Monthly Archives: September 2026

Veterinary Contract Manufacturing Company in India

Veterinary Contract Manufacturing Company in India for Quality Products and Reliable Services

Do you want to grow your livestock business without investing a huge amount to develop your own factory? Hiring a certified veterinary contract manufacturing company will help you develop quality animal health products through outsourcing in order to reduce the financial risks to a minimum. For example, the cost of developing an isolated veterinary manufacturing plant in India will range from ₹3 crore to ₹8 crore. The production process will be much more affordable because companies save up to 45% on overheads.

Veterinarian companies will spend money on marketing, distributors, and clinical trials. Working with the certified WHO-GMP and ISO units means strict quality control and compliance, as well as flexibility in batch orders. Thus, the chosen business model will transform regular supply constraints into long-term business earnings through reliable veterinary pharma contract manufacturing.

How Do Veterinary Contract Manufacturing Companies in India Assure Quality of Products?

Apply Rigorous Raw Material Testing

All veterinary contract manufacturing companies in India apply strict raw material testing before production. Hence, the active pharmaceutical ingredients, mineral mixtures, and nutritional additives will have to be purified from any contamination with chemicals. Such a rigorous raw material checking system will prevent batch failures and will guarantee a uniform effect of the therapy.

Use High-Speed Automation Infrastructure

A veterinary contract manufacturing company can provide high-speed liquid filling, bolus pressing, and powder blending equipment. It will help to preserve batch consistency while reducing the risks of human errors in the process of manufacturing on a big scale. The high-speed automation will also guarantee the absence of cross-contamination risks and increased output.

Adhere to Certifications and GMP Standards

A special veterinary contract manufacturing unit works according to the strict standards of WHO-GMP and ISO 9001. This means that every supplement for animals, injections and oral suspension will comply with the necessary regulations and safety measures. Adhering to the standards guarantees compliance with the national veterinary drug regulations.

Perform Stability Testing

Collaborating with leading veterinary contract manufacturing company in India will allow performing thorough stability tests for different climates. Thus, the formulations will preserve their efficacy, potency, and shelf life during the process of distribution. Thermal and humidity tests for a long time will guarantee the preservation of the products during transport and warehouse storage in diverse climates.

Guarantee Sterile Batch Packaging

Contract facilities use advanced blister, strip, and leak-proof bottle packaging. It will guarantee the safety of the animal health products during transportation and long-term warehouse storage. Tamper-evident seals and robust materials will protect liquid feed supplements and boluses from moisture.

What Services Do Veterinary Contract Manufacturing Companies in India Offer?

Service Category In-House Manufacturing Setup Third Party Contract Services
Initial Capital Expenses ₹3 Crore – ₹8 Crore (High Risks) ₹1 Lakh – ₹3 Lakh per batch (Low Risks)
Machinery Maintenance ₹5 Lakh – ₹10 Lakh yearly Minimal (included in fixed unit pricing)
Certifications and Compliance Requires separate WHO-GMP setup Pre-certified WHO-GMP and ISO infrastructure
Batch Order Size Flexibility Large minimum batch order requirements Highly flexible batch sizes
Time-to-Market for the Product 14 to 20 months setup window 30 to 45 days delivery turnaround

How Can Reliable Veterinary Contract Manufacturing Companies Help in Business Growth?

Outsourcing production will help animal health companies to enlarge their portfolios without any delays due to equipment and bottlenecks. Moreover, the businesses will have enough energy for field detailing, veterinary doctor ties, and distributor network expansion in rural areas.

Thus, the livestock companies will be able to achieve fast growth with low operational risks. The use of already established laboratories, formulation chemists, and regulatory documentation will help growing brands to enter competitive markets quickly and grow their net profit.

  • Involvement in veterinary pharma contract manufacturing will help in gaining immediate access to over 500 WHO-GMP-approved animal health formulations without costly initial R&D setup.
  • Growing brands will quickly expand their product catalogs in short 30-day turnaround cycles in order to satisfy the emerging market demand for specialized animal supplements through veterinary contract manufacturing services in India.
  • The companies will be focused exclusively on stockist distribution and veterinary doctor ties, which will increase sales velocity and net profit margins.
  • The experienced contract partners will help with seamless custom labeling, regulatory documentation, box design, and batch approvals for hassle-free product launch.
  • The use of veterinary contract manufacturing services in India will help brands to avoid unexpected raw material price spikes, machinery breakdowns, and inventory holding risks.

