Can you AI heifers?
Many producers of purebred and commercial beef cattle can profitably utilize artificial insemination (AI) on virgin heifers or on the cow herd or both. Success with artificial insemination requires attention to detail in all areas of herd management.
What is the average weight of heifer on time of mating?
The main cost of mating heifers as yearlings is the need to feed weaner heifers so that they achieve a minimum liveweight at mating. British breed heifers should weigh at least 275-280 kg at joining, while the later maturing European breeds should weigh at least 320 kg.
What weight should an AI heifer be?
At breeding time, heifers should weigh at least 65-70 percent of their mature body weight. At calving time, they need to weigh at least 85 percent of their mature body weight. A common misconception is that you can reduce calf size and calving difficulty by restricting a heifer’s nutrition.
How much weight should a heifer gain per day?
1.5 to 2.5 pounds per day
Usually gains will range from 1.5 to 2.5 pounds per day.
At what age can you AI a heifer?
12 to 14 months
Most heifers will reach puberty and be bred by 12 to 14 months of age and will be between 55% and 65% of their mature weight when they first begin to exhibit estrous cycles.
What is the success rate of AI in cattle?
The overall expected pregnancy rate (AI + cleanup bulls) is 90 percent for cows and 85 percent for heifers. The average weaning weight is assumed to be 575 pounds, with the calves selling for an average of $130 per hundredweight. Five bulls are required for adequate breeding in a natural service situation.
What weight should I start finishing cows?
This may be 800-900 pounds, depending on gain rate and feed conversion. Buy Standard to Good feeder grade 400-pound heifers and full feed a finishing ration until they yield a slaughter grade of Good or weigh about 800 pounds. Livestock and Meat Marketing News.
How much weight will a calf gain per day on grain?
A full feed of good-quality corn silage supplemented with protein, minerals and Vitamin A will produce from 1.5 to 1.8 pounds of daily gain on a 400- to 500-pound calf. Some grain additions will usually be needed to get 2.0 pounds daily gain.
What is the best time to AI a cow?
Highest conception rates for A.I. occurred between four and 12 hours after the onset of estrus (Table 1). Cows inseminated 16 hours after the onset of estrus had lower conception rates than cows bred between four and 12 hours after the onset of estrus.
Is AI more profitable than natural breeding?
It was concluded that even under less than average management conditions, AI is more profitable than the best NS scenario. The efficient communication of this message should be a primary concern of the AI industry.
How much do heifers weigh when breeding?
at breeding in a traditional system, but only 709-806 lbs., according to the recent research. However, I’d caution readers that if the average weight of your heifers is 709 lbs.
What is the difference between bred and mature bred heifers?
Bred heifers require a little more attention than the mature cows. It is much easier to provide adequate care if they are not co-mingled with the mature cow herd. Additionally, this will help you to watch them during calving time and provide additional supplemental feed when necessary.
Can a baby be too big for a heifer?
Adequate nutrition to the heifer will not cause a fetus to become too large – genetics predominantly dictate this. In order for a heifer to experience dystocia, she would have to be in a BCS of 8 or more.
What are the benefits of lower breeding weight targets for heifers?
Other benefits to the lower breeding weight target for heifers are their improved efficiency during the winter feeding period, as well as increased gains in the subsequent grazing season.