# Ask the Expert: Estimating Winter Hay Needs

Question:  We recently purchased a farm and will be housing our two quarter horses over the winter; they will not ridden during the winter. Because I’ve always boarded my horses, I’m not sure how to estimate how much hay I will need for the winter.

Answer:  An adult horse at maintenance will consume between 2 – 2.5% of their bodyweight in feed (hay and grain) each day. For example, a 1,000 pound horse fed a 100% hay diet would consume 25 pounds of hay each day (using the 2.5% recommendation). From October 15 to May 15 (when there is no pasture in MN), the horse would consume about 5,350 pounds of hay or 2.7 tons. This would equal 107, 50 pound small square bales or six, 900 pound round bales during this time. For two horses, this amount would be doubled. It is critical to know the weight of the hay bales; not all bales weigh the same.

If the same horse was receiving five pounds of grain each day, their hay needs would be reduced to 20 pounds each day. From October 15 to May 15 the horse would consume about 4,280 pounds of hay or 2.1 tons. This would equal 86, 50 pound small square bales or five, 900 pound round bales during this time. Again, double this amount for two horses.

These estimates assume good quality hay is fed in a feeder to reduced hay waste. When feeding small squares-bales, hay waste when a feeder was not used (hay fed on the ground) was 13% compared to only 1 to 5% when a feeder was used.  When feeding large round-bales, not using a feeder resulted in 57% hay waste compared to 5 to 33% when a feeder was used. It’s always best to purchase extra hay to account for waste and because horses may require additional hay during the cold winter months.

# Halloween Candy – Horses & Dogs

It’s the time of year when ghosts and goblins are out and about – there are Halloween costume contests and pumpkin spice everything. And the candy! So. Much. Candy.  But what’s safe for our horses and dogs? Can they participate in the fun or will the candy make them sick? Most dog owners know that chocolate is toxic to dogs – but would you know what to do if your pup helps himself to that bowl of peanut butter cups? And our horses LOVE sugary snacks, but what’s really safe for them to have and what’s not?

Let’s begin with dogs and chocolate. First off, if you know your dog has ingested chocolate, call your vet. Depending on the type of chocolate and the size of your dog, you may need to bring them in right away. Cocoa powder is the most toxic type of chocolate and white chocolate is the least. Depending on your situation, your vet might suggest you induce vomiting. If you aren’t sure if they ingested it, you should watch your dog for signs of chocolate toxicity – things like vomiting, diarrhea, confusion and restlessness.  When in doubt, go to your nearest emergency vet clinic.

Besides chocolate, really no candy is truly safe for your dog. Many other types of candy such as gum contain a sweetener called xylitol that can cause liver failure in dogs. It’s best to stick to dog specific treats if you want to give your dog something fun for the holiday.

As for horses, what can they have for a Halloween snack? Of course for any horses with insulin resistance diseases, gastric ulcers or other medical conditions, you should stick with only what your vet suggests for treats and feed. But will the occasional candy corn hurt your ‘normal’ horse? Probably not, but keep in mind candy (mints included) have more sugar in them than just one sugar cube, so keep the Halloween treats to a minimum and keep your horse away from anything chocolate. But the safest thing is just giving your horse a carrot, which he will love just as much!

Happy Halloween everyone!

# Fall Check List for Broodmares – Verify Pregnancy & Plan for Next Year

One of the most important development periods in the life of a foal is the last six months of gestation when the foal is developing in the uterus of the mare. The importance of this period was recognized in the Nutrient Requirements of Horses, Sixth Edition, when the Committee established that the nutrient requirements of the mare start increasing at the sixth month of gestation. Mares that foaled and were re-bred or were bred in the first four months of the calendar year may now be entering sixth month of gestation, so a fall check-up is an excellent idea.

The key elements of managing the pregnant mare are the following:

