Subject descriptors: 



Trout; experiment; method evaluation. 



075 



Gooby , Dick . 

 1971 . 



Idaho trout farmer profits on 10-cent margin. 

 Fish Farming Ind. 2 (3): 36-38. 



Large firms grow, process, and market trout, but it has not been 

 feasible for them to develop small springs. One way for these 

 large firms to increase output to the rate necessary for 

 profitable operation has been to provide fingerlings to land 

 holders with smaller springs and to offer compensation for grow- 

 out services at a specified rate, 10 cents per pound of trout in 

 this case. The firm's 1970 output was 70,000 pounds, and two or 

 three crops may be put through the grow-out process in a year # 

 with stocking at 4 to 5 inches and selling at about 12 inches. 

 The 1970 gross was $7,000; feeding labor, $1,080; pond 

 amortization, $700; and total annual costs, $1,780. The net 

 return exceeded that for an 80-animal beef cattle operation, for 

 which similar revenue and cost data are indicated. 

 Subject descriptors: 

 Trout; revenue; costs; returns; enterprise comparison. 



076 



Klontz, George W. 

 1973. 



A survey of fish health management in Idaho. 



Univ. Idaho, For., Wildl. , Range Exp. Stn. , Info. Ser . 3, 34 pp. 

 The text and some of the tables of this report are published in 

 Airer. Fishes U.S. Trout News 18(9): 8, 9, 11-13, 16, 17 and 20. 

 To better understand fish health problems, Federal, State, and 

 commercial fish-raising systems were surveyed in Idaho in 1973, 

 and resulting 1972 production, costs, employment, and other 

 information are reported. The commercial production of trout, 

 salmon, and catfish has several component operations. fiainbow 

 trout output totaled 27.4 million pounds in 1972, compared to 

 0.75 million pounds in 1956; catfish output was 0.1 million 

 pounds in 1972; and output of both is expanding, judging by 

 information for 1973. Mortality rates and costs for eggs and 

 fish (three sizes of fish, 1 to 3, 3 to 6, and 6 to 12 inches 

 long) are detailed, and consequent losses are estimated for 

 private growers only. While mortality rates decline with age 

 (e.g., eggs, 16.5%; 6- to 12-inch fish, 6.4%), mortality among 6- 

 to 12-inch fish accounts for 75% of the loss, because production 

 cost is higher for the older fish. Production costs for purposes 

 of loss estimation include feed, labor, and egg costs, but not 

 capital outlay, return on investment, and other components of 

 gross revenue; losses totaled $0.56 million out of production 

 costs of $7.95 million. 



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