Brian K Speake

Summary

Affiliation: Scottish Agricultural College
Country: UK

Publications

  1. ncbi request reprint Timing of incorporation of docosahexaenoic acid into brain and muscle phospholipids during precocial and altricial modes of avian development
    Brian K Speake
    Animal Health Group, SAC, West Mains Road, Edinburgh, EH9 3JG, UK
    Comp Biochem Physiol B Biochem Mol Biol 141:147-58. 2005
  2. ncbi request reprint Interspecies variation in yolk selenium concentrations among eggs of free-living birds: The effect of phylogeny
    Athanasios C Pappas
    Avian Science Research Centre, Animal Health Group, SAC, Auchincruive, Ayr KA6 5HW, UK
    J Trace Elem Med Biol 20:155-60. 2006
  3. ncbi request reprint The preferential mobilisation of C20 and C22 polyunsaturated fatty acids from the adipose tissue of the chick embryo: potential implications regarding the provision of essential fatty acids for neural development
    B K Speake
    Department of Biochemical Sciences, Scottish Agricultural College, Ayr, UK
    Biochim Biophys Acta 1345:317-26. 1997
  4. ncbi request reprint Biosynthesis of oleic, arachidonic and docosahexaenoic acids from their C18 precursors in the yolk sac membrane of the avian embryo
    Brian K Speake
    Lipid Laboratory, Avian Science Research Centre, SAC, Auchincruive, Ayr KA6 5HW, Scotland, UK
    Comp Biochem Physiol B Biochem Mol Biol 138:407-14. 2004
  5. ncbi request reprint Differential incorporation of docosahexaenoic and arachidonic acids by the yolk sac membrane of the avian embryo
    Brian K Speake
    Lipid Laboratory, Avian Science Research Centre, SAC, Auchincruive, Ayr KA6 5HW, Scotland, UK
    Comp Biochem Physiol B Biochem Mol Biol 136:357-67. 2003
  6. ncbi request reprint Fatty acid composition of the adipose tissue and yolk lipids of a bird with a marine-based diet, the emperor penguin (Aptenodytes forsteri)
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Ayr, United Kingdom
    Lipids 34:283-90. 1999
  7. ncbi request reprint Distribution of lipids from the yolk to the tissues during development of the water python (Liasis fuscus)
    B K Speake
    Avian Science Research Centre, SAC, KA6 5HW, Auchincruive, Ayr, UK
    J Comp Physiol B 173:541-7. 2003
  8. ncbi request reprint Lipid composition of eggs of an oviparous lizard (Bassiana duperreyi)
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Ayr, United Kingdom
    Lipids 34:1207-10. 1999
  9. ncbi request reprint Establishment of the fatty acid profile of the brain of the king penguin (Aptenodytes patagonicus) at hatch: effects of a yolk that is naturally rich in n-3 polyunsaturates
    Brian K Speake
    Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom
    Physiol Biochem Zool 76:187-95. 2003
  10. ncbi request reprint Lipids of the eggs and neonates of oviparous and viviparous lizards
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Auchincruive, KA6 5HW, Ayr, UK
    Comp Biochem Physiol A Mol Integr Physiol 127:453-67. 2000

