scholarly journals Evaluation of growth and carcass performance of crossbred F1 between wild boar from Central Highland with Mong Cai and Soc pigs

2020 ◽  
Vol 18 (1) ◽  
pp. 67-73
Author(s):  
Hoang Nghia Son ◽  
Le Thanh Long
Keyword(s):  
Wild Boar ◽  
Weight Ratio ◽  
Backfat Thickness ◽  
F1 Hybrid ◽  
Wild Boars ◽  
Slaughter Weight ◽  
Central Highland ◽  
Carcass Performance ◽  
Meat Productivity ◽  
F1 Generation

This study aimed to evaluate the growth and meat productivity of F1 crossbreds between Central Highland wild boards with Mong Cai and Soc pigs. The experiment was conducted on 2 groups of F1 pigs including F1 crossbred between native wild boars and Mong Cai pigs (RxM), F1 crossbred between of native wild boars and Soc (RxS) pigs, and 2 groups of Mong Cai pigs (M) and Soc pigs (S). The results demonstrated that the growth of F1 pig of RxM group was higher than RxS group after 3 months and 8 months of breeding. The carcass analysis showed that there was no difference in the slaughter weight of pigs between the RxM and M groups, as well as between the RxS and S groups. Pigs from the S group showed the lowest hanging weight (17.60 ± 0.52 kg) and lowest dressed weight (14.92 ± 0.49 kg) among the groups. There was no difference in the hanging weight and dressed weight among the RxM and M groups. However, the ratio of hanging weight (75.95 ± 0.23%) and dressed weight ratio (65.00 ± 0.18%) of RxM group is higher than M group (72.53 ± 0.44% and 62.24 ± 0.51%, respectively). The RxS group also had a higher percentage of hanging weight (74.28 ± 0.57%) and dressed weight (63.73 ± 0.48%) than the S group (71.10 ± 0.40% and 60.25 ± 0.50%, respectively). In this study, we also found that F1 hybrid pigs exhibited a lower backfat thickness than the M and S groups. In contrast, the backskin thickness increased in F1 hybrid groups. The above results showed that the hybridization of with Mong Cai and Soc pigs with Central Highland wild boars could improve the meat productivity of their F1 generation.

scholarly journals Prevalence and Antimicrobial Resistances of Salmonella spp. Isolated from Wild Boars in Liguria Region, Italy

Pathogens ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 568
Author(s):  
Elisabetta Razzuoli ◽  
Valeria Listorti ◽  
Isabella Martini ◽  
Laura Migone ◽  
Lucia Decastelli ◽  
...  
Keyword(s):  
Antimicrobial Resistance ◽  
Wild Boar ◽  
Antimicrobial Susceptibility ◽  
Potential Risk ◽  
Salmonella Enterica ◽  
Intestinal Tract ◽  
Wild Boar Population ◽  
Salmonella Spp ◽  
Wild Boars ◽  
In The Wild

Salmonella spp. is an important zoonotic agent. Wild boars might host this pathogen in the intestinal tract and might represent a risk for Salmonella spp. transmission to humans. Wild boars are widely spread in Liguria, due to the environmental characteristics of the region. The aim of the study was the isolation, typing, and investigation of antimicrobial susceptibility of the isolated strains of Salmonella spp. During the 2013–2017 hunting seasons, 4335 livers of wild boars were collected and analyzed for the presence of Salmonella spp. A total of 260 strains of Salmonella spp. were isolated and characterized, with a prevalence of 6%. The isolated strains belonged to all six Salmonella enterica subspecies. Most of them were identified as Salmonella enterica subs. enterica of which 31 different serotypes were identified. The dominating serotype identified was S. Enteritidis. The antimicrobial resistance profiles of the isolated strains were analyzed against sixteen molecules. Of the isolated strains, 94.6% were resistant to at least one of the tested antimicrobials. This study showed the circulation of resistant Salmonella spp. strains in the wild boar population living in this area of Italy, underling the potential risk for these animals to disseminate this pathogen and its antimicrobial resistances.

scholarly journals Modelling the Spatial Distribution of ASF-Positive Wild Boar Carcasses in South Korea Using 2019–2020 National Surveillance Data

