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The relationship between body measurements and performance parameters in boarsConley, Paul Booker January 2011 (has links)
Digitized by Kansas Correctional Industries
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Effect of prerigor pressurization on postmortem biochemical changes in beef muscleElkhalifa, Elamin Abdalla 30 June 1983 (has links)
Prerigor pressurization of bovine semimembranosus muscle at 103.5
MNm⁻² (15,000 psi) for two min at 35°C significantly decreased
(P<0.01) muscle pH, and significantly (P<0.01) increased the rate of
glycogen degradation during the first 4 hr postmortem.
Glycogen levels of pressurized muscle were significantly
(P<0.01) lower than those of the control at 1, 2 and 4 hr postmortem.
Glucose concentrations were significantly (P<0.01) higher in the
treated muscle than in the control at all sampling periods. Until 4
hr postmortem the level of glucose-6-phosphosphate was higher in
pressure-treated muscle than in the control. Lactate content
increased rapidly after pressurization (1 hr postmortem), resulting in
an immediate drop in pH; however, there was no significant difference
between control and treated muscles at 24 hr. Pressurized muscle
showed a significant (P<0.01) increase in lactate dehydrogenase
activity over that of the control muscle at 1 hr but not at 24 hr.
Pressurization accelerated catabolism of both creatine phosphate
and adenosine triphosphate which resulted in a higher ATP turnover
value than that of the control. R-values (a measure of metabolic
rate) were significantly correlated (r=-0.95) with degradation of ATP. CPK activity was significantly higher (P<0.01) in pressurized muscle
than in the control at 1 hr postmortem but not at 24 hr.
Concentrations of ATP, adenosine diphosphate (ADP), adenosine
monophosphate (AMP), inosine monophosphate (IMP), bases and
nucleosides (adenosine, adenine, inosine, hypoxanthine) and
nicotinamide adenine dinucleotide (NAD) were determined by high
pressure liquid chromatography. Pressurization completely depleted
the ATP supply and increased the IMP concentration at 1, 4 and 24 hr
postmortem. At 24 hr postmortem, control samples had more ADP whereas
the AMP concentration was higher in the pressurized samples at 1 hr
postmortem but not at 24 hr. Concentrations of bases and nucleoside
metabolites and NAD did not differ between treatments. / Graduation date: 1984
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'Burial at sea' : consumption and dispersal of large fish and cetacean food-falls by deep-sea scavengers in the abyssal Northeast Atlantic Ocean and Eastern Mediterranean SeaJones, Emma G. January 1999 (has links)
The fate of cetacean carcasses in the deep-sea was investigated using autonomous lander vehicles incorporating time-lapse camera and acoustic tracking systems, as well as fish and amphipod traps. Four lander deployments placed cetacean carcasses at depths of 4000-4800m in the Northeast Atlantic for periods of 36h, 152h, 276h and 480h, before being recovered. The photographic sequences revealed that the soft tissue of carcasses was consumed at rates varying from 0.05-0.48kg.h-1, depending on how intact the carcass was. In each deployment, approximately 1h after emplacement, the grenadier Coryphaenoides (Nematonurus) armatus and large numbers of lysianassid amphipods had arrived at the food-fall. Amphipods appeared to be the only scavengers able to feed directly on the carcass. They tunnelled through the skin and connective tissue layer to reach the blubber and muscle, which was consumed in preference to anything else. Despite being unable to feed on the carcass directly, grenadier numbers remained high until the majority of the bait had been consumed. They were believed to be preying on amphipods attracted to the food-fall. Acoustic tracking studies suggested that, although overall fish numbers remained high during this phase, individuals did not stay significantly longer at the site of the large food-fall compared to a small one, and a "conveyer-belt" of fish arrived, fed and dispersed on a scale of 10s to 100s of km. Once the soft tissue had been removed, grenadier numbers declined and mobile scavengers were replaced by a variety of more benthic fish and invertebrates, some of which took up residence amongst the bones, e.g. eelpouts and galtheid crabs. Funnel traps recovered with the carcass and from a series of fish trap deployments of varying duration indicated a succession in species composition of amphipods, with specialist necrophages such as Eurythenes gryllus and Paralicella sp. being replaced by more generalist feeders of the Orchomene species complex.
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Physical and chemical carcass characteristics as influenced by protein source, protein level, breed type, frame size, and musclingSavage, Donald Hoyt January 1981 (has links)
No description available.
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An economic evaluation of yield grade standards for Canadian carcass beefDawson, Oliver Glenn 30 April 1982 (has links)
The basic objective of this thesis was to estimate the
economic effects of yield grade standards for carcass beef
on the various market sectors of the Canadian beef industry.
The adoption of the standards was expected to enhance
consumer demand, improve efficiency within the processing
and marketing services sectors, and improve resource
allocation and revenues of livestock producers.
A conceptual model showing the interrelationships among
market sectors was developed and formulated into a system of
equations for econometric estimation. The model contained
variables relating to the supply and demand of market
participants affected by the change in grading standards.
Measurement of these variables was based on published
quarterly data, including four years of yield grading, over
the 1961-76 period.
The statistical results showed a significant economic
variables relating to the supply and demand of market
participants affected by the change in grading standards.
Measurement of these variables was based on published
quarterly data, including four years of yield grading, over
the 1961-76 period. Binary variables were incorporated in
the model to identify any structural change in the
relationships coincident with the grade change.
Problems in estimation arose due to the simultaneous
nature of the model, and intercorrelation problems involving
predicted prices for adjacent market levels in certain
structural equations. Two alternative specifications of the
processing and marketing services relationships were
formulated to address this problem. First, variables
relating to demand at the adjacent market level were
substituted for the corresponding price. The second method
involved the ratio of adjacent market level prices. Both
specifications resolved the problem,, but in the substitution
case intercorrelation was transferred to other variables.
Estimates of the parameters of the various equations were
obtained by using the two stage least squares regression
procedure.
The statistical results showed a significant economic
impact of yield grades, as measured by the slope and
intercept binary variables, in the estimated retailer demand
and producer supply equations. But, these results cannot be
considered conclusive. A lack of information concerning
impact of yield grades, as measured by slope and intercept
binary variables, in the estimated retailer demand and
producer supply equations. But, these results cannot be
considered conclusive. A lack of information concerning
historical costs in the processing and marketing sectors
necessitated the use of proxy variables which may not have
accurately captured the full impact of the grade change. A
further problem was that potential yield grade adjustments
in carcass weights were dominated by the effects of rapidly
rising feed grain prices throughout the grade change period. / Graduation date: 1982
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QUANTITATIVE ESTIMATES OF BEEF CARCASS COMPOSITION AND YIELD OF RETAIL FROM SPECIFIC GRAVITY MEASUREMENTS AND EASILY OBTAINABLE CARCASS VARIABLESMata Hernandez, Antonio January 1979 (has links)
No description available.
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Quantitative estimates of carcass chemical composition of yearling cattle from specific gravity and cooler traitsTsung, Chun-Chen January 1980 (has links)
No description available.
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Analysis of Carcass Grade and Weight Sales of Fat Cattle in Arizona and Southern CaliforniaStubblefield, Thomas M., Wright, N. Gene 10 1900 (has links)
No description available.
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Effects of time-restricted vs. ad-libitum feeding on performance, carcass traits and behavior of finishing pigsVargas, Jose Vargas January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas State University Libraries
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The quality of pig meat in relation to sex and slaughtering ageLee, Chung-yung, Jetty., 李忠英 January 1995 (has links)
published_or_final_version / Zoology / Master / Master of Philosophy
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