cryptorchid testicles in beef animals

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aj

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Is this a genetic problem? Is it tied to white color or the polled condition? Is a backward testes cryptorchid? I have a yearling bull with a backward looking deal...is this considered twisted. Is it a problem? Thanks in advance. ???
 

dori36

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aj said:
Is this a genetic problem? Is it tied to white color or the polled condition? Is a backward testes cryptorchid? I have a yearling bull with a backward looking deal...is this considered twisted. Is it a problem? Thanks in advance. ???

Cryptorchid generally refers to the condition of testicles which are completely undescended.  I'm not sure what you see that looks "backward".  Maybe a picture would be helpful.  Don't know you or if you have raised bulls before, but in case you haven't, be aware that in cold weather, the testicles are carried closer to the body.  It's nature's way of keeping them warm so the semen stays viable.  In the warm/hot weather, they'll be fully descended and appear  quite a bit larger.  Our resident Vet, DL, can, I'm sure, lend more expertise to whatever condition you might be seeing on your bull.

Cryptorchidism would be considered heritable.

 

kanshow

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I think in most species the occurance of monorchidism - only one descending is more likely than a total cryporchid.   I believe it is fairly heritable and both sire and dam contribute.    As far as things looking 'funny' right now, yes there can be a twist or a shorter cord that holds one up a little higher.   I'm not sure how this would effect fertility, but I would be concerned about it in the hot weather if he can't get one testicle down as far as it needs to be for cooling.     Scrotal circumference is related to fertility - bigger is generally  better.  
 

renegade

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a big angus breeder(i wouldn't say they have the best animals but their name gets them far) from around here brought the cattle for our district competition and one of their mature bulls had only one descended testicle. This was a few years ago so this was when it was my old advisor so he knew quite a bit about cattle. He was appalled that they would bring a bull like that and he said it was very  heritable.
 

aj

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Someone on the jpj thread thought twisted testes were a genetic deal. I thought maybe it wasn"t. I don't know
 

garybob

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aj said:
Someone on the jpj thread thought twisted testes were a genetic deal. I thought maybe it wasn"t. I don't know
You bet your best Denim 'n Leather (plus two bales of Prairie Hay), that this condition is highly heritable. Whether we, as Shorthorn breeders will admit it, or not, We've got a double-armload of it. So what, if other breeds have it. I don't care if EVERY other breed's got it. I want this unsightly problem outta OUR breed. Comprende?

It's time to identify a problem, and, then, eliminate it. In the July 07 "Big Issue" of "MaineTainer Country",....er....I mean,....Shorthorn Country, Dr Beever offerred to tackle the issue for Us. He inspects a lot more Shorthorns in the USA than any other single "Outsider" in the World. If He has noticed trouble billowing, well, Y'uns might are-TA start collecting scrotal data, along with pedigrees and blood samples, so he can get started. In the same issue of The Country,there is an article about a family down in Louisiana with a successful breeding program. In the photographs of their cattle, was a picture of a highly advertised Herd Sire in a lot with three or four cows. Look at His sack! There, in vivid color,proudly displayed, was the WORST scrotum I've ever seen on a bull in 37 years of both living and experience in the Cattle Industry.

If the American Angus Association had gone "wimpy" on Dwarfism Carriers (before DNA-marker Assisted Selection existed), would they be #1 today? I guarantee you, some very pretty show heifers and known herdsires got put 'tween the lettuce 'n the Mustard.
You have to be heartless, sometimes, in order to make genetic progress.

Tired of Cranial-Rectal Infusion,

Just my Opinion,
GB

 

aj

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Please don't sugar coat it...tell us how you really feel gb! I don't remeber using a twisted testicle bull before. Is one cord shorter or something? Does the old shorthorn lines have a problem?  Does it affect fertility or just look bad. Now I need to pour hydrogen peroxide on my thumb cause I rammed a needle in the top of it clear through the other side with l.a. 200. I wonder what the withdrawal time period will be for me? ;D
 

garybob

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aj said:
Please don't sugar coat it...tell us how you really feel gb! I don't remeber using a twisted testicle bull before. Is one cord shorter or something? Does the old shorthorn lines have a problem?  Does it affect fertility or just look bad. Now I need to pour hydrogen peroxide on my thumb cause I rammed a needle in the top of it clear through the other side with l.a. 200. I wonder what the withdrawal time period will be for me? ;D
It's just ugly. Those bulls seem to pass their Breeding Soundness Exams, just fine, but, I tend to think that these Bulls We've referrenced are a little less masculine, with straight, soft, silky hair on their faces ( not wooly, coarse, dense) if you look at their necks and heads.
I'm glad it wasn't Micotil!!!

