Tuesday, 11 April 2017

Achieving Invasive Species Control Using Goats

By Sarah Cox


There's continuing interest in green ways to handle environmental problems. Achieving invasive species control using goats is one method that is growing in popularity. These browsing animals have been used in southern states for decades to keep kudzu vines (excellent livestock feed, which is why it was introduced) from overwhelming the landscape.

You know how commercial beekeepers move their hives from blooming mono-crop to blooming mono-crop, to boost the yields by increasing pollination? Well, now goat herders are doing the same mobile service kind of thing. Some people have from 30 to 700 goats and they rent them out to landowners with a problem. Herders travel with their herds, putting up temporary fences where needed and making sure the goal of eradication is reached.

The cost can be high, so often it's a public organization that engages the herd. Landfills, parks, and roadsides may be more easily cleared with animals than with manual labor or heavy equipment, and with far less disturbance to the ground. Firefighters have found that a herd of goats can quickly reduce the amount of underbrush around trees, cutting down the fire hazard. A goat never minds a steep hillside, either.

A private landowner may not have the budget for this. The answer might be to acquire a herd and use them to clear problem areas. Once the job is done, the animals can be sold to others with the same sort of problem. Anyone getting livestock should know about basic care and also be aware of plants that can harm grazing animals.

Many of our favorite plants are actually imported and can be invasive. Queen Anne's Lace and daisies are pretty in a field, and Dame's Rocket can be spectacular along a roadside. The scent of honeysuckle and multiflora rose on a summer's night is heavenly. However, many a gardener knows to nip the first honeysuckle vine in the bud and that that pretty flowering hedge rose can take over a neglected area faster than you'd think.

Some of the worst offenders are aquatic plants. Marshes are sensitive areas, and wetlands are very important for wildlife and for watershed protection. Goats aren't much use in standing water, but they will hop from tussock to tussock and quickly reduce the problem to manageable proportions. Native species can be given a chance to recover and re-planting efforts can succeed.

Goats love to browse on tree leaves and think honeysuckle and kudzu are ambrosia. They do a great job on poison ivy, a plant few want to clear by hand. A goat can live on this kind of nuisance plants, although those being prepared for the meat market might need a few months on alfalfa hay before the sale. In warmer areas where the goat can forage year round, it's easier to turn a profit.

A goat will eat almost anything of a weed, vine, or brush nature. They prefer variety, so sometimes they need to be penned in a problem area so they'll eat what needs to be eliminated. They are proving remarkably effective at helping people control overly vigorous plants.




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