Collaborators

Detail Information

Publications35

  1. ncbi request reprint Timing of incorporation of docosahexaenoic acid into brain and muscle phospholipids during precocial and altricial modes of avian development
    Brian K Speake
    Animal Health Group, SAC, West Mains Road, Edinburgh, EH9 3JG, UK
    Comp Biochem Physiol B Biochem Mol Biol 141:147-58. 2005
    ..The results indicate a clear distinction between altricial and non-altricial avian species in the timing of tissue DHA accretion during development, presumably reflecting differences in neonatal functional maturity...
  2. ncbi request reprint Interspecies variation in yolk selenium concentrations among eggs of free-living birds: The effect of phylogeny
    Athanasios C Pappas
    Avian Science Research Centre, Animal Health Group, SAC, Auchincruive, Ayr KA6 5HW, UK
    J Trace Elem Med Biol 20:155-60. 2006
    ..Nevertheless, the Se concentrations in the yolks of all the free-living species were far higher (4-21-fold) than that achieved in the yolk of the domestic chicken consuming a standard basal diet...
  3. ncbi request reprint The preferential mobilisation of C20 and C22 polyunsaturated fatty acids from the adipose tissue of the chick embryo: potential implications regarding the provision of essential fatty acids for neural development
    B K Speake
    Department of Biochemical Sciences, Scottish Agricultural College, Ayr, UK
    Biochim Biophys Acta 1345:317-26. 1997
    ....
  4. ncbi request reprint Biosynthesis of oleic, arachidonic and docosahexaenoic acids from their C18 precursors in the yolk sac membrane of the avian embryo
    Brian K Speake
    Lipid Laboratory, Avian Science Research Centre, SAC, Auchincruive, Ayr KA6 5HW, Scotland, UK
    Comp Biochem Physiol B Biochem Mol Biol 138:407-14. 2004
    ....
  5. ncbi request reprint Differential incorporation of docosahexaenoic and arachidonic acids by the yolk sac membrane of the avian embryo
    Brian K Speake
    Lipid Laboratory, Avian Science Research Centre, SAC, Auchincruive, Ayr KA6 5HW, Scotland, UK
    Comp Biochem Physiol B Biochem Mol Biol 136:357-67. 2003
    ..It is suggested that the selective incorporation of yolk-derived DHA into the triacylglycerol of secreted lipoproteins represents part of a mechanism for directing this polyunsaturate to particular embryonic tissues...
  6. ncbi request reprint Fatty acid composition of the adipose tissue and yolk lipids of a bird with a marine-based diet, the emperor penguin (Aptenodytes forsteri)
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Ayr, United Kingdom
    Lipids 34:283-90. 1999
    ..8+/-0.1 and 3.6+/-0.3% in triacylglycerol. About 95% of the total vitamin E in the yolks was in the form of alpha-tocopherol with gamma-tocopherol forming the remainder. Two species of carotenoids, one identified as lutein, were present...
  7. ncbi request reprint Distribution of lipids from the yolk to the tissues during development of the water python (Liasis fuscus)
    B K Speake
    Avian Science Research Centre, SAC, KA6 5HW, Auchincruive, Ayr, UK
    J Comp Physiol B 173:541-7. 2003
    ..This contrasts with embryos of birds where cholesteryl ester forms up to 80% of total liver lipid and suggests that the mechanism of lipid transfer in the water python embryo differs in some respects from the avian situation...
  8. ncbi request reprint Lipid composition of eggs of an oviparous lizard (Bassiana duperreyi)
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Ayr, United Kingdom
    Lipids 34:1207-10. 1999
    ..8 +/- 2.3%) w/w of total phospholipid) and was enriched in linoleic acid, whereas phosphatidylethanolamine, which formed 20.4 +/- 1.9%(w/w) of total phospholipid, contained higher proportions of arachidonic and docosahexaenoic acids...
  9. ncbi request reprint Establishment of the fatty acid profile of the brain of the king penguin (Aptenodytes patagonicus) at hatch: effects of a yolk that is naturally rich in n-3 polyunsaturates
    Brian K Speake
    Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom
    Physiol Biochem Zool 76:187-95. 2003
    ..Only about 1% of the amount of DHA initially present in the yolk was recovered in the brain of the penguin at hatch. There was no preferential uptake of DHA from the yolk during development of the king penguin...
  10. ncbi request reprint Lipids of the eggs and neonates of oviparous and viviparous lizards
    B K Speake
    Department of Biochemistry and Nutrition, Scottish Agricultural College, Auchincruive, KA6 5HW, Ayr, UK
    Comp Biochem Physiol A Mol Integr Physiol 127:453-67. 2000
    ....
  11. ncbi request reprint Evidence for placental transfer of lipids during gestation in the viviparous lizard, Pseudemoia entrecasteauxii
    Brian K Speake
    Animal Health Group, SAC, West Mains Road, Edinburgh, EH9 3JG, UK
    Comp Biochem Physiol A Mol Integr Physiol 139:213-20. 2004
    ..We conclude that there is net transfer of fatty acids across the placenta to the fetus of P. entrecasteauxii and a high degree of selectivity in the use of the various fatty acids for fetal tissue lipid synthesis...
