Professor TIM PARR's Outputs (47)

Effects of feed nutrients on growth, development and the deposition of protein and fat in Tenebrio molitor larvae (2025)
Journal Article
Tamim, B., Salter, A., Parr, T., & Brameld, J. (2025). Effects of feed nutrients on growth, development and the deposition of protein and fat in Tenebrio molitor larvae. Journal of Insects as Food and Feed, 1-14. https://doi.org/10.1163/23524588-00001331

An understanding of the impact of dietary nutritional composition on growth, development and composition of Tenebrio molitor larvae (mealworms) could help optimise production systems. Replicate containers of mealworms fed for 24 days on synthetic cel... Read More about Effects of feed nutrients on growth, development and the deposition of protein and fat in Tenebrio molitor larvae.

Effects of feeding earthworm or vermicompost on early life performance of broilers under challenging dietary conditions (2024)
Journal Article
Daş, G., Brameld, J. M., Parr, T., Seyedalmoosavi, M. M., Görs, S., & Metges, C. C. (2024). Effects of feeding earthworm or vermicompost on early life performance of broilers under challenging dietary conditions. Poultry Science, 103(12), Article 104341. https://doi.org/10.1016/j.psj.2024.104341

We investigated if feeding earthworms (EW) or vermicompost (VC) to broilers improves performance and aids in coping with dietary challenges from a soluble non-starch polysaccharide (NSP)-enriched diet (negative control diet; CON-). Newly-hatched male... Read More about Effects of feeding earthworm or vermicompost on early life performance of broilers under challenging dietary conditions.

Comparative analyses of the nutritional and antinutritional composition of pod flours from Neltuma spp. (Fabaceae, Caesalpinioideae) species from drylands of Mexico, Kenya and Tanzania (2024)
Journal Article
González-Carranza, Z. H., Bone, G., Castro-Castro, A., González-Elizondo, M. S., Soto-Luzania, X., López-Franco, Y. L., Koech, O., Parr, T., Kilawe, C. J., Velázquez-Quiñones, S. E., González -Laredo, R. F., & Ríos-Saucedo, J. C. (2024). Comparative analyses of the nutritional and antinutritional composition of pod flours from Neltuma spp. (Fabaceae, Caesalpinioideae) species from drylands of Mexico, Kenya and Tanzania. Future Foods, 10, Article 100434. https://doi.org/10.1016/j.fufo.2024.100434

Identifying novel risk-resilient diets is urgent to address food insecurity and tackle global hunger and malnutrition. This study evaluated the suitability of mesquite (Neltuma spp.) pod flours as food staples for human nourishment and compared nutri... Read More about Comparative analyses of the nutritional and antinutritional composition of pod flours from Neltuma spp. (Fabaceae, Caesalpinioideae) species from drylands of Mexico, Kenya and Tanzania.

The juvenile hormone analogue, pyriproxifen, alters protein and fat composition of Tenebrio molitor larvae (2024)
Journal Article
Hill, V., Lopez-Viso, C., Brameld, J., Salter, A., & Parr, T. (2024). The juvenile hormone analogue, pyriproxifen, alters protein and fat composition of Tenebrio molitor larvae. Journal of Insects as Food and Feed, https://doi.org/10.1163/23524588-00001043

Maximising the yield of product from livestock is common practice in the agriculture industry and there is potential to extend this practice to the emerging insect industry, to produce high-quality, sustainable protein. Tenebrio molitor larvae, commo... Read More about The juvenile hormone analogue, pyriproxifen, alters protein and fat composition of Tenebrio molitor larvae.

Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter (2024)
Journal Article
Alliband, K. H., Parr, T., Jethwa, P. H., & Brameld, J. M. (2024). Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter. Frontiers in Physiology, 14, Article 1322677. https://doi.org/10.3389/fphys.2023.1322677

Background: Skeletal muscle development during embryogenesis depends on proliferation of myoblasts followed by differentiation into myotubes/multinucleated myofibers. Vitamin D (VD) has been shown to affect these processes, but there is conflicting e... Read More about Active vitamin D increases myogenic differentiation in C2C12 cells via a vitamin D response element on the myogenin promoter.

Changes in nutrient composition and gene expression in growing mealworms (Tenebrio molitor) (2023)
Journal Article
Lopez-Viso, C., Castellanos-Uribe, M., May, T., Brameld, J., Salter, A., & Parr, T. (2023). Changes in nutrient composition and gene expression in growing mealworms (Tenebrio molitor). Journal of Insects as Food and Feed, 10(4), 601-610. https://doi.org/10.1163/23524588-20230143

Insects are of high interest as a sustainable source of nutrients to be included in the food production system. The larvae of Tenebrio molitor, commonly known as yellow mealworms (MW), have a high protein content, which means potential applications i... Read More about Changes in nutrient composition and gene expression in growing mealworms (Tenebrio molitor).

