Pregnant Cow

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How long does a cow's pregnancy last? Gestation length does vary by breed and by sex of the calf. Gestation length ranges from 279 to 287 days. For most breeds, 283 days would be common. Cows carrying bull calves tend to have a slightly longer gestation compared to cows carrying heifer calves. How long after a cow gives birth can she get pregnant again?
When was the first time a cow got pregnant?
When was the first time a cow got pregnant?
My first cow got pregnant during winter of the third year, and I bought animals very early... so have fun waiting. I had 4 cows in the same barn, by the way. You don't have to do anything (besides not turning off the pregnancy button), you just have to wait and hope. It does work for me, don't worry.
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How can I invest in a pregnant cow?
How can I invest in a pregnant cow?
Invest in a pregnant cow for just R18,730 and earn between R20,603 & R21,352. The farmer buys back the asset once it has fully grown at harvest. You, the investor, make a profit from the sale. 1. Invest Livestock Wealth allows you to invest in a pregnant cow that is well taken care of for you for only R18,730.
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How can you tell if a cow is pregnant?
How can you tell if a cow is pregnant?
Another way to detect pregnancy in a cow is by testing its milk for progesterone. After the cow has been inseminated or bred on at least 2 occasions, get some milk from it. After collecting milk from the cow, check the concentration of progesterone in it. If the progesterone levels are higher than usual, then the cow is likely pregnant.
farmhouseguide.com/signs-a-cow-is-pregn…
Can a cow be over fat during pregnancy?
Can a cow be over fat during pregnancy?
Cows should not be over-fat during pregnancy. Even after one or two cows are affected, further cases can be prevented by providing high quality supplementary feed. If pregnancy toxaemia occurs, remaining cows should be sorted into groups corresponding to body condition and fed accordingly.
agriculture.vic.gov.au/livestock-and-animals…
https://beef.unl.edu/faq/pregnant-cows
Перевести · How long does a cow's pregnancy last? Gestation length does vary by breed and by sex of the calf. Gestation length ranges from 279 to 287 days. For most breeds, 283 days would be common.
https://farmhouseguide.com/signs-a-cow-is-pregnant
Перевести · 5 Signs a Cow Is Pregnant 1. Heat/Estrus Signs. Normally, when cows are pregnant, their estrus cycle pauses. In other words, a pregnant cow would... 2. Bigger Udder in Heifers. Under normal circumstances, a heifer’s udder is not prominent. You’ll easily notice the... 3. Rounder Abdomen. In humans, ...
Перевести · 27.10.2020 · How long a cow’s pregnancy will last depends on the breed and age of the dam as well as the sex of the calf. In most cases, a normal cow’s gestation duration is approximately 283 days from contact with the bull. However, this period will frequently fluctuate from 279 to 287 days.
https://farmhouseguide.com/can-a-pregnant-cow-be-milked
Перевести · 29.10.2020 · A pregnant cow can be milked, and milk production starts during pregnancy. Toward the second and third trimester, the levels …
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https://agriculture.vic.gov.au/.../beef/breeding/pregnancy-toxaemia-in-cows
Перевести · In a pregnant cow there is a large demand for glucose by the developing calf in the last few weeks before birth. There is even greater …
https://livestockwealth.com/investments/pregnant-cow
Перевести · Invest in a pregnant cow for just R18,730 and earn between R20,603 & R21,352. The farmer buys back the asset once it has fully grown at harvest. You, the investor, make a profit from the sale. Invest now Calculate investment
https://enterprenuershub.wordpress.com/2017/02/27/care-and-management-of-pregnant-cow
Перевести · 27.02.2017 · Pregnant animals should be watched carefully, particularly during the last stages of pregnancy to avoid abortion due to fights or other physical trauma. During early stages of pregnancy, there is no need of special feeding for heifers. The system of feeding and management recommended for heifers …
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Gestation length does vary by breed and by sex of the calf. Gestation length ranges from 279 to 287 days. For most breeds, 283 days would be common. Cows carrying bull calves tend to have a slightly longer gestation compared to cows carrying heifer calves.
Cows that calve in a body condition of less than 4 (scale 1 to 9) have a longer post-partum interval.
First-calf cows have a longer post-partum interval than do mature cows.
Cows that have calving difficulty have longer post-partum intervals.
And, cows that lose weight and body condition after calving have longer post-partum intervals.
So with all that in mind, the postpartum interval, if conditions are ideal, for beef cows is between 50 and 60 days for an average of 55 days. First-calvers will be at least 10 days longer.
NOTE: Please see the October 6, 2015 update for more details and links to additional resources.
There needs to be some caution when feeding this forage to pregnant beef cows. If the forage is high in nitrites, then it needs to be mixed with a forage that is much lower in nitrates or a forage that does not contain any nitrates. Using other forages, the nitrates can be dilute to safe levels and fed.
The easiest way to dilute the forage that has the nitrates is to grind and mix with the other forages. Keys to feeding a forage that contains nitrates: Dilute the forage that has nitrates to a safe level. Adapt cattle slowly to a forage that contains the high nitrates. Never allow cattle that are hungry access to forages that contain high nitrates.
Pine needles consumed by cows during late pregnancy can cause abortion, or premature calving. Producers need to be aware that few options exist to decrease the risk of pine-needle-induced abortion other the physically isolating cows from exposure during late pregnancy. Exposure to any source of pine needles, whether they are fresh, dry, weathered, on the ground, on standing trees, or on fallen trees during late pregnancy should be avoided.
