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Muskoxen were harvested from three locations on Banks Island in 1981, 1982, and 1983 in the following numbers: 1981, 224; 1982, 87; 1983, 82. Only the 1981 harvest was nonselective for specific age-classes. There was a maximum of 0.83 calves per female ≥ 3 years old in mid-May, as determined by calf and fetus counts; these calves represented 24% of the total sample. Over 90% of all calving was completed by 8 May. Calving may start as early as 8 April and likely no later than 19 April. Body weight increased until at least 5 years of age for both males and females; males were significantly heavier than females at 2 years of age and older. Length and girth increased for both sexes until 5 years of age with significant differences between the sexes occurring at approximately 4 years for girth and 5 years for length.

An experimental and statistical model was developed to study the effect of antibiotics in feed on the fecal shedding of Salmonella. the model design consisted of 3 groups of 4 to 10 experimentally infected ducks each; group 1 was given no medication, group 2 was given a small dose of antibiotic, and group 3 was given a large dose of antibiotic as feed supplement for growth promotion. The test for the null hypothesis and Fisher's exact test were used for evaluating the significance of the results on each sampling day and for the experimental totals. Experimental results of the model showed that, whereas oxytetracycline (OTC) significantly (P less than 0.05) decreased the duration of shedding of OTC-sensitive Salmonella, it significantly increased the duration of shedding of OTC-resistant Salmonella. Evaluation of zinc bacitracin by this model indicated that zinc bacitracin either produced a moderate increase in the duration of fecal shedding or failed to alter the duration of fecal shedding of Salmonella. Seemingly, it is necessary to select a sensitive and a resistant Salmonella strain to evaluate the effects of antibiotics in feed.