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

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.

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

Antibiotics ◽  
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.

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

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.

Animal health : present and future

1977 ◽  
Vol 281 (980) ◽  
pp. 181-191
Keyword(s):  
Disease Surveillance ◽  
High Performance ◽  
Large Scale ◽  
Animal Health ◽  
Genetic Selection ◽  
New Production ◽  
Financial Investment ◽  
Veterinary Surgeons ◽  
Acceptable Quality ◽  
High Standards

The importance of the health of farm livestock is considered in relation to the need to economically produce enough human food of an acceptable quality. The control and eradication of important diseases is discussed. Success in this work has allowed the development of high performance breeds by genetic selection. It has also encouraged the development of large scale units and intensive husbandry techniques. These new production methods require high standards of management from all concerned, and represent considerable financial investment. Biochemists, geneticists, physiologists, veterinary surgeons, all have a part to play in the modern livestock industry. The work of the State Veterinary Service is seen as catalytic. The possible development of a disease surveillance unit is discussed, also the type of information required by both veterinary surgeons and farmers.

169 Comparison of pregnancy outcomes in dairy heifers artificially inseminated with sexed semen deposited in the uterine horns versus the uterine body

2020 ◽  
Vol 32 (2) ◽  
pp. 211
Author(s):  
S. Kirks ◽  
R. Palomares ◽  
P. Melendez ◽  
M. Ferrer ◽  
A. Hoyos ◽  
...  
Keyword(s):  
Cell Damage ◽  
Animal Health ◽  
Genetic Selection ◽  
Prostaglandin F2α ◽  
Freezing Process ◽  
Dairy Heifers ◽  
Normal Ranges ◽  
Sexed Semen ◽  
On Farm ◽  
Uterine Body

The use of sexed semen (SS) for AI of cattle has resulted in lower pregnancy per timed AI (P/TAI) compared with conventional semen. This has been attributed to lower sperm dose and cell damage during the cell sorting-freezing process. Horn AI is a common practice in equines and canines to improve pregnancy rate when using low sperm doses. The objective was to compare P/TAI and pregnancy loss (PL) in dairy heifers inseminated with SS deposited in the uterine horn (UH) ipsilateral to the ovary containing the preovulatory follicle (POF) versus TAI in the uterine body (UB). This study was performed on two dairy farms in Georgia (A and B). On farm A, 74 Holstein heifers (12 months old) received a 5-day Cosynch + controlled internal drug release (CIDR) protocol including an intravaginal insert (Eazi-Breed CIDR, Zoetis Animal Health) containing 1.38g of progesterone for 5 days and a dose of gonadotrophin-releasing hormone (GnRH) intramuscularly (100µg, 2mL of Factrel, Zoetis Animal Health). At CIDR removal, heifers received a dose of prostaglandin F2α (PGF2α) intramuscularly (25mg, 5mL of Lutalyse, Zoetis Animal Health) and again 24h later; 72h after CIDR removal, heifers received 100µg of GnRH intramuscularly and TAI with frozen-thawed SS. On farm B, 237 Holstein×Jersey heifers (12 months old) received a modified 5-day Cosynch + CIDR. This protocol was similar to that on farm A but did not include GnRH at the time of CIDR insertion or a second dose of PGF2α 24h after CIDR removal. Immediately before TAI, heifers were examined using transrectal ultrasonography (TRUS) to determine on which ovary the POF was present. Each heifer was randomly assigned to TAI using SS in either the UH ipsilateral to the ovary containing the POF (n=150; farm A, n=32; farm B, n=118) or the UB regardless of where the POF was identified (n=161; farm A, n=42; farm B, n=119). Pregnancy was diagnosed 32 days after TAI using TRUS to determine P/TAI. Heifers diagnosed pregnant were re-examined using TRUS at 60 days of gestation to assess PL. Data were analysed using PROC LOGISTIC and the chi-square test of SAS (SAS Institute Inc.). Heifers that received SS in the UH had adequate P/TAI (50.6% (76/150); farm A: 50.0% (16/32); farm B: 50.8% (60/118)), which tended to be numerically greater (P=0.12) than that observed in heifers receiving SS in the UB (43.4% (70/161); farm A: 40.5% (17/42); farm B: 44.5% (53/119)). In addition, PL was not different between groups and was within normal ranges for dairy heifers (10.0 and 9.4% for UH and UB, respectively). In conclusion, TAI of dairy heifers with SS deposited in the UH ipsilateral to the ovary containing the POF resulted in adequate P/TAI, which was 7.2% greater than TAI in the UB. Horn AI with SS might become a valuable tool for optimising reproductive efficiency and genetic selection of dairy herds.

