Buffer solution for stabilization rumen fermentation

It is very difficult to increase milk production in dairy cattle, without jeopardizing digestive disorder and subsequent animal health. However, sound buffer concepts can support and protect the rumen and intestines. In counteracts the effect of high energy diets that disrupt the healthy functioning of the rumen by buffering the acidification by overproduction of short chain fatty acids. This way, lysis of bacteria by acidification and subsequent release of endotoxins is avoided. As a consequence, intestinal barrier is not weakened and does not result in leaky gut and sepsis. Finally, there is no energy loss towards fortifying the immunity of the animal, resulting in better performance and health.

It is clear that buffers can overcome intestinal disorders in ruminants, while increasing milk production. This way, the performance index of the animal is strongly improved and the financial profit per animal is much better, as witnessed by farmers.

Vaccination of in-calf cows and housing practices against calf scour (Neonatal calf diarrhea)

Calf scour (Neonatal calf diarrhoea) is the most common cause of disease and death in calves during the pre-weaning period. Scour can be due to both infectious (e.g., viruses and bacteria) or non-infectious causes (such as poor nutrition). Symptoms are most often diarrhoea that might be green, yellow or grey in colour, weak animals, dehydrated animal (especially when very young) causing sunken-eyes, etc.

Good hygiene, colostrum provision and biosecurity are important for minimising the chances of an outbreak occurring, independent of the cause of scour. Calves are most at risk from infectious scour in the first 3-4 weeks of life and need a continuous source of protection. In collaboration with their herd veterinarians, farmers can vaccinate in-calf cows against calf diarrhoea a few weeks before calving, while increasing the quantities of colostrum given to the calves at birth. After doing this, cases of diarrhoea in the calves should usually drop.

In addition, it is important to segregate calves by age to prevent passing infectious agents from older calves to younger more vulnerable ones and to maintain clean, dry housing with good ventilation. For example, individual pens (which are easier to clean, transport and disinfect) could be used to rear these calves.

100 Antimicrobials in agriculture and the environment: reducing unnecessary use and waste (Research report; Neil, 2015)

 

 