1. Verify that all bred mares are pregnant. If there are open mares, now is the time to assess potential problems and prepare them for breeding the next season. If a mare was pregnant and has lost the pregnancy, now is the time to plan her program. If she needs to go under lights, that should happen about December 1. If Body Condition was an issue, now is the time to bring her up to desired score.
2. Mares should be at about a body condition score 6 when they foal so that they have sufficient energy reserves for early lactation as well as to maintain condition for re-breeding. If they need to gain weight, now is an excellent time to gradually increase the energy intake of the diet so they will be in the desired body condition at foaling. If they are a bit too heavy, increased exercise or slight reduction in energy intake may be useful while still maintaining amino acid, vitamin and mineral intake for the developing foal. Drastic weight loss is NOT recommended!
3. Lysine, methionine and threonine, the first three limiting essential amino acids, need to sufficient in the diet for placental and fetal development. Amino acids are more critical than crude protein.
4. The mare needs to be receiving adequate calcium, phosphorus, magnesium, copper, zinc, manganese and selenium to provide minerals for the development of the foal and to build the foals own trace mineral reserves. Trace minerals are also critical for immune support. A good vitamin program is also essential.
5. A regular health care program should be developed in conjunction with a veterinarian so the mare is protected herself and can also produce antibodies to protect the foal when it nurses and receives the colostrum that contains maternal antibodies.

Good quality pasture or forage may provide sufficient energy thru late gestation, but is unlikely to provide adequate amino acids, vitamins and minerals. An appropriate ration balancer product may be used from month five to about month 10 or 11 of gestation to provide the missing nutrients. A feed designed for broodmares and foals can be introduced prior to foaling so that the mare is on the feed before she foals. This feed can then be increased after foaling to provide both the increased energy and the increased nutrients that are required for lactation, as well as providing nutrition for the foal when it starts to nibble on feed. Fresh clean water and free choice salt should also be available at all times.

Feeding the broodmare properly during gestation can help reduce the risk of developmental problems for the foal and help insure that the mare can be rebred in a timely manner to produce another foal the following year.

# The Buddy System – Horses and Hens as Companions

Have you ever wanted to diversify your farm with companion species? If so, do you find yourself wondering, ‘What species go well together?’ Well that answer can be as simple as horses and hens! Horse owners can find multiple benefits in adding chickens to their operation. Not only are they fun to watch, but the chickens can serve a purpose!

• Chickens are opportunists. When a pellet or kernel falls, they’ll be there to pick it up. This saves your horse from mouthing around on the ground to find bits of feed (a practice that can lead to ingestion of dirt and sand) and it reduces the amount of feed that is wasted.
• Chickens are good horse trainers. A horse that has had exposure to poultry won’t “have his feathers ruffled” by sudden movements, loud noises, or the occasional appearance of an egg…
• Chickens help prepare your horse for the trail. If you plan to take trail rides where wild turkeys, partridge, chuckar, etc. populate it can be beneficial to have your horse used to the patterns and noises of fowl by keeping a few chickens around. A little exposure to flapping, squawking and scurrying can go a long way to desensitizing your horse to those types of events out on the trail.
• Chickens are nature’s fly traps. You and your horse hate bugs – but chickens love them. Chickens eat flies, worms, grubs, bees; if they can catch it they’ll nibble on it, which means it won’t be nibbling on you or your horse.
• Chickens are low maintenance. Provide them with a cozy place to sleep, fresh clean water, free choice oyster shell for strong eggshells, grit for digestion and some layer feed and they will be happy and healthy.
• Chickens help with the chores! One of a chicken’s favorite things to do is scratch the ground for hidden treasures. Give them a pile of horse droppings and they think they’re in heaven! They’ll have the manure broken down, spread around and out of sight before you can even think of grabbing a pitchfork and wheelbarrow!
• Chickens are pets with benefits. Besides being a colorful and entertaining addition to your stable yard, chickens provide one thing your horse can’t – breakfast! Now if they could only cook it and serve it to you in bed…

A few words of caution about keeping chickens with your horses – make sure that your chickens are fed separately from your horse and that your horse can’t get into their feed. This will eliminate the risk of your horse consuming layer feed that is not designed for his digestive system. Also, provide roosts for your chickens that are away from your horse’s feeder if they are not put into a coop at night to eliminate waste of feed and hay due to chicken droppings. Make sure both your horse and chickens have fresh, clean water that is easily accessible to them at all times.

# Tips on Growing and Selling Horse Hay

Five horse hay growers in Minnesota share their tips on growing and selling horse hay, including how they monitor moisture throughout the baling process, how they work around the weather, what types of forages they grow and the investment it takes to grow and harvest hay. The farmers also share their advice for individuals wanting to grow and/or sell horse hay and their greatest challenges associated with growing and selling horse hay.

This video was shared with permission from Krishona Martinson, University of Minnesota. This and other horse nutrition articles can be found at http://www.extension.umn.edu/agriculture/horse/nutrition/.

# Feeding Foals During Weaning and Post Weaning – An Important Time Period for an Equine Athlete

Properly preparing the foals to be weaned can make the process much easier for everyone!

