The effect of supplementary grass silage and standard concentrate on milk fat fatty acid composition and iodine value when cows are fed a whole rapeseed-based concentrate at pasture

peer-reviewedThe use of grass silage and concentrates to supplement fresh grass intake is commonly practised in dairy systems. However, the effects of such supplementation within a dietary regime designed to produce a spreadable butter are unknown. Sixteen Holstein Friesian cows were used in an incomplete changeover design to investigate the effect on milk fat of supplementation with grass silage (GS) or standard concentrate (SC) when offering a concentrate based on whole rapeseed at pasture (RC+G). A control diet of fresh grass and standard concentrate (SC+G) was also included. Diet had no effect (P > 0.05) on milk yield or on the lactose concentration of milk. The iodine value (IV; grams of iodine per 100 g milk fat) of milk fat with the RC+G diet was greater (43.9, P < 0.05) than with the SC+G diet (39.9). The iodine value of milk fat was reduced (P < 0.05) when RC+G+GS was offered (41.5 g/100g), but not when RC+G+SC was offered (43.1 g/100g), compared with when RC+G was offered. The proportion of unsaturated fatty acids in milk fat was higher (P < 0.05) when the RC+G diet was offered compared with either RC+G+GS or RC+G+SC. If supplementary feedstuffs are to be used in combination with a wholerapeseed- based concentrate and pasture, then inclusion of standard concentrate would be preferred over grass silage because the negative impact on the iodine value of milk fat was less. However, further research is required to investigate the effect on IV of milk fat when a standard concentrate supplement is offered at levels that increase milk yield

Portfolio assessment of laboratory practicals integrating learning across modules

Physical Metallurgy, a compulsory module on the part time and full time Materials Engineering degree programme at Sheffield Hallam University has for a number of years utilised a series of separate practical based laboratories in order for students to gain a greater understanding of some key concepts associated with linking microstructure to properties and processing. One of the main issues of these stand-alone practicals was that students were following a menu of tasks, leading to a lack of deeper understanding of key concepts and theories and therefore were unable to link information between each of them. A recent revision of this module has drawn the practical elements into a year-long integrated package of practical work, where students undertake an investigation, developing broader and deeper skills. Additionally the learning strategy utilises the output of another module in manufacturing, using the output of a casting practical linking the two modules with an integrating investigation, eventually leading to summative assessment by portfolio. This paper will detail the development of the new programme of work undertaken by the students and evaluate, using student feedback, and how student learning and achievement has been improved compared to previous methodologies

Differences in intestinal size, structure, and function contributing to feed efficiency in broiler chickens reared at geographically distant locations

The contribution of the intestinal tract to differences in residual feed intake (RFI) has been inconclusively studied in chickens so far. It is also not clear if RFI-related differences in intestinal function are similar in chickens raised in different environments. The objective was to investigate differences in nutrient retention, visceral organ size, intestinal morphology, jejunal permeability and expression of genes related to barrier function, and innate immune response in chickens of diverging RFI raised at 2 locations (L1: Austria; L2: UK). The experimental protocol was similar, and the same dietary formulation was fed at the 2 locations. Individual BW and feed intake (FI) of chickens (Cobb 500FF) were recorded from d 7 of life. At 5 wk of life, chickens (L1, n = 157; L2 = 192) were ranked according to their RFI, and low, medium, and high RFI chickens were selected (n = 9/RFI group, sex, and location). RFI values were similar between locations within the same RFI group and increased by 446 and 464 g from low to high RFI in females and males, respectively. Location, but not RFI rank, affected growth, nutrient retention, size of the intestine, and jejunal disaccharidase activity. Chickens from L2 had lower total body weight gain and mucosal enzyme activity but higher nutrient retention and longer intestines than chickens at L1. Parameters determined only at L1 showed increased crypt depth in the duodenum and jejunum and enhanced paracellular permeability in low vs. high RFI females. Jejunal expression of IL1B was lower in low vs. high RFI females at L2, whereas that of TLR4 at L1 and MCT1 at both locations was higher in low vs. high RFI males. Correlation analysis between intestinal parameters and feed efficiency metrics indicated that feed conversion ratio was more correlated to intestinal size and function than was RFI. In conclusion, the rearing environment greatly affected intestinal size and function, thereby contributing to the variation in chicken RFI observed across locations

“It’s Like I’ve Got This Music in My Mind”: Protecting Human Authorship in the Age of Generative Artificial Intelligence

The music industry stands on the brink of a crisis. With unpredictable judicial standards that are inconsistent across the country, plaintiffs seeking to protect their musical works against copyright infringement face a heavy burden of proof, especially when facing defendants who are more wellknown and more well-funded. Not only that, but plaintiffs may not receive their day in court given that powerhouse artists like Taylor Swift, Sam Smith, and Bruno Mars have chosen to settle rather than defend their musical works in court. Now, Generative Artificial Intelligence (“Generative A.I.”) and A.I.-generated music will inevitably send the music industry into a tailspin—and the law is not ready to grapple with the complexities that will arise. To wit, Generative A.I. is poised to threaten the very principles on which copyright law is founded: To encourage (human) creativity by protecting original works of expression. This Note seeks to protect human music copyright holders against the ever-growing threat of A.I.-generated music. Part I addresses A.I. technology and the legal uncertainties associated with A.I.-generated music. Part II discusses the current doctrine of music copyright infringement. Part III offers a series of proposals for how to adapt the current doctrine to ensure music copyright holders can protect their original works of human authorship against A.I.-generated works