scholarly journals Mapping QTL Associated with Resistance to Avian Oncogenic Marek’s Disease Virus (MDV) Reveals Major Candidate Genes and Variants

Genes ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 1019
Author(s):  
Jacqueline Smith ◽  
Ehud Lipkin ◽  
Morris Soller ◽  
Janet E. Fulton ◽  
David W. Burt
Keyword(s):  
Candidate Genes ◽  
Disease Virus ◽  
Genome Wide Association Study ◽  
Animal Health ◽  
Genetic Selection ◽  
Marek's Disease Virus ◽  
Marek's Disease ◽  
Marek’S Disease Virus ◽  
Marek’S Disease ◽  
Pure Lines

Marek’s disease (MD) represents a significant global economic and animal welfare issue. Marek’s disease virus (MDV) is a highly contagious oncogenic and highly immune-suppressive α-herpes virus, which infects chickens, causing neurological effects and tumour formation. Though partially controlled by vaccination, MD continues to have a profound impact on animal health and on the poultry industry. Genetic selection provides an alternative and complementary method to vaccination. However, even after years of study, the genetic mechanisms underlying resistance to MDV remain poorly understood. The Major Histocompatability Complex (MHC) is known to play a role in disease resistance, along with a handful of other non-MHC genes. In this study, one of the largest to date, we used a multi-facetted approach to identify quantitative trait locus regions (QTLR) influencing resistance to MDV, including an F6 population from a full-sib advanced intercross line (FSIL) between two elite commercial layer lines differing in resistance to MDV, RNA-seq information from virus challenged chicks, and genome wide association study (GWAS) from multiple commercial lines. Candidate genomic elements residing in the QTLR were further tested for association with offspring mortality in the face of MDV challenge in eight pure lines of elite egg-layer birds. Thirty-eight QTLR were found on 19 chicken chromosomes. Candidate genes, microRNAs, long non-coding RNAs and potentially functional mutations were identified in these regions. Association tests were carried out in 26 of the QTLR, using eight pure lines of elite egg-layer birds. Numerous candidate genomic elements were strongly associated with MD resistance. Genomic regions significantly associated with resistance to MDV were mapped and candidate genes identified. Various QTLR elements were shown to have a strong genetic association with resistance. These results provide a large number of significant targets for mitigating the effects of MDV infection on both poultry health and the economy, whether by means of selective breeding, improved vaccine design, or gene-editing technologies.

Needs and Challenges Cattle Producers Face in Adapting Preconditioning Programs

2021 ◽  
Vol 99 (Supplement_2) ◽  
pp. 6-6
Author(s):  
Paul Beck ◽  
Jeff Robe ◽  
David Lalman ◽  
Dana Zook ◽  
Marty New ◽  
...  
Keyword(s):  
Management Practices ◽  
Participation Rate ◽  
Economic Benefits ◽  
Morbidity Rate ◽  
Cattle Industry ◽  
Online Sales ◽  
Use Of Technology ◽  
Maximum Benefit ◽  
To Receive ◽  
Postal Mail