Keep in mind that weaning can be a high stress period for the foal. With that in mind, other high stress events should probably not take place at the same time as weaning.  The following management practices should be in place before the foal is weaned:

1. Make certain that the foal is consuming at least 1 pound of a feed per month of age of a feed designed for foals and weanlings. If a foal is 4 months of age, it should be consuming at least 4 pounds of feed per day. If a foal is 6 months of age, it should be consuming at least 6 pounds of feed per day. Appropriate feeds will be 14-16% protein with controlled starch and sugar along with amino acid, mineral and vitamin fortification. Keep in mind that past 2 months of age, the milk produced by the dam is not sufficient to maintain adequate growth, so the foal should be creep fed if possible as not all mares allow the foal to eat with them. The day you wean the foal is NOT the day to change feeds! The foal should also have access to high quality forage, loose salt and fresh, clean water.
2. Make certain that the foal has been vaccinated for appropriate diseases according to your health care plan. Vaccination is a stress on the animal, so you do not want to do this at the same time you wean the foal if that can be avoided.
3. The foal should also be de-wormed prior to weaning.
4. The foal should have been handled, taught to lead and have had its feet trimmed.

There are a number of ways to separate the foals from their mothers and many farms manage in different ways.

Monitor the new weanlings fairly closely and increase feed intake to maintain growth and body condition, feeding according to both weight and Body Condition Score. Some weanlings become a bit pot-bellied and look a little rough following weaning. This is frequently due to inadequate feed intake and too much forage. The cecum is not fully developed in the weanling, so it cannot digest forage as efficiently as an older horse.  This limits nutrient availability and may limit growth and development.

Proper preparation can minimize the stress of weaning for foals and help maintain uniform growth and body condition. Uniform growth and maintaining target body condition is essential to reduce risk of certain types of Developmental Orthopedic Disease. One of the things we want to avoid is letting the weanling get off normal growth rate, then deciding to push for rapid growth as a yearling to hit target for show or for scheduled sales.

# What’s Lurking in the Water – Understanding Blue-Green Algae

Weather and water conditions in many parts of the country have created or will create conditions favorable for the rapid growth of blue-green algae. Please be on alert with your horses, other animals and yourselves, and use precaution around water sources.

These single-celled organisms are actually algae-like bacteria instead of being true algae and are also referred to as Cyanobacteria.  They grow rapidly and may produce the pea-soup green color in some bodies of water, along with some foul odors.  The rapid growth periods, called “blooms” most frequently occur when there is a combination of warm weather, intermittent or limited rainfall and an accumulation of nutrients, particularly phosphorus and nitrogen. Blooms can range in color from green, to blue, brown or red. Water sources of fresh, brackish or salt water can all be affected by harmful algal blooms. Most often, slow moving water sources are the most suspect, although harmful algal blooms can occur in any water source with favorable conditions.

The planktonic groups produce the pea green water while the mat-forming groups produce dark mats that start on the bottom and float to the surface.  The planktonic species (Anabena, Aphanizomenon and Microcystis) are believed to be most likely to produce toxins which can be harmful or fatal to animals when ingested. Although, you cannot tell by looking at the bloom whether or not cyanotoxins exist. (Fact Sheet on Toxic Blue-Green Algae, Purdue University, Carole A. Lembi)

Toxins may be ingested when animals drink the water, when they lick their coats after being in the water, or when they inhale water droplets.  Animals are more likely to consume the water if fresh, clean water supplies are limited from other sources. Not all animals are deterred by foul odors that may be produced from the blooms.  Animals that drink or have exposure to the water during a period when cyanotoxins are being produced may be affected, but toxins are not always produced when there is a bloom.

Providing a source of fresh, clean, safe drinking water is the best way to avoid causing animals to consume questionable water.  If animals go swimming, they should be cleaned off before they have a chance to lick their coats, try not to engage in physical exertion near the water supply where inhaling water droplets could occur.

Preventing access to waterways is one way to prevent toxin exposure. Swimming in, contact with, breathing in water droplets or drinking water in ponds/lakes/streams is not recommended during temperatures or conditions that are favorable for blooms to exist. Most often slow moving water or calm water that has a greenish appearance are those most suspect to algal blooms, however they can exist an any water source if the conditions have been favorable. If contact has occurred watch for symptoms and promptly notify your veterinarian. When in doubt keep your animals and yourselves out of the water. Provide access to fresh, clean water at all times for your animals.

