
Added: February 20, 2022

2021 magazine article

Effect of stall size, number of heat lamps during farrowing: Part 2

Leonard, S. M., & Ramirez, B. C. (2021, September). National Hog Farmer.

By: S. Leonard & B. Ramirez

Source: NC State University Libraries
Added: February 20, 2022

2021 magazine article

Effect of stall size, number of heat lamps during farrowing: Part 3

Leonard, S. M., & Ramirez, B. C. (2021, October). National Hog Farmer.

By: S. Leonard & B. Ramirez

Source: NC State University Libraries
Added: February 20, 2022

2021 journal article

Effects of farrowing stall layout and number of heat lamps on sow and piglet behavior

Applied Animal Behaviour Science, 239, 105334.

By: S. Leonard*, H. Xin*, T. Brown-Brandl*, B. Ramirez*, A. Johnson*, S. Dutta*, G. Rohrer*

author keywords: Creep; Drinking; Feeding; Location; Posture; Microclimate
Sources: ORCID, Crossref, NC State University Libraries
Added: February 3, 2022

2021 magazine article

Farrowing pen design is focus of precision farming study; Big data enables easier pig behaviour research

Anderson, F., & Leonard, S. (2021, June). Ontario Farmer.

By: F. Anderson & S. Leonard

Source: NC State University Libraries
Added: February 20, 2022

2021 journal article

Static and Dynamic Space Usage of Late-Gestation Sows

Transactions of the ASABE, 64(1), 151–159.

By: S. Leonard*, H. Xin, B. Ramirez, J. Stinn, S. Dutta, K. Liu, T. Brown-Brandl

author keywords: Animal welfare; Computer vision; Farrowing stall; Gestation stall; Kinect V2; Space allowance
Sources: Crossref, NC State University Libraries
Added: February 4, 2022

2021 article proceedings

Thermal Properties of Concrete Slats During Preheating of Empty Swine Facilities

Presented at the 2021 ASABE Annual International Virtual Meeting, July 12-16, 2021.

By: S. Leonard*, B. Ramirez & S. Weyer

Event: 2021 ASABE Annual International Virtual Meeting, July 12-16, 2021

Sources: Crossref, NC State University Libraries
Added: February 4, 2022

2021 conference paper

Understanding and predicting sow behavior at farrowing

Presented at the NC State Annual Summer Research and Creativity Symposium, (Virtual).

By: B. Fayne, R. Hodges & S. Leonard

Event: NC State Annual Summer Research and Creativity Symposium at (Virtual)

Source: NC State University Libraries
Added: February 20, 2022

2020 journal article

Effects of Farrowing Stall Layout and Number of Heat Lamps on Sow and Piglet Production Performance

Animals, 10(2), 348.

By: S. Leonard*, H. Xin*, T. Brown-Brandl*, B. Ramirez*, S. Dutta* & G. Rohrer*

author keywords: creep area; daily gain; farrowing design; housing; lactation; litter uniformity; over-lay; pre-weaning mortality; sow crate; stillborn; sow parity
TL;DR: Investigating production outcomes for three different farrowing stall layouts (traditional, expanded creep area, expanded sow area) and use of one or two heat lamps found that stall layout and number of heat lamps had no statistical impact on production outcomes, but seasonal differences, sow parity, andNumber of litter mates did have significant effects. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: February 3, 2022

2020 conference paper

Effects of piglet creep floor area on sow behavior and litter productivity in farrowing stalls

Presented at the American Society of Agricultural and Biological Engineers Annual International Meeting 2020, Omaha, NE.

By: S. Leonard, H. Xin, T. Brown-Brandl, B. Ramirez & S. Dutta

Event: American Society of Agricultural and Biological Engineers Annual International Meeting 2020 at Omaha, NE

Source: NC State University Libraries
Added: February 20, 2022

2020 conference paper

Initial phases for conducting high temperature and high humidity depopulation research

Presented at the American Association of Swine Veterinarians Annual Meeting, Anaheim, CA.

By: B. Ramirez, J. Brown, S. Leonard & S. Weyer

Event: American Association of Swine Veterinarians Annual Meeting at Anaheim, CA

Source: NC State University Libraries
Added: February 20, 2022

2019 journal article

Characterization of a machine vision system to assess gestating sow space usage

2019 ASABE Annual International Meeting. Presented at the 2019 American Society of Agricultural and Biological Engineers Annual International Meeting, Boston, Massachusetts.

By: S. Leonard*, H. Xin*, T. Brown-Brandl, B. Ramirez*, J. Stinn*, A. Johnson*, K. Liu

Contributors: S. Leonard*, H. Xin*, T. Brown-Brandl, B. Ramirez*, J. Stinn*, A. Johnson*, K. Liu

Event: 2019 American Society of Agricultural and Biological Engineers Annual International Meeting at Boston, Massachusetts on July 7-10, 2019

TL;DR: Length, width, and height of the space utilized by sows were calculated for static positions defined as standing and lateral lying, as well as dynamic sequencesdefined as standing up and lying down, which can be used to develop relationships between sow body weight and three dimensional static and dynamic space requirements. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: February 3, 2022

2019 journal article

Development and application of an image acquisition system for characterizing sow behaviors in farrowing stalls

Computers and Electronics in Agriculture, 163, 104866.

