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Answered 2010-07-08 18:28:58

The common rule of thumb is that 10% of heifers born with a twin brother are fertile, leaving only 90% of heifers in a brother-sister twin combination sterile as freemartins or hermaphordites.

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Does a heifer still mate when pregnant?

False heats are rare in cows or heifers that are already bred. If a heifer does go into heat when pregnant, it only occurs once or twice and that's it. But normally, no, a heifer won't still mate when she's pregnant.


What are female calves called?

Heifer calves. When they reach weaning age, the "calf" or "calves" part is dropped and they are simply called heifers. (Heifers become cows after they have one or two calves.)


What is the earliest age for a heifer to get pregnant?

A heifer can be bred at 6 months of age and be pregnant from the time she is bred to the time she has to give birth which is at 12 months of age. This is much too young for a heifer to be pregnant, let alone bred, and often heifers like these, if caught at the right time, need to be aborted as soon as possible. The earliest that a heifer should be bred is between 15 and 20 months of age, depending on the breed. Jersey heifers, for instance, can be bred at around 13 to 15 months, whereas Brahman heifers won't reach puberty until they are 18 months of age and thus can be bred when they're around 20 months of age.


Can a heifer be a bull?

No. Heifers are female, bulls are male. Heifers cannot change their sex like some other creatures can. However, heifers that were born with a twin brother and shared the same placenta with her twin brother can develop bull-like characteristics. These are called Freemartins or Hermaphrodites. Hermaphrodites are 100% sterile, and a hermaphrodite heifer is a heifer that has both male and female sexual characteristics but can not fully become a bull like REAL bulls are.


How do you tell when a heifer is in heat?

If there are several heifers together an in heat heifer will often mount another heifer that is in heat as well. If the heifer is alone it will be difficult to determine without the use of palpation or ultrasound.


What is opposite gender of bulls?

The opposite of bulls are cows or heifers. Bulls are male, cows are female. The difference between a heifer and a cow is that a cow has been pregnant.


What is a bred heifer?

A heifer that is pregnant.


How old does a bull calf have to be to get pregnant?

A bull calf is male with male reproductive organs, which means he cannot get pregnant. Only females (heifers, possibly heifer calves and cows) can get pregnant. Thus, your question has no merit whatsoever.


When is a heifer calf sexually mature?

Depends on the breed and the individual heifer. Most heifers are sexually mature by the time they are around 15 months of age; others will be sexually mature when they are 24 months of age, like with Brahman heifers.


How do you use the word heifer in a sentence?

Like this:"The farmer had a prized heifer in the cattle shed.""The heifer was bred by the herd bull yesterday.""The cow gave birth to a heifer calf!""Those blasted heifers got out again!!"


What is the male of heifers?

The male counterpart of a heifer would be a bullock or a young virgin bull.


Are twin heifers sterile?

No. A heifer would only be sterile if she was twinned with a bull calf.


Do heifers produce milk?

A heifer does have to be bred and within weeks of giving birth, begin producing milk. It is rare, but I have seen a calf from a different dam begin to suckling a heifer six weeks before the heifer gave birth. And the heifer come into her milk. Not ideal, the heifer needed all her milk especially the colostrum for her own calf. The milk stealing calf had to be separated from the heifer.Answer 2:No. Heifers only produce milk when they are close to calving after they've been bred. However, there was one occaison when I seen a heifer producing milk when she was NOT bred, and was being suckled by another heifer of the same age. This in itself is very rare, as 99% of heifers that are not bred are not producing milk.


Can a heifer be male?

Definitely not. Heifers are young female bovines, never male. The opposite of a heifer would be a young bull, which is a young male bovine.


If a cow has twins can the twin get pregnant?

Only if the twin is a heifer and if that twin has been tested negative for being a freemartin (IF she had been twinned with a bull calf). Twin heifers are both highly likely to get pregnant when they reach puberty.


Is a pregnant heifer a heifer or a cow?

A pregnant heifer is still a heifer because she still hasn't had a calf yet. She only becomes a cow after she's had her calf or after her second calf.


Can a heifer get pregnant without heat?

What do you mean "without heat"? Heifers don't require it to be warm or hot outdoors to be able to get bred if that's what you mean. They can be bred when it's cold out too.


How long is the gestation of a calf?

A heifer calf shouldn't be pregnant to begin with. She is much too young to be pregnant. She would have the same length of gestation as a heifer bred at the right age (which is around 285 days long), but she would have a really hard time giving birth to that calf without assistance. Please see the related question below for information on pregnant young heifers.


What do you call a heifer after it calves?

Most producers call her a first-calf heifer, or a first-calver. Some think that heifers, after they've given birth, can then be called a cow.


When do first-time calving heifers start to lactate?

It is highly variable with heifers. A heifer can start to bag up anytime from two months prior to or right after calving.


Is a heifer a pregnant cow?

No.


Is a cow pregnant if its udders are full and all the other heifers udders are normal?

A cow is a mature female bovine that has had a calf. A heifer is a female bovine that has not had a calf. Therefore there are two possibilities: one, the cow you are referring to already had a calf and is still lactating, and she's in with the heifers (that are probably just weaned) to keep them calm. Two, yes she could be, but it's hard to say since you are referring to her as a cow and not a heifer.


What is the male equivalent of a heifer?

A heifer is a female calf and there is no male term. In many cases, females will be referred to exclusively as heifers and males exclusively as calves.There's no such thing as a male heifer. Male cattle are either bulls or steers.


What is the difference between cows and heifers?

Heifers are young female bovines at or past weaning age that have never had a calf but may be pregnant with their first calf. Cows are mature female bovines that have had at least two calves.A heifer is a female bovine who has never given birth to a calf while a cow has and is older.


What is the difference between a calf and a heifer?

A calf is a baby bovine of any gender, while a heifer is a female bovine. Heifers can be specified as heifer calves, yearling heifer, or a first time heifer (when she has her first calf). After giving birth to the second calf she will then be termed as a mature cow.A calf is any young bovine. A heifer is a young cow (female) who has not calved yet.