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Steve
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Riaan sent me this photo of the heart from a white rhino.



Anyone care to guess how much it weighs?

-Steve


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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
bobga
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Steve,
Could only take a wild guess. 38 pounds
bobga
 
Posts: 201 | Location: Georgia | Registered: 21 December 2003Reply With Quote
Aspen Hill Adventures
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27 pounds


~Ann





 
Posts: 19644 | Location: The LOST Nation | Registered: 27 March 2001Reply With Quote
Cunningham
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23 pounds.


Global Sportsmen Outfitters, LLC
Bob Cunningham
404-802-2500




 
Posts: 580 | Location: I am neither for you or against you. I am completely the opposite. | Registered: 23 December 2004Reply With Quote
Steve
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Nope.
Nope.
Nope.

I'll 'weight' for a few more guesses before giving any hints.

-Steve


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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
billinthewild
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186 - the whole package, heart and tracker.
jumping


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Posts: 4263 | Location: Pinetop, Arizona | Registered: 02 January 2006Reply With Quote
bulldog563
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32


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Posts: 2153 | Location: Southern California | Registered: 23 October 2005Reply With Quote
Hog Killer
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18.5 lbs

Hog Killer


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Posts: 4553 | Location: Walker Co.,Texas | Registered: 05 September 2003Reply With Quote
Riodot
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17 lbs? Razzer


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Posts: 933 | Location: Casa Grande, AZ | Registered: 11 June 2005Reply With Quote
retreever
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31 lbs.



mike


Michael Podwika... DRSS bigbores and hunting www.pvt.co.za " MAKE THE SHOT " 450#2 Famars
 
Posts: 6768 | Location: Wyoming, Pa. USA | Registered: 17 April 2003Reply With Quote
The Buck Stopper
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28 pounds.


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Posts: 54 | Location: Upstate NY | Registered: 24 December 2005Reply With Quote
Kamo Gari
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23 and a half lbs.*

*Includes onions and a nice brown sauce. Smiler


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Posts: 2897 | Location: Boston, MA | Registered: 04 January 2005Reply With Quote
BaxterB
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36 pounds and I bet thge damn thing only beat about 3 times per minute...
 
Posts: 7828 | Registered: 31 January 2005Reply With Quote
geese
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35?
 
Posts: 58 | Registered: 04 August 2005Reply With Quote
WyoJoe
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53.72 lbs.


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Posts: 1172 | Location: Cheyenne, WY | Registered: 15 March 2001Reply With Quote
LV Eric
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41


sorry about the spelling,
I missed that class.
 
Posts: 1407 | Location: Beverly Hills Ca 90210<---finally :) | Registered: 04 November 2001Reply With Quote
Andrew McLaren
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That sure is the smallest mature and adult-looking skinner I've ever seen!

Those who know: Is a Black Rhino heart weight-for-weight more or less the same as typical other large animals? I know that the true "away runners" (e.g. Red Hartebeest) have a proportionally bigger heart than a similar-sized "hider" (e.g.Nyala). But where does a black rhino heart size fit into the greater scheme of things?

In good hunting.

Andrew McLaren
 
Posts: 1799 | Location: Soutpan, Free State, South Africa | Registered: 19 January 2004Reply With Quote
ALF
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.
 
Posts: 7857 | Registered: 16 August 2000Reply With Quote
jpb
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quote:
Originally posted by ALF:
Andrew:

I respectfully disagree.

Heart size is directly related to body size
( 0.58 % of body mass )and any compensation in terms of differentiation between oxygen use is done by means of heart rate adjustment.

The 0.58% value is 95% accurate for a +/- 0.02 confidence value. Statistically it means that the value is about spot on for all mammals

Heart mass = 0.0058 body mass to the power of 0.98 ( Prothero J heart weight as function of body mass in mammals 1979 )

So by this if the rhino weighed in at 2150 kg which is the average the heart would weigh in at 12.47 kg = 27.49 pounds


Dang! Alf beat me to the post.

I teach this stuff in my university courses and before I got to the bottom and saw Alf's post I thought I would have good use of this knowledge on AR.