The culprit is isocupressic acid, a yellow, oily substance in pine needles. Identification of the culprit is the first step in developing an antidote. As far as I am aware, the antidote is not yet available. (Answer from 2008)
Pregnant cows can be vaccinated against bovine viral diarrhea virus (BVDV) using killed-virus (KV) vaccines. Modified-live virus (MLV) vaccines should be given when the cow is not pregnant — ideally 30-60 days prior to breeding. Some BVDV MLV products state on the label that they can be safely administered to pregnant cattle if the cattle had also received the vaccine prior to breeding.
Although some cattle producers prefer to vaccinate during fall work for convenience; it makes the most sense from a BVDV control standpoint to vaccinate prior to breeding so that cattle have the best protection during early pregnancy.
Not an easy task to accomplish. Usually the length of the post-partum interval (PPI, time from calving to the first estrous cycle) is 45 to 55 days in beef cows. If cows are in good body condition at calving, then the PPI would be in the 45 to 50 day range and if in poor condition, the PPI would be longer. First-calf heifers have a longer PPI compared to mature cows, about 10 days longer if she has no calving difficulty and is in good body condition. If cows are exposed to bulls (bull exposure) after calving, then the PPI is usually shorter by may be as much as 10 days shorter.
It has been documented in beef cows that uterine involution is not completed by 20 days post-calving, but the uterus is back to its non-pregnant size by 30 days post-calving. Another 10 or so days is needed to complete uterine involution and be prepared for another pregnancy. I don't think many cows will come into heat (estrus) before 35 day post calving.
You can "jump start" estrous cycles with progestins and gonadotropins (GnRH), but this will only happen in females that are close to begin cycling. There are synchronization programs for cows that use CIDR (progesterone) and GnRH (Cystorelin, Factrel, Fertagyl, OvaCyst). Use of these programs has the potential to induce estrous cycles in cows that are close to cycling.
So, nutrition is very important, have cows in at least body condition score 5 at calving and don't skimp on the groceries after calving. Ionophores such as Rumensin or Bovetec have a positive impact on the reproductive axis, at least there are experiments using the heifer that demonstrate this, so consider using an ionophore in the ration after calving. Expose cows to sterile bulls as soon after calving as possible. Jump-start the reproductive axis using a progestin and/or GnRH. These considerations are all for not if the cows have not been managed properly from a nutritional perspective.
Open cows are usually due to mis-management of the nutrition program. Minerals are important, but I rarely see large reductions in reproductive performance due to minerals alone, especially in Nebraska.
Here's a check list for you to help evaluate the reproductive performance of the herd.
Again, minerals are important and it sounds like you have this area covered.
Substantial research has been conducted contributing to the traditional guidelines of developing heifers to 60 to 65% of mature body weight at time of breeding. In general, studies evaluating different post weaning rates of gain or target weights have used either different amounts of feed, or different types of feeds varying in energy and/or protein content to obtain differences in rates of growth.
A review of these studies conducted over the last several decades along with new research indicates the association among BW, puberty and heifer pregnancy rate appears to be changing over time. In general, research reports published through the late 1980s have shown much greater negative effects of limited post weaning growth on age of puberty and subsequent pregnancy, whereas more recent studies indicate less of a negative impact of delayed puberty on pregnancy response. Several factors likely contribute to this change over time. Initial research in this area of interest corresponds to the industry shift from calving heifers at 3 years of age to calving at 2 years of age. Thus, selection pressure for age of puberty was probably minimal in the animals used in the early studies.
While selection intensity would have increased with the reduction in calving age of heifers, genetic progress would take time due to the long generation interval in cattle. In the mid 1980s, researchers identified the association between scrotal circumference in bulls and age of puberty in their female offspring. Since then, scrotal circumference has been used as an indicator trait for puberty. The change occurring in scrotal circumference from 1985 to the present indicates substantial progress has been made, and a similar response in age of puberty would be expected (see breed association websites for changes over time in EPD for scrotal circumference).
Indeed, the inability of heifers to attain puberty prior to breeding may not be as problematic as heifers reaching puberty before weaning.
There are data developed at the University of Nebraska were feeding replacement heifers to a traditional target weight increases development costs relative to more extensive heifer development. They reported similar pregnancy rates from the initial through fourth breeding season for heifers developed to reach either 53 or 58% of mature weight prior to breeding as yearlings. This demonstrated heifers developed to only 53% of mature weight could achieve similar initial pregnancy rates and retention compared to heifers developed to 58% of mature weight. In this data set, heifer development costs were reduced by $22 per head.
We have recorded no negative effect on reproduction when beef cows are supplemented with distillers grains as a protein or energy source, or for both protein and energy. In a number of experiments, we have used a distillers grains based cube as a major component of the supplement that is fed to cows prepartum while grazing cornstalks or dormant native range.
Following reports provide examples of research where distiller was a part of the supplement and we recorded the impact on cow and calf performance.
We've developed replacement heifers using dried distillers grains. Heifers were fed distillers grains at 0.6% of their body weight on a dry matter basis. Distillers fed heifers had greater reproductive performance compared to the control heifers. Following is a NE Beef Report on using distillers grains in heifer development diets.
We have not conducted research investigating the effect of feeding distillers to beef cows where the distillers may be 1/3 of the diet or more on a dry matter basis. I have worked with producers where they have fed close to 1/3 of the diet being distillers on a dry matter basis to beef cows and they have not reported any negative effect on reproduction. In these cases, distillers was fed with low to medium quality forages. I most cases, at least for beef cows, I can't think of many feeding situations where you would need to feed more than 1/3 of the diet being distillers.
Always monitor sulfur and fat (when fed with forages) intake.
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