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Book The Effect of Premortem Stress Holding Temperatures and Freezing on the Biochemistry and Quality of Skipjack Tuna

Download or read book The Effect of Premortem Stress Holding Temperatures and Freezing on the Biochemistry and Quality of Skipjack Tuna written by Ladell Crawford and published by . This book was released on 1972 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: This experiment was designed to determine if there were differences (biochemical and/or organoleptic) before and after canning rested and stressed skipjack tuna. The live fish were captured off Oahu and were placed in shoreside tanks in Honolulu, Hawaii. After having been under observation for 24 hr, the fish were sacrificed in a rested or stressed condition. Stress was induced by forcing fish to swim around a tank until they showed signs of exhaustion. The rested fish were kept in a separate tank and were agitated as little as possible before being sacrificed. Some of the sacrificed tuna were canned immediately to serve as controls. Others were held in 32°, 60°, and 78° F seawater (SW) for 6 hr, and some were held in 78° F SW for 9 hr before canning. An equal number of fish from all treatments were brine frozen (for 20 hr), then thawed and canned. Sample wedges were taken before canning for measurements of glycolytic and purine degradation products. These measurements together with organoleptic evaluation were also determined on the canned product. There were no commercially discernible differences between rested and stressed skipjack subjected to various time-temperature treatments. The relation of the measured biochemical parameters to the treatment of the fish and the subsequent relation to the quality of the canned product were studied. There were not sufficiently defined relations on which to base quality predictions.

Book The Effect of Premortem Stress Holding Temperatures and Freezing on the Biochemistry and Quality of Skipjack Tuna Classic Reprint

Download or read book The Effect of Premortem Stress Holding Temperatures and Freezing on the Biochemistry and Quality of Skipjack Tuna Classic Reprint written by Ladell Crawford and published by Forgotten Books. This book was released on 2016-11-09 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excerpt from The Effect of Premortem Stress, Holding Temperatures, and Freezing on the Biochemistry and Quality of Skipjack Tuna Since quality means many things to many people, it was important to define this term at the outset. The laboratory's tuna research pro gram concentrated its attention on the quality of tuna as it appears in the can. It is canned tuna which is offered for sale and which com petes on the shelf and in the kitchen for the consumer's dollar. So it is the quality of canned tuna, rather than that of the raw fish, which must form the basis for study. The apparent quality of the raw tuna as judged by appearance and odor is important, but it does not guarantee a good canned product. It is possible to have raw tuna of apparently high quality which shows only average quality when canned. It is also possible to find raw tuna which appears to be of poor quality to sensory judgment that makes an excellent canned pro duct (crawford and Finch. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.

Book Special Scientific Report

Download or read book Special Scientific Report written by and published by . This book was released on 1971 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book NOAA Technical Report NMFS SSRF

Download or read book NOAA Technical Report NMFS SSRF written by and published by . This book was released on 1974 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Abundance of Benthic Macroinvertebrates in Natural and Altered Estuarine Areas

Download or read book Abundance of Benthic Macroinvertebrates in Natural and Altered Estuarine Areas written by Gill Hobart Gilmore and published by . This book was released on 1974 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book An Annotated List of Larval and Juvenile Fishes Captured with Surface towed Meter Net in the South Atlantic Bight During Four RV DOLPHIN Cruises Between May 1967 and February 1968

Download or read book An Annotated List of Larval and Juvenile Fishes Captured with Surface towed Meter Net in the South Atlantic Bight During Four RV DOLPHIN Cruises Between May 1967 and February 1968 written by Michael P. Fahay and published by . This book was released on 1975 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Pelagic Amphipod Crustaceans from the Southeastern Bering Sea June 1971

Download or read book Pelagic Amphipod Crustaceans from the Southeastern Bering Sea June 1971 written by Gerald A. Sanger and published by . This book was released on 1974 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Expendable Bathythermograph Observations from the NMFS MARAD Ship of Opportunity Program for 1972

Download or read book Expendable Bathythermograph Observations from the NMFS MARAD Ship of Opportunity Program for 1972 written by Steven K. Cook and published by . This book was released on 1975 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results of the second year of operation of the NMFS/MARAD Ship of Opportunity Program are presented in the form of vertical distributions of temperature and horizontal distributions of sea surface salinity and temperature. Operational and data management procedures also are discussed.