By: S. Leonard*, H. Xin*, T. Brown-Brandl* & B. Ramirez*

Contributors: S. Leonard*, H. Xin*, T. Brown-Brandl* & B. Ramirez*

author keywords: Animal well-being; Computer vision; Kinect (R); Precision livestock farming; Swine
TL;DR: A digital and time-of-flight depth imaging system is implemented to evaluate the effects of changing the farrowing environment on sow behavior and potentially well-being and a process with minimal user input is developed to analyze the collected images. (via Semantic Scholar)
Sources: ORCID, Crossref, NC State University Libraries
Added: February 3, 2022

2019 conference paper

Effects of one or two heat lamps on sow behavior and piglet performance in farrowing stalls

Presented at the 2019 Pig Welfare Symposium, Minneapolis, MN.

By: S. Leonard, H. Xin, T. Brown-Brandl, B. Ramirez & S. Dutta

Event: 2019 Pig Welfare Symposium at Minneapolis, MN

Source: NC State University Libraries
Added: February 20, 2022

2019 magazine article

Emerging technologies for monitoring sow health and welfare

Leonard, S. M., Smith, B. C., & Ramirez, B. C. (2019, August). National Hog Farmer.

By: S. Leonard, B. Smith & B. Ramirez

Source: NC State University Libraries
Added: February 20, 2022

2019 magazine article

If one heat lamp is good, is two better?

Hess, A., & Leonard, S. M. (2019, November). National Hog Farmer.

By: A. Hess & S. Leonard

Source: NC State University Libraries
Added: February 20, 2022

2019 conference paper

Implication of modern sow’s static and dynamic space usage on gestation stall design

Presented at the International Symposium on Animal Environment and Welfare, Chongquing, China.

By: S. Leonard, H. Xin, T. Brown-Brandl, B. Ramirez, J. Stinn & A. Johnson

Event: International Symposium on Animal Environment and Welfare at Chongquing, China

Source: NC State University Libraries
Added: February 20, 2022

2018 journal article

An Image Acquisition System for Studying Behaviors of Sows and Piglets in Farrowing Barns

10th International Livestock Environment Symposium (ILES X). Presented at the 10th International Livestock Environment Symposium (ILES X), Omaha, NE.

By: S. Leonard*, H. Xin, T. Brown-Brandl & B. Ramirez

Event: 10th International Livestock Environment Symposium (ILES X) at Omaha, NE

TL;DR: The system presented here utilizes a time of flight depth sensor and a digital camera to capture depth and digital images of each sow and litter, housed in individual farrowing stalls, to quantify behaviors of the sows and piglets as affected by dimensions and layout of thefarrowing stalls. (via Semantic Scholar)
Sources: Crossref, NC State University Libraries
Added: February 5, 2022

2018 conference paper

An image acquisition system for studying behaviors of sows and piglets in farrowing barns

10th International Livestock Environment Symposium, ILES 2018.

By: S. Leonard, H. Xin, T. Brown-Brandl & B. Ramirez

Contributors: S. Leonard, H. Xin, T. Brown-Brandl & B. Ramirez

Source: ORCID
Added: February 3, 2022

2018 article proceedings

Spatial and Diurnal Variations of Particulate Matter Concentration of a Pilot-Scale Aviary Layer House in Winter

Presented at the 10th International Livestock Environment Symposium (ILES X).

By: Y. Wang, D. Li, S. Leonard*, Z. Shi, H. Xin, L. Chai, B. Li

Event: 10th International Livestock Environment Symposium (ILES X)

Sources: Crossref, NC State University Libraries
Added: February 4, 2022

2018 conference paper

Spatial and diurnal variations of particulate matter concentration of a pilot-scale aviary layer house in winter

10th International Livestock Environment Symposium, ILES 2018.

By: Y. Wang, D. Li, S. Leonard, Z. Shi, H. Xin, L. Chai, B. Li

Contributors: Y. Wang, D. Li, S. Leonard, Z. Shi, H. Xin, L. Chai, B. Li

Source: ORCID
Added: February 3, 2022

2017 conference paper

Quantification of static and dynamic spaces for sows

Presented at the American Society of Agricultural and Biological Engineers Annual International Meeting 2017, Spokane, WA.

By: S. Leonard, H. Xin, T. Brown-Brandl, J. Stinn, A. Johnson & K. Liu

Event: American Society of Agricultural and Biological Engineers Annual International Meeting 2017 at Spokane, WA

Source: NC State University Libraries
Added: February 20, 2022

Employment

Updated: February 24th, 2021 12:50

2020 - present

North Carolina State University Raleigh, North Carolina, US
Assistant Professor Animal Science

Education

Updated: January 13th, 2020 11:20

2016 - 2020

Iowa State University Ames, Iowa, US
Agricultural and Biosystems Engineering, PhD

2012 - 2016

North Carolina State University Raleigh, North Carolina, US
Biological Engineering, BS

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