Welcome to MIFFLIN AGWAY Feed Store

Quality Feed for Your Livestock

At MIFFLIN AGWAY Feed Store, we understand that your animals need quality feed to stay healthy and happy. That's why we offer a wide variety of feeds for all types of livestock, including horses, cows, pigs, and more.

Pet Food and Supplies

We don't just cater to livestock - we also carry an extensive selection of pet food and supplies for all your furry friends. From dogs and cats to birds and small animals, we have everything you need to keep your pets happy and healthy.

Garden and Lawn Care

In addition to animal feed and pet supplies, we also offer a variety of lawn and garden care products. Whether you're looking for fertilizer, weed killer, or gardening tools, we have everything you need to keep your lawn and garden looking beautiful.

Farm and Ranch Supplies

At MIFFLIN AGWAY Feed Store, we're your one-stop-shop for all your farm and ranch needs. From fencing and gates to water troughs and hay bales, we carry a wide selection of supplies to keep your operation running smoothly.

Expert Advice and Friendly Service

Our staff at MIFFLIN AGWAY Feed Store are experts in all things agriculture and are always happy to offer advice and answer any questions you may have. We pride ourselves on our friendly service and are committed to providing our customers with the best shopping experience possible.

Convenient Online Ordering

Can't make it to our store? No problem! You can now order all your favorite MIFFLIN AGWAY Feed Store products online for convenient home delivery or in-store pickup. It's never been easier to get the feed and supplies you need.

Heat stress in chickens

What is Heat Stress in Chickens?

Heat stress in chickens means that the chicken is too hot. Chickens are naturally warmer than humans, with a healthy body temperature of 105-106 degrees Fahrenheit. They don’t sweat and rely on more passive cooling mechanisms like cool water and shade. Heat-stressed chickens can get sick and stop laying eggs, but more serious cases can be fatal.

What Are the Signs of Heat Stress in Chickens?

Heat stress can affect every part of your chicken’s health and life. Signs of heat stress in chickens include:

Moving less
Fatigue and lethargy
Panting
Elevated wings
Drinking more water
Eating less
Loss of weight
Pale waddle and comb
Reduced egg production
Going limp
Unconsciousness

Heat stress also causes physiological changes in your chickens. Hormone levels change, and chickens become less fertile. Heat stress also changes chickens' acid/base levels and respiration and causes oxidative stress.

Can Heat Stress Affect Egg Production?

Yes, once the ambient temperature reaches 85ºF, egg production will start to drop. This is usually a direct result of dealing with the effects of heat stress. Any time an animal is stressed, reproduction is one of the first physiological functions that she will slow or cease. Since egg production is reproduction, it makes perfect sense that we can see 15-40% reductions in egg production during periods of heat stress. Egg production may cease altogether if hens are dealing with heat stress during sustained heatwaves or periods of very high humidity.

Another common side effect of heat stress is thin eggshells. As a hen pants to dissipate heat, her lungs produce large amounts of CO2, which has a negative effect on the pH of the bloodstream. Due to this pH imbalance, calcium in her bloodstream is bound to other nutrients, directly resulting in less calcium available for eggshell production. This problem can be further exacerbated because feed intake and, thus, calcium intake are usually reduced in hot weather.
Another common culprit that affects egg production in the summer is water quality. Even a short amount of time without potable water can cause a hen to stop laying eggs. Additionally, once the temperature of drinking water exceeds the internal body temperature of the hen (105ºF), she will stop drinking the water because it will heat her body and exacerbate heat stress.

Unfortunately, when a hen is deprived of water for even short periods, the negative effects on egg production can last a long time. Research conducted at Kansas State University in the 1970s showed that hens that go without water for 24-72 hours can take two months to fully recover and return to normal egg production! Even more surprising, it was a full two weeks after the period of water deprivation before egg production reached the lowest level. This means there can be a sustained negative effect on egg production if water is not properly managed during periods of potential heat stress.

What is the Ideal Temperature for Laying Hens?

Poultry cannot sweat and rely on other methods to regulate their temperature. The internal body temperature of a healthy adult chicken is about 105ºF. Chickens will use their breath, the surface area of their body, and even their blood to help regulate their body temperature.

