Preliminary monitoring of agricultural pesticides in a cooperative tobacco pest management project in North Carolina, 1971--first-year study

A preliminary tobacco pest management pesticide monitoring project was initiated in two counties of North Carolina in 1971 to develop an ecologically, economically, and socially acceptable system for protecting tobacco from damaging insect and disease pests. Results from the first year's study including sampling procedures, sample preparation, and analysis and residue data are presented in this paper.     

Effect of dietary flax oil and hypobaric hypoxia on right ventricular hypertrophy and ascites in broiler chickens

1. The effect of dietary flax oil on growth rate, blood haemoglobin content, mortality and incidence of pulmonary hypertension and ascites in broilers at ambient pressure and at reduced atmospheric pressure was examined.

2. Birds were housed either in hypobaric chambers simulating 1000, 1500 or 2200 m altitude or in pens at ambient atmospheric pressure and fed on diets containing 100 g/kg added fat as either an animal/vegetable (A/V) blend or flax oil.

3. Birds raised under hypobaric conditions had a decreased growth rate and increased mortality, blood haemoglobin content, and incidence of pulmonary hypertension and ascites compared to the groups at normal atmospheric pressure.

4. Broilers fed on the diet containing flax oil snowed no difference in growth rate or blood haemoglobin content compared to birds fed on the A/V fat diet raised at the same altitude.

5. Inclusion of flax oil in the diet decreased mortality and the incidence of ascites at 2200 m and pulmonary hypertension at 1500 m.

6. Flax oil may be an effective method of reducing ascites and pulmonary hypertension in broilers without affecting performance.     

Antibody response after a two-year intradermal booster of rabies human diploid cell vaccine

A study was undertaken to evaluate the effectiveness of a low dose of rabies human diploid cell vaccine administered intradermally for preexposure booster inoculation. Seventy-six volunteers received a 0.1-ml dose of rabies human diploid cell vaccine intradermally, approximately 2 years after their primary series. Though only 25 (32.9%) had a titer less than 0.5 IU/ml before the booster, all had a postbooster titer of greater than or equal to 4.0 IU/ml 3 weeks later. Five of 73 (6.8%) reported an allergic reaction after the booster.     

A double-blind comparison of olive oil and a combination of evening primrose oil and fish oil in the management of canine atopy.

A randomised double-blind parallel study lasting eight weeks was used to assess the effects of olive oil in a group of atopic dogs whose clinical signs were well controlled by dietary supplementation with a combination of evening primrose oil and fish oil. Nine of the 11 dogs which continued to receive this combination were considered unchanged at the conclusion of the study, whereas eight of the 10 dogs switched to olive oil had deteriorated. The mean plasma concentration of dihomogammalinolenic acid, a precursor of potentially antiinflammatory mediators, was significantly reduced (P < 0.05) in the olive oil-treated group at the end of the study. There were no significant differences between the mean plasma linoleic, eicosapentaenoic and arachidonic acid concentrations in the two groups. These findings suggest that olive oil is not an effective therapeutic agent in the control of canine atopy.     

Fine tuning the history and physical examination: correlations with miscellaneous techniques

It may be unusual to think of a physical examination as a technique, but what better "instruments" do we have than our eyes, our ears, and our hands? Therefore, I will describe several "techniques" that I felt should be included in this journal, but that do not warrant an article of their own. This article will cover some parts of the routine physical examination, correct positioning of cats and consequences of bad positioning, radiographic techniques that will help diagnose heart failure more consistently, examination of dogs with lower airway disease, and examination of cats with aortic thromboembolism (ATE). Several "pearls" that may get lost in the other information is sprinkled throughout the article.