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Three cannulated, lactating cows were used in a 3 x 3 Latin square design to determine the effect of roasting or NaOH treatment of barley on ruminal fermentation and site and extent of digestion of nutrients. Experimental treatments were rolled barley, roasted (exit temperature, 135 degrees C) and r...
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130-day-old [male][male] of the Quebec line were subjected to 6 lighting treatments from 5 wk of age. The percentage of [male][male] producing semen was significantly affected by light regime. Under 12-h light; 12-h darkness (12L:12D) with constant intensity (10.8 lux) or increasing intensity (5.4-5...
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A three-step in vitro procedure was developed by Calsamiglia and Stern [J. Anim. Sci. 73 (1995) 1459] to estimate intestinal protein digestion after 16 h incubation in the rumen. The objective of our work was to modify this procedure to give an accurate estimation of N digestibility without the use ...
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Fresh excreta from caged laying hens were treated with 3% tannic acid or 2% paraformaldehyde. Two diets were made up with 64% wet weight of the excreta, 28% lucerne hay and a little maize, molasses and supplements. The diets had gross energy (GE) 3.9 to 4.0 kcal/g. A control diet had moistened soya ...
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The effect of body fatness on glucose metabolism was studied in 6 adult crossbred wethers, weight 90 kg (fat) or 55 kg (thin). Glucose turnover measurements were made using [6-superscript 3H]glucose by single injection at metabolizable energy (ME) intakes:high, 17 MJ/day; intermediate, 10 MJ/day; lo...
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120 pigs, 11.6 kg, were fed on barley-based diets in which 0, 25, 50, 75 or 100% of supplementary soyabean meal protein was replaced by dehydrated lupin seed (Lupinus albus cultivar Ultra). Starter pigs (10-20 kg) given the 25% lupin diet (25% L) had similar growth rates and consumed more feed (P<...
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Haddock (Melanogrammus aeglefinus) is a gadoid fish species that deposits dietary lipid mainly in the liver. The fatty acid (FA) beta-oxidation activity of various tissues was evaluated in juvenile haddock fed graded levels of lipid. The catabolism of a radiolabelled FA, [1-(14)C]palmitoyl-CoA, thro...
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Atlantic salmon (4.7+or-0.2 g body weight) were fed to appetite 3 times daily on diets containing 1.15, 1.40, 1.65, 1.90, 2.15, 2.40 and 2.65% lysine (as-fed basis) for 70 days. Broken-line regression of growth values against dietary lysine level estimated the dietary requirement of lysine to be 1.9...
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In 1996 at AquaBounty Farms (Prince Edward Island, Canada) the rates of routine oxygen consumption of 660 growth-enhanced transgenic Atlantic salmon (carrying a chinook salmon growth hormone gene driven by an ocean pout antifreeze gene promoter) were compared with that of 660 non-transgenic salmon, ...
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The effects were examined of replacing part or all of the soyabean meal in the starter and finisher diets for male broiler chickens with ground, roasted, full-fat soyabeans from either a high-protein (AC Proteus) or conventional (Baron) cultivar. The starter (1-21 days) and finisher (22-36 days) die...
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In two experiments with 57 rats, the maintenance energy requirement (MER) of adult rats with different degrees of body fatness was proportional to metabolic body size and the combined equation was MER (kJ/day) = 394.8 Wkg0.75. Results indicated that the gains in protein and fat were nonlinear, the r...
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Triplicate groups of Atlantic salmon (Salmo salar) fingerlings, about 4.7+or-0.2 g, were fed to appetite on diets containing 1.24, 1.76, 1.90, 2.19, 2.45, 2.68 and 2.94% lysine and gross energy 24.1 MJ/kg of diet (DM basis, DMB) for 70 days. The salmon were reared in water salinity 10 ppt at 15 degr...
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15 multiparous Holstein cows in mid to late lactation were fed on lucerne silage and a concentrate diet (barley 747, maize 200 and molasses 30 kg/t) supplemented with soyabean meal (control) or raw or roasted lupin seeds in a Latin square arrangement consisting of three 4-week periods. Chemical comp...
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The influence of food deprivation on the rate of oxygen consumption and the rate of mobilization/utilization of energy reserves in F2 generation growth-enhanced transgenic Atlantic salmon were compared relative to their non-transgenic counterparts, over a pre-smolt weight interval of 8 to 55 g. Thro...
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The effect on nutritional quality of barley, maize, oats and wheat after flame roasting at 3 temperatures for each cereal (between 74 and 193 degrees C) in a commercial propane heated roaster at 67, 100 and 133% of the manufacturer's suggested temperatures was studied. A sample of unroasted material...
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For up to 26 days mature wethers were given a diet with 25% spent coffee grounds, a by-product of the instant-coffee industry. The coffee grounds had crude protein 10, crude fibre 44, ether extract 26, ash 0.75, moisture 8 and tannic acid 0.9%. The diet was mixed 50:50 (by weight) with water to over...
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Blood glucose, free fatty acids, insulin, thyroxine and free thyroxine were measured in fat (weight 90 kg) and thin (55 kg) adult sheep at 4 levels of feed intake. There were differences between groups in blood metabolites and hormones and the possibility of insulin resistance occurring in fat rumin...
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Fish meals (herring, menhaden, and anchovy), commercially available in Atlantic Canada and a Norwegian fish meal (Norse-LT94Reg.) formulated to contain 0, 16, 28 or 40% protein were evaluated for protein quality by in vitro assays and by growth studies with Atlantic salmon fingerlings. Pepsin digest...
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The N degradability and N digestibility of raw, roasted or extruded oilseeds were studied using an in vitro enzyme method. The N degradability and N digestibility of canola, linseed and soybean were calculated based on the proportional difference in N remaining after incubation and the initial N con...
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Nine multiparous cows in early lactation were fed alfalfa silage ad libitum twice daily, a grain-based concentrate five times daily, and one of three protein sources five times daily. Supplemental proteins were soya-bean meal, raw coarse-ground sweet white lupins or roasted coarse-ground sweet white...
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