The Concentrations of Fatty Acids, Cholesterol and Vitamin E in Cooked Longissimus, Semitendinosus, Psoas Major and Supraspinatus Muscles from Cattle Offered Grass Only, Concentrates Ad Libitum or Grass Silage Supplemented with Concentrates.

There is growing interest among consumers in the nutritional value of the food they consume. The objectives of this study were (1) to document the nutritional value, with a focus on the fatty acid profile, of beef from cattle from one commercial production system that only ever received grass-based feed ingredients compared with similar animals finished in more conventional, i.e.

Suckler Bulls Slaughtered at 15 Months of Age: Effect of Different Production Systems on the Fatty Acid Profile and Selected Quality Characteristics of .

The objective was to compare the quality of beef from bulls reared in typical Irish indoor systems or in novel grass-based systems. Bulls were assigned to one of the following systems: (a) grass silage plus barley-based concentrate ad libitum (CON); (b) grass silage ad libitum plus 5 kg of concentrate (SC); (c) grazed grass without supplementation (G0); (d) grazed grass plus 0.5 kg of the dietary dry matter intake as concentrate (GC) for (100 days) until slaughter (14.

Development and validation of an UHPLC-MS/MS method for the determination of mycotoxins in grass silages.

An ultra-high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS) multi-mycotoxin analytical method was developed to simultaneously identify and quantify 20 mycotoxins in grass silages, inclusive of mycotoxins that are currently regulated in European Union feeds. Extraction of mycotoxins from dried grass silages was performed using of a modified QuEChERS extraction employing an acidified aqueous extraction (0.1 N HCl) with no further clean-up.