Influence of supplemental cracked high-linoleate or high-oleate safflower seeds on site and extent of digestion in beef cattle

Department of Animal Science, University of Wyoming, Laramie 82071-3684, USA.
Journal of Animal Science (Impact Factor: 2.11). 12/2004; 82(12):3577-88.
Source: PubMed


Our objectives were to evaluate ruminal fermentation patterns, apparent ruminal biohydrogenation, and site and extent of nutrient disappearance in cattle fed supplemental cracked safflower seeds differing in 18 C fatty acid profile. Nine Angus x Gelbvieh heifers (641 +/- 9.6 kg) fitted with ruminal and duodenal cannulas were used in a triplicated 3 x 3 Latin square. Cattle were fed (OM basis) 9.1 kg of bromegrass hay and either 1) 1.8 kg of corn and 0.20 kg of soybean meal (Control); 2) 0.13 kg of soybean meal and 1.5 kg of cracked high-linoleate (67.2% 18:2) safflower seeds (Linoleate); or 3) 1.5 kg of cracked high-oleate (72.7% 18:1) safflower seeds (Oleate). Safflower seed supplements were formulated to provide similar quantities of N and TDN and 5% dietary fat. Single degree of freedom orthogonal contrasts (Control vs. Linoleate and Oleate; Linoleate vs. Oleate) were used to evaluate treatment effects. True ruminal OM and ruminal NDF disappearances (percentage of intake) were greater (P < or =0.02) for Control than Linoleate and Oleate. True ruminal N degradability (% of intake) was not different (P = 0.38) among treatments. Apparent ruminal biohydrogenation of dietary 18:2 was greatest (Linoleate vs. Oleate, P < 0.001) for Linoleate, whereas biohydrogenation of dietary 18:1 was greatest (Linoleate vs. Oleate, P = 0.02) for Oleate. Duodenal flow of 18:0 was least (P < 0.001) for Control but did not differ (P = 0.92) between Oleate and Linoleate. Total flow of unsaturated fatty acid to the duodenum was greatest (P < 0.001) in cattle fed safflower seeds, and was greater with Linoleate (P < 0.001) than with Oleate. Duodenal flow of 18:1 and 18:2 increased (P < 0.001) in Oleate and Linoleate, respectively. Duodenal flow of 18:1trans-11 was greater (P < 0.001) in cattle fed safflower seeds and in Linoleate than in Oleate. Postruminal disappearance of saturated fatty acids was greatest (P < 0.001) for Control; however, postruminal disappearance of total unsaturated fatty acids was greater (P = 0.002) for Linoleate vs. Oleate. Supplemental high-linoleate or high-oleate safflower seeds to cattle fed forage-based diets may negatively affect ruminal OM and fiber disappearance but not N disappearance. Provision of supplemental fat in the form of safflower seeds that are high in linoleic acid increased intestinal supply and postruminal disappearance of unsaturated fatty acids, indicating that the fatty acids apparently available for metabolism are affected by dietary fat source.

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    • "been initiated by the high levels of fat in the fiber diets used in this experiment . Fat in the bran product may have acted similar to fat supplementa- tion.Whitney et al. (2000)found that when adding 2.9% soybean oil as a fat supplement to the diet of beef calves the acetate:propionate ratio declined and molar proportions of propionate increased.Scholljegerdes et al. (2004)added safflower seeds to beef calf diets as a fat supplement, and they also reported a decrease in the acetate:propionate ratio. A shift in the production of VFA could also occur because of the biohydrogenation of fat. When unsaturated fats are bio-hydrogenated and form saturated fats, VFA patterns shift toward an increase in propionic a"
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    Preview · Article · Oct 2013 · The Professional Animal Scientist
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    • "the human diet and an optimal ratio of saturated (SFA), monounsaturated (MUFA) and polyunsaturated (PUFA) fatty acids [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]. Many byproduct from the vegetable oil industry, such as safflower byproducts, are rich in unsaturated fatty acids [16] [17] [18] [19] [20] [21] [22] [23]. The lack of the development of the crop for safflower oil production in the Mediterranean environments is mainly due to the length of cropping cycle along with low seed yield potential and some protectionist agricultural policy in favor of different oil crops. "
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    Full-text · Article · Jun 2011
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    • "Lake et al. (2007) observed plasma and adipose tissue of suckling calves were reflective of alternations in long-chain fatty acids of milk from beef cows fed safflower seeds. Scholljegerdes et al. (2004) observed greater duodenal flow of PUFA, more specifically LA, in cattle fed cracked high-linoleate safflower seeds (> 70% LA); however individual ALA fatty concentrations were not changed. Kucuk et al. (2004) also reported a linear increase in duodenal flow of LA and ALA fatty acids concentrations with increasing soybean inclusion in lamb finishing diets. "
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    Full-text · Article · Aug 2009 · Journal of Animal Science
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