Significant Impact Group(s): AMU reduction strategies \ Legislation and incentives; Government
Species targeted: Pigs; Poultry; Dairy; Beef; Sheep;
Summary: This report presents focus areas to globally reduce the use of antibiotics in agriculture and the environment:
1. Agree on targets to reduce antibiotic use in food production, to an acceptable level per kilogram of livestock and fish, together with limitations of use of antibiotics that are important for humans.
2. Agree on minimum limits for antibiotic environmental waste, which should be taken into consideration by pharmaceutical companies, healthcare buyers and regulatory agencies everywhere.
3. Improved surveillance at an international level to monitor antimicrobial use and waste, and evaluate progress towards global targets.
Interventions in agriculture that could change antibiotic use include improvements in infection control, better animal husbandry practices, greater use of vaccines and the adoption of diagnostic devices to improve veterinary prescribing practices.
This report also discusses the roles of taxation, subsidies, and regulation in reducing the risks associated with agricultural use of antibiotics and environmental contamination.
This paper proposes three broad interventions to take bold global action to substantially reduce the use of antibiotics in agriculture and the quantities being dispersed into the environment:
1. A global target to reduce antibiotic use in food production to an agreed level per kilogram of livestock and fish, along with restrictions on the use of antibiotics important for humans.
a. We need to reduce global levels of antibiotic use in agriculture, to an agreed limit for each country, but it should be for individual countries to decide how best to achieve this goal – a global target would make this possible. We believe an ambitious but achievable target for reducing antibiotic use in agriculture is needed, to reduce use over the next 10 years. There are countries that have advanced farming systems with very low levels of antibiotic use, particularly in Scandinavia. Denmark has combined low use with being one of the largest exporters of pork in the world. Reducing levels of use to that of Denmark for example, an average of less than 50 milligram (mg) of antibiotics used a year per kilogram (kg) of livestock in the country, may be a good starting point for such a target. We think this would be feasible without harming the health of animals or the long-term productivity of farmers. This is based on our understanding of academic literature and case studies. The exact level of a target would, however, need to be discussed and tested by experts. Low and middle-income countries may need more time to achieve such a target, while many of these countries may already be below the threshold.
b. As well as reducing the quantity of use, the types of antibiotics used are also important. Currently many antibiotics that are important for humans are used in animals. We believe that countries need to come together and agree to restrict, or even ban, the use of antibiotics in animals that are important for humans.
2. The rapid development of minimum standards to reduce antimicrobial manufacturing waste released into the environment. This needs to be viewed as a straightforward issue of industrial pollution, and it is the responsibility of all actors in the supply chain to ensure that industrial waste is treated properly as a matter of good manufacturing practice. The risk of drug resistance must urgently become a key environmental consideration for all pharmaceutical companies, healthcare buyers and regulatory agencies everywhere. Failing to do this does most harm to the health of populations living near the manufacturing sites who are exposed to polluted water, and are in a way are paying the price of cheap antibiotics for the rest of the world. But in the long-term, we know that resistance spreads and these strains will in time likely become a global problem.
3. Improved surveillance to monitor these problems, and progress against global targets. There remain too many knowledge gaps regarding patterns of antimicrobial use in agriculture and release during manufacturing, and what this means for resistance and, ultimately, human health. This needs to change if meaningful progress is to be made.
As with the human health aspects of AMR, these are complex issues that require concerted, coordinated action at an international level. Drug-resistant infections know no borders and do not respect barriers between industry, regulators and buyers, or between animals, humans and their wider environment. There are encouraging signs of some governments adopting a broad ‘one health’ approach to tackling the issue of resistance, but it is an approach that needs to be replicated by others. We believe that success can only be achieved by considering a full range of interventions:
• In agriculture, these should take into account the key drivers of the real or perceived need for antibiotics, whether for use as therapy, prophylaxis (prevention), or growth promotion. Interventions will no doubt include improvements in infection control, better animal husbandry practices
100 Research report – Neill – 2015 – Antimicrobials in agriculture and the environment_ reducing unnecessary use and waste
Where to find the original material:
https://amr-review.org/Publications.html;
Country: UK

100 Research report – Neill – 2015 – Antimicrobials in agriculture and the environment_ reducing unnecessary use and waste

93 Guidance notes 2013 by IDF (Farm Innovation)

 

 

Significant Impact Group(s): AMU reduction strategies
Species targeted: Dairy;
Age: Adult;
Summary: This guide describes prudent use of antimicrobial agents in dairy production. It contains a chapter with definitions of used terminology, complemented with descriptions of ‘Good practices’ for dairy farmers, veterinarians, food processing companies, pharmaceutical companies and competent authorities. It also includes fact sheets for above mentioned sectors.
The focus of this comprehensive publication is on desired outcomes rather than on specific prescriptive actions or processes. It provides examples of recommended practices for all participants.
A factsheet for example includes principles like:
– Have an effective herd health management program in place, by using an identification system that allows all animals to be identified individually from birth to death + Keep written records of all treatment and identify treated animals appropriately
– Use all antimicrobial agents as directed, by only using veterinary medicines as prescribed by veterinarians
93 Farm Innovation – Guidance notes 2013 by IDF
Where to find the original material: (in English)
https://store.fil-idf.org/product/guide-to-prudent-use-of-antimicrobial-agents-in-dairy-production-in-english-3/;
Country: UK

93 Farm Innovation – Guidance notes 2013 by IDF

92 Guidance notes by IDF 2017 (Farm Innovation)

 

 

