Dr. Rosero & Dr. R. Dean Boyd: Overcoming Summer Dip: Use of Soybean Meal to Maximize Carcass Weight | Ep. 131

Dr. Rosero & Dr. R. Dean Boyd: Overcoming Summer Dip: Use of Soybean Meal to Maximize Carcass Weight | Ep. 131

Author: Wisenetix August 8, 2024 Duration: 10:42

During summer months, pig producers often face a decline in carcass weight due to the adverse impact of heat stress on pigs and the replacement of soybean meal with intake-reducing ingredients. This situation presents a significant financial hurdle for producers, especially as it usually coincides with peak hog prices, thereby missing potential revenue opportunities.

The prohibitive cost of fats makes the frequently used high-energy density diets economically unfeasible. Leveraging on extensive research that highlights the critical role of soybean meal in enhancing the growth performance of pigs, we propose a summer nutrition program that uses high levels of soybean meal and excludes feed intake-reducing ingredients. Listen and watch! 


“The persistent inferior carcass weight decline during the summer months remains a critical issue in the industry. That decline in carcass weight and resulting financial losses during this period can be greatly minimized with the strategic use of higher levels of soybean meal in grow-finish diets.” - Dr. R. Dean Boyd


“It’s critically important to understand the implication of feed intake-reducing ingredients, like DDGs, when attempting to maximize carcass weight during the summer months. Formulating based on margin over feed cost versus least cost is a profit-enhancing concept for swine nutritionists to consider.” - Dr. David Rosero


  • (00:00) Introduction 
  • (00:31) Impact of summer heat on carcass weight
  • (01:21) Economic implications of carcass weight decline
  • (02:46) Soybean meal's role in minimizing weight loss
  • (05:30) Designing summer feeding programs
  • (08:00) Most important takeaway for nutritionists
  • (09:46) Closing thoughts


Meet the guests: Dr. David Rosero is an assistant professor of animal science at Iowa State University. His research program focuses on conducting applied research on swine nutrition and the practical application of smart farming. He previously served as the technical officer for The Hanor Company, overseeing nutrition, research, and innovation efforts.


Dr. R. Dean Boyd with Nutrition Research, LLC, is the former technical director and nutrition leader for the Hanor Company and its Triumph Foods group (2002–2020). His team managed the nutrition program for 85,000 sows and 2.35 MIL pigs. He is an adjunct professor at North Carolina State and Iowa State Universities in animal nutrition. 


This episode of the Swine Nutrition Blackbelt Podcast is Sponsored by:

- US Soy


𝗟𝗶𝘀𝘁𝗲𝗻 𝗼𝗻 𝗔𝗽𝗽𝗹𝗲 𝗣𝗼𝗱𝗰𝗮𝘀𝘁𝘀, 𝗦𝗽𝗼𝘁𝗶𝗳𝘆 𝗼𝗿 𝗮𝗻𝘆 𝗺𝗮𝗷𝗼𝗿 𝗽𝗹𝗮𝘁𝗳𝗼𝗿𝗺.


Instagram: Swine Campus

LinkedIn: Swine Campus

Website: swinenutritionblackbelt.com


For swine nutritionists, the sheer volume of information can be overwhelming, and finding truly actionable insights is a constant challenge. The Swine Nutrition Blackbelt Podcast, presented by Wisenetix, cuts through the noise by delivering concentrated wisdom from leading global experts. Each episode is designed to fit into a busy schedule, offering a focused, nine-minute dive into a specific topic that's actually working in the field today. You'll hear directly from researchers and practitioners at the forefront of the industry, discussing practical applications, emerging research, and nutritional strategies without the fluff. This isn't about theoretical deep dives; it's about what you can apply right now. The conversations are candid and geared toward professionals who need to stay current but are pressed for time. Tuning into this science-focused podcast means gaining a regular dose of peer-level insight, transforming a short commute or break into a genuine professional development session. It’s built for those who believe expertise should be accessible and efficient, providing a consistent stream of knowledge to help refine your approach and decision-making in swine nutrition.
Author: Language: en-us Episodes: 100

The Swine Nutrition Blackbelt Podcast
Podcast Episodes
Dr. Marco de Mik: Enhancing Piglet Gut Health | Ep. 226 [not-audio_url] [/not-audio_url]

Duration: 12:26
In this episode of The Swine Nutrition Blackbelt Podcast, we revisit a conversation with Dr. Marco de Mik, Senior Consultant at Schothorst Feed Research, who explores how to enhance gastrointestinal health in piglets for…
Grady Privett: Sorghum Inclusion in Sow Lactation Diets | Ep. 224 [not-audio_url] [/not-audio_url]

Duration: 10:16
In this episode of The Swine Nutrition Blackbelt Podcast, Grady Privett, a graduate student at Kansas State University, discusses research evaluating sorghum as a replacement for corn in lactation diets for sows. He disc…
Dr. Julian Arroyave: Nursery Feed Budgets | Ep. 223 [not-audio_url] [/not-audio_url]

Duration: 10:38
In this episode of The Swine Nutrition Blackbelt Podcast, Dr. Julian Arroyave, a research swine nutritionist at Carthage Innovative Swine Solutions, discusses nursery feed budget strategies designed to reduce costs witho…
Sydney Craig: Amino Acid Balance in Pig Nutrition | Ep. 222 [not-audio_url] [/not-audio_url]

Duration: 6:39
In this episode of The Swine Nutrition Blackbelt Podcast, Sydney Craig, graduate research assistant at Iowa State University, explains how arginine supplementation in lactating sows may affect piglet livability. She also…
Gustavo Lima: Net Energy Validation in Swine Diets | Ep. 221 [not-audio_url] [/not-audio_url]

Duration: 8:06
In this episode of The Swine Nutrition Blackbelt Podcast, Gustavo Lima, PhD candidate at Iowa State University, explains how soybean meal net energy is evaluated using growth assays and calorimetry. He discusses caloric…
Dr. Anja Strathe: Transition Feeding Strategies for Sows | Ep. 220 [not-audio_url] [/not-audio_url]

Duration: 9:44
In this episode of The Swine Nutrition Blackbelt Podcast, Dr. Anja Strathe, Associate Professor at the University of Copenhagen, explores nutritional strategies for sows during the transition from gestation to lactation.…
Dr. Luciana Rossi: Alternatives to Antibiotics | Ep. 219 [not-audio_url] [/not-audio_url]

Duration: 12:27
In this special re-run episode of The Swine Nutrition Blackbelt Podcast, we bring back our conversation with Dr. Luciana Rossi, Associate Professor at the University of Milan, who discusses alternatives to antibiotics in…
Dr. Amy Petry: Fiber And Enzymes | Ep. 218 [not-audio_url] [/not-audio_url]

Duration: 8:56
In this episode of The Swine Nutrition Blackbelt Podcast, Dr. Amy Petry from the University of Missouri discusses how dietary fiber and enzyme technologies influence energy utilization in swine diets. She explains the co…