Ideal Temperature Zone: The ideal temperature (thermal neutral zone) for an adult laying hen is 64 to 75ºF. In this temperature range, hens do not need to adjust their metabolism to regulate their body temperature. Below this range, hens will need to generate heat to stay warm. Above this range, hens will need to work to release heat from their bodies.
It’s Getting Uncomfortable: Between 75 and 95ºF, hens will use a variety of methods to help release heat from their bodies and maintain homeostasis. In this temperature range, your hens may be uncomfortable, but their natural bodily functions – panting, vasodilation, gular flutter, etc. – are usually adequate to deal with this stressor for a short period of time. As poultry keepers, we can help our hens cope by providing plenty of shade, good airflow and ventilation, and plenty of clean, cool water.
The Danger Zone: If the temperature inside a chicken’s living quarters reaches 95ºF, a hen’s ability to cool herself becomes limited, and this can quickly result in heat stress. If the ambient temperature meets or exceeds the internal body temperature (105ºF), chickens have no way to cool themselves. This can very quickly lead to an emergency situation for your feathered friends.

How To Treat Chicken Heat Stress

If heat stress becomes extreme and your chicken pants heavily, has a pale waddle or comb, is limp, or is unconscious, treating your chicken’s heat stress immediately is essential.

Submerge the chicken up to the neck in clean, cool (not cold) water, ensuring it can breathe.
Move the chicken somewhere cool where it can recover.
Take steps to prevent future heat exhaustion.

How To Prevent Heat Stress in Chickens

Cool, fresh water: The very best way to help your chickens stay cool is lots and lots of fresh, cool water. During hot summer weather, you can expect your hens to drink 2.5x more water than they would consume if the temperature were in the ideal range (64 to 75ºF). This water is being used to replace the large volume of moisture a hen loses when she is panting. (Water is also required for egg production. A standard Grade A large egg is about 70% water. Your hens need a massive amount of water to maintain proper body temperature and to keep producing eggs!)

Generally, drinking water should be refreshed daily in the summertime and come from a cool, clean source. Hoses, rain barrels, and water catchment systems left in the sun can get very hot. Avoid using water from these sources unless you are absolutely sure the water is cool and clean. Cool, clean water is your best line of defense to help your hens make it through the hottest days of summer!

Shade: Make sure your chickens have access to plenty of well-ventilated, spacious shaded areas.
Airflow/Ventilation: Openings in your chicken coop at ground level make any airflow cooling for your chickens. Outdoor fans are a must for areas without breezes. Place enclosures so they catch any breezes.
Misters: One trick is to use a timer to set your misters for the afternoon when the heat is most extreme.
Ice: Blocks of ice and frozen water bottles will stay cold and keep your chickens cool for several hours.

A HISTORY OF CHICKEN FOODS

1776 (Colonial America) Mostly consisted of anything they could find including table scraps people sometimes gave to them

1800s Free ranged and ate random things they found but were given grains and also some vegetables with less common bits of meat scraps and milk byproduct

early 1900s Commercial feed bags began to be made as farmers supplemented protein with oyster shell for calcium grit for digestion aid and fish meal and meat meal for protein

1940s-1960s Commercial poultry nutrition advanced rapidly with scientists developing balanced feed with measured proteins, vitamins, minerals, amino acids and energy sources

1970s-1990s modern formulated feeds became standard typical ingredients included corn, soybean meal vitamins, minerals, fats, calcium, phosphorus, and enzymes with diets being made for specifically broilers or laying hens

2000s-2026 feeds are highly optimized for age and purpose with common ingredients being corn, soybean meal, wheat, canola meal, sunflower meal, vitamins, minerals, amino acids (such as lysine and methionine), probiotics, enzymes, and sometimes alternative proteins like insect meal or algae with many pasture raised flocks still foraging as well

Browse our Mifflin Mill Made Feeds!

12% Livestock chop

available in 50 and 100 lb

16% Layer Mash

Available in 50 and 100 lb

12% River Racer Horse Feed

12/6/8 textured horse feed based off of Legends Feed and made from completely local ingredients! Always fresh and made here in our mill. Currently $16.99/50lb bulk discount and delivery available.