Abstract Identifying the producer’s needs and challenges is the first step to understanding what types of programs will benefit producers the greatest. In the cattle industry, participation in calf preconditioning programs have slowly increased over the last two decades as more sellers and buyers recognize the economic benefits. However, for a seller to receive maximum benefit when marketing their cattle requires planning and an understanding of the components that go into a preconditioning program. Surveys are a practical way to gain useful information to develop programming to educate on developing preconditioning protocols that best fits their operation. Following the 2019 Oklahoma Quality Beef Network (OQBN) VAC45 fall certified sales, a survey was distributed electronically and by postal mail to participating cattle producers. The survey examined a number of aspects associated with preconditioning calves, management practices, operation size, demographics, and obstacles producers face when preconditioning calves. Participation rate was approximately 56% out of the 126 OQBN producers surveyed. Of the respondents, 52% did so electronically. Program ear tags moved to online sales in 2019 and 98% of respondents found ordering online convenient. These results would indicate that the use of technology is an increasing component in the cattle industry by producers and leading the way to the development of more tech related tools. Smaller operations marketing 50 or fewer head (72%) are utilizing preconditioning programs the greatest. Still, the biggest challenge reported by producers preconditioning calves was the expense (59%) associated followed by availability of labor (22%) and facilities (13.5%). Thirty-two percent of respondents indicated 5% or less morbidity rate, and 13% of respondents experienced 10% or less mortality rate. Thirty-three percent of producers estimated 1lb. or less ADG. Developing resources concerning the costliest components of preconditioning may be most crucial and beneficial to the producer to achieve a successful program.

scholarly journals Cases of Reproduction Disorder in Beef Cattle of Modo District, Lamongan in 2015

2017 ◽  
Vol 3 (6) ◽  
pp. 727
Author(s):  
Azharuddin Anshoria ◽  
Tri Nurhajati ◽  
Budi Utomo
Keyword(s):  
Beef Cattle ◽  
Animal Health ◽  
Regression Tree ◽  
Secondary Data ◽  
Primary Data ◽  
Survey Method ◽  
Reproductive Disorders ◽  
Field Surveys ◽  
Cattle Feed ◽  
Materials Used

The aim of this research is to discover how several factors – namely feed, age, and parity might contribute toward cases of reproduction disorder in beef cattle of Modo District, Lamongan in 2015. Materials used in this research are data obtained from five villages, showing 340 out of 3.331 animals exhibiting reproduction disorder symptoms. The method used for this research is the survey method, and primary and secondary data were obtained. Primary data were obtained from field surveys of interviewing farmers, local animal health officials and artificial inseminators. Secondary data were obtained from examination for reproduction disorder in beef cattle by the Livestock and Animal Health Service of Lamongan. The data obtained were then tabulated and analyzed with the regression tree method using Windows Statistical Product and Service (SPSS) to determine the main cause of reproduction disorder in beef cattle of Modo District, Lamongan in 2015. The results show that feed is the main factor contributing to reproduction disorder in beef cattle of Modo District, Lamongan, while age and parity showed a less significant role. Key words: Beef cattle, feed, age, parity, reproductive disorders

scholarly journals Methane Emissions from Ruminants in Australia: Mitigation Potential and Applicability of Mitigation Strategies

Animals ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 951
Author(s):  
John L. Black ◽  
Thomas M. Davison ◽  
Ilona Box
Keyword(s):  
Carbon Dioxide ◽  
Best Management Practices ◽  
Atmospheric Carbon Dioxide ◽  
Management Practices ◽  
Animal Health ◽  
Genetic Selection ◽  
Methane Emissions ◽  
Mitigation Strategies ◽  
Mitigation Potential ◽  
Methane Mitigation

Anthropomorphic greenhouse gases are raising the temperature of the earth and threatening ecosystems. Since 1950 atmospheric carbon dioxide has increased 28%, while methane has increased 70%. Methane, over the first 20 years after release, has 80-times more warming potential as a greenhouse gas than carbon dioxide. Enteric methane from microbial fermentation of plant material by ruminants contributes 30% of methane released into the atmosphere, which is more than any other single source. Numerous strategies were reviewed to quantify their methane mitigation potential, their impact on animal productivity and their likelihood of adoption. The supplements, 3-nitrooxypropanol and the seaweed, Asparagopsis, reduced methane emissions by 40+% and 90%, respectively, with increases in animal productivity and small effects on animal health or product quality. Manipulation of the rumen microbial population can potentially provide intergenerational reduction in methane emissions, if treated animals remain isolated. Genetic selection, vaccination, grape marc, nitrate or biochar reduced methane emissions by 10% or less. Best management practices and cattle browsing legumes, Desmanthus or Leucaena species, result in small levels of methane mitigation and improved animal productivity. Feeding large amounts daily of ground wheat reduced methane emissions by around 35% in dairy cows but was not sustained over time.