GB
 

aj

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Yea I think I've had a pretty recent tetnaus shot. It wasn't so bad. After my wife stopped laughing she went ahead and doctored the bull for me.
 

knabe

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garybob said:
If the American Angus Association had gone "wimpy" on Dwarfism Carriers (before DNA-marker Assisted Selection existed), would they be #1 today? I guarantee you, some very pretty show heifers and known herdsires got put 'tween the lettuce 'n the Mustard.

which dwarfism, snorter or the other one or fawn calf?  been looking for a similar history to the battle of the bull runts in herefords for angus.  there's something brewing in the angus, awful hush hush with a test paid for by the association and not yet available for public use, though that may have changed or is going to change shortly.
 

garybob

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knabe said:
garybob said:
If the American Angus Association had gone "wimpy" on Dwarfism Carriers (before DNA-marker Assisted Selection existed), would they be #1 today? I guarantee you, some very pretty show heifers and known herdsires got put 'tween the lettuce 'n the Mustard.

which dwarfism, snorter or the other one or fawn calf?  been looking for a similar history to the battle of the bull runts in herefords for angus.  there's something brewing in the angus, awful hush hush with a test paid for by the association and not yet available for public use, though that may have changed or is going to change shortly.
Knabe, i was referring to the "snorter dwarfs", that were more prevalent during the '50's and 60's.
Australia is having a huge problem with the "fawn calves", within their Angus population. This condition is linked to 2 US-bred Sires that made thier way "Down Under" through Artificial Insemination.
 

garybob

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strawroanlova said:
??? ???what does cryptorchid ???
In a nut-shell, Buddy, we are talking about various symmetry and (percieved)fertility problems associated with abnormal scrotal development.

GB
 

red

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From Merckvet Manual

Cryptorchidism is a failure of one or both testicles to descend into the scrotum and is seen in all domestic animals. It is common in stallions and boars and is the most common disorder of sexual development in dogs (13%). Predisposing factors include testicular hypoplasia, estrogen exposure in pregnancy, breech labor compromising blood supply to the testes, and delayed closure of the umbilicus resulting in an inability to increase abdominal pressure. Bilateral cryptorchidism results in sterility. Unilateral cryptorchidism is more common, and the male is usually fertile due to sperm production from the normally descended testicle. 
  Cryptorchidism
The undescended testicle may be located anywhere from just caudal of the kidney to within the inguinal canal. Abdominal testicles produce male hormones, and cryptorchid animals have normal secondary sex characteristics and mating behavior. Because of the inherited nature of the condition, unilateral cryptorchids should not be used for breeding. After puberty the retained testis becomes hypoplastic, degenerate, and fibrotic. Affected animals should be castrated as sertoliomas, seminomas, and interstitial cell tumors tend to develop within cryptorchid testicles and because of the heritability of the condition. 
Some cases of hereditary hypoplasia of the ovaries and testes are associated with a single recessive gene with incomplete penetrance. It has been described in Swedish Highland cattle and has marked association with white coat color; the incidence has been much reduced by a controlled breeding program. Bilateral, unilateral, partial, or total hypoplasia may be seen. A condition similar to the human Turner’s syndrome, with severe bilateral ovarian hypoplasia associated with chromosomal abnormalities, absence of follicles, and fibrosis with consequent infertility has been described in grade mares and in Thoroughbreds, Arabians, Welsh Ponies, Tennessee Walking Horses, Standardbreds, American Saddlebreds, Paso Finos, Belgians, Quarter Horses, and Appaloosas. Affected mares may be smaller than average and show either an absence of estrous cycles or only occasional estrus. They have a small flaccid uterus, a flaccid cervix with an open os, and small to very small ovaries. The ovaries are smooth and firm and have no follicles or corpora lutea. Cytogenetic studies may be indicated in infertile mares that show some or all of the above signs. The most common chromosomal abnormality in these mares is an absence of one of the sex chromosomes, and these animals are designated XO. There is no treatment.
Prolapse of the prepuce is a common defect in bulls, particularly in Bos indicus cattle. In B taurus cattle, it is common in polled beef breeds. A long, pendulous sheath, a large preputial orifice, and absence or poor development of the retractor prepuce muscles are predisposing inherited anatomic abnormalities. Prolapse of the prepuce predisposes the animal to injury, which can lead to abscess formation, scarring, adhesions, or phimosis. Surgical correction of the prolapse is possible, but as genetic predisposition may play a role, castration should be carefully considered. 
Penile deviation is a common cause of copulatory failure in bulls. Two types of penile deviation are described— premature spiral deviation of the penis (corkscrew penis) and ventral deviation of the penis. Both conditions are caused by insufficiency of the dorsal apical ligament of the penis. Trauma is rarely involved. Premature spiral deviation of the penis is the most common penile defect in polled beef bulls and has been reported in most beef and dairy breeds. Spiral deviation is abnormal when it occurs prematurely and prevents intromission on more than one occasion. In affected bulls, the condition can be mild to severe, and premature spiral deviations of the penis may range from <25% to >75% of all services attempted. This may occur within one mating season or over several seasons. Most affected bulls develop the defect between 3 and 6 yr of age. In ventral deviation of the penis, the free part of the penis curves downward and prevents intromission. Deviations of the penis are diagnosed by careful observation of bulls at the time of service or during test mating. Surgical correction can be done, but should not be performed if inheritance is possible.
The opening of the penile urethra may be dislocated on the ventral surface of the penis (hypospadias) or on the dorsal surface (epispadias). 
Persistent penile frenulum is not uncommon and is regarded as an inherited defect. Affected bulls are unable to protrude the penis from the sheath and, in most cases, cannot achieve intromission. Attachment can be minimal (eg, 0.5 cm), or the preputial mucosa can be attached the full length of the ventral raphe of the free part of the penis. Surgical correction should not be performed in bulls intended for seedstock breeding. Many male foals may appear to have a persistent frenulum at birth, but the condition resolves within a few days. If the condition persists, correction should not be attempted until the foal is at least 1 mo old. 
Short retractor penis muscle may occur congenitally or after injury to the penis or prepuce. Affected bulls have normal libido, but during attempted service the penis is only partially protruded from the sheath and the ejaculatory thrust does not occur. Failure of erection in bulls may be a congenital condition but is generally a sequela of trauma and/or hematoma of the penis. 

