Before making a comparison of grass-fed vs. grainfed beef it is necessary to first define these two beef types. An animal is considered grass-fed, according to the USDA Grass Fed Marketing Claim Standards, when grass and forage are the “feed source consumed for the lifetime of the ruminant animal, with the exception of milk consumed prior to weaning. Animals cannot be fed grain or grain by-prod...

Mycotoxins are toxic secondary fungal metabolites. A large variety of mycotoxins have been described, but only a minority of them occur regularly in feed and food items under normal conditions and pose a risk to feed and food safety. The important moulds producing toxins during storage belong to the genera of Penicillium, or Aspergillus. The most important storage toxins are probably ochratoxin...

Many of the software systems we use for everyday purposes incorporate elements developed and maintained by third parties. These elements include not only code components and data bases but also dynamic data feeds from online data sources. Even though everyday software is not mission critical it must be dependable enough for its intended use. This is limited by the dependability of its constitut...

Background Due to the imminent growth of the world population, shortage of protein sources for human consumption will arise in the near future. Alternative and sustainable protein sources (e.g. insects and algae) are now being explored for the production of food and feed. In this project the safety of mealworm (Tenebrio molitor L.) proteins for human consumption was tested according to the Euro...

Globally, food-producing animals consume 70 to 90% of genetically engineered (GE) crop biomass. This review briefly summarizes the scientific literature on performance and health of animals consuming feed containing GE ingredients and composition of products derived from them. It also discusses the field experience of feeding GE feed sources to commercial livestock populations and summarizes th...

(allowed to eat according to appetite). Generally, this allows for maximum performance because energy consumed above the maintenance requirement is available for gain. However, recent work suggests that limit-fed animals may have better feed efficiency. This has economic importance in that changes in feed efficiency have three times the impact on cost of gain as an equal change in rate of gain....

this study was conducted to evaluate the relative bioavailability value of mn proteinate and mn oxide in broiler chicks. a total of 432 day-old cobb 500 commercial male broiler chicks were randomly distributed into nine treatments with eight replicate pens of six chicks each. in a completely randomized design experiment with a 2×4 factorial arrangement of two manganese sources (proteinate and r...

Much of the software we use for everyday purposes incorporates elements developed and maintained by someone other than the developer. These elements include not only code and databases but also dynamic data feeds from online data sources. Although everyday software is not mission critical, it must be dependable enough for practical use. This is limited by the dependability of the incorporated e...

Accurate assessment of nutrient bioavailability is critical for achieving an optimal balance between sufficient and excess for major feed components such as protein sources. Optimizing feed protein sources for farm animal amino acid (AA) requirements is difficult to achieve given the variations in protein quality. Feeding excess protein to meet AA requirements contributes to excess nitrogen (N)...

Three studies were conducted to evaluate the effects of dried distillers grains with solubles (DDGS) on feed intake in growing pigs. In all experiments, pigs were housed in 10.5 × 10.3 ft pens with four 1-hole feeders in each pen to allow pigs to choose from four dietary treatments. In Experiment 1, we evaluated the influence of DDGS drying method on palatability of DDGS. Diets were a control c...