[ SHOWGSD-L ] Re: Puppy Gender

  • From: Pinehillgsds@xxxxxxx
  • To: vande001@xxxxxxxxx, mcmuse@xxxxxxx, Showgsd-l@xxxxxxxxxxxxx
  • Date: Tue, 25 Apr 2006 11:31:58 EDT

 
 
In a message dated 4/25/2006 11:09:36 A.M. Eastern Standard Time,  
vande001@xxxxxxxxx writes:
Hi  Hallie...Let's see, back in the day when I was also showing Salukis, one 
of my  dear friends, Dr. Gertrude Hinsch, who is a geneticist for some 
university in  Fla. wrote a paper on puppy sex determination which I believe 
was 
based on  placement in the uterine horns.  Have patience and I will go up into 
the 
 attic and see if I can find it for you.  I can then scan it and email it  to 
you.  It has been a long time and, frankly I can't really remember  exactly 
what her article said.  Cynthia



I seem to remember something about a theory (maybe old wives tale!)  that the 
"female, XX" sperm was slightly more viable and there used to be the  thought 
when to breed in a heat cycle to increase the chance of girls...IF  that's 
true, wouldn't it be to breed early, a little pre-ovulation (then I  guess once 
the eggs were through the fallopian tubes the XY sperm would be  weaker, less 
viable and therefore less likely to be the "one"  that fertilized, etc.) for 
more girls?
 
But that really could be antidotal and with most of us breeding every other  
or every third day, it's probably just a roll if the dice, lol.
 
BTW, this is fun, I googled it and come up w/ a book re BT; 
 
"He was, as will be recalled, one of the earliest and most enthusiastic  
breeders of the Boston, and is now a scientific breeder of choice dairy stock.  
We 
had been discussing a number of problems in regard to raising stock, when he  
exclaimed: â??Mr. Axtell, I believe I have discovered the problem of sex 
breeding. If I want  heifer calves, I breed the cow as soon as she comes in 
season. 
If a bull calf is  wanted, the cow is served just before going out of 
season.â?? 
And said he, â??In  nineteen experiments I have only been unsuccessful once, 
and I think you might  try the same plan with your Bostons.â?? I have since 
done 
so, and although not  nearly the same measure of success has attended my 
experiments as his, yet by  breeding bitches at the close of the heat rather 
than at 
its commencement, the  number of males in a litter has materially increased." 
 
Kathy
three generations of Dual Titled Champions  live here!

visit _Pine Hill German Shepherd  Dogs_ (http://www.geocities.com/pinehillgsds
/)  

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