Toxic symptoms may include:

• Diarrhea
• Vomiting
• Rash and skin irritation
• Difficulty breathing
• Seizure
• Death

While not all “blooms” may produce toxins, avoiding exposure to or consumption of suspect water is recommended.  Risks of illness after the blooms are gone are low, however some toxins can still remain in the water once the blooms are gone. More information is available from local and state pollution control sites or extension sites. Health Departments recommend, when in doubt, keep out of the water.

Preventing run-off of nutrients into ponds and lakes is also important to help reduce the risk of these algae blooms.  Keeping vegetation around water sources can help naturally filter. Drought conditions in some areas have also increased the concentration of nutrients in the remaining water in ponds, lakes and streams.

# Ask the Expert: Grazing Muzzle Use

Question: I put a grazing muzzle on my fat gelding. He is ridden multiple times a week, but is an easy keeper. He shares 8 acres of pasture with one other horse. Should I leave the grazing muzzle on all the time or give him an hour of freedom without the grazing muzzle each day?

Answer: We know from past research that a grazing muzzle reduces intake by 30% and that some horses can become very adept at grazing through a muzzle. As long as the horse can easily access water and can tolerate wearing the muzzle, we recommend leaving the muzzle on all day for an overweight horse with access to pasture. A 30% reduction is calories (or pasture) should result in weight loss. Research has also shown that horses with access to as little as 3 hours of pasture each day can consume a majority of their daily calories and can anticipate and adjust to the restricted grazing schedule.

Owners should track their horse’s bodyweight and body condition score each month. Reduce the amount of time the horse is muzzled if excessive bodyweight and body condition is lost. Conversely, if the horse starts to gain bodyweight (or is not losing bodyweight), it might be best to house the horse in a drylot and feed a reduced calorie hay diet (i.e. mature grass hay). The goal should be for the horse to lose weight slowly but steadily. If excessive bodyweight continues to plague the horse, we recommend working with an equine nutritionist and your veterinarian to identify additional solutions for weight loss.

# Forage and Floods – After the Water Recedes

2017 has been a challenging year in many parts of the country with excess rain and some widespread flooding. Several of the potential impacts of flooding are forage issue that may remain long after the water has receded.

Potential Forage Hazards:

1. Flood waters may deposit detrimental contaminants on pastures, fields and stored forage. Some of these hazards might include pesticides, dead animals, industrial waste, untreated sewage and silt.
2. Forage harvested after being flooded may still have some of the contaminants present on the lower portion of the forage. Any debris washed into the field, if not removed prior to harvest, may be accidentally baled up in either round bales or square bales. Even clean silt clinging to the forage may increase the ash content of the forage.
3. Stored forage, particularly round bales or the lower level of hay stacks may become saturated with moisture, leading to mold issues and potential organic matter decay.
4. Organic matter that is baled into forage, particularly round bales, may create an opportunity for clostridium botulinum bacteria to multiply anaerobically as the organic matter decays. This bacteria produces the deadly botulism toxin, one of the most potent toxins produced in nature.

Recommendations:

1. Clean and disinfect flooded facilities as soon as possible. Make certain structures are sound before entering to work on them.
2. Remove debris from barnyards, pastures and fields. Unfortunately, no easy solution!
3. Make certain the ground has dried enough to support vehicles before driving in flooded areas.
4. If stacked hay or round bales have been soaked, do not feed the affected bales. If bales must be fed (i.e. emergency forage needs), monitor consumption closely and avoid spoiled areas. If in doubt, throw it out!
5. If harvesting forage from fields that have been flooded and dried out, be very vigilant when mowing and conditioning the forage. You may have to wait a few extra days to allow plants to recover. If there is silt on the lower stem areas, consider leaving longer stubble. Local Agricultural Extension Educators may have specific recommendations for specific locations and for types of rakes that do a better job of reducing ash content.
6. Be extra vigilant when feeding baled forages that have been harvested off of ground that has been flooded.
7. You may want to soil test fields and pastures to see if lime or fertilization will be useful.

If rainfall patterns change, flooding may become more common. Extra vigilance and management may be required to keep horses healthy in these challenging conditions.

Useful Reference: Barnhart, Stephen K. “Summer Flooding of Hay Fields” Integrated Crop Management News, Iowa State University Extension and Outreach, June 2008.

Additional pasture management resources can be found at the University of Minnesota Extension Horse Program website.