14 May 2019

Fairy Umbrellas

I like to call these fairy umbrellas. Perhaps my mind is in vacation mode, but they remind me of a crowded beach. I like to imagine all of the little fairies posting up in their favorite woodland area to enjoy a day of relaxing. Maybe in the late summer when the fruit develops, they use it to play a game similar to beach volleyball…

Would you believe that the majority of these plants (see pic 1) are actually from one individual? That’s right, American Mayapple (Podophyllum peltatum) is a rhizomatous perennial, reproducing asexually by means of rhizomes underground. It’s one of the first early spring wildflowers in Ohio, often found in shaded woodland areas. Mayapple is hard to mistake for many other wildflowers because of its large rounded leaves and colonial growth. The shoots that grow vertically, producing the colony above ground, consist of either one leaf (asexual) or two leaves (sexual). A lone flower is produced in the axil of the plants with two leaves, usually in May (see pic 2). This plant does not appear to be trying very hard to attract pollinators with its inconspicuous flower placement, but even more perplexing is that the flower lacks nectar! The pollen produced does in fact attract some native bees and bumblebees. Thus, because Mayapple is extremely unlikely to self-pollinate and is lacking in its sexual reproduction design, the majority of the energy goes into rhizome growth, creating a highly clonal species.

Mayapple stays in suspiciously pristine condition compared to neighboring plants full of insect damage. That’s because the majority of the plant is poisonous. In fact, podophyllotoxin can be extracted from the rhizomes or leaves and used medicinally for cancer treatment. The only edible part is the berry, but even then you need to avoid the seed and the skin. If the flower is pollinated, a small lemon shaped berry is produced by August. Some mammals and birds are known to eat the berry, but the primary Mayapple seed disperser is the unsuspecting Eastern box turtle. Even slower than a turtle, if a seed successfully disperses to a new area to grow, it is believed to take around five years to mature to produce rhizomes! I sure do love the image of a box turtle munching berries in the shade of mini umbrellas. Would the turtle be considered a pet to the fairies? Would it cause pandemonium like Jaws? I encourage you to go on a hike in search of these flowers currently blooming and again in late summer for the berries. Who knows, maybe you’ll come across a fairy or even a box turtle!

~Tracy

10 May 2019

“The Best Laid Plans…..”

“The Best Laid Plans…..”

We were so excited to begin our controlled experiment looking at the horses pastured with and without chickens.  The pasture was chosen, the chicks were reared and a smaller mobile coop was constructed.  We did not anticipate that the chickens would be reluctant to leave the coop and forage in the field.  We suspect the chickens may be too young to begin foraging and this has disrupted out experiment.  The equine department will continue to monitor ticks to collect data on numbers and will also collect data on the chicken behavior.  This information will be used to strengthen future experiments.

–Jennifer

01 May 2019

Where the Wildflowers are…

Where the Wildflowers are…

Being in the woods daily has given me a perspective on spring ephemerals that I have not experienced before.  In the past, I would generally hike in the woods around April and “see what was blooming”.  This year, I watched leaves emerge from the ground and in some cases knew exactly what flower was coming, but in other cases I had to wait several weeks for a flower in order to identify the species.   The mottled waterleaf leaves emerged early but I saw no blooms until May. In some cases, I was waiting for a bloom that did not arrive (wild leeks- thank you Team Nature for that tip).  Mayapple poked up its stems over the course of one weekend and I missed the bloodroot flowers completely.  But now I have a better sense of what wildflowers are on the property and where they are blooming.

–Jennifer

Yellow trout lily blooming amid the invasive lesser celandine.
08 Apr 2019

Grass-Finished Beef Nutritional Study Publication

Grass-Finished Beef Nutritional Study Publication

Our research manuscript “A Nutritional Survey of Commercially Available Grass-Finished Beef” has been published in Meat and Muscle Biology™ , the official publication of the American Meat Science Association. 

Read the whole manuscript online or download a pdf copy.

From the abstract: Consumer interest in the source of their food, its environmental footprint, and the impact of diet on health has supported the growth of the grass-finished beef (GFB) industry. Studies have concluded that GFB has distinct nutritional differences from conventionally-finished beef. As the GFB industry continues to expand, it is vital to continue to explore the nutritional complexities and variation in the product. To achieve this, a survey of grass-finishing production systems throughout the USA was conducted, and beef finished on the participating farms was analyzed for its nutritional composition, including fatty acid (FA), mineral and fat-soluble vitamin contents. Samples were analyzed from 12 producers and annual production capacity of farms ranged from 25 to 5,000 cattle, with a mean age of cattle at harvest of 26.8 ± 2.30 mo. An array of finishing diets included grazing exclusively in perennial pasture, incorporating annual forage crops, and feeding a variety of harvested forages with supplementation of non-starch feed byproducts. Beef muscle tissue FA content was analyzed by gas chromatography-mass spectrometry (GC–MS). The mean ratio of omega-6 (n-6) to omega-3 (n-3) FA in samples varied significantly by producer, ranging from 1.80 to 28.3 (P < 0.0001), with an overall sample set median of 4.10. A selection of minerals including iron, magnesium, and potassium were analyzed by ICP emission spectroscopy and mineral content significantly differed by producer for all minerals (P < 0.001). Mean α-tocopherol and β-carotene content was 610.6 µg/100 g beef and 32.2 µg/100 g, respectively. The amount of these antioxidants also varied between producers (P < 0.0001), but tended to be greater in beef finished solely on fresh forages. This survey indicates that commercially available GFB can vary in nutritional composition due to the diverse practices used to grass-finish cattle.