Animals ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1208
Author(s):  
Jun-Sik Lim ◽  
Timothée Vergne ◽  
Son-Il Pak ◽  
Eutteum Kim
Keyword(s):  
Spatial Distribution ◽  
Risk Factor ◽  
South Korea ◽  
Wild Boar ◽  
African Swine Fever Virus ◽  
Significant Risk ◽  
African Swine Fever ◽  
Credible Interval ◽  
Imperfect Detection ◽  
Wild Boars

In September 2019, African swine fever (ASF) was reported in South Korea for the first time. Since then, more than 651 ASF cases in wild boars and 14 farm outbreaks have been notified in the country. Despite the efforts to eradicate ASF among wild boar populations, the number of reported ASF-positive wild boar carcasses have increased recently. The purpose of this study was to characterize the spatial distribution of ASF-positive wild boar carcasses to identify the risk factors associated with the presence and number of ASF-positive wild boar carcasses in the affected areas. Because surveillance efforts have substantially increased in early 2020, we divided the study into two periods (2 October 2019 to 19 January 2020, and 19 January to 28 April 2020) based on the number of reported cases and aggregated the number of reported ASF-positive carcasses into a regular grid of hexagons of 3-km diameter. To account for imperfect detection of positive carcasses, we adjusted spatial zero-inflated Poisson regression models to the number of ASF-positive wild boar carcasses per hexagon. During the first study period, proximity to North Korea was identified as the major risk factor for the presence of African swine fever virus. In addition, there were more positive carcasses reported in affected hexagons with high habitat suitability for wild boars, low heat load index (HLI), and high human density. During the second study period, proximity to an ASF-positive carcass reported during the first period was the only significant risk factor for the presence of ASF-positive carcasses. Additionally, low HLI and elevation were associated with an increased number of ASF-positive carcasses reported in the affected hexagons. Although the proportion of ASF-affected hexagons increased from 0.06 (95% credible interval (CrI): 0.05–0.07) to 0.09 (95% CrI: 0.08–0.10), the probability of reporting at least one positive carcass in ASF-affected hexagons increased from 0.49 (95% CrI: 0.41–0.57) to 0.73 (95% CrI: 0.66–0.81) between the two study periods. These results can be used to further advance risk-based surveillance strategies in the Republic of Korea.

scholarly journals Trichinosis in Lublin Province in 2003-2010 on a Background of Wild Boar`S Population Dynamics

2012 ◽  
Vol 56 (1) ◽  
pp. 43-46
Author(s):  
Marian Flis
Keyword(s):  
Wild Boar ◽  
Fold Increase ◽  
Wild Boar Population ◽  
Wild Boars ◽  
Hospitalised Patients ◽  
Species Population ◽  
Wild Boar Meat ◽  
Population Interaction ◽  
Domestic Swine ◽  
Epidemiological Situation

Abstract The research aimed at evaluating the epizootic and epidemiological situation of trichinosis during the last 8 years in Lublin province on a background of progressing increase in wild boar population within the region and in the whole country. Data for the study were taken from the report on the results of the official examination of slaughter animals and meat, poultry, game, lagomorphs and aquaculture animals and six reports on the number of trichinosis cases found at wild boars and domestic swine. In order to evaluate the trichinosis epidemiological situation within the region, reports of the National Institute of Public Health-National Institute of Hygiene on the number of identified trichinosis cases in people, as well as the number of hospitalised patients were presented. In addition, information on the population and hunting achievement of wild boars in hunting circuits of Lublin province during the last 8 years was enclosed. The number of identified trichinosis cases in meat of wild boars from Lublin region increased 9 times, while the percentage of trichinosis occurrence in reference to the number of examined carcasses almost 3-fold. At the same period, the number of porcine carcasses, in which trichinosis was found, decreased by over 4 times. Over double increase in wild boar population on the studied area was observed during the evaluation. Dynamic increase in the population size - in an aspect of the species population interaction with the living habitat, and in the form of the increase in the number of damages of crops and cultivation fields - contributed to intensified hunting pressure towards the species expressed as almost 3-fold increase of wild boar hunting. Analysis of epizootic and epidemiological situation of Poland indicates that wild boar meat was the principal source of trichinosis during the studied period. Considering Lublin province, the number of identified trichinosis cases is still high as compared to eastern and central provinces. Meanwhile, when compared to western and northern Poland, the level of trichinosis invasion can be considered as low. Furthermore, the trichinosis morbidity among people, that does not exceed 0.18/100 thousand inhabitants, can be regarded as low. Nevertheless, the fact of underestimating the necessity of both wild boar’s and swine’s meat examination seems to be alarming