Why Choose Abibba Vet for Veterinary Contract Manufacturing in India?

WHO-GMP Certified Infrastructure

Abibba Vet uses advanced production facilities, which are compliant with the international standards of safety and quality. Thus, every bolus, liquid feed, and chelated mineral mixture will have high therapeutic efficacy. They have climate-controlled processing zones, which help to eliminate any environmental contamination during production.

Comprehensive Portfolio in Animal Healthcare

They offer over 300 veterinary products in dairy, poultry, equine, and pet healthcare categories. Thus, growing brands will have access to the comprehensive portfolio of health solutions under the one certified manufacturing roof. The clients can select specialized formulations, including the ones for liver tonics and udder care.

Flexible Batch Size Options

Abibba Vet offers low minimum order quantities starting from just 1,000 units for liquid suspensions or boluses. Thus, emerging startups will test new markets with the lowest financial risks and lower initial capital. Such a flexible scaling system will allow the emerging brands to adjust the volume of production according to the real market demand.

Fast Market Delivery Timelines

Order execution will be completed within a strict 30 to 45-day cycle after the artwork confirmation. It will help to have the consistent stock levels, avoid any interruptions, and keep retailers satisfied. Reliable dispatch schedules will help avoid stock-outs and maintain sales momentum.

Competitive Commercial Rates

Their optimized production will decrease the unit expenses significantly. Thus, they offer liquid calcium formulations starting at ₹120 per liter. Therefore, the veterinary pharma contract manufacturing partners will have an easy way to maximize their net margins. Low-cost raw material sourcing allows Abibba Vet to transfer substantial savings to client companies.

The Bottom Line

Outsourcing production remains the most effective, practical & cost-efficient way to enlarge your presence in the industry of animal healthcare through expert veterinary pharma contract manufacturing. Moreover, companies avoid high machinery costs and focus on distribution network building.

Choosing Abibba Vetcare will give you direct access to WHO-GMP certified units, experienced formulation chemists & low minimum order quantities. Selecting reliable veterinary pharma contract manufacturing options will help to achieve long-term growth, high quality products and sustained profitability.

Frequently Asked Questions

How much initial capital do I need for third party veterinary manufacturing?

It usually requires an initial investment of ₹1 lakh to ₹3 lakh per batch, depending on the type of formulation and packaging.

How long does it take to manufacture a custom veterinary product batch?

The standard delivery time for a batch is about 30-45 days, covering raw material sourcing, formulation, quality testing, and custom packaging.

Is it possible to manufacture veterinary medicine without having a drug license?

It is mandatory to have a valid drug license and Goods and Services Tax (GST) registration to place the manufacturing orders.

Is it possible to customize packaging designs of my veterinary products?

Yes, the manufacturing partners offer customization options for the labeling, bottle shape, blister packaging, etc.

How do contract manufacturers assure batch quality?

Certified facilities perform strict analytical testing of the raw materials and finished products according to WHO-GMP protocol.

Are small batches available for newly launched veterinary startups?

Yes, reliable manufacturers help to manufacture low minimum order quantities, allowing new startups to enter the market with low initial risks.

Who owns the trademark when outsourcing veterinary production through veterinary pharma contract manufacturing?

The client will keep 100% ownership of the brand names, logos, and trademarks, while the manufacturer will be the mere production partner.

What documents are needed to begin contract manufacturing?

You have to provide the following documents: copy of the drug license, GST certificate, non-resemblance certificate, trademark proof, and signed agreement forms.

Why is the northern part of India the major veterinary manufacturing hub?

The northern industrial zones have a rich chemical supply chain, an established logistics network, tax incentives and WHO-GMP-certified facilities.

Does Abibba Vet offer customized veterinary feed formulation?

Yes, Abibba Vet has its in-house technical team, which helps clients with customized nutritional blends, chelated minerals, and feed supplements.

 

Veterinary Monopoly PCD Pharma Company in India

Veterinary Monopoly PCD Pharma Company in India: Complete Franchise Guide

Establishing exclusive commercial rights with a veterinary monopoly company in India helps create highly profitable animal healthcare franchises with total territory protection. Thus, franchisees remove internal competition in the establishment of solid logistics networks in dairy regions and urban pet clinics. Besides, the increasing number of livestock creates constant demand for animal feed supplements, boluses, and therapeutic injections throughout the country.

