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Last modified
7/14/2009 5:02:32 PM
Creation date
5/17/2009 11:31:41 PM
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UCREFRP
UCREFRP Catalog Number
8010
Author
Montagne, M.
Title
The Grand Valley Propagation Facilities - 1997 Annual Report.
USFW Year
1998.
USFW - Doc Type
Grand Junction, CO.
Copyright Material
NO
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<br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br />I <br /> <br />T bl 3 <br /> <br />H t h' <br /> <br />f <br /> <br />b k k . 1996 <br /> <br />a e . a c ID~ success 0 razor ae sue ers ID <br />Lot Hatching Initial hatch date Number of fish Imprinting <br /> success(% ) produced Chemical <br />9601Aa 25 960510 2632 Morpholine <br />9601C 40 960509 922 none <br />9602A 25 960510 6363 Morpholine <br />9602C 60 960509 2620 none <br />9603A 25 960510 7491 Morpholine <br />9603C 30 960509 600 none <br />9604 03 960512 10 PhenethylC <br />9606 03 960512 21 Phenethyl <br />9607 03 960512 45 Morpholine <br />9609 40 960516 725 Phenethyl <br />9610 95 960516 3395 Phenethy1 <br />9611 03 960516 1268 Phenethy1 <br />9612 10 960515 675 none <br />Horsethiefb d 960512 1000 <br />North Pond d 960512 1000 <br />Adobe Creek d 960512 1000 <br />Total 28 2976 <br /> <br />a different letters indicate portions of the same family lot imprinted with different chemicals. <br />b excess fish from selenium experiments; fish were subjected to different types of chemicals. <br />C Phenethyl is short for Phenethy1 alcohol. <br />d Excess fish from selenium experiments; no data. <br /> <br />crippling of larval razorbacks due to nutritionally incomplete diets that are produced commercially <br />(M. Bernard, Valley City NFH, personal communication). Costs for this feed were over $40.00 <br />per pound. Due to the high cost of that diet, a talapia diet made by Integral Fish Foods, in Grand <br />Junction CO was also tried. The conversion rates were lower, but at less than $0.40 per pound the <br />feed was more economical. For conversion rates (weight offeed per 30 days / fish weight gain per <br />30 days) see Table 4. The fish were initially fed Barrows razorback diet, but were switched to the <br />talapia diet when they reached 65 mm in length. <br /> <br />When the razorbacks reached a length of 100 rom, approximately six months after hatching, they <br />were PIT (passive integrated transponder) tagged. In April 1997, 1,111 razor backs were stocked <br />into refugia ponds at Horsethiefas future broodstock. Between October 1996 and June 1997, a <br />total of 9,798 razorbacks were stocked at Clymers grow-out pond. They were harvested from the <br />pond in September, 1997. In September and October of 1997,3,441 razorbacks were stocked in <br /> <br />-14- <br />
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