Forty-eight Angus x Hereford yearling steers were used to assess the effect of time on feed (TOF) on the nutrient composition of beef longissimus muscle (LM). Steers were fed a high-concentrate diet with the exception of the d-0 group, which served as a grass-fed control, and then were serially slaughtered at 28-d intervals during the 196-d feeding period. Steaks were removed from the 10th rib and trimmed of exterior fat and epimysial connective tissue before nutrient analysis. Intramuscular fat content doubled (P < .05) between d 84 and 112 but did not differ (P > .05) from d 0 to 84 or from d 112 to 196. This increase in fat content resulted in decreased (P < .05) concentrations of moisture, protein, and ash in the LM. Concentrations of Mg, K, and Fe in the LM increased (P < .10) with advanced TOF. The increase in the total lipid (TL) content of the LM stemmed from a proportional increase (P < .05) in neutral lipid (NL). Polar lipid (PL) remained constant (P = .33) throughout TOF. The NL and TL became more unsaturated as TOF increased, primarily due to a linear (P < .01) increase in oleic (C18:1) acid concentration. In contrast, the polyunsaturated fatty acid (PUFA) concentration in the PL exhibited a linear (P < .01) decrease across TOF. As a result, advanced TOF increased the monounsaturated fatty acid (MUFA) content by 22% and decreased the PUFA content by 72% in the LM. The ratio of hypercholesterolemic (C14 + C16):hypocholesterolemic (MUFA+PUFA) fatty acids was unaffected by increasing TOF from d 28 to 196; however, this ratio was lower (P < .05) for grass-fed controls (d 0) than for d 28 to 84 and d 196. Cholesterol content (milligrams/100 grams) changed cubically (P = .06) across TOF. Ultimately, by limiting TOF to 112 d, the beef industry could provide consumers a palatable beef product that easily fits into a healthy diet and at the same time diminishes the costs associated with external fat trim.

The prevalence of MS was 32%, which was significantly higher than in a healthy pediatric population. We recommend prolonged follow-up for transplant recipients, coupled with enforcement of preventive measures, such as early diagnosis and encouragement of a healthy lifestyle.

A fertilizer production process has been developed on a pilot plant scale, which is not dependent on sulfuric acid. Phosphate rock was acidulated with nitric acid, potassium or another soluble sulfate was added, and the resultant slurry was ammoniated, dried, and granulated. With potassium sulfate, the grade of a typical product was 12-12-12; with ammonium sulfate, the grade was 17-13-0. The calcium content of the rock, which formed calcium nitrate during acidulation, was converted to calcium sulfate and dicalcium phosphate. The soluble sulfate added was sufficient to avoid presence of calcium nitrate in the final product, undesirable because of hygroscopicity. Promising results were obtained in small scale tests in which langbeinite or glaserite provided the sulfate and potassium chloride was added to increase the K20/P205 weight ratio to 1. The grades of these products were 10-10-10 and 11-11-11. The products contained 96% or more of their phosphorus pentoxide in citrate-soluble form, and 5 to 1 1 % was water-soluble.

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