Dan Macon discussing sheep management during the 2022 Cattle and Sheep Grazing School in Auburn, CA

Writing my last blog post as the Livestock and Natural Resources Advisor for Placer, Nevada, Sutter, and Yuba Counties is bittersweet. When I became the advisor in 2017 (filling Roger Ingram's enormous shoes), I assumed I would stay in this job until I retired. Life had other plans for me.

As many of you know by now, I lost my wife Samia to brain cancer in August 2023. Around the same time she was beginning treatment, we learned that my mother had been diagnosed with dementia. As a result, in January of this year, I requested a transfer to the vacant Livestock and Natural Resources Advisor position in the Central Sierra UC Cooperative Extension office, closer to Tuolumne County (where most of my family still lives). I'm grateful that UC Ag and Natural Resources (UCANR) granted my request; I start this new position on October 1 (just two weeks away!). I've sold our home in Auburn and am in the process of relocating to the small town of Mountain Ranch in Calaveras County, where I'll be much closer to my parents and to my sister.

Sami and I became part of the Placer County agricultural community in 1994, when we moved to Penryn. Leaving our community – and the Auburn home we'd purchased in 2001 – is difficult. We raised our daughters in Auburn. We still have some many friends and connections in Placer County. But I'm excited about this new opportunity, too – I'll be based out of the San Andreas office, so I'll just be a couple of hours south on Highway 49!

And I will maintain my Ranching in the Sierra Foothills blog and my UCCE Foothill Sustainable Ranching Facebook page. And you can still find me on X (or Twitter) as @flyingmulefarm (or Sheepherder Scientist). I look forward to reconnecting with ranchers and rangeland managers in the communities where I was raised! Stay tuned for the next chapter!

Finally, I'm very pleased to announce that UCANR has named my replacement for Placer, Nevada, Sutter, and Yuba Counties! Andrea Warner will join UC Cooperative Extension on October 1! I hope you'll join me in welcoming Andrea!

Welcome Andrea Warner!

Andrea Warner

Andrea was born and raised in Nevada County, California, where she was active in youth sports and the 4-H program. Her interest in livestock and agriculture started when she had the opportunity to rise and show market pigs for the Nevada County Fair. Once in high school, Andrea's interest in agriculture increased as she became more involved in her school's FFA chapter through speaking competitions, extracurricular courses, and continuing to raise market pigs. She knew that she wanted to pursue a career in agriculture after high school and started by enrolling at Sierra College.

During her time there, Andrea developed an excitement for animal science, and started an internship at the UC ANR Sierra Foothill Research and Extension Center. There, she assisted with a variety of beef cattle research projects and calving out the UC Davis cow herd. Andrea then transferred to California State University, Chico, where she earned her B.S in Animal Science in 2018. Following her passion for livestock research, Andrea decided to continue her education at Oklahoma State University. There, her research focused on feedlot nutrition and feeding cotton byproducts to finishing cattle, and she worked on several commercial cow/calf operations while attending school. Following the completion of her M.S in 2020, Andrea accepted a position at Langston University as the Research Farm Manager at the American Institute for Goat Research. At Langston, Andrea managed a large herd of dairy and meat goats, and hair sheep which were used for nutrition, health, and management research at the facility.

For the past year and a half, Andrea has been the Staff Research Associate at the Sierra Foothill Research and Extension Center where she has worked on many research projects related to beef cattle production, natural resources, climate change, and rangeland management. Becoming a farm advisor was Andrea's long time career goal, and she is most excited about building relationships with local producers and community members in the industry while continuing to address challenges with a research-based approach. When she is not working, Andrea enjoys taking full advantage of the outdoor recreation our area has to offer; some of her favorite activities include hiking, riding dirt bikes, hunting, fishing, and spending the day at the lake or river with friends and family.

Andrea will be based out of the Auburn office. She can be reached at (530) 889-7385 or alnwarner@ucanr.edu.

Bodie: a Maremma x Anatolian Shepherd.

Folks new to the world of working livestock guardian dogs (LGDs), whether they are producers or dog aficionados, often ask, “What's the best breed?” or “What breed is your dog?” I usually begin my answer with a joke: “He's a North American BWD – Big White Dog!” I then go on to explain that all of my successful dogs have usually been a mix of breeds, and that I put more emphasis on the working abilities of my dogs' parents and on desirable phenological traits (like a short coat) than I do on selecting specific breeds. My most recent dogs have all been mixes – Maremma-Anatolian, or Pyrnees-Akbash, for example. And I suspect that most working LGDs here in North America are not purebred – dogs that work in a production setting are also those who get to reproduce, regardless of whether they are purebred. Sometimes this breeding is intentional! A new paper published in iScience sheds light on the varied ancestries of modern livestock guardian dogs.

In “Multiple ancestries and shared gene flow among modern livestock guarding dogs,” the authors generated genome-wide single nucleotide polymorphism (SNP) data from 304 LGDs and combined it with public-genomic data from 2183 modern and 22 ancient dogs. Their analysis suggests shared ancestry and extensive gene flow among modern LGD breeds, which they attribute to historic livestock migrations.