Hermaphroditism or intersexuality is occasionally described in goats and pigs. True hermaphrodites are rare and have both ovarian and testicular tissue and exhibit anomalies of the external genitalia. The chromosomal makeup is variable and may be a chimera: mosaic, XX, with or without the SRY gene, or unknown. Pseudohermaphrodites are more common; they have one or the other type of gonad and an anomaly of the external genitalia that resembles, to some degree, that of the opposite sex. The most common intersex condition, the male pseudohermaphrodite, has testicular tissue in the abdominal cavity or beneath the skin in the scrotal region, and external genital organs that resemble those of females. Miniature Schnauzers, Basset Hounds, and, rarely, Persian cats may present with pseudohermaphroditism when affected by persistent paramesonephric (müllerian) duct syndrome. Undescended testes are attached to the uterine horns and the vasa deferentia are located in the wall of the uterus. There are bilateral oviducts, a complete uterus with a cervix, and a cranial portion of the vagina. Bilateral scrotal testes or unilateral or bilateral cryptorchidism may be present. Affected animals can present clinically with pyometra, urinary tract infection, prostate infection, or Sertoli cell tumor. The diagnosis is confirmed by presence of a 78, XY chromosome constitution, bilateral testes, and the presence of all paramesonephric (müllerian) duct derivatives. Androgen-dependent masculinization is that of a normal male. Treatment is limited to castration and hysterectomy. The defect is inherited as an autosomal recessive trait in Miniature Schnauzers, and both females and males can be carriers. Homozygous affected dogs with a descended testis are generally fertile and capable of transmitting the trait to all offspring.
The paramesonephric ducts are paired embryonic ducts that develop into the anterior vagina, cervix, uterus, and oviducts. Segmental aplasia of the paramesonephric ducts results in anomalies of those organs. Ovarian development is normal. Accumulation of secretions proximal to the obstruction occurs secondarily. Variable degrees of persistence of the hymen is the most commonly reported paramesonephric duct anomaly; it may result in development of a fluctuating swelling caused by the accumulation of uterine secretions that is palpable per vagina. Segmental aplasia of the cervix may result in either mucometra, hydrometra, or cystic enlargement of the cervix. Segmental aplasia of the uterus may involve one horn (resulting in a condition called uterus unicornis), both horns, or only part of one horn (which may result in cystic dilatation of the uterine horn anterior to the area of dilatation). Developmental anomalies involving the paramesonephric tracts occur in all breeds, but the hymenal defects are most common in white Shorthorn cattle (white heifer disease). 
   
 
 
 
 
 
 

 
 


 




 
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