Significant Impact Group(s): AMU reduction strategies
Species targeted: Dairy;
Age: Adult;
Summary: This factsheet describes what antimicrobial resistance (AMR) is, outlines dairy sector guidance on prudent use of antimicrobials and defines the global dairy position on AMR. Topics that are discussed vary from guidelines for prudent use for dairy farmers, veterinary services, food processing and pharmaceutical company’s and regulators. Guideluines for dairy farmers are, for example:
– Set up biosecurity measures to prevent introduction of diseases and resistant bacteria onto the farm
– Implement a management programma for chronically infected cows
– Implement an effective herd health management programme
– Avoid feeding milk-containing residues to calves or other animals on the farm
– Ensure that withdrawel times set for the antimicrobials are respected before the milk from treated animals is used, supported by strategic residue testing of milk
92 Farm Innovation – Guidance notes by IDF
Where to find the original material: (in English)
https://www.fil-idf.org/wp-content/uploads/2017/05/Factsheet-003_2017-Guidance-on-Antimicrobial-Resistance-from-the-Dairy-Sector.pdf;
Country: UK

92 Farm Innovation – Guidance notes by IDF

90 Calf reception by LTO calf group (Industry Innovation)

 

 

Significant Impact Group(s): Housing and welfare \ Weaning age and management ; Pathogen management
Species targeted: Dairy;
Age: Young;
Outcome Parameter(s): lower antibiotic use; lower mortality; improved animal welfare; improved animal health; better technical results
Summary: With the ‘Calf Reception’ project, the veal calf sector (initiator is the Branch Organization for the Calf Sector (SBK)) wants to improve the reception of newborn calves on the veal calf farm. The project focuses on the management of the veal farmer during the first four weeks, including the release of the calves in groups. During this period, improvements in management can lead to lower antibiotic use and loss, better animal welfare and health, more job satisfaction and better technical results. The main target group of the project are the 1,300 veal veal farmers in the Netherlands. Group meetings and workshops are organized, but individual conversations with veal farmers and advisers are also possible. Aspects that will be discussed include a clean barn, clean feeding troughs and teats, temperature in the barn on arrival, CO2 and humidity, feeding milk.
90 Industry Innovation – Ontvangst Kalveren by LTO calf group
Where to find the original material: (in Dutch)
https://www.nieuweoogst.nl/nieuws/2019/03/28/vleeskalversector-start-nieuw-project;
Country: NL

90 Industry Innovation – Ontvangst Kalveren by LTO calf group

89 KalfOK by ZuivelNL (Industry Innovation)

 

 

Significant Impact Group(s): AMU reduction strategies \ Monitoring and surveillance \ Disease/health ; Pathogen management
Species targeted: Dairy;
Age: Young;
Outcome Parameter(s): use of antibiotics; health status
Summary: CalfOK provides insight into the rearing of all calves born on the dairy farm. It stimulates to improve the health and welfare of calves. Since 2018, every dairy farmer can request the CalfOK score of his company, if the necessary authorizations have been issued via his dairy company. Figures from MediRund, I&R, Rendac and Qlip come together, from which the key figures arise. Dairy companies promote the use of KalfOK through quality and sustainability programs. CalfOK is composed of data on births and rearing, the use of antibiotics in calves and the company health status. In total there are 12 key figures each company can score a maximum of 100 points. The result provides insight into the quality of calf rearing at the individual dairy farm, and also makes a comparison with other companies possible. Dairy farmers are required to view the CalfOK score to issue authorizations through their dairy company.
89 Industry Innovation – KalfOK by ZuivelNL
Where to find the original material: (in Dutch)
https://www.nieuweoogst.nl/nieuws/2018/12/28/kalfok-begint-te-leven-bij-veehouders;
Country: NL

89 Industry Innovation – KalfOK by ZuivelNL

87 Biosensors for on-farm diagnosis of mastitis (Research paper, Martins, 2019)

 

 

Significant Impact Group(s): Precision Livestock Farming & Early detection \ Sensor technology ; Pathogen management
Species targeted: Dairy; Age: Adult;
Outcome Parameter(s): Mastitis indicative markers

Summary: Bovine mastitis is an inflammation of the mammary gland caused by a large number of infectious agents with devastating consequences for the dairy industry. Management of mastitis usually means using antibiotics to treat and prevent the disease, which can be problematic because of increased antimicrobial resistance. Typical diagnostic methods are based on somatic cell counts (SCC) and plate-culture techniques. But these methods are not quick and there is quite a lot of interest in making faster solutions that could provide onsite information, which would speed up the choice of treatment.

