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Biomedical subjects

P J Cunningham

Publications and source records attributed to P J Cunningham.

At least 55 records · Page 3Linked to original sources
PubMed1978

Eye protection.

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Dental Care↗
PubMed1977

Determination of the optimum dietary proportions of lysine and tryptophan for growing rats based on growth, food intake and plasma metabolites.

Weanling rats were divided into 24 groups and fed one of three levels of lysine and one of eight levels of tryptophan in a 3 X 8 factorial design to determine the optimum dietary proportions of lysine and tryptophan. The tryptophan "requirement" and the optimum lysine:tryptophan ratio were estimated for both adequate and subadequate lysine levels on the basis of weight gain, feed efficiency and changes in plasma levels of lysine, tryptophan and urea. The various criteria yielded similar estimates and indicated a tryptophan requirement of approximately 0.15% when lysine was adequate. The optimum lysine:tryptophan ratio was between 4 and 5 for the rapidly growing 3- to 6-week old rat.

Age Factors↗
PubMed1977

Determination of the optimum dietary proportions of lysine and tryptophan for growing pigs based on growth, food intake and plasma metabolites.

Weanling crossbred pigs were divided into 24 groups and fed one of three levels of lysine and one of eight levels of tryptophan in a 3 X 8 factorial design to determine the optimum dietary proportions of these two amino acids. Weight gain and feed efficiency, and changes in plasma levels of lysine, tryptophan and urea were the response criteria. The tryptophan "requirement" and the optimum lysine:tryptophan ratio were estimated for each of the three lysine levels. The data indicate a tryptophan requirement of 0.19% to 0.23% for the 3-week-old pig when the lysine level is adequate. For pigs of this age a lysine:tryptophan ratio of from 4 to 5 was about optimum.

Age Factors↗
PubMed1976

Survival of anaerobic and aerobic bacteria in a nonsupportive gassed transport system.

Survival of anaerobic and aerobic bacteria in a commercially available, non-supportive, gassed (oxygen-free) transport container (Anaport) was evaluated quantitatively. Saline-suspended obligate anaerobes survived significantly better in the gassed container in aerobic control tubes (P less than 0.025, t test), and counts were virtually unchanged after 8 h of holding. Similarly, initial counts and relative proportions of a mixture of Bacteroides fragilis and Staphylococcus aureus were maintained for 72 h. The value of the gassed transport system was less apparent when microorganisms were suspended in nutrient broth. The major advantage of the gassed transport system appears to be for holding of specimens collected by saline irrigation.

Bacteria↗