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Papers by Emmanuel Nwokolo

Qualitas Plantarum Plant Foods for Human Nutrition, 1987

A tuberous sclerotium of the mushroomPleurotus tuber regium was analysed for proximate, amino aci... more A tuberous sclerotium of the mushroomPleurotus tuber regium was analysed for proximate, amino acid and mineral content. The sclerotium had low protein, ether extract, amino acid and mineral content compared to the pileus of the same mushroom and similar mushrooms. Cystine, methionine, serine, arginine and lysine were exceptionally low. Because the sclerotium is milled with melon seeds in traditional preparation

Poultry Science, 1989

Combinations of barley and full-fat canola seed (FFCS) were evaluated in two experiments with pul... more Combinations of barley and full-fat canola seed (FFCS) were evaluated in two experiments with pullets. In Experiment 1, diets containing 40% barley plus FFCS or canola meal (CM) were compared with wheat-soybean and barley-soybean control diets. In Experiment 2, various steam-pelleted barley-FFCS mixtures (80:20 70:30, 60:40, 50:50) were used at the 40% dietary level in pullet diets. Diets within each experiment were isocaloric and isonitrogenous. Egg production was depressed when hens were fed unpelleted barley-FFCS diets, whereas hens fed pelleted barley-FFCS diets produced at a rate equivalent to those fed the control diet. Feed consumption, feed conversion, and egg weight were not influenced by dietary treatment. Yolk color index was significantly increased in eggs from hens fed diets containing increasing amounts of FFCS. In Experiment 2, contents of linoleic acid, linolenic acid, and docosahexaenoic acid in the yolk increased in a linear manner with increasing content of FFCS in the diets.

Nutrition Research, 1988

In laying hens fed eanola oil (0% elaidic acid) or hydrogenated canola oil (35.4% elaidic acid), ... more In laying hens fed eanola oil (0% elaidic acid) or hydrogenated canola oil (35.4% elaidic acid), peak incorporation of elaidic acid into egg lipids was attained after I0 days, elaidic acid being incorporated at the expense of oleic acid. In developing embryos from hens fed these oils, there was a progressive reduction in content of saturated fatty acids (C16:0, C18:0) and an increase in content of oleic, elaidic and linoleic acid content of embryonic lipids. Elaidic acid was incorporated into embryonic lipids initially gradually and subsequently rapidly, not at the expense of oleic acid but alongside it.

Journal of the Science of Food and Agriculture, 1987

... Page 4. 240 E. Nwokolo, J . S. Sim ... Toasting was achieved by oven-drying the meals at 85°C... more ... Page 4. 240 E. Nwokolo, J . S. Sim ... Toasting was achieved by oven-drying the meals at 85°C for 24 h. There were three treatments (melon, pumpkin and soya bean meal), three replicates and 10 chicks per replicate, also in a completely randomised design. ...

Canadian Journal of Animal Science, 1991

Intact full-fat oil seeds might be more resistant to oxidation than extracted and refined oils an... more Intact full-fat oil seeds might be more resistant to oxidation than extracted and refined oils and might therefore be used as sources of dietary fat. The present study was conducted to examine and compare the influence of feeding full-fat flax and canola seeds and oils on the plasma and tissue lipids of the rat. Male weanling Sprague Dawley rats (n = 4) were housed individually in metabolic cages and fed isoenergetic and isonitrogenous diets containing full-fat flax (FFF), flax meal + flax oil (FO), full-fat canola (FFC), canola meal + canola oil (CO), and soybean meal + animal tallow (AT). After 6 wk of feeding, plasma cholesterol levels were significantly (P

Animal Feed Science and Technology, 1985

Nwokolo, E. and Oji, U.I., 1985. Variation in metabolizable energy content of raw or autoclaved w... more Nwokolo, E. and Oji, U.I., 1985. Variation in metabolizable energy content of raw or autoclaved white and brown varieties of three tropical grain legumes. Anita. Feed , Sci. Technol., 13: 141-146. White and brown varieties of three tropical grain legumes: pigeon pea, African yam bean and cowpea, were studied using soya bean meal as control. Raw or autoclaved (2.109 kg/cm 2 for 30min) samples of test legumes were analyzed for proximate constituents and evaluated for metabolizable energy with three-week-old Hubbard strain chicks. Test legumes were included at a 25% level of substitution in the diets. Metabolizable energy values differed (P ~ 0.05) between grain legumes, but there were no significant differences between white and brown varieties within legume species. Autoclaved varieties had significantly higher ME values than raw varieties. In all test grains, whether raw or autoclaved, the ME values obtained were higher (P ~ 0.05) than the ME value of the soya bean meal based control diet. It is presumed that autoclaving destroyed some antinutritional factors as well as increasing nutrient digestibility in the test grains.

Animal Feed Science and Technology, 1986

... BV, Amsterdam Printed in The Netherlands A COMPARISON OF METABOLIZABLE ENERGY CONTENT OF EIGH... more ... BV, Amsterdam Printed in The Netherlands A COMPARISON OF METABOLIZABLE ENERGY CONTENT OF EIGHT COMMON FEED INGREDIENTS DETERMINED WITH YOUNG GUINEA FOWLS (KEETS) AND PULLET CHICKS EMMANUEL NWOKOLO Rivers State ... Anita. ...

Plant Foods for Human Nutrition, 1987

Mineral, amino acid and fatty acid composition of pigeon pea meal were determined by analysis, wh... more Mineral, amino acid and fatty acid composition of pigeon pea meal were determined by analysis, while with chick essays, availability (true digestibility) of minerals and amino acids in the meal were estimated. Gross energy, metabolizable energy and true protein digestibility experiments were also conducted. Pigeon pea meal had a very high content of potassium, high content of potassium, high content of phosphorus, moderate content of calcium and magnesium and low content of iron, zinc, copper and manganese. Average availability of minerals was 58.09%. Amino acid content was low, especially cystine and methionine. Amino acid availability was 82.32%, lower than amino acid availability of soybean meal (greater than 90%). Pigeon pea lipids were predominantly saturated fatty acids (69.04%) with low content of unsaturated fatty acids (30.69%) and a total absence of linolenic acid. Metabolizable energy content (N-corrected) was 11.08 MJ/kg in raw pigeon pea and 12.03 MJ/kg in toasted pigeon pea meal.