Biosensors are tools that can convert the presence of biological particles into an electric signal. Together with microfluidics, biosensors can be used in the development of automated and portable diagnostic devices. This review describes current approaches for mastitis diagnosis and the latest outcomes in biosensors and lab-on-chip devices with the potential to become real alternatives to standard practices.

Research paper: Martins – 2019 – Biosensors for on-farm diagnosis of mastitis – https://doi.org/10.3389/fbioe.2019.00186
Where to find the original material (in English):
https://www.frontiersin.org/articles/10.3389/fbioe.2019.00186/full;

Country: Portugal
Tags: dairy, mastitis, diagnositcs

87 Research paper – Martins – 2019 – Biosensors for on-farm diagnosis of mastitis

86 Methicillin-Resistant Staphylococcus aureus Strains in Swiss Pigs and Their Relation to Isolates from Farmers and Veterinarians (Research paper; Kittl, 2020)

 

 

Significant Impact Group(s): Pathogen management
Species targeted: Pigs; Poultry; Dairy; Beef; Sheep;
Age: Different for different species;
Outcome Parameter(s): MRSA prevalence in livestock at the slaughterhouse; MRSA prevalence in meat at retail outlets; Prevalence in veterinarians and farmers
Summary: Methicillin-resistant Staphylococcus aureus (MRSA) can lead to serious disease in humans, and since this bacteria is often found in livestock can have potentially large impact on public health. Farmers and veterinarians are especially at risk due to their close contact with animals. Our work demonstrates a dramatic increase in MRSA prevalence in Swiss pigs, from 2% in 2009 to 44% in 2017. Sequencing of the bacterial genes allowed us to show a close association between farmer and pig strains as well as veterinarian and horse strains, indicating that pigs and horses are a likely to be a source of human colonization. In this study it was also shown pig spa t011 strains are probably less likely to colonize humans than are pig spa t034 strains. This research may provide a basis for a more accurate risk assessment and preventive measures.
86 Research paper – Kittl – 2020 – Methicillin-Resistant Staphylococcus aureus Strains in Swiss Pigs and Their Relation to Isolates from Farmers and Veterinarians
Where to find the original material:
https://aem.asm.org/content/86/5/e01865-19.abstract; https://doi.org/10.1128/AEM.01865-19
Country: CH

86 Research paper – Kittl – 2020 – Methicillin-Resistant Staphylococcus aureus Strains in Swiss Pigs and Their Relation to Isolates from Farmers and Veterinarians

84 A longitudinal field trial assessing the impact of feeding waste milk containing antibiotic residues on the prevalence of ESBL-producing Escherichia coli in calves (Research paper, Brunton, 2014)

 

 

Significant Impact Group(s): Pathogen management ; Feed / gut health
Species targeted: Dairy;
Age: Young;
Outcome Parameter(s): calf health; proportion of calves shedding CTX-M-positive E. coli
Summary: A field trial was done on a farm known to have resistant Escherichia coli, in order to understand if feeding calves with waste milk with antibiotic residues (WM + AR ) could lead to detecting more resistant bacteria in the faeces of calves. The findings of this study indicate that feeding waste milk with antibiotic residues on this farm increases the amount of resistant bacteria shed in the faeces. Resistant E. coli persists for longer after weaning in calves fed WM+AR. These findings are applicable to the situation observed on this farm, but may differ on other farms depending on contents of the waste milk or level of contamination in the farm. Still, antibiotics used on this farm were are commonly used in dairy farms in in England and Wales, so results shown can give an idea of what to expect in those types of farms.
84 Research paper – Brunton – 2014 – A longitudinal field trial assessing the impact of feeding waste milk containing antibiotic residues on the prevalence of ESBL-producing Escherichia coli in calves
Where to find the original material:
https://www.sciencedirect.com/science/article/pii/S0167587714002578; https://doi.org/10.1016/j.prevetmed.2014.08.005
Country: UK

84 Research paper – Brunton – 2014 – A longitudinal field trial assessing the impact of feeding waste milk containing antibiotic residues on the prevalence of ESBL-producing Escherichia coli in calves