Nutrition

Too Much, Too Early

– Justin Sexten, Ph.D., Director, CAB Supply Development

Fall- and spring-calving herd managers don’t often find themselves facing the same decision as those who buy calves for backgrounding, but this is one of those times. Should you implant the calves and if so, what product should be used? Answers will vary, of course.

It’s simple if increasing gain is the singular goal. Given adequate nutrition, the return on investment to growth-promoting implants makes it one of the best dollars you can spend. But let’s examine that given: are there adequate dietary resources to support the implant? Data suggests calves need enough nutrition to gain at least a pound per day to make any implant pay. Few operations plan for gains lower than that, but for those who try to hold calves back to change marketing windows, this may be a consideration.

Another reason implants may not make sense is a contradiction with your marketing plans, such as those who sell natural or non-hormone treated calves (NHTC) at a premium. Implanting would limit marketing to conventional outlets, where facts may not support perceptions. I hear of ranchers forgoing the calf performance from implants because they think non-implanted calves bring more in the everyday market, but there’s evidence to the contrary. Calves that are verified Natural or NHTC may Continue reading →

The Real Cost of Limiting Nutrients

– Dr. Les Anderson, Beef Extension Specialists, University of Kentucky

Fall is rapidly approaching and all cow-calf producers need to access the body condition score (BCS) of their herd. Spring-calving cows are nearing weaning time and the fall is the most economical time to put weight back on. Now is also a key time to manage BCS score in fall-calving cows. Most realize the link between body condition score and reproductive rate but what is the economic impact of allowing BCS to decline? Each year producers faced the decision of how much money should I put into my cows? Can I afford to feed them? So, what is the cost of letting your cows get thin? What is more cost effective; reducing costs by limiting nutrition to your cows and living with reduced reproductive performance or feeding your cows to perform?

Let’s use a real world example. The farm we will discuss had 100 fall-calving cows. The average body weight of these cows was about 1300 lbs. at a BCS of 5. These cows calved in good condition, averaging a BCS of a nearly 6. However, lack of rain resulted in limited pastures and the producer began to feed hay approximately September 1st, which coincided with the onset of calving. The hay was below average in quality (TDN of 48, CP of 7%). Money was tight for this operation so they made the decision NOT to supplement these cows. Making the assumption that these cows were average lactating cows and that they would consume about 27 pounds of hay (as fed) daily, the hay provided only 82% of their maintenance energy needs and would result in a loss of one BCS in about 57 days. This producer decided to synchronize and AI his cows. On November 21st when the timed AI was performed, the average BCS had decreased, as predicted above, averaging a strong 4. Remember each BCS equals about 75 pounds so these cows were losing weight rapidly. After the insemination, the Continue reading →

With Hay Quality Lacking, Determine Your Supplementation Needs

– Jeff Fisher, Chris Bruynis, Jeff Moore, and Steve Boyles, Ohio State University Extension

Similar to 2015, rain in the spring extending through early summer delayed hay harvest in many areas of the state. Additionally there were some high temperatures that caused an increase in the rate of maturity of forages before they could be harvested. For example alfalfa grown at 63°F may take 52 days to reach early bloom but only 21 days at 90°F. As forages mature, there is an increase in cell wall content and a decrease in the digestibility of the cell wall. So for some producers, all these factors came together to create the perfect storm that led to significantly lowered forage quality.

In 2015 a group of Extension Educators in Pike, Ross and Gallia counties worked with forty-seven livestock producers in obtaining hay samples for nutritional analysis that fall. There were a total of eighty-one hay samples collected. Suspecting we will see similar quality when this year’s forage sampling is done, the following are a subset of those 2015 samples with example diets to meet beef cow dietary requirements for late pregnancy and lactation.

The following diets are for a 1300-pound cow in the last trimester of pregnancy. The table includes Continue reading →

Consistency is Key to Proper Feed Bunk Management

– Erin Laborie, University of Nebraska Extension

The overall goal of feed bunk management is to maintain consistency within the feeding system. Photo by Troy Walz, University of Nebraska Extension

Proper bunk management is the art of matching feed deliveries to the amount of feed cattle need for optimal performance. Underfeeding cattle results in poor gains and feed efficiency, longer days on feed, and reduced carcass quality. On the other hand, putting more feed in front of cattle than they can handle leads to digestive upsets, crashes in intake, and wasted feed (Pritchard et al., 2003). Considering an improvement of 0.1 pound in feed to gain (F/G) is worth $10 per head at the feedlot, proper bunk management should not be Continue reading →

You Finally Got the Hay Made, How Good is It?

– Mark Landefeld, ANR Educator, Monroe County

“You gotta make hay while the sun shines”. How many times have you heard that said throughout the years? We’ve had some sunshine this spring/summer, but making first cutting “dry” hay has really been challenging for most farmers this year. Getting two or more days in a row without rain has been rare in the spring of 2018.

