The antibiotic age

Last month, I attended the Alltech ONE ideas conference. Alltech is a global company that produces lots of different products that may be used in many segments of agriculture. Every year, they host a group of bloggers to their conference and ask us to write about what we learned. This was my fourth year to attend, and I would love for you to see what I’ve learned at previous Alltech conferences.

This year, several of the sessions I attended covered the topic of antibiotics. Alltech is a forward-thinking company that is working to reduce the use of antibiotics in food production. They offer feed supplements that farmers can use to keep their animals healthy and productive rather than using antibiotics.

There were also several discussions about sustainable energy and the use of fossil fuels. During one of those discussions, the speaker, Ramez Naam, shared a quote from a former oil minister of Saudi Arabia.

He said, “The stone age came to an end, not because we had a lack of stones, and the oil age will come to an end not because we have a lack of oil.”

That discussion was about oil and energy, but I think that the premise can be applied to antibiotics.

Agriculture has changed a great deal in the past 6 decades. Our population is growing at a staggering rate, and farmers have had to adapt to meet the demands for food in our world. Getting to this point in agriculture has taken lots of tools and one of those tools has been and still is antibiotics.

I have written about antibiotics before. People have trouble understanding the use of antibiotics in food production; the fact that some bacteria adapt to become resistant to them, and that farmers use antibiotics to help keep their animals healthy and are careful to treat their animals in such a way that antibiotic residues don’t end up in our meat. Farmers and consumers have concerns about bacteria becoming resistant to antibiotics, and, in food production, antibiotics are at the front of everyone’s mind.

We have to remember that the Stone Age didn’t end overnight. People slowly figured out new and more efficient ways of doing things. They found new materials and new ways to use old materials. Then, their ideas spread around the world.

We can’t expect the use of antibiotics to end overnight either, but things are happening quickly. Farmers are using a whole-systems approach to improve animal health. Meanwhile, animal scientists are figuring out new ways to help farmers produce healthier animals without the use of antibiotics or with a vastly reduced use of antibiotics.

At the conference, Dr. Aiden Connolly, talked about several ways that animals may be managed to help reduce or eliminate the use of antibiotics.

Genetics: Everyone has that friend who never gets sick. The same happens in the animal world. Some animals are just better at fighting disease on their own. Now, we have the ability to find those specific genes in animals and select for them. By breeding the healthiest females to the healthiest males, and eliminating the more sickly ones, fewer animals will get sick and fewer will need antibiotics.

Biosecurity – health management: In a previous post about antibiotics, I jokingly mentioned that you can’t teach pigs to wash their hooves, but we can manage the humans and the equipment going in and out of farms to keep disease from spreading.

In April, I went to two pig farms in one day, and I took four showers that day. On modern swine and sometimes poultry farms, humans are required to shower in and shower out. That means you take a shower, and only wear clothes that belong to the farm. Even underwear (TMI, sorry). Other precautions included washing the vehicles that we drove every time we entered a new farm, keeping wildlife away, and limiting visitors.

Sanitation and reduced contamination will reduce the exposure of animals to bacteria that cause disease, and will reduce the need to treat those animals with antibiotics.

Nutrition: Keeping animals well-fed and healthy will help their bodies naturally fight disease. Scientists are also learning how to create an environment in the animal that promotes health and fights bacteria without antibiotics.

Gut health and the Microbiome: Last year I wrote a post about the human microbiome, but animals each have their own microbiome. Dr. Stephen Collett, from the University of Georgia, spoke at the conference and he said that when we choose animals for breeding, we are not only selecting their genetics, but also their microbiome. Mothers pass their healthy bacteria to their babies, and all animals share it in their barns, pens, and fields.

The interactive effect of a healthy gut and nutrition is so important. Farmers are learning to feed the good bacteria to fight the bad ones. Dr. Collett said, “We can’t win the war on disease by killing, we have to win by multiplying. We have to nurture what we want.” Using nutrition to feed the healthy bacteria will lessen the need for antibiotics to fight the bad bacteria.

The day after the conference, I watched a webinar by some animal scientists from Texas A&M. They spoke about bacteriophages, viruses that kill specific bacteria. They exist everywhere in nature. Some animals naturally carry them in their guts to help them fight bacteria that might make them sick. Obviously, bacteriophages are part of the microbiome. Scientists are learning more about them and how they can help fight bacteria every day. 

Keep moving forward.

Farmers and scientists are adapting every day to how we fight disease and pathogens in food animals. With every new break through, we have another tool in our toolbox to fight dangerous bacteria. One of the exciting things about working in the food industry is that it is constantly changing.

There is no way our industry is ready to completely stop using antibiotics, but we are finding ways to use fewer antibiotics all the time. The whole industry will continue to keep moving forward to a new age of total animal health. 

