Abstract: Estimating Transmission Dynamics of African Swine Fever Virus from Experimental Studies

Jan 09, 2023

Abstract: Estimating transmission dynamics of African swine fever virus from experimental studies

African swine fever virus (ASFV) continues to spread across the world, and currently, there are no treatments or vaccines available to combat this virus. Reliable estimates of transmission parameters for ASFV are therefore needed to establish effective contingency plans. This study used data from controlled ASFV inoculations of pigs to assess the transmission parameters. Three models were developed with (binary, piecewise-linear and exponential) time-dependent levels of infectiousness based on latency periods of 3-5 days derived from the analysis of 294 ethylenediamine tetraacetic acid-stabilized blood samples originating from 16 pigs with direct and 10 pigs with indirect contact to 8 inoculated pigs. The models were evaluated for three different discrete latency periods of infection. The likelihood ratio test showed that a binary model had an equally good fit for a latency period of 4 or 5 days as the piecewise-linear and exponential model. However, for a latency period of 3 days, the piecewise-linear and exponential models had the best fit.

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Video: Feeding Faba Bean to Pigs - Dr. Eduardo Beltranena

In this special rerun episode of The Swine it Podcast Show Canada, Dr. Eduardo Beltranena from North Carolina State University explains how faba beans can be used in pig diets as a source of both starch and protein. He discusses environmental benefits, inclusion rates, frost-damaged beans, tannin concerns, cultivar selection, and how producers can compare faba beans against cereals and protein meals for cost-effective feeding. Listen now on all major platforms!

"Faba beans provide both starch and protein, competing directly with cereals in swine diets."

Meet the guest: Dr. Eduardo Beltranena / eduardo-beltranena-61660a1b2 is an Assistant Professor and Extension Specialist at North Carolina State University. He holds a Ph.D. in nutrition and reproduction interactions from the University of Alberta and has worked across swine production, feed industry nutrition, contract research, government research, teaching, and extension. His work focuses on swine nutrition, regional feedstuffs, and practical feed formulation. Learn more from Dr. Eduardo Beltranena on The Swine it Podcast Show Canada, available on all major platforms.