Meanwhile, opening a specialty Monopoly-based veterinary franchise in India requires an initial investment between ₹15,000 and ₹1.5 lakh. Additionally, cGMP-certified manufacturing premises guarantee compliance of all animal medicine preparations with national quality standards. Thus, partnering with popular animal health brands will bring huge profit margins and commercial success. Therefore, this full guide describes important operational requirements, franchise opportunities, and selection principles.

What Is Veterinary Monopoly PCD Pharma and How It Works?

A veterinary monopoly PCD pharma company provides exclusive territorial distribution rights to one franchise business partner only. Furthermore, such a business model excludes any competitive stockists from selling identical brand products in your assigned territory. Meanwhile, franchise associates get comprehensive marketing support, technical knowledge about products, and logistics assistance.

In this way, distributors create strong connections with local veterinary specialists, commercial dairy managers, and poultry farm owners. Moreover, a transparent wholesale price system allows franchise owners to make a huge profit margin above 40 percent.

  • Territorial distribution rights exclude internal price cutting and brand saturation.
  • Low minimum order quantity minimizes the risks of starting animal medicine franchise for new entrepreneurs.
  • Popular products list includes liquid calcium, chelated mineral mixture, dewormers, and intrauterine boluses.
  • Customized marketing support includes visual aids, reminder cards, product glossary, and samples bags.
  • Centralized dispatch center guarantees fast order delivery to ensure the regular stock at retail points.

What Should You Check Before Choosing a Veterinary Monopoly PCD Pharma Company in India?

  1. WHO-GMP Quality Certification

First, make sure that your selected veterinary monopoly company in India works according to the regulations of WHO-GMP and ISO quality standards. Therefore, certified production facilities produce animal formulations in sterile conditions, thus providing a consistent therapeutic effect in every batch.

  1. Diverse Animal Healthcare Product Range

Second, check that the parent company provides a diverse range of livestock, poultry, and companion animal formulations. Thus, the provision of diverse feed supplements, broad-spectrum antibiotics, and metabolic tonics meets varied veterinary clinic requirements easily.

  1. Exclusive Territorial Monopoly Contract

Meanwhile, review the franchise contract to make sure that the territory monopoly boundaries are clearly stated without any overlapping distribution rights. Thus, holding clear district exclusivity will secure your customer base from unauthorized third-party sellers and secure recurrent income.

  1. Competitive Wholesale Profit Margins

Then, analyze net purchase costs in comparison with maximum retail prices to be sure that profit margins of the distributor exceed 40 percent. Therefore, good financial returns will provide necessary flexibility for setting competitive commercial terms for sub-stockists.

  1. Comprehensive Field Marketing Assistance

Finally, make sure that the supplier provides free promotional materials, visual presentation binders, order books, and physician gifts. In this way, professional marketing inputs accelerate brand acceptance by dairy consultants and practicing veterinarians.

What Advantages Can Veterinary PCD Franchise Partners Receive From Abibba Vetcare?

Collaboration with an already established franchise veterinary monopoly company in India ensures that you have access to genuine animal medicines and professional market promotion services.

Operational Parameter Standard Market Offering Abibba Vet Franchise Offer Financial Estimate (INR)
Monopoly Protection Jointly Owned / Regional Rights Strong District Monopoly Startup Cost: ₹15,000 – ₹50,000
Distributor Margin 20% to 30% Margin 40%+ Margin Annual Return: 35% – 50%
Product Offer Limited Feed Supplements 100+ Injectables, Bolus & Liquids Sample Kit Cost: ₹2,500 – ₹5,000
Marketing Materials Basic Product Brochures Full Visual Binder + Free Gifts Marketing Cost: ₹3,000 / Free
Dispatch Time 7 to 10 Business Days Dispatch Within 24-48 Hours Freight Cost: Flat Regional Charges

Why Choose Abibba Vet for Veterinary Monopoly PCD Pharma Franchise in India?

  1. Certified Cleanroom Formulation Process

First, Abibba Vet manufactures all animal health formulations within a cGMP-compliant manufacturing line, following strict quality protocols. Therefore, all veterinary preparations provide reliable purity and generate high repeat purchase rates in regional dairy farming cooperatives.

