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Swine genetics and reproduction

Welcome to the page about Swine genetics and reproduction of Engormix; a source of knowledge on Swine genetics and reproduction.
Introduction: An effective insemination management is the basis for a successful piglet production. Hormonal stimulation and synchronization is common practice in farms, mostly using equine chorionic gonadotropin (eCG). A FTI protocol is now available using Buserelin (Porceptal®, MSD Animal Health), a synthetic GnRH-analog compound. The main feature of this protocol is the requirement for only one insemination per sow. This study was conducted to compare the FTI with...
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Paulo Arruda
Iowa State University
Introduction: Congenital tremors is a disease of neonatal pigs characterized by action-related repetitive myoclonus. Despite early documentation (nearly 100 years ago) and worldwide distribution of the disease, the etiology of a majority of contemporary outbreaks remains a mystery but has been speculated to be an unidentified virus. This investigation describes the identification of a divergent lineage pestivirus in samples from piglets with congenital tremors and not unaffected...
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Recommended events
Animal Nutrition Conference of Canada 2024
May 14, 2024
Canada - Manitoba - Winnipeg
Introduction: Porcine reproductive and respiratory syndrome virus (PRRSV) is a well-known cause of reproductive failure worldwide. It is known that PRRSV can induce apoptosis under in-vitro conditions, and is significantly associated with cell the occurrence of cell death in multiple infected tissues invivo. The mechanism of cell death occurring at the maternal-fetal interface during PRRSV infection, and the relationship of cell death to the cytopathic effect of the PRRSV and...
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Introduction: PRRS virus was identified in 1990' earlier and classified two groups in type 1 and type 2 genetically. PRRS virus has been discovered all over the world. PRRS modified live virus vaccines are introduced in many country to control PRRS. But these PRRS live virus vaccines didn’t defend against heterologous PRRS virus perfectly. This field case shows reproductive performance after type 1 modified live virus vaccination when it is infected with type 1...
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Introduction: The effects of the oral supplementation of probiotics on the performance (weight gain and feed intake) and intestinal histo-morphology of the duodenal, jejunal, and ileal mucosa (villus height, width, and perimeter and crypt depth) of two different genetic lines (purebred Large White or crossbred Large White x Landrace) of suckling piglets. Materials and Methods: The suckling piglets were evaluated between 2 and 19 days of age. In total, 276...
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Manuel Juarez
Agriculture and Agri-Food Canada
Canada is one of the largest pork and beef exporters in the world. The volume and value of Canadian meat exports have increased to ~$9 billion/year, and the export markets have expanded significantly from the traditional buyers. However, the meat export landscape has evolved during the last years, becoming more competitive, with major players trying to access the same import markets. Quality assurance and meat differentiation based on quality attributes contribute to meeting domestic and...
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Laura Greiner
Laura Greiner and 1 more
The use of RFLPs by veterinarians
Kimberly VanderWaal (University of Minnesota) comments on the use of sequence data by veterinarians, during this Swine It interview with host Laura Greiner....
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Laura Greiner
Laura Greiner and 1 more
How do we classify PRRS viruses?
Kimberly VanderWaal (University of Minnesota) comments on RFLP types and differentiation of viruses, during this Swine It interview with host Laura Greiner....
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Laura Greiner
Laura Greiner and 1 more
Strain classification - PRRS viruses
Kimberly VanderWaal (University of Minnesota) talks about genome sequencing and classification of viruses, during this Swine It interview with host Laura Greiner....
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In the U.S., consolidation and vertical integration of the swine industry has been associated with dramatic changes in breeding herd management. For example, the proportion of sows bred via artificial insemination increased from approximately 8% in 1991 (Burke, 2000) to nearly 70% in 2000 (Lawrence and Grimes, 2001). In a typical large-scale swine operation, semen is collected once or twice a week from boars located at off-site "boar studs". Studs usually house 200 or more boars....
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Don Giesting
Don Giesting and 1 more
Mycotoxin effects on swine
Don Giesting (Cargill) discusses the characteristics of zearalenone and deoxynivalenol (DON), as well as their impact on reproduction and feed intake, during this Swine It interview with host Laura Greiner....
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Don Giesting
Don Giesting and 1 more
Long-term impacts of zearalenone in pigs
Don Giesting (Cargill) comments on zearalenone effects on swine reproduction, during this Swine It interview with host Laura Greiner....
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Fernando Cane
Fernando Cane and 1 more
1. Introduction Artificial insemination (AI) in modern pig reproduction requires liquid-stored extended-semen. Extenders provide sperm with nutrients to maintain metabolic processes (1), prevent cold shock (2), control osmotic pressure and pH (3), and antibiotics present in extender inhibit bacterial growth (4). Despite the substantial improvements made on extender formulations in recent years, the quality of stored sperm decreases over time primarily due to the increased...
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Swine genetic programs and recommended approach
In this Engormix interview, Todd Thurman (Swine Insights International) explains how to keep the best balance between different goals: genetic progress and commercial production....
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Nick Gallina
Purdue University (USA)
Nick Gallina (Purdue University)      Background: Enterotoxigenic Escherichia coli (ETEC) strains are the primary perpetrators of colibacillosis in piglets, resulting in mortality and agribusiness economic woes. ETEC expressing fimbrial antigens, F4 and F18, are the predominant contributors to colibacillosis. F4 is most prevalent in neonatal diarrhea. F18 is more common in post-weaning colibacillosis. Intestinal epithelial interaction and...
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Nick Gallina
Purdue University (USA)
Genomic analysis and adhesion of enterotoxigenic Escherichia coli F4 and F18 strains on porcine intestinal epithelial cell lines
Nick Gallina (Purdue University) speaks on serotypes of E. coli in pigs, and presents studies aimed at developing more effective mitigation measures using cell models, during the 11th Symposium on Gut Health in Production of Food Animals in St. Louis, USA....
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Robert Kemp
Robert Kemp and 1 more
Pork production in 10 years
Bob Kemp (Genesus) offers his insights on pork meat quality and the market outlook, during this Swine It interview with host Laura Greiner....
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Robert Kemp
Robert Kemp and 1 more
Pork quality vs. the cost of production
Bob Kemp (Genesus) talks about feed efficiency, growth rate and genetic selection, during this Swine It interview with host Laura Greiner....
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Introduction: Aujeszky disease is still a major pathogen causing respiratory problem and reproduction failure in Taiwanese swine herds. Though eradication program in breeder farms is in progress, no standard vaccination program recommended for commercial farms. Recently Area Regional Control (ARC) became popular for its benefit of diseases control in an area level. In this study, we report a survey on sero-prevalence of Aujeszky disease in a small swine production group in east...
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Introduction: In mated sows, corpus luteum (CL) function is important for the establishment of the pregnancy. The maximum CL size is established at day 8 - 9 of the pregnancy and maintained autonomous until day 12. Then, CL maintenance will depend on hormones such as LH and PGF2α. PGF2α is released from the endometrium at day 14 and triggers CL regression. This regression can be prevented in pregnant sows due to estradiol production from the attaching conceptuses;...
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