The authors  developed genome-wide SNP data from specific LGD breeds extended geographically from the Iberian Peninsula, through Europe, Italy, the Balkans, Western Asia, and Eastern Asia. While much of their analysis goes beyond my very simplistic understanding of genetics, their findings “strongly support the hypothesis that modern LGD breeds from East Asia and the rest of Eurasia are part of two lineages that have evolved independently for millennia.” I find this fascinating – humans who were raising livestock on rangelands in separate regions of the planet looked to dogs as protectors of their livestock! And they developed separate genetic lines with similar physical and behavioral traits!

Transhumance migration – the seasonal movement of people and livestock between high- and lowlands (following the feed) – seems to have played a significant role in the genetic flow between regionally-specificLGD breeds.Transhumance seems to have occurred across many cultures and geographic regions (and still persists today). The nomadic herders of the Mongolian steppes and the open-range sheep outfits of theIntermountain West would recognize eachother's day-to-day work.

A North American BWD (big white dog) walking along a game trail on the Tahoe National Forest.

Similar to today's Big White Dog breeding strategies, I can imagine multiple family groups taking their sheep and goats along adjacent (or overlapping) migration routes into (and back from) the high country. Perhaps my modern notions of livestock ownership doesn't exactly apply, but I suspect that each family would have tried to keep their livestock separate from the adjacent flocks. But the dogs would have mixed on the margins between these flocks! And they would have reproduced.

In his essay, “Let the Farm Judge,” Wendell Berry describes the powers of observation and adaptation employed by thousands of shepherds over thousands of years on the British Isles that allowed the development of 80 distinct sheep breeds and cross-breeds on a group of islands smaller than California. I can imagine similar observations and adaptations leading to LGD breeds in a transhumance system of livestock production. The dogs that stayed with their flocks – that protected livestock from wolves, brown bears, big cats, other dogs, and even 2-legged human predators – were noted by their owners. And allowed to reproduce – either with other dogs guarding the same flock, or with dogs guarding adjacent herds. If the offspring of these couplings didn't work, they left the gene pool.

The paper notes that reproductive management has not always been intentional in LGD breeds (nor is it today, for that matter). The authors' genetic analyses suggest that there is ongoing gene flow between LGD breeds and free-ranging dogs in specific geographic regions, stating, “Whereas breed clubs and registering bodies forbid dog owners from crossbreeding to dogs from other breeds for the purpose of maintaining traits, such restrictions are not imposed on working landrace populations and, as such, may be challenging to maintain in working dogs frequently left unattended.” In other words, dogs will be dogs – especially LGDs!

Finally, the authors discuss the relatively recent transition of some LGD breeds from working landraces to a registered system of pedigreed pets (notably the Great Pyrenees and Kuvasz breeds). In comparing pet dog genetics with those of working lines, the authors found a higher degree of inbreeding in pet dogs, likely reflective of the use of a handful of popular pedigreed sires.

These last two findings, as the authors indicate, suggest that selecting LGDs for specific guarding behaviors (attentiveness to surroundings, lack of prey drive, or submissiveness to livestock) and other factors (likelihood of roaming, or lack of aggressiveness towards people) may not be entirely (or even mostly) genetically based. In other words, reproductive isolation (that is, only breeding working LGDs to other working LGDs) may not the core mechanism for maintaining the specialized skills of LGDs. Assessing the behavior and performance of a prospective LGD during the puppy selection process becomes even more critical, given these findings – as does the bonding process. While I'm not suggesting that a well-managed bonding process will overcome poorly bred LGDs, this paper seems to confirm that genetics is just one part of a very complicated puzzle! It was a fascinating read!

Reno, an Anatolian Shepherd (probably a mix) guarding a lamb.

Coutinho-Lima, D., et al., "Multiple ancestries and shared gene flow among modern livestock guarding dogs." iScience. 110396. August 16, 2024.

As of this writing, we're on track for a "normal" rainfall year here in Auburn. Even if the rainy season ended with last week's storm, we'll finish the year at 90 percent of our long term annual average. In the high country to our east, the story is even better - the snow-water equivalent is sitting at 110% of the April 1 average. For the Nevada Irrigation District (NID), which serves western Nevada County and northwestern Placer County, low elevation rain and high elevation snowpack are a great combination - their reservoirs are full!

But despite all of this positive weather and water supply news, those of us who rely on NID water to irrigate pasture and other crops are facing the prospect of drought through the late spring and early summer (and possibly beyond). Earlier this year, a massive landslide damaged a portion of PG&E's South Yuba Canal below Spaulding Reservoir. In addition to moving water out of the high country for power generation, the canal allows NID to bring water from its upper watersheds down to Scotts Flat Reservoir east of Nevada City. From Scotts Flat, NID supplies farmers and ranchers throughout western Nevada County.

