Preface * Fatty acids and fertility in dairy cows * Environmental and genetic influences on successful heifer rearing * Reducing dietary phosphorus inputs within dairy systems * Practical aspects of feeding grass to dairy cows * Practical considerations of feed evaluation systems for dairy cows * Adapting livestock production systems to climate change * Legislation affecting animal production systems * Mycotoxin issues in farm animals and strategies to reduce mycotoxins in animal feeds * The effect of nutrition on stress and immunity * Potential applications of GM technology * Influence of feed processing technology on pig performance * Piglet starter feeding in a changing business environment * Organic acids in pig diets * Amino acid requirements in piglets with special emphasis on tryptophan and valine * Factors affecting pork quality * List of participants * Index

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Recent Advances in Animal Nutrition

Recent advances in animal nutrition.

Nutritional value of faba bean (Vicia faba L.) seeds for feed and food

The use of grain legumes as a protein source in pig nutrition: a review.

Life history trade-offs are influenced by the diversity, availability and interactions of dietary antioxidants

1. Experiments were conducted to study the effects of dietary vicine (2, 6-diamino-4, 5 dihydroxy pyrimidine-5 (beta-D-glucopyranoside)) and supplemental vitamin E on the performance of laying hens and growing chicks, haemolysis of erythrocytes than birds fed on a control diet. 3. Vicine when fed to laying hens had a very dramatic effect. It depressed food consumption, egg weight, fertility and hatchability of eggs. Packed cell volume and erythrocyte haemoglobin levels and led to increased liver weights, liver glutathione levels, liver and plasma lipid levels, plasma lipid peroxide levels and erythrocyte haemolysis in vitro. Liver protein and plasma vitamin E:lipid levels were not altered. Vitamin E supplementation slightly increased egg weights, markedly improved fertility and hatchability of eggs and lowered liver weights and lipid levels but did not affect the other factors examined. 4. It is concluded that vicine which was isolated from faba beans (Vicia faba L.) has a marked influence on the metabolism of the laying hen and only a slight effect on growing chick. Vicine or its metabolites or both cause peroxidation of cellular components which result in abnormal lipid transport of synthesis or both, increased fragility of erythrocytes, and reduced fertility. These effects are overcome to varying extents by supplemental vitamin E.

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Effect of dietary vicine and vitamin E supplementation on the productive performance of growing and laying chickens.

Experiments were conducted to study the effects of dietary vicine [2,6-diamino-4,5-dihydroxy pyrimidine-5 (β-D-glucopyranoside)] on feed consumption, egg and yolk weight, egg production, egg fertility and hatchability, in vitro hemolysis of red blood cells, plasma lipid levels, and the peroxide, glutathione and vitamin E levels in plasma and/or liver. Vicine, when fed to laying hens, reduced the number of developing ova, egg and yolk weights and the fertility and hatchability of eggs. Yolks from vicine-fed birds had a lower ratio of yolk height:diameter and increased incidence of blood spots. Vicine consumption also elevated plasma lipid and lipid peroxide levels, increased erythrocyte hemolysis, and depressed the ratio of plasma vitamin E:lipid. In addition these birds had heavier livers with higher lipid peroxide and GSH levels. However, liver and plasma protein and liver lipid levels were not affected by dietary vicine. The effects of dietary vicine in these studies were not due to altered feed consump...

David S. Muduuli

Papers

Effect of dietary vicine and vitamin E supplementation on the productive performance of growing and laying chickens.

Effect of dietary vicine on the productive performance of laying chickens

Purification and some properties of vicine and convicine isolated from faba bean (Vicia faba L.) protein concentrate