Making timely first cutting dry hay in Ohio always has challenges with weather it seems, but this year it definitely has been more than usual. Extremely good, high quality hay is made from young leafy forage at boot stage, not fully mature long brown stems with dried up seed heads like we have been seeing everywhere now in July. The combination of maximum yield and highly digestible dry matter is usually obtained at the late boot, to early head stage of maturity for grasses and in the mid-to-late bud stage of maturity for our legumes. Forages that can be harvested at that time, most often meet nutrient requirements of beef cattle, but accomplishing that this year has really been the exception, not the rule for most producers.

Beef cows do not require the same level of nutrition dairy cows need to maximize production. However, this year is going to be challenging to have enough nutrients in most beef producers first cutting hay to maintain the cow’s minimum requirements without Continue reading →

Heat Stress in Feedlot Cattle

– Steve Boyles, OSU Extension Beef Specialist (This article derived from: Kevin F. Sullivan and Terry L. Mader. June 2018. Managing heat stress episodes in confined cattle. Vet Clin Food Anim 34: 325–339 https://www.sciencedirect.com/science/article/pii/S0749072018300161)

Feedlot cattle consuming large amounts of feed and gaining rapidly generate significant amounts of metabolic heat begin to challenge and animals ability to handle heat stress. An animal can endure high ambient temperatures if heat gain during the daytime hours is balanced with heat loss during the nighttime hours. If nighttime ambient temperatures remain high, especially if the relative humidity is also high, there is no time for recovery.

Assessing Heat Stress in Feedlot Cattle

The ability to predict a heat stress event allows for preparation and mitigation of the effects on animal well-being and animal performance. Temperature-Humidity Indexes have been used for more than 40 years to assess heat stress in cattle. There are also Heat Load Indexes for cattle. Such indexes exits in Continue reading →

Water; Vital to Beating Summer Heat

– Aerica Bjurstrom, UW-Extension Kewaunee County

Water is the most important nutrient an animal requires and consumes daily. Depending on weight, production stage, and environmental temperature, cattle require varying amounts of water. A University of Georgia publication suggests for cattle in 90 °F temperatures, a growing animal or a lactating cow needs two gallons of water per 100 pounds of body weight. A nonlactating cow or bull needs one gallon of water per 100 pounds of body weight. Using these figures, a single cow/calf pair can require roughly 25 to 40 gallons of water daily. A nursing calf with have a portion of its daily water needs from its dam’s milk. Providing multiple water sources or tanks in the pasture will increase consumption and decrease competition and fighting at the water tank.

Water quality is just as important as water volume intake. Compromised quality can reduce water intake, which can lead to illness and metabolic issues. Testing water for salinity, nitrates, and sulfates is recommended. Cattle prefer water that contains small amounts of salt, however, water that contains high amounts of total dissolved salts (TDS) can result in reduced performance. Guidelines suggest that water containing Continue reading →

Feeding Sprouted or Otherwise Damaged Wheat to Beef Cattle

– Steve Boyles, OSU Extension Beef Cattle Specialist

In light of the delay in wheat harvest caused by the weather, last week I was asked if sprouted or otherwise damaged wheat had much feed value in a beef ration. The answer is, “Yes, it does.”

Wheat can be used to replace a part of the grain ration when protein prices are high and wheat is relatively cheap compared to other grains. As a general rule, limit mold-free wheat to 50% of the grain portion in finishing diets. However, some experienced feeders have used larger amounts of wheat. I tend to recommend lower levels to people not familiar with feeding wheat though (fast fermentation). Lower quality wheat: Limit wheat to 40% of dry matter or 50% of corn, whichever is highest. Take a longer time to build up to full feed than you would with corn. I would not recommend using wheat in high grain diets on Continue reading →

Short Pastures and Supplementation Considerations

– Jeff Lehmkuhler, Extension Beef Cattle Specialists, University of Kentucky

Several county Ag Agents have reported producers asking what to do supplement-wise for grazing livestock with the slow pasture growth this spring. A lot of this is related to the fact that we are roughly 100 growing degree days less this year than the same time frame a year ago. Combine this with the wet weather leading to muddy feeding conditions, producers were happy to see cows begin to pick grass. Low hay stocks also contributed to producers pulling hay away a bit prematurely. Cooler temperatures has resulted in slow pasture forage growth and cows are nipping it off faster than it is growing. This situation has led to several questions regarding supplementing grazing cattle under these conditions and I’ll try to share a few things to consider.

1) No free lunch – Grazing energy expenditure based on research is significantly greater than the energy required to walk, stand, and other activities. A cow grazing an acre would expend more energy than simply walking that same distance. The energy to Continue reading →

Early Path to Quality Beef

– Justin Sexten, Ph.D., Director, CAB Supply Development

You know the role health and nutrition play in feedlot performance, carcass quality grade and profitability. Yet many readers challenge the idea that these benefits can be realized at the ranch, unless they retain ownership beyond the farm or ranch gate.

The increasingly transparent market with buyers tracking results by source underscores that producing high-quality beef takes a systematic approach no one segment can afford to ignore. Ever. The time required to influence your herd’s genetic potential is measured in years, so managing for quality is always important.

It takes four years, really: Select a superior sire, gestate for nine months and nurse the cow for another seven months. Develop heifers prior to breeding for seven months, breed those superior replacements, repeat the nine months of gestation and add Continue reading →