Fermentation technology enhances the nutritional quality of underutilized Bambara groundnut – a review (2023)
Journal Article
Tee, A. J., Lim, Y. S., Brameld, J. M., Massawe, F., Parr, T., & Salter, A. M. (2023). Fermentation technology enhances the nutritional quality of underutilized Bambara groundnut – a review. Food Biotechnology, 37(2), 106-135. https://doi.org/10.1080/08905436.2023.2201307

Bambara groundnut (BG) offers great potential for sustainable food and nutritional security in the face of a growing population and changing climate. However, its utilization remains restricted by the hard-to-cook phenomenon of seed and the presence... Read More about Fermentation technology enhances the nutritional quality of underutilized Bambara groundnut – a review.

The effects of exogenous fibrolytic enzymes on the in vitro release of xylooligosaccharides and monosaccharides varies across six varieties of wheat (2022)
Journal Article
Dale, T., Bedford, M. R., King, J., Tucker, G. A., Brameld, J. M., & Parr, T. (2023). The effects of exogenous fibrolytic enzymes on the in vitro release of xylooligosaccharides and monosaccharides varies across six varieties of wheat. Animal Feed Science and Technology, 295, Article 115526. https://doi.org/10.1016/j.anifeedsci.2022.115526

Wheat is a widely used cereal grain for pig and poultry feeds globally. Despite this, there are noticeable differences in its nutritive value, potentially due to varying characteristics like inherent non-starch polysaccharide (NSP) content and compos... Read More about The effects of exogenous fibrolytic enzymes on the in vitro release of xylooligosaccharides and monosaccharides varies across six varieties of wheat.

The effects of exogenous fibrolytic enzymes on the in vitro generation of xylooligosaccharides and monosaccharides is dependent upon cereal type (2022)
Journal Article
Dale, T., Bedford, M. R., Tucker, G. A., Brameld, J. M., & Parr, T. (2022). The effects of exogenous fibrolytic enzymes on the in vitro generation of xylooligosaccharides and monosaccharides is dependent upon cereal type. Animal Feed Science and Technology, 292, Article 115406. https://doi.org/10.1016/j.anifeedsci.2022.115406

Fibrolytic enzymes are routinely added to non-ruminant livestock feeds to help degrade the non-starch polysaccharide (NSP) contents and thereby improve feed efficiency. This study investigated the range of xylooligosaccharides (XOS) and monosaccharid... Read More about The effects of exogenous fibrolytic enzymes on the in vitro generation of xylooligosaccharides and monosaccharides is dependent upon cereal type.

Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle (2021)
Journal Article
Brearley-Sholto, M. C., Loczenski-Brown, D. M., Jones, S., Daniel, Z. C., Ebling, F. J., Parr, T., & Brameld, J. M. (2021). Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle. Scientific Reports, 11(1), 1-13. https://doi.org/10.1038/s41598-021-99432-4

We previously reported that growth promoter-induced skeletal muscle hypertrophy co-ordinately upregulated expression of genes associated with an integrated stress response (ISR), as well as potential ISR regulators. We therefore used Adeno-Associated... Read More about Effect of AAV-mediated overexpression of ATF5 and downstream targets of an integrated stress response in murine skeletal muscle.

In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review (2021)
Journal Article
Alliband, K. H., Kozhevnikova, S. V., Parr, T., Jethwa, P. H., & Brameld, J. M. (2021). In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review. Frontiers in Physiology, 12, Article 736708. https://doi.org/10.3389/fphys.2021.736708

Vitamin D (VD) deficiency is associated with muscle weakness. A reduction in the incidence of falls in the elderly following VD supplementation and identification of the VD receptor within muscle cells suggests a direct effect of VD on muscle, but li... Read More about In vitro Effects of Biologically Active Vitamin D on Myogenesis: A Systematic Review.

Suitability of insects for animal feeding. (2021)
Book Chapter
Hawkey, K., Brameld, J., Parr, T., Salter, A., & Hall, H. (2021). Suitability of insects for animal feeding. In H. Hall, E. Fitches, & R. Smith (Eds.), Insects as Animal Feed: Novel Ingredients for Use in Pet, Aquaculture and Livestock Diets (26-38). CAB International. https://doi.org/10.1079/9781789245929.0004

This chapter explores the nutritional composition of insects and the potential benefits and drawbacks for their inclusion into pet, poultry, pig, ruminant and aquatic animal feeds. Six species are most commonly described for use in animal feed, namel... Read More about Suitability of insects for animal feeding..

