Website Main Page
Forum Main Page

Welcome, Guest. Please login or register.
December 12, 2019, 10:10:34 PM

Login with username, password and session length
Search:     Advanced search
Buy & Sell Gamebirds online!
Click Here for TQP Auction & Ads
42418 Posts in 6015 Topics by 2375 Members
Latest Member: jg102
* Home Help Search Calendar Login Register
+  That Quail Place Forum
|-+  Raising Gamebirds
| |-+  Incubation
| | |-+  Chukar egg storage info
« previous next »
Pages: [1] Go Down Print
Author Topic: Chukar egg storage info  (Read 5107 times)
Reeves
Expert Contributor
Expert Member
******

Karma: 151
Offline Offline

Posts: 3269


« on: June 23, 2010, 09:01:50 AM »

Found this info on another site and thought it very interesting. Enough to save the info.
Not having to deal with this species for about 20 years, I do not read up on them...unless asked for specfic info required.....

Copy/pasted from that site:




http://anrcatalog.ucdavis.edu/pdf/21321e.pdf
Click directly on the egg storage section on left and read that specifically dealing with chukars, and check out the storage/hatch rate charts in the same section.
Even that author notes a higher hatch rate at [up to] 21 days rather than 1 week.
And turning chukar eggs during storage really cuts down on viability, as compared to coturnix in which turning during storage increases viability.

Taken from the PDF . . . remember, this deals specifically with Chukars

Clean eggs should be stored, large end up, on
trays or flats in a cool, well ventilated room
kept at about 55° F (12.8° C) at a relative
humidity of 70 percent. A unique feature of partridge
eggs is their ability to withstand storage
up to 28 days without appreciably affecting
hatchability (table 1). However, most breeders
prefer to set eggs every 7 days. Further studies
at the University of California show that eggs
need not be turned daily if the storage period
does not exceed 14 days (table 2).




TABLE 1. Influence of Length of Storage Time
on Hatchability of Game Bird Eggs.
Hatchability(%)
Holding period
(days) Chukar Pheasant Coturnix
1-7        78.4      58.1         57.4
8-14      77.1      41.7         60.0
15-21    79.4      17.6         25.7
22-28    66.0        7.1        14.4
29-35    37.7        0.0          4.2
36-42    22.3        0.0          0.0

TABLE 2. Effect of Turning Eggs During Storage
on Hatchability in Game Bird Eggs.
Hatchability (%)
Holding        Chukar              Coturnix
period
(days) Turned* Control Turned* Control
1-7         63.0     75.5      61.4      53.4
8-14       60.8     62.0      60.0      60.0
15-21     61.9     48.0      29.2      22.6
22-28     62.2     52.2      11.5      17.2
Average 61.9     59.4      40.5      38.3
*Eggs were turned through 90° twice a day during the hold
period


Embryo Mortality
A sampling of hatching eggs from each setting
should be candled on the seventh or eighth day
to check flock fertility and for other problems
that can be detected when “clear”-appearing
eggs are opened and examined for failure to
develop.
There are two peaks of embryo mortality for
chukar eggs (figure 4). The first peak occurs
between 3 to 5 days of incubation and most
mortality is due to a failure to form embryonic
structures or to a defect in embryonic and extraembryonic
organs and tissues.
The second and largest peak in mortality is
generally associated with several critical functions
occurring from the 20th to 24th day. These
functions include: change in position of the embryo
before pipping; utilization of the remaining
albumen; absorption of the yolk sac, and
change from allantoic to pulmonary respiration.
Logged
Riffecreek
New Member
**

Karma: 0
Offline Offline

Posts: 3

Personal Text

« Reply #1 on: June 23, 2010, 11:02:49 PM »

 agd2

It's 100% correct! I have noted that hatching % is increased after 1 week of 70 degree storage. I think it may have something with the water content in the eggs and it helps when they evaporate down a little. Remember these birds are native to hot dry environments!

I don't turn my eggs if they don't set for more than 10 days, and hatch 85% out of these.

But this is just my 2 cents and  s144
Logged
BuckShotMudder
New Member
**

Karma: 0
Offline Offline

Posts: 5

Personal Text

« Reply #2 on: June 24, 2010, 12:09:13 AM »

 ww2   This is great information!   s87  I have been a memeber of alot of gamebird forums for quite some time and of all the wbsites out there, this one is the best!  Anything anyone needs to know is in the archives on this forum, yet the great knowledge on here continues to provide more all of the time.  I love this site!

                            wsp1
Logged
DarrenS
Senior Member
*****

Karma: 5
Offline Offline

Posts: 67

« Reply #3 on: July 06, 2010, 01:55:00 PM »

That is good information and Rifflecreek I think your experience is really interested too. It's always fascinated me how the partridge eggs can be stored for longer periods with hatchability staying high. I have held chukar eggs for 2-3 weeks on occasion, with a good hatch rate, although for me no higher than when setting them weekly which is my normal practice.
Logged
Riffecreek
New Member
**

Karma: 0
Offline Offline

Posts: 3

Personal Text

« Reply #4 on: July 08, 2010, 06:23:54 AM »

That is good information and Rifflecreek I think your experience is really interested too. It's always fascinated me how the partridge eggs can be stored for longer periods with hatchability staying high. I have held chukar eggs for 2-3 weeks on occasion, with a good hatch rate, although for me no higher than when setting them weekly which is my normal practice.
Mark the eggs that are set at one day old or less when you set weekly and see what happens to those eggs!! It's better to pass these eggs up until the next week..


About half will hatch at day old when set, and 85% will hatch at 8 days old!
Logged
Pages: [1] Go Up Print 
« previous next »
 

Powered by MySQL Powered by PHP SMF 2.0.15 | SMF © 2017, Simple Machines Valid XHTML 1.0! Valid CSS!