The founder and CEO of Alltech, Dr. Pearse Lyons, has a great quote that I think can be applied to the transition away from antibiotics, “Don’t get it right. Get it going.” Changing the tools we use to produce food for 9 billion people is not going to be easy, but we have to keep moving forward. Get it going.

What’s in a food label? Grass Fed

I’ve been working on a series of blog posts about the meaning behind the labels you find on meat packages. Previously, I’ve written posts about the meaning behind the Organic and Natural labels and I’ve talked about how those two terms can be confused with each other and with Grass-fed labeling.

The next labeling term I’m going to cover is Grass-fed.

Hawaii Big Island Beef was popular in Hawaii.
It is all grass fed.

 

To use the Grass-fed label on a beef package, the USDA requires that the cattle were…

·         Only allowed to eat grass or hay for their entire lives

·         Never given grain or grain byproducts

·         Allowed access to pasture during the growing season

That basically means that, in the summer time, they were turned out on pasture and ate grass and in the winter time, they were fed hay because the grass wasn’t growing. They are never fed grain (corn, rice, barley, oats etc…).

You may be asking yourself, “So, what does that mean about the beef that is not labeled Grass-fed?”

That’s one of the things that makes this particular label confusing. Some people may think that beef that is not labeled as grass-fed come from cattle that never see a pasture. That’s not really true at all.

In the US, all cattle are grass-fed. 

Grass-fed cattle.

Cattle are ruminants. Their bodies are able to digest grass and convert it into energy that they can use to grow, fatten, make milk, or raise calves. Their digestive systems are much more diverse than ours. We can’t metabolize grass, but cattle can. That’s part of what makes cows so awesome!

Vallie and some of our cows.I think she was
demonstrating gymnastics to them

Calves are born and live with their mother’s for 5 to 7 months. They may be fed some grain to supplement them, but for the most part, they drink their mother’s milk and eat grass. Their mothers will eat mostly grass, too. Once they are old enough to be weaned (teenagers), they are usually sent to a stocker farm to grow for a few more months. How much grain vs. grass they get at this step depends on the time of year and the weather. If there is grass growing, they will get to eat it. If not, they will eat a combination of hay and grain.

For the final few months of their lives, cattle that comprise most of the beef in the US, will be fed a greater percentage of grain in a feedlot. In the cattle industry, we call the high-energy ingredients used in these diets concentrates because the energy is more concentrated; whereas, grass and hay are called roughages. The high-concentrate (grain) diet allows them to gain weight more efficiently and gives the beef the flavor and tenderness we expect in the US. Even then, they have to get fiber (roughages), too. So, they get hay, silage (fermented hay) and other forms of roughage. It would be unhealthy for the calves if they only ate corn. Their diet is closely controlled by nutritionists.

I have a post about the steps cattle go through to become beef.

One of my favorite blogs is written by Anne Burkholder, a mom, feedlot operator, Feedyard Foodie. She writes about daily life in a feedlot in Nebraska and her kids and beef and life in general.

Ryan Goodman, of the Ag Proud blog just wrote a great post about how cattle digest grass and grain.

Personally, I prefer the flavor of beef from cattle that have been grain-finished (fed grain for the last few months before harvest). Some people prefer the flavor of beef from grass-finished cattle (fed exclusively grass and hay). The great thing is that we have the choice.

Sometimes, labeling claims like organic and natural are confused with grass-fed, but those labeling claims have different meanings that I covered in previous posts.  Most of the time, grass-fed labels are accompanied by claims about being raisedwithout hormones or raised without antibiotics, but those labels have different meaning and will be coming up soon in my labeling blog series.

More about beef farming



 This is me on the bus on our
Moms on the Farm tour.

A few weeks ago, I worked with a group of ladies in agriculture to host the Moms on the Farm tour. About 30 ladies attended a tour of a dairy and a beef farm, and then returned to campus for some cooking demonstrations by the Arkansas Cattlewomen. We plan to repeat the event in the springtime and improve it. There were lots of great questions and the ladies were really interested to learn about where their food comes from. All the questions and interest have become a great resource for my blog posts.




 Mrs. Marsha Hedge talking to the ladies about
her beef farm during Moms on the Farm tour.

We visited a single-mom, beef farmer, Mrs. Marsha Hedge, who has about 40 cows. She used to have over 100 cows, but because of the drought this past summer, she had to sell about 60% of her herd. So, now she is working off the farm part-time and going to school part-time to get her teaching certificate. Most beef farms have circumstances similar to hers. Ninety percent of beef farms in the US have fewer than 100 cows, and the average size of a US beef farm is about 44 cows. Most beef farmers have to work off the farm or have some other type of income to make a living, or their spouses do.

Anyway, Marsha raises the calves from her cows until they are weaned and she sells them to another farmer who will either take them to grow some more on green pasture or to a feedlot to eat grain. This seemed to surprise the ladies on the tour that the beef cattle from the farms around Northwest Arkansas don’t go directly to slaughter. One lady wanted to buy a calf from Marsha to slaughter and another asked if she sold her beef to WalMart. Marsha doesn’t have any calves that are the right age or size for slaughter.