scholarly journals Effect of anaerobic bovine colostrum fermentation on bacteria growth inhibition

2016 ◽  
Vol 46 (12) ◽  
pp. 2152-2157 ◽  
Author(s):  
Mara Helena Saalfeld ◽  
Daniela Isabel Brayer Pereira ◽  
Júlia de Souza Silveira Valente ◽  
Jéssica Lopes Borchardt ◽  
Christiano Fanck Weissheimer ◽  
...  
Keyword(s):  
Disease Transmission ◽  
Salmonella Enteritidis ◽  
Anaerobic Fermentation ◽  
Animal Health ◽  
Dairy Farm ◽  
Bovine Colostrum ◽  
Cattle Industry ◽  
Bacteria Growth ◽  
E Coli ◽  
Milk Substitutes

ABSTRACT: Efficient handling programs that provide high quality colostrum in adequate amounts to dairy farm calves are needed to assure their health and survival. Replacers (or milk substitutes) often become necessary when colostrum presents inadequate quality, or in order to break the cycle of infectious disease transmission. In this study we aimed to assess the effect of anaerobic fermentation processing (colostrum silage) on bacterial that represent interest to animal health. Colostrum samples were inoculated with cultures of Brucella abortus , Escherichia coli , Leptospira interrogans serovar Copenhageni , Mycobacterium bovis , Salmonella Enteritidis , Salmonella Typhimurium , Staphylococcus aureus , and Bacillus cereus and then subjected to anaerobic fermentation. On the first day, and every seven days until 30th days after fermentation, the samples were cultured and colony forming units counted. At seven days of fermentation, B. abortus , L. interrogans , and M. bovis were not detected. At 14th days of fermentation, E. coli , S. aureus , S. Enteritidis and S. Typhimurium were no longer detected. However, we were able to detect both lactic acid bacteria and B. cereus until 30th days of fermentation. From this study we suggested that anaerobic fermentation processing can inhibit important bacteria that cause economical losses for the cattle industry. The observations suggested that colostrum silage is a promising form to conserve bovine colostrum.

scholarly journals Exploring the geographical distribution of cryptosporidiosis in the cattle population of Southern Ontario, Canada, 2011-2014

2019 ◽  
Vol 14 (2) ◽  
Author(s):  
Andrea Nwosu ◽  
Olaf Berke ◽  
David L. Pearl ◽  
Lise A. Trotz-Williams
Keyword(s):  
Animal Health ◽  
Laboratory Data ◽  
Dairy Industry ◽  
Cattle Industry ◽  
Veterinary Clinic ◽  
Southern Ontario ◽  
Increased Risk ◽  
Spatial Scan ◽  
Potential Impact ◽  
The University

Cryptosporidiosis is an infectious disease of relevance to the cattle industry. The southern region of the Canadian province of Ontario is characterised by widespread cattle farming that is a key contributor to the Canadian dairy industry. Given Ontario’s key role in the Canadian dairy industry and the potential impact that cryptosporidiosis can have on cattle operations, identifying areas of increased risk for bovine cryptosporidiosis is important. The primary goal of this study was to explore the distribution of bovine cryptosporidiosis, across the geographical areas served by the 29 Public Health Units (PHUs) of Southern Ontario, in the period 2011-2014. Laboratory data on bovine cryptosporidiosis were collected from the Animal Health Laboratory at the University of Guelph, Canada. Using veterinary clinic locations as a proxy for farm location, choropleth and isopleth maps were produced. Highrisk clusters of bovine cryptosporidiosis were identified using the flexible spatial scan test. Assessment of the potential for spatial misclassification bias resulting from a proxy location variable was conducted. The overall raw farm-level prevalence of bovine cryptosporidiosis was 45% [95% confidence interval, CI: 42%-48%]. A cluster was identified in the central-west region of Southern Ontario (relative risk 1.30 [95% CI: 1.07-1.54, P=0.026]) meaning that cattle in the areas served by the Bruce-Grey-Owen Sound, Huron, Wellington-Dufferin Guelph and Waterloo PHUs were at a higher risk for infection. Given that this area is known for having a high-density of dairy cattle, it should be considered as a target for further surveillance.

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