SVIBOR - Project code: 4-05-170

MINISTRY OF SCIENCE AND TECHNOLOGY

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tel.: +385 1 459 44 44, fax: +385 1 459 44 69
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Project code: 4-05-170

BIOCHEMICAL PARAMETERS IN BEEF CATTLE FATTENING CAPACITY AND MEAT PRODUCTION EVALUATION

Main researcher: KRIŽANOVIĆ, DUBRAVKA (23696)

Assistants

BOŽIĆ, PERO (174064)

Type of research: applied
Duration from: 07/01/92. to 12/31/98.

Papers on project (total): 10
Papers on project quoted in Current Contents: 1

Institution name: Veterinarski fakultet, Zagreb (53)
Department/Institute: Department of Animal Breeding and Husbandry
Address: Heinzelova 55
City: 10000 - Zagreb, Croatia

Communication: Phone: 385 (0)041-290-224; Fax: 385 (0)034-214-697

Summary: In the course of Simmental beef cattle progeny testing the body weight and average daily gain will be monitored. In the blood the activity of enzymes glucose-6-phosphate dehydrogenase and gamma-glutamyltransferase and concentrations of glutathione, haemoglobin, potassium, sodium and magnesium will be determined. Blood specimens will be taken four times during the fattening. After slaughter the rib part share of muscle, bone, fat and connective tissue will be established. The protein, ether extract (fat), ash and water content will be determined in the m.long.dorsi (MLD). The examined biochemical parameters will be correlated with fattening characteristics and meat quality using standard statistical methods.

Keywords: Cattle, erythrocytes, gluthatione, enzymes, cations.

Research goals: The object of this project was to identify Simmental beef cattle biochemical blood parameter variations and potential variations in production traits since most blood parameters have been reported to be associated with either meat quality or performance traits. The levels of most biochemical blood parameters are influenced by several factors, but under the same environmental conditions within the same breed different animals would give different production results. Phenotypic variances combined with biochemical blood constituents could help us to select animals with better performances. In this respect we have decided to monitor blood levels of glutathione (GSH) and activity of glucose-6-phosphate dehydrogenase (GPDH) and gamma glutamyl- transferase (GGT). All three parameters are directly or indirectly connected with proper erythrocyte (E) function which could be consider as a unique continually moving tissue touching all other tissues supplying them with oxygen. The concentrations of haemoglobin (Hb) and cations K, Na and Mg were also determined. On limited number of animals we have established that GSH concentration significantly decreased and Hb concentration significantly increased as the fattening period went on. The GPDH and GGT activity was significantly higher at the end of the trial compared with the start of the trial.At the animals age of one year the activity of both enzymes was in positive and significant correlation with MLD protein content. The erythrocyte K and Na concentrations were significantly increasing during the fattening. In one year old beef cattle there was a negative and significant correlation between EK concentration and MLD protein content.

COOPERATION - INSTITUTIONS

Name of institution: CENTAR ZA REPRODUKCIJU ŽIVOTINJA
Type of institution: Other
City: 10000 - Zagreb, Croatia

Other information about the project.


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Last update: 09/29/95
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