16% Mifflin Goat

18% Mifflin Goat Grower

50lb and contains black oil sunflower for coat conditioning

18% Mifflin Goat Grower

50 and 100 lb great for dairy and growing goats

Mifflin-Juniata Grass Seed

Looking for a locally sourced Grass Seed without the weeds?

Our custom blend of Mifflin-Juniata Grass Seed was formulated by the Penn State Extension especially for our area! It is celebrated over and over again by our customers and contractors alike as the BEST grass seed around.NO weeds, fillers or junk! We have an all-around blend, Shade Mix, Tuff Turf and Paddock Mix.
Remember - you get what you pay for! Contractor Pricing Available!
Our Juniata Mix and Shade Mix are available to scoop out by the pound ($6.60) if you just have a little barespot to fill in or what have you. 3, 10, 25 and 50# bags, please let us know ahead of time if you will be needing a good amount of seed!

The all around Juniata Mix contains: 50% Perennial Rye, 35% Creeping Red Fescue and 15% Kentucky Bluegrass
Juniata Shade Mix contains: 50% Creeping Red Fescue, 25% Chewing Fescue, 20% Perennial Rye and 5% Kentucky Bluegrass
Paddock Mix #1 Contains: 40% Perennial Rye, 20% Orchardgrass, 20% Kentucky Bluegrass, 10% Timothy, 10% white clove
We also have local baled straw and fertilizer and other grass seeds available.

16% Mifflin Hog Mash

Mifflin Agway has a 16% Hog Grower Mash in 50lb bags always on hand! $16.40 **Join the Feed Club for $5off your bill after your 10th bag! Give our Mifflin Hog feed a try and see (and taste!) a difference in your pigs come butchering time. (also great for pot belly and other pet pigs) Our Mash is made fresh, here in our mill - have peace of mind knowing where and when your feed is made!

Did you know that piglets fed a meal or mash feed have a less chance of developing SCOURS as opposed to those fed a pelleted feed? Pigs also have a higher risk of choke when eating a dry pellet. If you have an animal suffering from scours, a mash may help.

Our 16% Hog Mash is a simple but time proven recipe of locally grown shelled corn and bean meal along with our own swine supplement! Our Swine Supplement is also sold in 100lb bags and contains all the vitamins and minerals a growing hog needs to be healthy and happy.

We also do not change our formulas out for cheaper ingredients. You and your animals can count on us for the same feed, every time!

COAST OF MAINE AND ESPOMA ORGANICS!

Lawn & Pasture Grass Seed

We carry a variety of turf seeds including our own Mifflin/Juniata Grass mixture formulated for our area. Special orders can be accommodated.

Fertilizer, Disease & Pest Control Products

Just some of the Product Lines we stock:

Bonide Espoma

Captain Jack

Miracle Gro

Liquid Fence

Havahart Live Traps

Soils & Mulches

Potting Soil Cedar Mulch

Top Soil Red Cedar Mulch

Mushroom Soil Black Cedar

Cow Manure

Garden Tools

We have a full line of lawn & garden tools including shovels, rakes, & hoes. If you need to trim it, cut it, or move it we have your tool.

Hoses, Nozzles, and gloves in stock.

We have tree wrap and Tomato cages as well.

Fencing & Supplies

Poultry Netting

Hardware Cloth

Barbed Wire

Electric Fence Wire

Posts & Accessories

WE MAKE YOUR FEED FROM YOUR FORMULA OR OURS

Want to create or mix your own custom feed? There is a 500lb minimum and we will work with you to create the perfect feed for your animals! Whether it is for horses, cattle, hogs, bison, chickens, goats or a specialty of any of the above or something else. we will work with you and our nutritionist to get you going in the right direction! We can also deliver!

Local sourced and grown hay and straw, pine shavings and pine pellet bedding plus small animal bedding

4 pound and 50 pound white and trace mineral Salt blocks as well as Free Choice Salt for various livestock available Livestock Mineral Tubs such as Crystalyx available to pick up or deliver.

Welcome to MIFFLIN AGWAY

Welcome to MIFFLIN AGWAY

2026 CHICK LIST