Immune competence traits assessed during the stress of weaning are heritable and favorably genetically correlated with temperament traits in Angus cattle1

Abstract Selection for production traits with little or no emphasis on health-related traits has the potential to increase susceptibility to disease in food-producing animals. A possible genetic strategy to mitigate such effects is to include both production and health traits in the breeding objective when selecting animals. For this to occur, reliable methodologies are required to assess beneficial health traits, such as the immune capacity of animals. We describe here a methodology to assess the immune competence of beef cattle which is both practical to apply on farm and does not restrict the future sale of tested animals. The methodology also accommodates variation in prior vaccination history of cohorts of animals being tested. In the present study, the immune competence phenotype of 1,100 Angus calves was assessed during yard weaning. Genetic parameters associated with immune competence traits were estimated and associations between immune competence, temperament, and stress-coping ability traits were investigated. Results suggested that immune competence traits, related to an animal’s ability to mount both antibody and cell-mediated immune responses, are moderately heritable (h2 = 0.32 ± 0.09 and 0.27 ± 0.08, respectively) and favorably genetically correlated with the temperament trait, flight time (r = 0.63 ± 0.31 and 0.60 ± 0.29 with antibody and cell-mediated immune responses, respectively). Development of methodologies to assess the immune competence phenotype of beef cattle is a critical first step in the establishment of genetic selection strategies aimed at improving the general disease resistance of beef herds. Strategies aimed at reducing the incidence of disease in beef cattle are expected to significantly improve animal health and welfare, reduce reliance on the use of antibiotics to treat disease, and reduce disease-associated costs incurred by producers.

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High Heritabilities for Antibiotic Usage Show Potential to Breed for Disease Resistance in Finishing Pigs

Antibiotics ◽

10.3390/antibiotics10070829 ◽

2021 ◽

Vol 10 (7) ◽

pp. 829

Author(s):

Wim Gorssen ◽

Dominiek Maes ◽

Roel Meyermans ◽

Jürgen Depuydt ◽

Steven Janssens ◽

...

Keyword(s):

Pathogenic Bacteria ◽

Animal Health ◽

Molecular Genetic ◽

Genetic Correlations ◽

Genetic Selection ◽

Antibiotic Usage ◽

Finishing Pigs ◽

Production Traits ◽

Parenteral Antibiotic ◽

On Farm

The use of antimicrobials in animal production is under public debate, mainly due to the risk of transfer of resistance to pathogenic bacteria in humans. Therefore, measures have been taken during the last few decades to reduce antibiotic usage in animals, for instance, by national monitoring programmes and by improving animal health management. Although some initiatives exist in molecular genetic selection, quantitative genetic selection of animals towards decreased antibiotic usage is an underexplored area to reduce antibiotic usage. However, this strategy could yield cumulative effects. In this study, we derived new phenotypes from on-farm parenteral antibiotic records from commercially grown crossbred finishing pigs used in the progeny test of Piétrain terminal sires to investigate the heritability of antibiotics usage. Parenteral antibiotic records, production parameters and pedigree records of 2238 full-sib pens from two experimental farms in Belgium between 2014 and 2020 were analysed. Heritability estimates were moderate (18–44%) for phenotypes derived from all antibiotic treatments, and low (1–15%) for phenotypes derived from treatments against respiratory diseases only. Moreover, genetic correlations between these new phenotypes and mortality were low to moderate (0.08–0.60) and no strong adverse genetic correlations with production traits were found. The high heritabilities and favourable genetic correlations suggest these new phenotypes, derived from on-farm antibiotics records, to be promising for inclusion in future pig breeding programs to breed for a decrease in antibiotics usage.

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High heritabilities for antibiotic usage show potential to breed for disease resistance in finishing pigs

10.1101/2021.06.17.448802 ◽

2021 ◽

Author(s):

Wim Gorssen ◽

Dominiek Maes ◽

Roel Meyermans ◽

Jurgen Depuydt ◽

Steven Janssens ◽

...

