NUTRITION
Use supplemental feed to stretch hay and grass By Dr. Jim White
Even with late rains, much of Missouri is in drought
conditions. This is causing many cattle producers to feed next winter's hay
supply and sell lightweight calves. There is no point in selling lightweight
calves. The creep fed calves at our research farm are doing wellÑbetter than
3.0 ADG.
From 100 to 205 days of age, calves that are fed
high-concentrate diets convert 3.5 to 4 pounds of feed to a pound of
gain. So even when TrendSetter SLR, SLR blends or creep feed is $200, the
feed cost per pound of gain is $0.40/lb. Research and field work indicates that
early weaned steers can be fed from 100 days of age until slaughter weight of
1,150 to 1,200 lbs. at an average age of 340 to 360 days. Early weaned steers
fed out as calves tend to have overall feed to gain of 5 to 5.5 lbs., with five
out of six grading choice.
Offer 2 pounds of hay per day. Feed calves 1 percent of body
weight of Cattle Charge or SLR. Use a feed additive such as BovatecÑit improves
performance and stretches feed. If you are hand feeding a grain and supplement
high energy ration, don't increase intake by more than
1 pound of concentrate/head/day, even if the feed is cleaned
up in a couple of hours. When you increase the feed by a pound, make sure they
can eat it for 2 to 3 days before increasing them another pound. High energy
feed supports rapid gains; hay does not.
However, calves must be adjusted to the diet slowly; the
process will go faster if the calves were creeped. From 100 to 205 days of age,
calves will consume approximately 2 to 2.5 percent of their body weight every
day. Following 205 days of age, normal "age at weaning," calves should be fed
typical finishing diets containing approximately 85 percent concentrate and
12.5 to 14 percent protein. Feed intake will decline to about 2 percent of body
weight on a dry-matter basis. With growthy steers, gains should be
approximately 3 to 3.5 lbs. per day over the entire feeding period. For smaller
framed British cattle, an aggressive implant strategy works well for early
weaned calves to assure that animals don't finish at light weights.
Rather than buying expensive, hard-to-find hay, consider
limit feeding Cattle Charge, Bucket Rattler, StockGuard or SLR. Even a big,
1,300 lb. cow, can have her maintenance needs met with 15 lbs. of Cattle Charge and 4 lbs. of hay. She will likely be hungry,
but we have successfully limit-fed any number of animals, and we routinely do it for gestating sows.
Assume that hay is $150/ton, and Cattle Charge is $200. Then 15 lbs. of Cattle
Charge and 4 lbs. of hay costs $1.80. Offering free-choice hay, if she went
through 30 lbs. of it, would cost $2.25 per day. If there is enough pasture to
meet the cow's fiber requirement, then hay does not need to be fed. If the
calves are pulled off the cow, the concentrate feeding rate can be cut by 65
percent because the cow is not in milk. The table below compares the pounds of
dry matter needed from either Cattle Charge or a medium quality hayÑabout 0.52
net energy maintenance (NEm) to meet the daily needs of different cows with a
calf to their side.
Recommendations for starting cows on concentrate feed:
1. Take 3 to 4 days adjusting the Cattle Charge/Stock Guard
and decreasing hay to 3 to 4 lbs.
2. Feed intake is being limited, so make sure that cows have
enough space that all cows can eat at once.
3. If feeding corn with a supplement, feed corn whole. Whole
corn works better than ground corn when daily hay intake is limited to less
than 5 pounds on cows.
4. Use an ionophore like Bovatec in the feed.

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