  1. High Profit Margin Ratio

Also, our direct franchise model ensures a huge distributor margin exceeding 40 percent on standard inventory orders. Thus, franchise partners maximize net profit margins while providing competitive trade terms for local livestock feed stockists.

  1. Clear Territory Monopoly Protection

Our veterinary monopoly company in India provides a clear legal territory agreement for each approved distributor. Therefore, business owners can develop regional sales channels easily without any internal competition from neighboring stockists.

  1. Market-Oriented Product Selection

Abibba Vet provides unique chelated mineral mixtures, high-potency liver tonics, and concentrated liquid calcium such as ABICAL-Gold and ABILIV-Vet. Thus, distributors solve urgent animal metabolic and nutritional requirements in intensive livestock farming zones.

  1. Effective Regional Supply Chain

Finally, our central logistics center prepares and dispatches the stock orders within 24 to 48 hours. Thus, franchise associates maintain steady product availability and prevent stock-outs in peak seasonal demand periods.

The Bottom Line

Investing in a monopoly-based veterinary franchise in India is a good commercial choice for entrepreneurs who want to create a durable distribution network. Furthermore, partnership with the veterinary monopoly PCD pharma firm guarantees territorial protection and professional marketing support.

Thus, choosing a certified veterinary monopoly company in India will protect your business investment from local market saturation. Abibba Vetcare provides cGMP-certified formulations, high profit margins, and fast order fulfillment to help you to create a strong animal health franchise.

Frequently Asked Questions

What is the minimal investment needed to launch a veterinary PCD franchise?

Entrepreneurs can invest in a veterinary PCD franchise from ₹15,000 to ₹50,000 to start the franchise business.

How do monopoly rights protect pharma distributors from market losses?

An exclusive territory monopoly guarantees the absence of the same brand competitors in your assigned region, providing the security of your profit margin.

What product groups can be found in Abibba Vetcare veterinary catalog?

The catalog includes liquid calcium, chelated mineral mixtures, liver formulations, udder care products, antibiotic boluses, and anthelmintic suspensions.

Is drug license needed to sell veterinary preparations?

Nutritional feed supplements and mineral mixtures do not require a drug license, but selling therapeutic antibiotic injections or boluses requires a valid license.

What marketing materials does Abibba Vetcare provide to franchise associates?

Abibba Vet provides visual presentation aids, product glossary, reminder cards, catch covers, order books, and MR bags.

How quickly are orders normally shipped from the franchise?

It takes 24 to 48 hours for order shipping.

Can franchise associates increase their territory monopoly boundaries later?

Yes, high performing franchise partners can request additional adjoining districts or unassigned territories.

What are expected profit margins for veterinary franchisees?

Franchise associates earn high profit margins from 40% to 50% depending on the volume of orders and local trade.

Are Abibba Vetcare animal health formulations cGMP-certified?

All products are manufactured according to strict cGMP and ISO 9001:2015 standards.

 

Veterinary Antibiotic Manufacturers in India

Veterinary Antibiotic Manufacturers in India 2026: Trusted Suppliers for Animal Healthcare

The animal healthcare sector is thriving owing to the increasing livestock population and requirements of milk, meat, and poultry. Thus, the selection of a reliable  veterinary antibiotic manufacturer is of utmost importance for the distributors, veterinarians, and farm owners who require strong and quick-acting anti-infective medicines. Animal health remedies include broad-spectrum penicillins, cephalosporins, macrolides, and fluoroquinolones. However, setting up a sterile antibiotic manufacturing plant requires huge capital, a cleanroom facility, and statutory approvals.

Thus, partnering with a recognized pharmaceutical manufacturer allows brand owners and franchisees to sell accredited formulations without having to incur costs for maintaining their own factory facilities. Contemporary Indian production plants operate according to the strict WHO-GMP standards and manufacture stable and heat-resistant antibiotics of high potency for cattle, poultry, and pets.

Why Select a Veterinary Antibiotics Manufacturing Company in India?

  • The Indian manufacturers offer high-potency animal formulations at competitive prices.
  • Production plants strictly follow the international WHO-GMP standards.
  • The manufacturers produce broad-spectrum formulations in order to provide a cure for complicated farm infections.
  • The wide network of distribution logistics guarantees uninterrupted supply of products to remote rural locations.
  • Continuous research and development leads to the formulation of stable, climatically resistant, and long-lasting antibiotic medicines.