Keyword(s):

Pathogenic Bacteria ◽

Animal Health ◽

Molecular Genetic ◽

Genetic Correlations ◽

Genetic Selection ◽

Antibiotic Usage ◽

Finishing Pigs ◽

Production Traits ◽

Parenteral Antibiotic ◽

On Farm

The use of antimicrobials in animal production is under public debate, mainly due to the risk of transfer of resistance to pathogenic bacteria in humans. Therefore, measures have been taken during the last decades to reduce antibiotic usage in animals, for instance by national monitoring programmes and by improving animal health management. Although some initiatives exist in molecular genetic selection, quantitative genetic selection of animals towards decreased antibiotic usage is an underexplored area to reduce antibiotic usage. However, this strategy could yield cumulative effects. In this study we derived new phenotypes from on-farm parenteral antibiotic records from commercially grown crossbred finishing pigs used in the progeny test of Pietrain terminal sires to investigate the heritability of antibiotics usage. Parenteral antibiotic records, production parameters and pedigree records of 2238 full-sib pens from two experimental farms in Belgium between 2014 and 2020 were analysed. Heritability estimates were moderate (18-44%) for phenotypes derived from all antibiotic treatments, and low (1-15%) for phenotypes derived from treatments against respiratory diseases only. Moreover, genetic correlations between these new phenotypes and mortality were low to moderate (0.08-0.60) and no strong adverse genetic correlations with production traits were found. The high heritabilities and favourable genetic correlations suggest these new phenotypes derived from on-farm antibiotics records to be promising for inclusion in future pig breeding programs to breed for a decrease in antibiotics usage.

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Thymoma in an aged backyard Leghorn chicken, with reviews of a database and literature

Journal of Veterinary Diagnostic Investigation ◽

10.1177/1040638721990896 ◽

2021 ◽

Vol 33 (2) ◽

pp. 336-339

Author(s):

Julia Blakey ◽

Carmen Jerry ◽

Ana da Silva ◽

Simone Stoute

Keyword(s):

Soft Tissue Mass ◽

Animal Health ◽

Postmortem Examination ◽

Cervical Region ◽

Laboratory System ◽

Unexpected Death ◽

Tissue Mass ◽

Microscopic Features ◽

History Of ◽

Backyard Chickens

A 7-y-old backyard Leghorn chicken ( Gallus domesticus) was submitted to the California Animal Health and Food Safety Laboratory System (CAHFS)–Turlock branch for postmortem examination, with a history of unexpected death. At postmortem examination, a hemorrhagic soft tissue mass was observed in the cervical region. Microscopically, a densely cellular neoplasm of polygonal epithelial cells and small lymphocytes was observed. The microscopic features of the neoplasm in combination with positive immunohistochemistry for pancytokeratin and CD3 were used to classify the lesion as a thymoma. Thymoma was diagnosed in only 5 birds submitted to CAHFS from 1990 to 2019. Thymoma has been described only rarely in birds, and is an unusual diagnosis in backyard chickens.

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Vaccination strategy and anti - SARS-CoV-2 S titers in healthcare workers of the INT – IRCCS “Fondazione Pascale” Cancer Center (Naples, Italy)

Infectious Agents and Cancer ◽

10.1186/s13027-021-00375-2 ◽

2021 ◽

Vol 16 (1) ◽

Author(s):

Ernesta Cavalcanti ◽

Maria Antonietta Isgrò ◽

Domenica Rea ◽

Lucia Di Capua ◽

Giusy Trillò ◽

...

Keyword(s):

Immune Response ◽

Immune Responses ◽

Healthcare Workers ◽

Geometric Mean ◽

Vaccination Strategy ◽

Antibody Responses ◽

Cancer Center ◽

Serum Samples ◽

Humoral Immune ◽

History Of

Abstract Background Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) infection and the resulting disease, coronavirus disease 2019 (COVID-19), have spread to millions of people globally, requiring the development of billions of different vaccine doses. The SARS-CoV-2 spike mRNA vaccine (named BNT162b2/Pfizer), authorized by the FDA, has shown high efficacy in preventing SARS-CoV-2 infection after administration of two doses in individuals 16 years of age and older. In the present study, we retrospectively evaluated the differences in the SARS-CoV-2 humoral immune response after vaccine administration in the two different cohorts of workers at the INT - IRCCS “Fondazione Pascale” Cancer Center (Naples, Italy): previously infected to SARS-CoV-2 subjects and not infected to SARS-CoV-2 subjects. Methods We determined specific anti-RBD (receptor-binding domain) titers against trimeric spike glycoprotein (S) of SARS-CoV-2 by Roche Elecsys Anti-SARS-CoV-2 S immunoassay in serum samples of 35 healthcare workers with a previous documented history of SARS-CoV-2 infection and 158 healthcare workers without, after 1 and 2 doses of vaccine, respectively. Moreover, geometric mean titers and relative fold changes (FC) were calculated. Results Both previously infected and not infected to SARS-CoV-2 subjects developed significant immune responses to SARS-CoV-2 after the administration of 1 and 2 doses of vaccine, respectively. Anti-S antibody responses to the first dose of vaccine were significantly higher in previously SARS-CoV-2-infected subjects in comparison to titers of not infected subjects after the first as well as the second dose of vaccine. Fold changes for subjects previously infected to SARS-CoV-2 was very modest, given the high basal antibody titer, as well as the upper limit of 2500.0 BAU/mL imposed by the Roche methods. Conversely, for naïve subjects, mean fold change following the first dose was low ($$ \overline{x} $$ x ¯ =1.6), reaching 3.8 FC in 72 subjects (45.6%) following the second dose. Conclusions The results showed that, as early as the first dose, SARS-CoV-2-infected individuals developed a remarkable and statistically significant immune response in comparison to those who did not contract the virus previously, suggesting the possibility of administering only one dose in previously SARS-CoV-2-infected subjects. FC for previously infected subjects should not be taken into account for the generally high pre-vaccination values. Conversely, FC for not infected subjects, after the second dose, were = 3.8 in > 45.0% of vaccinees, and ≤ 3.1 in 19.0%, the latter showing a potential susceptibility to further SARS-CoV-2 infection.