The effect of carcass weight on chemical characteristics and fatty acid composition of Longissimus dorsi and Semimembranosus muscles of European wild boar (Sus scrofa scrofa) meat

2018 ◽  
Vol 98 (3) ◽  
pp. 557-564
Author(s):  
Martyna Batorska ◽  
Justyna Więcek ◽  
Małgorzata Kunowska-Slósarz ◽  
Kamila Puppel ◽  
Jan Slósarz ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Fatty Acid Composition ◽  
Fatty Acid ◽  
Wild Boar ◽  
Sus Scrofa ◽  
Carcass Weight ◽  
Longissimus Dorsi ◽  
Chemical Characteristics ◽  
Wild Boars ◽  
European Wild Boar

The objective of this study was to investigate the effect of carcass weight on chemical characteristics and fatty acid composition of m. longissimus dorsi and m. semimembranosus of European wild boar (Sus scrofa scrofa) meat. The research was carried out on 50 wild boars shot during four battues at hunting reserves in the central part of Poland. The carcasses were divided into three groups: ≤30 kg (G1), 31–45 kg (G2), and >45 kg (G3). The protein concentration increased with carcass weight (P ≤ 0.01). The concentration of saturated fatty acids was influenced by carcass weight and was higher when weight increased. A significantly higher level of monounsaturated fatty acids (MUFA) was found in the carcasses of wild boars from G3 compared with G1 group (P ≤ 0.01). The content of C18:2n-6 was significantly lower in the lightest carcasses compared with the heaviest (P ≤ 0.05). Statistical analysis confirmed that carcasses weight significantly affected polyunsaturated fatty acids (PUFA) n-3 content. The lightest carcasses contained a significantly higher concentration of PUFA n-3 (P ≤ 0.01). In addition, in G3, the amount of C22:5n-3 was two-fold lower (P ≤ 0.01) than in G1. The research has shown that the meat quality was affected by the carcass weight, resulting better parameters in the lighter than in the heavier carcasses. Therefore, most of the culled wild boars should be squeakers and young boars after the first year of life.

scholarly journals Cell Culture Isolation and Whole Genome Characterization of Hepatitis E Virus Strains from Wild Boars in Germany

2021 ◽  
Vol 9 (11) ◽  
pp. 2302
Author(s):  
Katja Schilling-Loeffler ◽  
Oliver Viera-Segura ◽  
Victor Max Corman ◽  
Julia Schneider ◽  
Ashish K. Gadicherla ◽  
...  
Keyword(s):  
Cell Culture ◽  
Wild Boar ◽  
Hepatitis E Virus ◽  
Hepatitis E ◽  
Enriched Library ◽  
Genome Copy ◽  
Genotype 3 ◽  
Wild Boars ◽  
Copy Numbers ◽  
Cell Culture Isolation

Infection with hepatitis E virus (HEV) can cause acute and chronic hepatitis in humans. The HEV genotype 3 can be zoonotically transmitted from animals to humans, with wild boars representing an important reservoir species. Cell culture isolation of HEV is generally difficult and mainly described for human isolates so far. Here, five sera and five liver samples from HEV-RNA-positive wild boar samples were inoculated onto PLC/PRF/5 cells, incubated for 3 months and thereafter passaged for additional 6 weeks. As demonstrated by RT-qPCR, immunofluorescence and immune electron microscopy, virus was successfully isolated from two liver samples, which originally contained high HEV genome copy numbers. Both isolates showed slower growth than the culture-adapted HEV strain 47832c. In contrast to this strain, the isolated strains had no insertions in their hypervariable genome region. Next generation sequencing using an HEV sequence-enriched library enabled full genome sequencing. Strain Wb108/17 belongs to subtype 3f and strain Wb257/17 to a tentative novel subtype recently described in Italian wild boars. The results indicate that HEV can be successfully isolated in cell culture from wild boar samples containing high HEV genome copy numbers. The isolates may be used further to study the zoonotic potential of wild boar-derived HEV subtypes.

scholarly journals Effect of time and temperature before chilling on the hygiene of carcasses in wild boar hunted in central Italy