Top Veterinary Antibiotic Manufacturers in India 2026

Abibba Vetcare

The company produces premium therapeutic preparations in state-of-the-art production plants. They cater to the dairy, poultry, and pet markets in various Indian states. Moreover, their portfolio includes antibiotics such as Ceftriaxone, Amoxicillin, and Oxytetracycline. Working under certified quality guidelines, they provide reliable cures for bacterial diseases. The main advantage of the company is its competitive prices along with the wide distribution network. Working as a trustworthy veterinary antibiotic manufacturer, they provide full marketing assistance to their business partners.

Vetwin Healthcare

Vetwin Healthcare operates advanced manufacturing infrastructure in Chandigarh in order to manufacture specialized veterinary medicines. The company provides such formulations as injectables, boluses, and oral solutions for animal health. Their portfolio includes Enrofloxacin, Tylosin, and Ciprofloxacin treatments. Furthermore, the company possesses WHO-GMP accreditations for safe domestic and export distribution. Advanced R&D and fast logistics are the main commercial strengths of the company. Operating as a premium veterinary antibiotic manufacturer, they offer lucrative monopoly franchise rights in Indian territories.

Amino Pharma

The company develops therapeutic medicines and feed additives for livestock. They cater to the cattle, swine, and poultry markets with innovative drug formulations. The portfolio of the company includes such antibiotics as Oxytetracycline powders, Neomycin liquids, and Doxycycline mixes. Therefore, modern WHO-GMP-certified facilities guarantee their manufacturing processes. The key strength of the company lies in high purity of the raw materials used and rigorous batch testing. Working as a reliable veterinary antibiotic manufacturer, they use durable packaging that guarantees drug stability in various climates.

Ashish Life Science

The company produces premium animal health formulations for the domestic and international markets. The enterprise offers various solutions for livestock, poultry, and companion animals regarding their targeted disease management. The portfolio includes such products as broad-spectrum injectable antibiotics, oral drenching solutions, and therapeutic boluses. ISO and GMP certifications prove their commitment to product excellence. Additionally, the wide network of distribution covering forty countries proves their market leadership. Being a prominent veterinary antibiotic manufacturer, the company focuses on contract manufacturing and private labeling services.

Virbac Animal Health India

The company delivers research-based animal health formulations in livestock, pet, and aquaculture industries. They produce targeted antibacterial treatments in order to provide effective treatment for complex farm infections. The product range of the company includes Ceftiofur, Marbofloxacin, and Penicillin-Streptomycin combinations. Moreover, advanced facilities that comply with international safety protocols manage the company’s manufacturing output. The core strength of the company is its field research and technical support for clinicians. Being a leading veterinary antibiotics manufacturer in India, the company constantly sets new standards for the treatment protocols.

Intas Animal Health

Intas Animal Health dominates the Indian market with advanced diagnostic and medical treatments. They supply various remedies for cattle, sheep, horses, and companion pets. The range of the company includes such products as long-acting Amoxicillin injectables, Gentamicin formulations, and Sulfa-drug combinations. The high-capacity manufacturing plants with WHO-GMP approvals ensure their large output. Furthermore, the massive field team and reliable rural logistics provide their main advantages. Functioning as an established veterinary antibiotics manufacturer in India, the company sets the industry benchmarks for clinical efficacy.

Zydus Animal Health

Zydus Animal Health offers comprehensive biologicals and therapeutic medications for livestock welfare. They cater to dairy farmers, poultry integrators, and pet clinics all over the country. The antibiotic portfolio of the company includes Cefoperazone, Oxytetracycline, and Florfenicol solutions. Operating according to the ISO and WHO-GMP guidelines, they guarantee minimal batch-to-batch variation. Furthermore, academic research collaborations speed up their development process. Being a premium veterinary antibiotic supplier in India, the company offers distributors dedicated sales assistance and training.

Hester Biosciences

Hester Biosciences excels in manufacturing high-potency health products for commercial livestock and poultry. The company provides various preventive and curative drugs targeted at the farm environment. The formulation portfolio of the company includes such products as Enrofloxacin oral drops, Tylosin powders, and Amoxicillin dispersible granules. Modern facilities with ISO certifications ensure strict sanitary protocols. Therefore, the robust cold chain logistics and scientific expertise provide the company with a distinct market edge. Being a key veterinary antibiotic supplier in India, they help to increase farm productivity in a sustainable way.

