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Trusted Nutrition for Research Animals, Backed by Decades of Expertise

Bio-Serv has served the research community for over 50 years, and W.F. Fisher and Son has been its premier distributor in the tri-state area for more than 20! The Bio-Serv team of lab animal nutrition and animal welfare experts understands the requirements of caring for research animals and is dedicated to manufacturing the best feed for your animals.

Standard Research Diets

Bio-Serv produces a wide range of routinely manufactured diets supported by scientific literature. These include:


  • AIN Diets (AIN-76A, AIN-93G, AIN-93M)
  • Atherosclerotic diets
  • Chlorophyll-free diets
  • DOX diets
  • Grain-based controls
  • High-fat / diabetogenic diets
  • Ketogenic diets
  • Liquid diets
  • Phytoestrogen-free diets
  • Post-operative recovery diets
  • SCID diets


Available Diet Forms

  • Dough: Soft, cookie dough consistency
  • Gel: Firm but moist diet that is both a food and water source
  • Liquid: Diet that is suspendable in ethanol or water
  • Pellet: Cold-pressed pellets protect nutrients from air, light and moisture
  • Powder: Used for incorporating compounds at research site
  • Precision Pellets: Precise weight round pellets in sizes 14 mg – 1 g
  • Precision Tablets: Precise weight flat tablets in sizes 3 g – 10 g

Custom Diets

Bio-Serv develops diets tailored to the specific needs of each study. It can replicate previously published formulations, modify existing Bio-Serv formulas, or create entirely new diets based on detailed customer specifications. This service supports studies that require controlled nutrient levels, behavioral feeding considerations or highly targeted nutritional variables.

Customer-Supplied Additives

Bio-Serv can incorporate customer-provided compounds directly into the diet, allowing seamless dosing of medications, nutraceuticals, food ingredients or experimental test articles. This approach ensures accurate and consistent delivery of compounds throughout the study.

Grain-Based Diets

Formulated from agricultural ingredients such as whole grains, high-gluten meals and livestock-grade feed components, grain-based diets provide naturally complex nutrient profiles. These diets are ideal for general research or studies where multi-nutrient variability resembles real-world feeding conditions.

Purified Diets

Bio-Serv’s purified diets use refined ingredients, each contributing primarily a single nutrient. This allows for fine control over macronutrient and micronutrient composition, making them well suited for metabolic, endocrine, gastrointestinal, toxicology and nutritional research where precision is essential.

Custom diets

Standard Research Diets

Bio-Serv produces a wide range of routinely manufactured diets supported by scientific literature. These include:


  • AIN Diets (AIN-76A, AIN-93G, AIN-93M)
  • Atherosclerotic diets
  • Chlorophyll-free diets
  • DOX diets
  • Grain-based controls
  • High-fat / diabetogenic diets
  • Ketogenic diets
  • Liquid diets
  • Phytoestrogen-free diets
  • Post-operative recovery diets
  • SCID diets


Available Diet Forms

  • Dough: Soft, cookie dough consistency
  • Gel: Firm but moist diet that is both a food and water source
  • Liquid: Diet that is suspendable in ethanol or water
  • Pellet: Cold-pressed pellets protect nutrients from air, light and moisture
  • Powder: Used for incorporating compounds at research site
  • Precision Pellets: Precise weight round pellets in sizes 14 mg – 1 g
  • Precision Tablets: Precise weight flat tablets in sizes 3 g – 10 g

Custom Diets

Bio-Serv develops diets tailored to the specific needs of each study. It can replicate previously published formulations, modify existing Bio-Serv formulas, or create entirely new diets based on detailed customer specifications. This service supports studies that require controlled nutrient levels, behavioral feeding considerations, or highly targeted nutritional variables.

Customer-Supplied Additives

Bio-Serv can incorporate customer-provided compounds directly into the diet, allowing seamless dosing of medications, nutraceuticals, food ingredients or experimental test articles. This approach ensures accurate and consistent delivery of compounds throughout the study.

Grain-Based Diets

Formulated from agricultural ingredients such as whole grains, high-gluten meals and livestock-grade feed components, grain-based diets provide naturally complex nutrient profiles. These diets are ideal for general research or studies where multi-nutrient variability resembles real-world feeding conditions.

Purified Diets

Bio-Serv’s purified diets use refined ingredients, each contributing primarily a single nutrient. This allows for fine control over macronutrient and micronutrient composition, making them well suited for metabolic, endocrine, gastrointestinal, toxicology and nutritional research where precision is essential.

Ready to order Bio-Serv diets or have a question? Get in touch!

We will ensure you have the right feed for your animals’ nutritional needs.

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