26,182 research outputs found
An Arakawa and Gins experimental teaching space : a feasibility study
This essay discusses the benefits of Arakawa and Gins procedural architecture for the development of interdisciplinary and transdisciplinary learning environments. the discussion of how the body is engaged in knoelwdge acquisition leads to a feasibility study undertaken at an Australian University to determine how an experimental, sensory and perceptually-based learning space might be built given the T&L priorties and the fiscal climate in which universitioes curently operat
Socialism in Theory and Practice: An Interdisciplinary Study Involving History and Political Science
Graduate - Doctorate
Theoretica
China media research: The trans-disciplinary challenge
This paper addresses the permeability of the field of China media research, its openness to new ideas; it argues that we need to adopt a wide angle view on research opportunities. Expansion of China’s media during the past decade has opened up possibilities for broadening of the field. The discussion first identifies boundary tensions as the field responds to transdisciplinary knowledge; in the second part the paper addresses challenges faced by Chinese researchers or visiting scholars in ‘Western’ media environments. Finally the paper addresses what a wide angle perspective might include
The Socialist Dilemma: A Brief Study of the History of Socialism and the Dilemma It Presented the Allied Powers During World War II
LUO Remote Online Presenter
Graduate
Textual or Investigativ
Conquest of the People? A New Look at Napoleon\u27s Reign in Light of the Intellectual and Religious Thought of His Day
Graduate
Textual or Investigativ
Lissitzky : new materialism and diagrammatic living
Lissitsky\u27s spatial and architectural work anticipates the contemporary fascination with expanded fields of activity that have resulted in transdisciplinary approaches to research and the role of practice-led research. This paper will discuss Lissitzky\u27s suprematist perspective in relation to contemporary practices - under the rubric of the "diagram" - that re-imagine and enact the relationship between the built surround and embodied cognition. Lissitzky\u27s work will serve as the starting point for a discussion of contemporary practitioners and theorists working across philosophy, cognitive science and built environment in order to draw out, through the act of diagramming, life on new terms.<br /
A comparison of finishing strategies to fixed slaughter weights for Holstein Friesian and Belgian Blue × Holstein Friesian steers
peer-reviewedCattle finishing strategies may involve feeding a high energy diet throughout or following
a period of moderate growth. The objective of this study was to compare Holstein
Friesian (HF) and Belgian Blue × Holstein Friesian (BB) steers (24 per breed type,
initial live weight 434 and 431 kg for HF and BB, respectively) finished to 560 kg or 620
kg target slaughter weight, on either a concentrate diet ad libitum from the start of the
finishing period (C), or on a concentrate diet ad libitum following an 84-day period on
grass silage (SC). Slaughter weights were similar for HF and BB, but kill-out proportion,
carcass weight and carcass conformation class were superior (P < 0.001), and
carcass fat score was inferior (P < 0.001), for BB. Total concentrate, dry matter and net
energy intakes were higher (P < 0.001) for HF, and efficiency of utilization of net energy
for carcass-weight gain was lower (P < 0.01). Mean daily live-weight gain was higher
for C than SC (P < 0.001) and for slaughter at 560 kg than at 620 kg (P < 0.05). Killout
proportion was higher for C than SC (P < 0.05) and for 620 kg compared to 560 kg
slaughter weight (P < 0.001). Measures of fatness were unaffected by feeding treatment
but all were higher (P < 0.01) for the 620 kg slaughter weight. Net energy required
per unit carcass-weight gain was higher for C than SC (P < 0.001) and for 620 kg
than for 560 kg slaughter weight (P < 0.001). When slaughtered at 620 kg live weight
there was no difference between the feeding treatments in net energy required per unit
carcass-weight gain. While both breed types had similar live-weight gain BB had 9%
greater (P < 0.01) carcass-weight gain and were 14% more efficient (P < 0.01) in converting
feed energy to carcass weight. Neither breed type had commercially acceptable
carcasses at 560 kg slaughter weight when finished on SC
Ranking of Sire Breeds and Beef Cross Breeding of Dairy and Beef Cows
End of Project ReportSummary
There is general agreement across countries on the ranking of beef breeds for production and carcass traits. Differences between dairy and early maturing beef breeds in growth and slaughter traits are small, but the latter have lower feed intake and better carcass conformation.
Late maturing beef breeds also have lower feed intake and better carcass conformation and in addition, have a higher growth rate, kill-out proportion and carcass muscle proportion. When factors such as age and fatness are accounted for, differences between breeds in meat quality traits are small.
Differences amongst breed types in kill-out proportion can be explained by differences in gut contents (consequent on differences in feed intake), differences in the proportions of gastrointestinal tract and metabolic organs, differences in hide proportion, and differences in offal fats. Growth is an allometric, rather than an isometric, process. Some parts, organs and
tissues grow relatively more slowly than the animal overall, and so become decreasing
proportions over time, while others grow relatively faster and become increasing proportions.
With increasing slaughter weight, the proportions of non carcass parts, hind quarter, bone, total muscle and higher value muscle decrease, while the proportions of non carcass and carcass fats, fore quarter and marbling fat all increase.
Because of heterosis or hybrid vigour, the productivity of cross-bred cattle is superior to the mean of the parent breeds. While calving difficulty may be slightly higher (probably due to greater birth weight), calf mortality is much reduced in cross-breds. In addition, general
robustness and growth rate are increased. There are additive effects of heterosis in the dam and the progeny. When cross-bred cows are mated to a bull of a third breed, >60 % of total heterosis is attributable to the cross-bred cows.
The double muscling phenotype in beef cattle is due to the inactivated myostatin gene, but the inactivating mutation is not the same in all breeds and other genes also contribute to muscling.
Compared to normal animals, double muscled animals have lower proportions of digestive
tract, internal fats and metabolic organs. This explains their superior kill-out proportion.
They also have a smaller hind shin that helps accentuate the muscling in the remainder of the 4 limb. There are similar degrees of muscular hypertrophy in both the hind and fore quarters.
Muscle to bone ratio is about one third greater in double muscled than in normal carcasses.
Piedmontese cattle with none, one or two mutated myostatin alleles were compared with
normal Herefords and Limousins. In the absence of any mutated allele, Piedmontese were similar to Herefords, with one mutated allele they were similar to Limousins and with two mutated alleles they were immensely superior to Limousins. In fact, the response to the second mutated allele was about three times that to the first. If progeny approximated to the mean of the parent breeds, crossing a double muscled sire with a dairy or early maturing beef cow would result in cattle of similar characteristics to pure-bred late maturing beef breeds.
This does not happen because double muscling is dependent on a homozygous myostatin
genotype. The progeny of a common cow breed and normal late maturing, or double muscled,
sire breeds have similar production traits
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