Indian Immunologicals Limited

Indian Immunologicals Limited provides affordable healthcare formulations in order to protect national livestock resources. They manufacture critical medicines for smallholders, commercial dairies, and government health schemes. The portfolio includes Cefuroxime injections, Ampicillin suspensions, and broad-spectrum antibiotic boluses. Facilities certified by WHO-GMP assure the highest quality of safety and environmental compliance. Additionally, deep distribution reach to the rural districts forms their chief operational strength. Reliable manufacturing process provides cost effective disease control across the entire nation.

Natural Remedies

Natural Remedies combines modern pharmaceutical science with herbal research for balanced animal care. They develop specialized solutions for poultry, cattle, and pet health maintenance. The product range of the company includes such products as herbal potentiated antibiotic blends, anti-infective boluses, and soluble powders. Multiple certifications including ISO and GMP, ensure consistent international product standards. Furthermore, scientifically validated botanical ingredients reduce chemical residue risks significantly. The main strength of the company lies in green manufacturing methods appealing to modern eco-conscious farms. As an innovative veterinary antibiotic manufacturer, they continue to pioneer eco-friendly solutions.

Key Considerations in Choosing a Veterinary Antibiotic Manufacturer

Evaluation Criteria Key Details & Requirements Cost/Value Impact (INR)
Certifications & Compliance Verify WHO-GMP, ISO 9001:2015, and GLP approvals. Prevents up to ₹5 lakh in statutory penalty risks.
Minimum Order Quantities and Scalability Will help assess manufacturing capacity. Bulk orders can help save cost per unit in the range of 10% to 15%.
Availability Supply of boluses, powders, and injectables will have to be ensured. The amount of initial investment would be in the range of ₹1.5 to ₹5 lakh.
Quality Control Quality control tests will be conducted in an internal laboratory. Helps save on recall costs worth ₹20 lakh.
Profit Margins & Terms Evaluate distributor margins, credit, and promotional support. Delivers 20% to 35% profit margin potential.

The Bottom Line

Collaboration with the accredited veterinary antibiotic manufacturer is crucial for creating a successful animal healthcare brand in India. Such an industry leader as Abibba Vetcare provides WHO-GMP certified formulations, a competitive margin structure, and reliable supply networks. By evaluating the quality accreditations, product diversity, and logistics capabilities, distributors can create a highly profitable venture while enhancing livestock health in the nation.

Frequently Asked Questions (FAQs)

How to choose a reliable veterinary medicine supplier?

Check WHO-GMP certificates, the depth of the product catalog, lab test procedures, reputation on the market, and precise territorial franchise conditions before signing any supply contract.

What is the profit margin in veterinary distribution?

The distributors get net profit margins that range from 20% to 35% depending on product category, quantity sold, and market demands in a certain region.

What is the initial investment for the veterinary franchise launch?

Launching the regional franchise needs an initial investment ranging from ₹1.5 lakh to ₹5 lakh to cover inventory stocks, licensing, and promotional materials.

What is the most demanded form of veterinary antibiotics?

Oral boluses, sterile liquid injections, and water-soluble powders are the most demanded forms as they can be easily applied to livestock and poultry.

Can I get the exclusive distribution rights in my city?

Yes, the company offers monopoly distribution rights for specified territories in order to exclude local competitors from selling the identical brands.

How much time will you need to deliver my bulk order of antibiotics?

The delivery time of the standard dispatch order is 7 to 10 working days across India, depending on logistics, transport distance, and availability of the warehouses.

Why do you need to pay attention to antibiotics’ quality in livestock farming?

High-quality antibiotics ensure quick eradication of bacterial infections without any chemical residues in milk or meat, which makes products safe for human consumption.

Does your veterinary manufacturer provide marketing support?

Yes, the parent company provides visual aids, product glossaries, catch covers, sample packages, and promotional gifts to support local doctors detailing.

Are herbal blended veterinary antibiotics gaining popularity in India?

Yes, herbal potentiated formulations are gaining rapid popularity as they reduce the dependency on synthetic chemicals and antimicrobial resistance in farm animals.