As a host, I should have done a better job explaining that the beef industry is segmented. Cattle sold for beef production may have several owners in their lifetime. I wrote a whole post about the beef industry in February with lots of facts and figures, but I didn’t talk about the different kinds of beef farms in the US.


What are these different types of farms?

1. First, you have beef farms that raise calves to be sold as bulls and heifers (young females) to other farmers. These are called seedstock or purebred farms. Their cows and bulls may cost crazy amounts of money, but they hope to raise animals that will be in demand by other farmers to buy to improve their herds. Most of the time, they only have one or two breeds (like Angus or Simmental), and they specialize in genetic traits that other farmers want. They may have really lean animals or cattle that raise calves with lots of tasty marbling. Other traits are important to farmers, too, like growing fast and having small calves so the cows don’t have trouble in labor. There are books and websites full of numbers reporting these traits of purebred cattle. A knowledgeable farmer can evaluate these figures to buy a bull or a heifer that will improve traits in his or her herd.



This is a picture of my husband,
 Ed, exhibiting one of our
purebred heifers at a fair

If you go to the fair, the farmers that you see exhibiting are usually purebred farmers. They bring their animals to the fairs to show them off to other breeders and to potential buyers.

Most of the 'fluffy cows' you see on the internet are actually very expensive purebred bulls.

2. Second, you have cow-calf farmers. Marsha, the farmer we visited on our tour, is in this category. She bought bulls from a purebred farmer and bred them to her cows. She keeps the best of her heifers (girl calves) to go back to the cow herd, but she castrates her bull calves to become steers, and the steers and most of her heifers go to market to become beef.




 These are some of Marsha's cows.
Her bull is the solid red one on the left.
He is from a purebred breeder.
He actually looks a lot like our bull.

Like most cow-calf producers, Marsha’s cows are cross-bred, or a mix of several different breeds. In the industry, we call them 'commercial' cows. Also like most cow-calf farmers, Marsha uses grass growing in her pastures to feed her cows. She buys them hay and some other nutritional supplements, when the grass isn’t enough for them, but she wants them to eat grass as much as they can. Cattle are great at using grass to grow and make protein.


Marsha weans her calves off their mothers at about 500-600 pounds, which is about 6 to 7 months of age. Then she sells them to one of the next two types of beef operations.

3. The third type of beef farm is a stocker farm. These farmers buy weaned calves and let them grow. Sometimes they eat grass and sometimes they feed them grain, whichever is most economical for them at the time. The Peterson Brothers of I’m Farming and I Grow It fame, have a stocker cattle farm. They buy cattle that weigh 400-500 pounds and feed them until they weigh 800 to 900 pounds.

4. The fourth type of farm is the feeder or the feedlot, like the one owned by Anne and her family over at Feedyard Foodie. Here, cattle are fed grain in addition to hay or other forage and supplements. Feedlots will feed cattle until they are fat enough to harvest. They are usually only there for about 4 to 6 months. In the meat business, when cattle are fat, we say that they are ‘finished,’ meaning that they are ready to go to the processing plant. Finished cattle may weigh anywhere from 1000 to 1400 pounds, some even more.


In the US, people like to eat grain-finished beef. We prefer the taste and tenderness associated with it. I know that not everyone likes it, and there is beef from cattle that have only been fed grass available to buy for those who prefer it that way.





 Cattle in a covered feedlot in Michigan.
Notice that they are eating a
chopped-up mix of grain and hay.

In the western US, feedlots are huge, outdoor facilities, but I visited a cattle covered feeding operation in Michigan on a trip with students a couple of years ago. You can see the cattle are eating a chopped up mixture of grain and forage.


The meat processors send buyers to the feedlots to buy the cattle once they are ready. Then the cattle are sent to the processing plant for harvesting.

Now, lots of farms may be any combination of these segments. For instance, our family has some purebred cattle that we raise bulls and heifers for sale, and we have some commercial cows that just raise calves for market. So we are kind of a mix of the first two. Some farmers may have cows that raise calves and have a stocker section of the farm, too, especially if they have lots of green grass. Farmers have to figure out what works best for them considering the nutrients available and the market for cattle.

So, these calves that we saw at Marsha’s grazing in the fields with their mothers in Northwest Arkansas will probably be sold soon. Then, they may spend a few months grazing and growing on a stocker farm in Oklahoma, and then be sold to a feedlot in the panhandle of Texas. Once they are fat, they may be sold to a processing plant in Kansas and their beef may go to any and all parts of the US. Not only do the calves have several owners throughout their lifetime, they have also probably traveled several hundred miles.

I hope that you understand a little more about the beef industry, and the next time you are buying beef at the store or eating a juicy steak, that you will know that a little more about the path that got the beef to your plate. 

Please feel free to ask any other questions you may have about beef or cattle.