2022 ◽  
Vol 10 (4) ◽  
Author(s):  
Roberto Barbani ◽  
Giulia Lalinga ◽  
Lia Bardasi ◽  
Raffaella Branciari ◽  
Dino Miraglia ◽  
...  
Keyword(s):  
Wild Boar ◽  
Environmental Temperature ◽  
Central Italy ◽  
Colony Count ◽  
Elapse Time ◽  
Moderate Correlation ◽  
Factors Affecting ◽  
Wild Boars ◽  
The Mean ◽  
Mean Time

The interest in certified game meat chains highlights the need for the evaluation and the management of factors affecting carcass hygiene along the peculiar steps of the production. The effects of time and temperature before chilling were specifically evaluated on aerobic colony count and Enterobacteriaceae count in hunted wild boar carcasses. Thirty wild boars were considered in two process steps where the hunted animal are still not chilled: after evisceration and just before chilling. Environmental temperature, carcass temperature and the elapse time between the two-step considered were registered. Furthermore, surface microbial loads were analyzed on the inner part of the carcasses. The mean time between the two sampling steps was 6 hours with an average environmental temperature of 20.49°C. A carcass temperature 9.6°C drop was observed during this period. In this lap of time aerobic colony count and Enterobacteriaceae count increased of 0.68 Log CFU/cm2 and 1.01 Log CFU/cm2 respectively, with a moderate correlation with the time but not with the temperature delta. The results reveal that the temperature conditions in central Italy hunting areas were not able to quickly reduce the carcass temperature and therefore the time between carcass evisceration and chilling should not exceed 6 hours.

scholarly journals Serological and molecular survey of Leptospira spp. infections in wild boars and red foxes from Southeastern France

2021 ◽  
Vol 14 (4) ◽  
pp. 825-828
Author(s):  
Cédric Roquelo ◽  
Angeli Kodjo ◽  
Jean-Lou Marié ◽  
Bernard Davoust
Keyword(s):  
Wild Boar ◽  
Predatory Behavior ◽  
Red Foxes ◽  
Cross Sectional Survey ◽  
Cross Sectional ◽  
Wild Boars ◽  
Disease Information ◽  
Leptospira Spp ◽  
Varied Diet ◽  
Polymerase Chain

Background and Aim: Leptospirosis is a zoonotic disease. Information on the recent prevalence of Leptospira in hunted wild animals is limited, particularly in southeastern France. A cross-sectional survey was conducted to assess the prevalence and diversity of Leptospira spp. among wild boars (Sus scrofa) and red foxes (Vulpes vulpes) from two military camps in Southeastern France. Materials and Methods: Serological analyses were performed using microscopic agglutination tests and polymerase chain reaction (PCR) assays were used to demonstrate Leptospira spp. infection from boar kidney DNA extracts. Results: According to the species, the positive sera were obtained from 18% of 358 boars and 6 % of 64 foxes tested. The prevalence rate is significantly higher (p=0.02) in boars than in foxes. In wild boar, Australis represents the most recorded serogroup (15.9%), followed by Sejroe (2.8%) and icterohaemorhagiae (2.8%). In red fox, icterohaemorhagiae represents the most recorded serogroup (6.25%), followed by Sejroe (1.57%) and Hebdomadis (1.57%). PCR-based detection of Leptospira DNA was positive in 6/62 (9.6%) of the wild boars tested. Conclusion: The results of this study confirmed the importance of wild boar in the epidemiology of leptospirosis among wildlife in Southeastern France. Due to their predatory behavior and their varied diet, mainly composed of small mammals, red foxes could be considered sentinel animals of environmental contamination with leptospires.

scholarly journals Frequency analysis of changes and disease symptoms in wild boars in Poland in 2015-2019

2021 ◽  
Vol 52 (5) ◽  
Author(s):  
Krzysztof Górski ◽  
Elżbieta Bombik ◽  
Stanisław Kondracki
Keyword(s):  
Wild Boar ◽  
Frequency Analysis ◽  
Parasitic Diseases ◽  
Parasitic Disease ◽  
Post Mortem ◽  
Frequent Change ◽  
Disease Symptoms ◽  
Wild Boars