Book Pink Salmon Oncorhynchus Gorbuscha Tagging Experiments in Southeastern Alaska 1938 42 and 1945

Download or read book Pink Salmon Oncorhynchus Gorbuscha Tagging Experiments in Southeastern Alaska 1938 42 and 1945 written by Roy E. Nakatani and published by . This book was released on 1975 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 20, 532 pink salmon (Oncorhynchus gorbuscha) were tagged and released in southeastern Alaska north of Sumner Strait during the years of 1938 to 1942 inclusive, and in 1945. The recovery of 7, 027 of these tags in the fish traps confirmed the findings of other investigators that the pink salmon stocks of the northern part of southeast Alaska are separate from those in the southern part. They also show that pink salmon enter the northern part of southeast Alaska through two paths: (1) through Icy Strait, and (2) through the lower end of Chatham Strait. No evidence was found of movement through Peril Strait from Salisbury Sound into Chatham Strait. The centers of density of each group of tags appeared to move in a consistent manner, but a smaller number of tags from each release were dispersed throughout the northern part of southeastern Alaska. Differences were noted between the movements of fish in odd and even years. Also a larger proportion of earlier tagged fish moved to recovery locations father [sic] inland. In all areas and in all years the fishing season closed about the time of the greatest abundance of fish in the fishery, therefore the later parts of the runs were not studied. Apparently the 1941 run was the largest and that in 1945 the smallest. Migration rates were studied by plotting the catch per trap as well as by the recovery of tags. The latter showed movements of 9.05 to 33.37 miles per day. Survival rates computed for thirty releases with total tag recovery periods of two or more weeks averaged 0.384. Weekly exploitation rates varied from 0.142 to 0.452 averaging 0.250. The weekly F exponential rate of fishing averaged 0.514. Recoveries of tags from seines were not used since their proportion of tags recovered was less than one-half their proportion of the catch. Recommendations are made for future tagging experiments based upon the results of this analysis.

Book Kinds and Abundance of Zooplankton Collected by the USCG Icebreaker GLACIER in the Eastern Chukchi Sea September October 1970

Download or read book Kinds and Abundance of Zooplankton Collected by the USCG Icebreaker GLACIER in the Eastern Chukchi Sea September October 1970 written by Bruce L. Wing and published by . This book was released on 1974 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Book Seasonal Distributions of Larval Flatfishes Pleuronectiformes on the Continental Shelf Between Cape Cod Massachusetts and Cape Lookout North Carolina 1965 66

Download or read book Seasonal Distributions of Larval Flatfishes Pleuronectiformes on the Continental Shelf Between Cape Cod Massachusetts and Cape Lookout North Carolina 1965 66 written by W. G. Smith and published by . This book was released on 1975 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt: Larval flatfishes, representing 4 families, 17 genera, and 15 species, were identified from collections taken during a 1-yr survey designed to locate spawning grounds and trace dispersion of fish eggs and larvae on the continental shelf. Most flatfishes began spawning in the spring, a time of marked seasonal temperature change. The seasonal distribution of larvae indicated that: 1) bothids had longer spawning seasons than pleuronectids; 2) pleuronectids spawned largely in the northern half of the survey area during the spring; 3) most bothids spawned in the southern half, beginning in spring and continuing through early fall; 4) although cynoglossids spawned incidentally off North Carolina, most of their larvae were transported into the survey area from spawning grounds south of Cape Lookout; 5) the few representatives of the family Soleidae originated south of Cape Lookout; 6) spawning that began in the spring proceeded from south to north as the season progressed, but spawning that began in the fall proceeded from north to south, suggesting that the onset of spawning is triggered by spring warming and fall cooling; 7) most species spawned within a relatively narrow range of temperature; 8) salinity had no apparent influence on spawning.