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The Health and Well-Being of African-American Older Adults With a History of Incarceration

Innovation in Aging ◽

10.1093/geroni/igaa057.1633 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 506-506

Author(s):

Rodlescia Sneed

Keyword(s):

Older Adults ◽

African American ◽

African Americans ◽

Well Being ◽

Formerly Incarcerated ◽

Older Prisoners ◽

Health Related ◽

History Of ◽

Health And Well Being ◽

African American Older Adults

Abstract African-Americans are overrepresented in the criminal justice system. Longer prison stays and release programs for older prisoners may result in an increased number of community-dwelling older adults with a history of incarceration. In recent years, there has been a substantial increase in research on health-related outcomes for currently incarcerated older adults; however, there has been little inquiry into outcomes for formerly incarcerated African-American older adults following community re-entry. In this study, we used secondary data from the Health and Retirement Study to describe employment, economic, and health-related outcomes in this population. Twelve percent of the 2238 African-Americans in our sample had been previously incarcerated. Those who had been previously incarcerated had higher rates of lung disease, arthritis, back problems, mobility problems, and mental health issues than their counterparts. They also had higher rates of hospitalization and lower use of dental health services. Further, while they did not experience lower employment rates than those with no criminal history, those who had been incarcerated had more physically demanding jobs and reported greater economic strain. Given the disproportionate incarceration rates among African-Americans, the aging of the prison population, and the increase in community re-entry for older prisoners, research that explores factors that impact the health and well-being of formerly incarcerated individuals has broad impact. Future work should focus on addressing the needs of this vulnerable population of African-American older adults.

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Recent genetic advances on boar taint reduction as an alternative to castration: a review

Journal of Applied Genetics ◽

10.1007/s13353-020-00598-w ◽

2021 ◽

Author(s):

Darlene Ana Souza Duarte ◽

Martine Schroyen ◽

Rodrigo Reis Mota ◽

Sylvie Vanderick ◽

Nicolas Gengler

Keyword(s):

Genetic Selection ◽

Boar Taint ◽

Production Traits ◽

Fat Tissue ◽

Reproduction Traits ◽

Unpleasant Odor ◽

High Heritability ◽

Pig Meat ◽

Or Genes ◽

Synthesis And Degradation

AbstractBoar taint is an unpleasant odor in male pig meat, mainly caused by androstenone, skatole, and indole, which are deposited in the fat tissue. Piglet castration is the most common practice to prevent boar taint. However, castration is likely to be banished in a few years due to animal welfare concerns. Alternatives to castration, such as genetic selection, have been assessed. Androstenone and skatole have moderate to high heritability, which makes it feasible to select against these compounds. This review presents the latest results obtained on genetic selection against boar taint, on correlation with other traits, on differences in breeds, and on candidate genes related to boar taint. QTLs for androstenone and skatole have been reported mainly on chromosomes 6, 7, and 14. These chromosomes were reported to contain genes responsible for synthesis and degradation of androstenone and skatole. A myriad of work has been done to find markers or genes that can be used to select animals with lower boar taint. The selection against boar taint could decrease performance of some reproduction traits. However, a favorable response on production traits has been observed by selecting against boar taint. Selection results have shown that it is possible to reduce boar taint in few generations. In addition, modifications in diet and environment conditions could be associated with genetic selection to reduce boar taint. Nevertheless, costs to measure and select against boar taint should be rewarded with incentives from the market; otherwise, it would be difficult to implement genetic selection.

