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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Effect of prerigor pressurization on postmortem biochemical changes in beef muscle

Elkhalifa, 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
2

Physical and chemical carcass characteristics as influenced by protein source, protein level, breed type, frame size, and muscling

Savage, Donald Hoyt January 1981 (has links)
No description available.
3

QUANTITATIVE ESTIMATES OF BEEF CARCASS COMPOSITION AND YIELD OF RETAIL FROM SPECIFIC GRAVITY MEASUREMENTS AND EASILY OBTAINABLE CARCASS VARIABLES

Mata Hernandez, Antonio January 1979 (has links)
No description available.
4

Quantitative estimates of carcass chemical composition of yearling cattle from specific gravity and cooler traits

Tsung, Chun-Chen January 1980 (has links)
No description available.
5

Analysis of Carcass Grade and Weight Sales of Fat Cattle in Arizona and Southern California

Stubblefield, Thomas M., Wright, N. Gene 10 1900 (has links)
No description available.
6

Hormonal response of lipolysis in ruminants of different biological types

Jones, Steven Joseph January 1980 (has links)
No description available.
7

Myoglobin properties of electrically stimulated bovine longissimus muscle

Sleper, Pamela S January 1982 (has links)
Typescript (photocopy).
8

Ralgro implanted bulls : performance, carcass characteristics, longissimus palatability and carcass electrical stimulation

Greathouse, John Ralph January 2011 (has links)
Typescript (photocopy). / Digitized by Kansas Correctional Industries
9

THE INFLUENCE OF FRAME SIZE AND DAYS ON FEED ON CARCASS TRAITS AND COMPOSITION OF STEERS.

Baco, Abdul-Aziz Ishak. January 1982 (has links)
No description available.
10

Physical and chemical carcass characteristics as influenced by concentrate level, breed type and fat thickness endpoint

Ochoa, Mario F. January 1981 (has links)
No description available.

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