  12. ncbi request reprint Comparison of the fatty-acid compositions of prey items and yolks of Australian insectivorous scincid lizards
    Brian K Speake
    Avian Science Research Centre, SAC, KA6 5HW, Auchincruive, Ayr, UK
    J Comp Physiol B 174:393-7. 2004
    ..However, the docosahexaenoic acid of the egg lipids cannot derive from the diet and must, therefore, be formed by biosynthesis in the maternal liver, using dietary alpha-linolenic and eicosapentaenoic acids as precursors...
  13. ncbi request reprint Effect of canthaxanthin content of the maternal diet on the antioxidant system of the developing chick
    A P Surai
    Avian Science Research Centre, Animal Health Group, SAC, Auchincruive, Ayr, Scotland
    Br Poult Sci 44:612-9. 2003
    ..6. The results support an idea that dietary carotenoids can modulate antioxidant systems of the developing chicken...
  14. ncbi request reprint Transfer of Vitamins E and A from yolk to embryo during development of the king penguin (Aptenodytes patagonicus)
    P F Surai
    Lipid and Antioxidant Laboratory, Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom
    Physiol Biochem Zool 74:928-36. 2001
    ....
  15. ncbi request reprint Metabolic fates of yolk lipid and individual fatty acids during embryonic development of the coot and moorhen
    Athanasios C Pappas
    Avian Science Research Centre, SAC, Auchincruive, Ayr, UK
    Comp Biochem Physiol B Biochem Mol Biol 147:102-9. 2007
    ....
  16. ncbi request reprint Fatty acid esterification in the yolk sac membrane of the avian embryo
    K A Powell
    Avian Science Research Centre, SAC, Auchincruive, Ayr, KA6 5HW, UK
    J Comp Physiol B 174:163-8. 2004
    ..The results support the hypothesis that yolk lipid is hydrolyzed and re-esterified during transfer across the YSM...
  17. ncbi request reprint Lipid-soluble and water-soluble antioxidant activities of the avian intestinal mucosa at different sites along the intestinal tract
    Jennifer A McLean
    Animal Health Group, SAC, West Mains Road, Edinburgh EH9 3JG, UK
    Comp Biochem Physiol B Biochem Mol Biol 141:366-72. 2005
    ....
  18. ncbi request reprint The selenium intake of the female chicken influences the selenium status of her progeny
    Athanasios C Pappas
    Animal Health Group, SAC, West Mains Road, Edinburgh EH9 3JG, UK
    Comp Biochem Physiol B Biochem Mol Biol 142:465-74. 2005
    ..However, when chicks hatching from low-Se eggs were placed on a high Se diet, their tissue Se concentrations at 7 days of age were markedly higher than the values in chicks from high-Se eggs placed on the low-Se diet...
  19. ncbi request reprint Relationship between spermatozoan lipid composition and fertility during aging of chickens
    S Cerolini
    Istituto per la Difesa e la Valorizzazione del Germoplasma Animale, Consiglio Nazionale delle Ricerche, Milano, Italy
    Biol Reprod 57:976-80. 1997
    ..The results suggest that the lipid and fatty acid compositions of spermatozoa may be important predictors of fertility...
  20. ncbi request reprint Effect of supplementing the hen's diet with vitamin A on the accumulation of vitamins A and E, ascorbic acid and carotenoids in the egg yolk and in the embryonic liver
    P F Surai
    Department of Physiology, Biochemistry and Nutrition, Poultry Research Institute, Ukraine
    Br Poult Sci 39:257-63. 1998
    ..6. It is concluded that excessive provision of vitamin A to the laying hen results in an adverse effect on vitamin E, carotenoids and ascorbic acid in the embryonic/neonatal liver and can compromise the antioxidant status of the progeny...
  21. ncbi request reprint Acyltransferase activities in the yolk sac membrane of the chick embryo
    A M Murray
    Department of Biochemistry and Nutrition, Scottish Agricultural College, United Kingdom
    Lipids 34:929-35. 1999
    ..The results also suggest that the YSM has the capacity to perform simultaneously beta-oxidation at a high rate in order to provide energy for the lipid transfer process...
  22. ncbi request reprint Designer egg evaluation in a controlled trial
    P F Surai
    Department of Biochemistry and Nutrition, SAC, Auchincruive, Ayr, Scotland KA6 5HW, UK
    Eur J Clin Nutr 54:298-305. 2000
    ..To evaluate the ability of designer eggs enriched in vitamin E, lutein, selenium (Se) and docosahexaenoic acid (DHA) to deliver micronutrients to the human in a palatable and visually acceptable form...
  23. ncbi request reprint Phospholipid fatty acid composition, vitamin E content and susceptibility to lipid peroxidation of duck spermatozoa
    P F Surai
    Department of Biochemistry and Nutrition, Scottish Agricultural College Auchincruive, Ayr, Scotland UK
    Theriogenology 53:1025-39. 2000
    ....
  24. ncbi request reprint Carotenoid discrimination by the avian embryo: a lesson from wild birds
    P F Surai
    Avian Science Research Centre, Scottish Agricultural College, Auchincruive, KA6 5HW, Ayr, UK