At the same time, PG&E's Spaulding 1 Power House also suffered significant damage, putting it offline. All of the water that NID moves down to Rollins Reservoir near Colfax comes through Spaulding 1 - and Rollins serves farmers and ranchers in North Auburn, Lincoln, and Sheridan.

At the moment, PG&E hopes to have a partial repair in place by early June, but NID will need to rely on it's low-elevation storage in Scotts Flat and Rollins to serve its irrigation customers. Without the ability to move water below Spaulding, NID projects that both Scotts Flat and Rollins will be significantly drawn down by mid-June. This week, PG&E indicated that some repairs might take much longer (stretching into August or September - more information here). Consequently, they are asking for voluntary conservation measures from both irrigation customers and treated water customers. As more information becomes available, I suspect that mandatory cutbacks may be on the table. The NID Board of Director will meet tomorrow to discuss the situation.

All of this brings ranchers to the unique position of managing for drought during an otherwise "normal" water year. Most of the recent droughts we've experienced in the foothills have been the result of a lack of precipitation and/or warm temperatures during the fall, winter, or spring months (see my post "A Taxonomy of Rangeland Drought" from February 2022). This year's "accidental" summer drought poses a different set of challenges. Many of us want to do our part to help NID conserve water during this emergency, but what are the options that best keep our pastures alive and our our livestock fed?

Traditionally, NID has conserved water during drought by asking customers to reduce the miner's inches they purchase - easy to accomplish simply by changing out the boards in our boxes. In thinking about my own sheep operation, reducing our 8 miner's inches to 6 would mean one of two options: first, I could simply try to put 66 gallons per minute out through a sprinkler system designed to deliver 88 gallons per minute, or second, I could leave one zone of the pasture unirrigated all season. At this point, option 2 makes more sense - I would optimize irrigation on the most productive portions of my pasture and let the least productive section go dry. In the long run, this means replanting that portion of the pasture (or permanently turning it back into less productive dryland forage).

An alternative that NID may not be equipped to accommodate would be to end my irrigation season earlier than normal - that is, to shut off the water to my pasture around September 1. The bulk of my pasture growth comes in the first 8 weeks of the irrigation season. When we hit the high temperatures and long days of July, forage growth goes into a "summer slump" and productivity declines. As the days grow shorter and the temperatures moderate (usually!) in September, our water demand falls and our pasture forages begin preparing for dormancy. With full water deliveries through the end of August, my pastures would likely survive if we didn't irrigate for the last 7 weeks of the season.

In either case, we'll need to think about balancing livestock demand with a diminished supply of summer forage. We can either reduce the number of mouths on the pasture, or purchase more feed (either hay or rented pasture) - or some combination of the two. One of our strategies has always been to match our production cycle with the forage cycle - we typically wean and sell our lambs as the spring flush of forage is ending (in essence, reducing our stocking rate to match a lower carrying capacity in the midst of the summer). Since we also rely on NID for our stock water, I'll need to think about strategies to ensure we're able to get water to the sheep through the summer, as well. NID will credit our accounts for this voluntary reduction in water, which could offset the cost of buying feed. In addition, a voluntary reduction this year will not impact our water deliveries in future years.

We've created a Drought Decision Support Tool to help you consider YOUR options. The first step is to inventory your forage resources for the coming summer and fall. Are you locked in, or do you have some flexibility in accessing additional leased pasture? Alternatively, are there some steps you can take to reduce your stocking rate this summer (like weaning your calves early or keeping fewer replacement heifers)? We've also developed a series of Excel spreadsheets to help you compare the financial impacts of culling females versus weaning early versus buying feed.

During the 2012-2016 drought, my mantra was "hope for the best, but prepare for the worst." While I certainly hope that PG&E is able to complete the repairs at Spaulding more quickly than they are currently projecting, I think it's time to prepare for the worst.

We have several outstanding workshops coming up in the next three weeks! Contact me at dmacon@ucanr.edu or (530) 889-7385 for more information!

Livestock Health & Wildfire Webinar (Thursday, March 28 - 6:00pm-7:30pm) - Virtual: Join Extension Veterinarians Dr. Gaby Maier, Dr. Rosie Busch, and Dr. Lais Costa, along with UCCE livestock advisor Dan Macon, for a webinar focusing on livestock health and wildfire. We'll discuss preparations for fire season, decision-making during a wildfire, and managing livestock health after exposure to fire and smoke. This webinar is free, but you must register to receive the webinar link. Register at https://ucanr.edu/livestockhealth&wildfire.

Ag Technology Showcase (Thursday, April 11 - 4:00pm-6pm) - Auburn, CA: Join UCCE and other farmers and ranchers to look at new agricultural technology! We'll talk about (and demonstrate) virtual fence technology, electronic identification systems, on-farm weather stations, soil moisture monitors, drones, and other technology designed to improve efficiency and reduce costs. Cost: $10/person. Register at https://surveys.ucanr.edu/survey.cfm?surveynumber=42435.