Posts Tagged: cattle
California is searching for solutions to the wildfire crisis. Livestock ranchers believe they can help.
At the 14th Annual Rangeland Summit in Stockton in January, more than 150 ranchers, public land managers and representatives of non-profit organizations that work on land conservation gathered to share research and experiences that outline the value of cattle and sheep grazing on rangeland.
Since California was settled by Europeans, cattle and sheep have been an integral part of the state's history.
“Cattle can control brush,” said Lynn Huntsinger, UC Cooperative Extension specialist at UC Berkeley in a presentation on brush management. She discussed research she conducted in the early 1980s to understand the role of cattle in Sierra Nevada brush control.
“We need to make livestock into firefighters,” she said. “Constant, deliberate, targeted grazing is needed for fire management.”
However, thick, overgrown brush requires intensive treatment that cattle can't handle on their own.
“You have to start from a good place,” Huntsinger said. “Start early, such as post fire. Plan when you have a blank slate for the forest you want.”
The tragic loss of homes and lives to wildfire in the last few years has increased the public demand for answers and action. However, the reasons for greater frequency and intensity of wildfire are not well understood.
“Is it climate change? Past decisions? Land use? What can we do about it?” asked UC Cooperative Extension specialist Van Butsic. “Research.”
At the summit, Butsic presented the results of his recent research to determine whether ownership has an impact upon whether land will burn. He and his colleagues studied the burn histories of forest and rangeland areas that were matched with the same characteristics, except in ownership.
“We controlled for all factors – slope, elevation, the likelihood of ignition,” he said. “We found that on forest and rangeland, federal ownership led to .3 percent higher fire probability. Ownership is dwarfing the impact of climate change.”
There is still much more research to be done.
“We can't say the impact of grazed vs. ungrazed land,” Butsic said. “We also need to look at fire severity as well as fire frequency.”
The UC Cooperative Extension advisor in Modoc County, Laura Snell, shared preliminary results at the rangeland summit that provide information for landowners making decisions about returning livestock to burned areas.
She and a team of colleagues studied the fire history of U.S. Forest Service and Bureau of Land Management rangeland in Lassen and Modoc counties where fires had burned through 5, 10 and 15 years before. The dataset included information about whether the land was “rested” for two years after the fire, or whether livestock were returned to graze soon after the blaze.
The scientists set out to determine whether fire intensity and climate at the site (measured by soil temperature and moisture) had an impact on the future diversity of plant species and growth of cheat grass, an invasive species that animals don't like.
“No matter what we did, graze or not graze, after 15 years, the species richness stayed the same,” Snell said. “Grazing was not the driving factor.”
The results are also important in terms of fuels accumulation and the prevention of future wildfires.
“Federal land managers have typically used a policy to rest the land for two years after a fire. During the interval, the fuels sometimes burn again and livestock producers have to wait another two years,” Snell said. “Our research showed you don't necessarily need to rest the land after the fire.”
Two ranchers who were recently impacted by wildfire presented their experiences and perspectives during the rangeland summit.
Mike Williams of Diamond W Cattle Company had livestock on 6,500 acres of leased land in Ventura County when the Thomas Fire ignited on Dec. 4, 2017. Over more than a month, the fire burned 281,893 acres and consumed 1,000 structures.
Williams had stockpiled feed on certain pastures by limiting grazing, which during the fire turned into hazardous fuel.
Adam Cline, rangeland manager for the Yocha Dehe Wintun Nation Preserve in the Capay Valley, had a similar experience when the County Fire burned more than 90,000 acres in western Yolo and eastern Napa counties in June and July 2018. To reserve feed for later, Cline had left 2,500 pounds per acre of residual dry matter on grazing land as a drought mitigation strategy. He said he plans to reconsider this grazing plan.
“Now, cattle feed looks like a lot of fuel,” he said.
The Ventura County Cattlemen's Association publicly thanked UC Cooperative Extension and other organizations for their support during the devastating wildfires of late 2017.
In the space of 12 hours, the Thomas Fire ripped through vital grazing land that cattle rely on for their daily feed. Some animals were also killed in the fire. In a letter to the Ventura County Star, Beverly Bigger, president of the Ventura County Cattlemen's Association, said UCCE livestock and range advisor Matthew Shapero, the Ventura County agricultural commissioner and representatives of Ventura County animal services established an emergency program to supply five days of hay until ranchers could get on their feet.
UC Cooperative Extension also served as a one-stop location where ranchers could meet with representatives from multiple agencies to apply for assistance programs.
"We want to thank and recognize them for helping us in our time of need. We look forward to returning to our passion: managing and improving the land and continuing Ventura County's ranching heritage," Bigger wrote.