    Comp Biochem Physiol B Biochem Mol Biol 128:743-50. 2001
    ..The results indicate that avian embryos discriminate between different carotenoids during their distribution from the yolk to the various tissues...
  25. ncbi request reprint Captivity diets alter egg yolk lipids of a bird of prey (the American kestrel) and of a galliforme (the red-legged partridge)
    P F Surai
    Avian Science Research Centre, Scottish Agricultural College, Auchincruive, Ayr KA6 5HW, United Kingdom
    Physiol Biochem Zool 74:153-60. 2001
    ..Thus, captive breeding of both the kestrel and the partridge increases the n-6/n-3 polyunsaturate ratio of the yolk lipids...
  26. ncbi request reprint Effects of feeding tuna oil on the lipid composition of pig spermatozoa and in vitro characteristics of semen
    J A Rooke
    Animal Biology Division, SAC, Craibstone Estate, Aberdeen AB21 9YA, UK
    Reproduction 121:315-22. 2001
    ..Feeding tuna oil increased the proportion of spermatozoa with progressive motility and with a normal acrosome score and reduced the proportion of spermatozoa with abnormal morphologies...
  27. ncbi request reprint Maternal docosahexaenoic acid supplementation and fetal accretion
    Colette Montgomery
    Department of Child Health, University of Glasgow, Scotland, UK
    Br J Nutr 90:135-45. 2003
    ..Maternal DHA supplementation significantly increases maternal DHA status and limits the last trimester decline in maternal status, aiding preferential transfer of DHA from mother to fetus...
  28. ncbi request reprint Embryonic development within carotenoid-enriched eggs influences the post-hatch carotenoid status of the chicken
    Filiz Karadas
    Department of Animal Science, University of Yuzuncu Yil, Turkey
    Comp Biochem Physiol B Biochem Mol Biol 141:244-51. 2005
    ....
  29. ncbi request reprint Metabolic fate of yolk fatty acids in the developing king penguin embryo
    Rene Groscolas
    Centre d Ecologie et Physiologie Energetiques, Centre National de la Recherche Scientifique, Strasbourg, France
    Am J Physiol Regul Integr Comp Physiol 285:R850-61. 2003
    ..The preferential partitioning of 20:4n-6 into the structural lipid of the embryo in the face of its low content in the yolk may reflect the important roles of this FA in tissue function...
  30. ncbi request reprint Energy and nutrient utilisation by embryonic reptiles
    Michael B Thompson
    School of Biological Sciences and Wildlife Research Institute, Heydon Laurence Building A08, University of Sydney, NSW 2006, Australia
    Comp Biochem Physiol A Mol Integr Physiol 133:529-38. 2002
    ....
  31. ncbi request reprint FA composition of heart and skeletal muscle during embryonic development of the king penguin
    Frederic Decrock
    Centre d Ecologie et Physiologie Energetiques, Centre National de la Recherche Scientifique, Associé à l Université Louis Pasteur, Strasbourg, France
    Lipids 37:407-15. 2002
    ..Thus, although ARA-rich PL profiles are achieved in the heart and muscle of the penguin embryo, these profiles are significantly affected by the high n-3 content of the yolk...
  32. ncbi request reprint Antioxidant systems of the developing quail embryo are compromised by mycotoxin aurofusarin
    Julia E Dvorska
    Department of Veterinary Medicine, Sumy State Agrarian University, Ukraine
    Comp Biochem Physiol C Toxicol Pharmacol 131:197-205. 2002
    ..It is suggested that a compromised antioxidant system of the egg yolk and embryonic tissues could predispose quails to increased mortality at late stages of their embryonic development...
  33. ncbi request reprint Protective effect of modified glucomannans against aurofusarin-induced changes in quail egg and embryo
    Julia E Dvorska
    Sumy National Agrarian University, Sumy, Ukraine
    Comp Biochem Physiol C Toxicol Pharmacol 135:337-43. 2003
    ..It is suggested that a combination of mycotoxin adsorbents and natural antioxidants could be the next step in counteracting mycotoxins in animal feed...
  34. ncbi request reprint Evolution of viviparity: what can Australian lizards tell us?
    Michael B Thompson
    School of Biological Sciences and Wildlife Research Institute, Heydon Laurence Building A08, University of Sydney, NSW 2006, Sydney, Australia
    Comp Biochem Physiol B Biochem Mol Biol 131:631-43. 2002
    ..Once such a phylogeny is available, we are in a position to propose specific hypotheses about the evolution of viviparity that can be tested using another lineage of amniotes, possibly Mabuya group skinks...
  35. ncbi request reprint Protective effect of modified glucomannans and organic selenium against antioxidant depletion in the chicken liver due to T-2 toxin-contaminated feed consumption
    Julia E Dvorska
    Sumy National University, Sumy, Ukraine
    Comp Biochem Physiol C Toxicol Pharmacol 145:582-7. 2007
    ..Thus, the data clearly indicate a major protective effect of the mycotoxin-binder in combination with organic Se against the detrimental consequences of T-2 toxin-contaminated feed consumption by growing chickens...