The aim of the study was to analyse the results of the post-mortem sanitary and veterinary examinations of wild boar by the Veterinary Inspection in Poland between 2015 and 2019. The examination took into account changes such as emaciation, septicaemia and pyaemia, parasitic diseases and other. Analyses determined the number of animals examined, the number of carcasses with lesions, and the number of carcasses declared unfit for consumption. During the study period, more than 680,000 wild boars were subjected to sanitary and veterinary tests in Poland. Symptoms or lesions were found in 11,566 animals (1.70%), and 10,883 (1.60%) animals were declared unfit for consumption. The percentage of wild boar carcasses with lesions examined by year ranged from 1.23% in 2015 to 2.02% in 2019 and the percentage of wild boar carcasses declared unfit in relation to all carcasses tested ranged from 1.23% in 2015 to 1.88% in 2019. Parasitic lesions were found in 3488 wild boar carcasses, accounting for 30.16% of all changes recorded in wild boar carcasses. The most common parasitic disease was trichinellosis and the most frequent change was emaciation, which was recorded in 2665 (0.39%) animals. Putrefaction is a common lesion in wild boar carcasses, and was detected in 2546 (0.37%) animals. Territorial differences were found in the frequency of lesions in wild boars in Poland. The most trichinellosis cases in carcasses was recorded in Zachodniopomorskie Voivodeship (748) and Wielkopolskie Voivodeship (638). Kujawsko-pomorskie Voivodeship and Wielkopolskie Voivodeship together had a total of 2324 cases of emaciation, accounting for 87.2% of all cases of these changes registered in the study period. The largest number of wild boar carcasses declared unfit for consumption was found in Kujawsko-pomorskie Voivodeship (3356) and Zachodniopomorskie Voivodeship (2692), together accounting for 6048 unfit carcasses, or more than 55% of all carcasses declared unfit for consumption during the study period. The number of wild boars diagnosed with trichinellosis increased during the study period and was highest during 2019, with a systematic increase in the percentage of carcasses declared unfit for consumption in relation to the total.

scholarly journals The Boar Ecology in Natural and Man-Made Landscapes of the Tambov Region

2021 ◽  
pp. 069-081
Author(s):  
A. Yu. Okolelov ◽  
◽  
M. A. Miklyaeva ◽  
O. M. Zolotova ◽  
A. V. Kozachek ◽  
...  
Keyword(s):  
Wild Boar ◽  
Limiting Factors ◽  
Food Ration ◽  
Wild Boars ◽  
Number Distribution

Some features of wild boar ecology in the natural and man-made landscapes of the Tambov region have been studied. The dynamics of the number, distribution, food ration, breeding characteristics, limiting factors and protection of wild boars in the region have been analyzed.

scholarly journals Copy Number and Prevalence of Porcine Endogenous Retroviruses (PERVs) in German Wild Boars

Viruses ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 419
Author(s):  
Luise Krüger ◽  
Milena Stillfried ◽  
Carolin Prinz ◽  
Vanessa Schröder ◽  
Lena Katharina Neubert ◽  
...  
Keyword(s):  
Wild Boar ◽  
Copy Number ◽  
Digital Pcr ◽  
Endogenous Retroviruses ◽  
Wild Boars ◽  
Domestic Pigs ◽  
Copy Numbers ◽  
Cellular Genes ◽  
Porcine Endogenous Retroviruses ◽  
Different Populations

Porcine endogenous retroviruses (PERVs) are integrated in the genome of pigs and are transmitted like cellular genes from parents to the offspring. Whereas PERV-A and PERV-B are present in all pigs, PERV-C was found to be in many, but not all pigs. When PERV-C is present, recombination with PERV-A may happen and the PERV-A/C recombinants are characterized by a high replication rate. Until now, nothing has been known about the copy number of PERVs in wild boars and little is known about the prevalence of the phylogenetically youngest PERV-C in ancient wild boars. Here we investigated for the first time the copy number of PERVs in different populations of wild boars in and around Berlin using droplet digital PCR. Copy numbers between 3 and 69 per genome have been measured. A lower number but a higher variability was found compared to domestic pigs, including minipigs reported earlier (Fiebig et al., Xenotransplantation, 2018). The wild boar populations differed genetically and had been isolated during the existence of the Berlin wall. Despite this, the variations in copy number were larger in a single population compared to the differences between the populations. PERV-C was found in all 92 analyzed animals. Differences in the copy number of PERV in different organs of a single wild boar indicate that PERVs are also active in wild boars, replicating and infecting new cells as has been shown in domestic pigs.

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