While Americans traditionally beat a path to the malls the day after Thanksgiving, many opt out of shopping on Black Friday to enjoy the outdoors. In regional parks and other open spaces, hikers may encounter crowds of a different sort – cattle grazing with their calves. A 1,200-pound cow blocking the path can be daunting.
With a little patience and understanding, people who hike, bike and horseback ride can coexist peacefully with the cattle, according to Sheila Barry, UC Cooperative Extension livestock and natural resources advisor in Santa Clara County.
For happier trails, UC Agriculture and Natural Resources has produced a series of videos that show hikers how they can amicably share open space with their beefy neighbors. In a two-minute video, a black cow puppet with a furry white face describes how to politely coax cows to moo-ove aside without spurring a Black Friday stampede.
“We wanted to produce videos that are entertaining as well as informative,” Barry said.
The cow pun-filled video also describes the ecosystem services cattle provide by consuming nearly their body weight in plants. By grazing, cows manage the vegetation, reducing wildfire fuel, increasing water capture and promoting the diversity of native grasses and wildflowers.
In “Sharing open spaces with livestock,” the UC Agriculture and Natural Resources livestock experts give four simple tips for safely sharing open space with cows on the trail:
- Keep moo-ving and speak in a normal tone. Sudden movements and loud noises may surprise cows.
- Approach cows from the side or front. They find it udderly unnerving to have someone sneak up from behind, the bovine blind spot.
- Steer clear of getting between a protective mother and her calf.
- If you need to move a cow, step slowly into its flight zone. Invading the animal's “personal space” will motivate it to mosey aside.
A second video, “Sharing open spaces with livestock when you have a dog,” gives advice for dog owners to keep their best friends safe around cows.
In a third video, “A year in the life of a cow,” the UC Cooperative Extension spokespuppet describes a typical year for a beef cow.
“The videos are a fun way to educate the public about grazing on rangelands,” said Stephanie Larson, UC Cooperative Extension livestock and rangeland advisor in Sonoma County.
The videos are based on the UC ANR publication “Understanding Working Rangelands,” authored by Barry and Larson, at http://ucanr.edu/shareopenspace.
Watch all three videos on UC ANR's YouTube channel:
Sharing open spaces with livestock https://youtu.be/Qd8LEGLDhaM
Sharing open spaces with livestock when you have a dog https://youtu.be/zzdGnfFwmcA
A year in the life of a cow https://youtu.be/znJbWknVXVg
Poor management of grazed rangelands can "exacerbate the effect of drought," the report said.
The Forest Service identified the need to reduce cattle numbers on public land during a severe drought - in come cases to 50 or 70 percent of total carrying capacity, which is the number of animals the land can support before causing environmental degradation. Plants that have been overgrazed "are less able to recover after a drought," the report said.
For expert commentary, Danovich turned to a UC Agriculture and Natural Resources (UC ANR) source. Sheila Barry, the livestock and natural resources advisor for UC ANR Cooperative Extension, said ranchers do have to reduce herd size in times of extreme drought.
Cattle that graze on the open range are usually finished at a feed lot. In the first year of drought, ranchers have the option of weaning cattle early to reduce demands on the land without reducing the herd size. In the second year of drought, ranchers have to consider cutting into their herds. "As soon as they do that," Barry said, "it can take up to eight years to build it back."
Dairy cows have been bred for optimal dairy production, but the gene mix brought along horns. Angus beef were bred for optimal beef production, and don't have horns. Since the dairy industry doesn't want animals with horns because they can hurt each other or farmworkers, it is common practice to remove them shortly after birth.
Removing the horns involves an uncomfortable procedure called debudding, in which, after being treated with a local anesthetic, the cells on the animal's head that would grow into horns are killed with an electrical appliance.
"Consumers are concerned about how we care for dairy animals. They expect us to do a good job and are concerned about pain and discomfort," said UC Davis veterinarian Terry Lehenbauer in a video about the advancement (See the video below).
Using precision genetic "editing," scientists were able to delete the dairy cow gene that produced horns and replace it with the angus gene that resulted in hornlessness.
At UC Davis, the two calves' growth and development will be tracked. Eventually they will father cows with horned mothers to see if the hornless trait is passed on to the offspring. The odds of them doing so, Van Eenennaam said, are 100 percent, if "Mendelian genetics hold true." Mendelian genetics are laws of gene inheritance discovered by 19th century monk Johann Mendel.
Van Eenennaam said it's not clear whether other, unexpected effects of the gene editing will occur. However, if successful, gene editing will allow the dairy industry to bypass decades of breeding for hornless cows.