Comparative studies on fatty acid composition of wild and domestic meats
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Introduction: More than 50 years of research on polyunsaturated fatty acid metabolism
2018, Polyunsaturated Fatty Acid MetabolismMeat Nutritive Value and Human Health
2017, New Aspects of Meat Quality: From Genes to EthicsMarine and terrestrial foods as a source of brain-selective nutrients for early modern humans in the southwestern Cape, South Africa
2016, Journal of Human EvolutionCitation Excerpt :Plants, including the edible corms of iridaceous species, and fruits such as berries and sour figs, contain relatively little (<4 g/100 g) protein, which is of lower biologic value for growing human tissue than that derived from animals (Young and Pellet, 1987). The fat content of muscle tissue from wild animals is considerably lower than that of their domesticated counterparts, where high fat content has been actively selected for (Crawford et al., 1970; Eaton et al., 1997). Muscle tissue from our sample of marine and terrestrial vertebrates contained <4 g/100 g of fat.
Nutritional values of tortoises relative to ungulates from the Middle Stone Age levels at Blombos Cave, South Africa: Implications for foraging and social behaviour
2014, Journal of Human EvolutionCitation Excerpt :A much earlier study found that in a sample of five gopher tortoises (Gopherus polyphemus) fat content was on average 13.4% of overall dried matter weight (Pearse et al., 1925), while more recent analysis of body composition of captive spur-thighed tortoises (Testudo graeca) found that lipid concentrations change throughout the lifespan (Lapid et al., 2005), reaching an equilibrium of around 7% when tortoises achieve a total body weight of approximately 170 g. Although none of the tortoise studies have specifically been on Chersina, an estimate of 7% is used here because the study by Lapid et al. (2005) had the most consistent experimental conditions. Within the body itself, tortoises therefore appeared to be lean sources of meat with fat proportions similar to or only slightly higher than those of wild game (Crawford et al., 1970; Skinner and Louw, 1996; Crawford et al., 2010). Modern adult male Chersina are larger than females (Branch, 1984), with mean body weights (with shells) of 907 g for males and 815 g for females (van Heezik et al., 1994).
Carcass traits and fatty acid profile of meat from lambs fed different cottonseed by-products
2014, Small Ruminant ResearchCitation Excerpt :CLA, principally the C18:2 cis9 trans11 isomer, may be anticarcinogenic and anti-atherosclerotic, decreasing fat accumulation, can modulate the immune response and thus enhance cell-mediated responses, lowering the inflammatory response (Pariza et al., 2001). Industrial production of animal feeds rich in grains containing n-6 fatty acids, has led to production of meat and milk rich in n-6 fatty acids and poor in n-3 fatty acids (Crawford et al., 1970). Changes in fatty acid profile of food from animal sources are becoming an important research issue (Raes et al., 2004; Wood et al., 2004; Daley et al., 2010).
Tortoise taphonomy and tortoise butchery patterns at Blombos Cave, South Africa
2014, Journal of Archaeological ScienceCitation Excerpt :Studies of different species of tortoise show that fat content ranges between about 2% and up to 13% (Kienzle et al., 2006; Lapid et al., 2005; Pearse et al., 1925), but most chelonians do not have masses of dissectible fat (Pond, 1978). These data suggest that tortoises have similar percentages of fat relative to lean meat as wild ungulates (Crawford et al., 1970, 2010; Skinner and Louw, 1996; van Zyl and Ferreira, 2004). An average-sized adult Chersina weighs about 860 g (van Heezik et al., 1994).