Heart mass, rate (and many other morphological aspects) are remarkably well-predicted by body mass.

Anybody interested should do a quick search (perhaps on Amazon.com) for Knut Schmidt-Nielsen and his books on how animals work, scaling and animals size.

John
 
Posts: 1006 | Location: northern Sweden | Registered: 22 May 2002Reply With Quote
Steve
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Well, So far you are all high. But a couple of you all came close. The weight was measured on a scale in the skinning shed. Riaan said that it might be off by a 100 grams or so.

Keep'em coming...

-Steve


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www.zonedar.com

If you can't be a good example, be a horrible warning
DRSS C&H 475 NE
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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
RIP
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Average weight of black rhino (700 to 1400 kg) = 1050 kg, according to my _The Kingdon Field Guide to African Mammals_.

But this must be a big one: 1400 kg?

Heart weight therefore: .0058 x 1400kg = 8.12 kg, emptied of blood.

8120 grams or about 17.9 lbs??? Nope, as Riodot guesses 17 lbs and that is still too high ... photography can sure make a bag of muscle look heavy ... bewildered

My SWAG: 16 pounds = 7264 grams? How close do we have to get before the answer will be revealed?
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
Steve
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Bingo! We have a winner! Rip with a guess of 16.0.

Riaan told me it weighed 7.3 Kg or 16.094 lbs.

I would like to send you on a safari of your choice, but alas I already spent the prize winnings on my own safari. You'll have to settle for the high praise and admiration of your peers.

-Steve


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www.zonedar.com

If you can't be a good example, be a horrible warning
DRSS C&H 475 NE
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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
RIP
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quote:
Originally posted by Steve:
Bingo! We have a winner! Rip with a guess of 16.0.

Riaan told me it weighed 7.3 Kg or 16.094 lbs.

I would like to send you on a safari of your choice, but alas I already spent the prize winnings on my own safari. You'll have to settle for the high praise and admiration of your peers.

-Steve

Close enough, eh? So that black rhino weighed about 1260 kg (or 2775 lbs) on the hoof.
jumping
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
ALF
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.
 
Posts: 7857 | Registered: 16 August 2000Reply With Quote
Steve
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quote:
Originally posted by RIP:
Close enough, eh? So that black rhino weighed about 1260 kg (or 2775 lbs) on the hoof.
jumping




Definitely sub 'minute of rhino'.

We'll have to wait for Riaan's comments on the actual animals size.


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www.zonedar.com

If you can't be a good example, be a horrible warning
DRSS C&H 475 NE
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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
RIP
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Oops, careless of me, after reading 17 lbs was too large, I did a mental flipflop to thinking of the smaller black rhino and it paid off. animal

So it was a smallish white rhino?

Kingdon gives the weight ranges by sex for the white rhino:

Female: 1400 to 2000 kg
Male: 2000 to 3600 kg
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
Steve
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Went back and quadruple checked my e-mail and it said white rhino.

Again, not sure about it's size.

They are big beasts. Especially when you're a few yards away and they're getting irritated that you're there.


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www.zonedar.com

If you can't be a good example, be a horrible warning
DRSS C&H 475 NE
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Posts: 2781 | Location: Hillsboro, Or-Y-Gun (Oregon), U.S.A. | Registered: 22 June 2000Reply With Quote
RIP
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quote:
Originally posted by ALF:
RIP et al:
... So in theory if you shot rendered a similar shot ( all things equal ) with say a 458 to a black rhino and a white rhino the black would take longer to die than the white cause the white is bigger hence a slower metabolic rate.

This is the very reason why bigger animals need bigger guns ( actually bigger wound volumes) to be dealt with.

Alf


Typo? I get the drift.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
Pete E
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Shouldn't there be a bullet hole in that heart somewhere?



Men of Harlech
 
Posts: 5684 | Location: North Wales UK | Registered: 22 May 2002Reply With Quote
RIP
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Pete,
See where the aorta, vena cava, and pulmonary arteries and veins are chopped off? The bullet did that. Wink Must have been one or more adequate shots anyway.
 
Posts: 28032 | Location: KY | Registered: 09 December 2001Reply With Quote
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