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Corrigendum to: Consequences of genetic selection for environmental impact traits on economically important traits in dairy cows

Animal Production Science ◽

10.1071/an16592_co ◽

2018 ◽

Vol 58 (10) ◽

pp. 1966

Author(s):

Purna Kandel ◽

Sylvie Vanderick ◽

Marie-Laure Vanrobays ◽

Hélène Soyeurt ◽

Nicolas Gengler

Keyword(s):

Dairy Cows ◽

Body Condition Score ◽

Genetic Correlations ◽

Genetic Selection ◽

Selection Response ◽

Direct Selection ◽

Correlated Response ◽

Production Traits ◽

Ch4 Emissions ◽

Natural Logarithm

Methane (CH4) emission is an important environmental trait in dairy cows. Breeding aiming to mitigate CH4 emissions require the estimation of genetic correlations with other economically important traits and the prediction of their selection response. In this study, test-day CH4 emissions were predicted from milk mid-infrared spectra of Holstein cows. Predicted CH4 emissions (PME) and log-transformed CH4 intensity (LMI) computed as the natural logarithm of PME divided by milk yield (MY). Genetic correlations of PME and LMI with traits used currently were approximated from correlations between estimated breeding values of sires. Values were for PME with MY 0.06, fat yield (FY) 0.09, protein yield (PY) 0.13, fertility 0.17; body condition score (BCS) –0.02; udder health (UDH) 0.22; and longevity 0.22. As expected by its definition, values were negative for LMI with production traits (MY –0.61; FY –0.15 and PY –0.40) and positive with fertility (0.36); BCS (0.20); UDH (0.08) and longevity (0.06). The genetic correlations of 33 type traits with PME ranged from –0.12 to 0.25 and for LMI ranged from –0.22 to 0.18. Without selecting PME and LMI (status quo) the relative genetic change through correlated responses of other traits were in PME by 2% and in LMI by –15%, but only due to the correlated response to MY. Results showed for PME that direct selection of this environmental trait would reduce milk carbon foot print but would also affect negatively fertility. Therefore, more profound changes in current indexes will be required than simply adding environmental traits as these traits also affect the expected progress of other traits.

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The national animal health monitoring system in Colorado beef herds: Disease rates and their associated costs

Preventive Veterinary Medicine ◽

10.1016/0167-5877(90)90012-7 ◽

1990 ◽

Vol 8 (2-3) ◽

pp. 203-214 ◽

Cited By ~ 6

Author(s):

M.D. Salman ◽

M.E. King ◽

T.E. Wittum ◽

C.R. Curtis ◽

K.G. Odde ◽

...

Keyword(s):

Monitoring System ◽

Health Monitoring ◽

Animal Health ◽

Health Monitoring System ◽

Disease Rates ◽

Beef Herds

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Strategie e strumenti per la valorizzazione delle produzioni nella filiera bovina: il fattore genoma

ECONOMIA AGRO-ALIMENTARE ◽

10.3280/ecag2012-002004 ◽

2012 ◽

pp. 63-83

Author(s):

Francesco Zecca ◽

Elisabetta Capocchi

Keyword(s):

Bovine Genome ◽

Animal Health ◽

Genetic Selection ◽

Analytical Framework ◽

Cattle Industry ◽

Cattle Feed ◽

Use Of Technology ◽

Representative Species ◽

Working Set ◽

Target Characteristics

The aim of the project was to examine the features involved in product quality and animal health for the purposes of genetic selection in order to achieve the best quality in each of the species and/or breeds under consideration. Among the tasks carried out the working group had to verify the socio-economic development of the most satisfactory end results as determined by the working set of genetic selections in the light of continuous advances in knowledge regarding the bovine genome. The analysis was limited to cattle as they were considered the most representative species for the purpose of the study. The study started with an analysis of the sector to investigate the proactive dynamics concerning the use of technology in the cattle industry The approach used is one which has become customary in studies examining issues in this sector related to the system of farming/livestock and which allows us to detect not only the most crucial quantitative but also qualitative aspects that exist and have been established among the various components of the system, with particular reference to the types of productive performance which are determined by the use of different technical patterns, especially those related to improvement and genetic selection. The study's aim was to follow the analytical framework of the supply chain in order to highlight important conditions that contribute to an interpretation of the key economic characteristics for the selective breeding industry under analysis. All this is due to the gradual revelation of the genetic basis of biodiversity by means of genome sequencing. Thanks to genomics, subjects to be used for propagation can be selected in terms of the target characteristics to be achieved, such as greater energy efficiency, resulting in the ability to produce better cattle feed, more resistance to disease, or a reduction in environmental impact by reducing emissions of methane gas. Regarding the methodology adopted, an examination of the context is followed by an evaluation of the most suitable production factors for the enhancement of the cattle population and the article concludes with some suggestions for possible future interventions.

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