98 The effect of mezquite pod flour in a wheat-based diet on broiler chicken growth performance (2021)
Presentation / Conference Contribution
Bone, G., Parr, T., Brameld, J., Elmes, M., Gonzalez-Carranza, Z., & Koech, O. 98 The effect of mezquite pod flour in a wheat-based diet on broiler chicken growth performance

Application Inclusion of Mezquite pod flour in broiler chicken diets significantly reduced weight gain, this could inform a recommendation against the use of non-processed Mezquite in broiler chicken diets. Introduction Mezquite is an under-utilised... Read More about 98 The effect of mezquite pod flour in a wheat-based diet on broiler chicken growth performance.

Response of the porcine MYH4-promoter and MYH4-expressing myotubes to known anabolic and catabolic agents in vitro (2021)
Journal Article
Brearley, M. C., Loczenski-Brown, D. M., Loughna, P. T., Parr, T., & Brameld, J. M. (2021). Response of the porcine MYH4-promoter and MYH4-expressing myotubes to known anabolic and catabolic agents in vitro. Biochemistry and Biophysics Reports, 25, Article 100924. https://doi.org/10.1016/j.bbrep.2021.100924

© 2021 The Authors Myosin heavy chain-IIB (MyHC-IIB; encoded by MYH4 or Myh4) expression is often associated with muscle hypertrophic growth. Unlike other large mammals, domestic pig breeds express MyHC-IIB at both the mRNA and protein level. Aim: To... Read More about Response of the porcine MYH4-promoter and MYH4-expressing myotubes to known anabolic and catabolic agents in vitro.

The phosphoenolpyruvate carboxykinase (PEPCK) inhibitor, 3-mercaptopicolinic acid (3-MPA), induces myogenic differentiation in C2C12 cells (2020)
Journal Article
Brearley, M. C., Daniel, Z. C., Loughna, P. T., Parr, T., & Brameld, J. M. (2020). The phosphoenolpyruvate carboxykinase (PEPCK) inhibitor, 3-mercaptopicolinic acid (3-MPA), induces myogenic differentiation in C2C12 cells. Scientific Reports, 10, Article 22177. https://doi.org/10.1038/s41598-020-79324-9

Phosphoenolpyruvate carboxykinase (PEPCK) is a gluconeogenic enzyme with a cytosolic (Pck1/PEPCK-C) and mitochondrial (Pck2/PEPCK-M) isoform. Here we investigate the effect of 3-mercaptopicolinic acid (3-MPA), a PEPCK inhibitor, on C2C12 muscle cells... Read More about The phosphoenolpyruvate carboxykinase (PEPCK) inhibitor, 3-mercaptopicolinic acid (3-MPA), induces myogenic differentiation in C2C12 cells.

Insects: A Potential Source of Protein and Other Nutrients for Feed and Food (2020)
Journal Article
Hawkey, K. J., Lopez-Viso, C., Brameld, J. M., Parr, T., & Salter, A. M. (2021). Insects: A Potential Source of Protein and Other Nutrients for Feed and Food. Annual Review of Animal Biosciences, 9(1), 333-354. https://doi.org/10.1146/annurev-animal-021419-083930

© 2021 Annual Reviews Inc.. All rights reserved. Sustainable production of healthy food for a growing global population, in the face of the uncertainties of climate change, represents a major challenge for the coming decade. Livestock provide food wi... Read More about Insects: A Potential Source of Protein and Other Nutrients for Feed and Food.

The effects of exogenous xylanase supplementation on the in vivo generation of xylooligosaccharides and monosaccharides in broilers fed a wheat-based diet (2020)
Journal Article
Dale, T., Hannay, I., Bedford, M. R., Tucker, G. A., Brameld, J., & Parr, T. (2020). The effects of exogenous xylanase supplementation on the in vivo generation of xylooligosaccharides and monosaccharides in broilers fed a wheat-based diet. British Poultry Science, 61(4), 471-481. https://doi.org/10.1080/00071668.2020.1751805

1. This study aimed to quantify xylanase-induced changes in soluble monosaccharides, xylooligosaccharides (XOS) and volatile fatty acid (VFA) contents of the different sections of the GIT and whether these relate to altered bird performance.
2. An... Read More about The effects of exogenous xylanase supplementation on the in vivo generation of xylooligosaccharides and monosaccharides in broilers fed a wheat-based diet.

Leucine and mTORc1 act independently to regulate 2-deoxyglucose uptake in L6 myotubes (2020)
Journal Article
Yin, Q., Brameld, J. M., Parr, T., & Murton, A. J. (2020). Leucine and mTORc1 act independently to regulate 2-deoxyglucose uptake in L6 myotubes. Amino Acids, 52, 477–486. https://doi.org/10.1007/s00726-020-02829-0

© 2020, The Author(s). Chronic mTORc1 hyperactivation via obesity-induced hyperleucinaemia has been implicated in the development of insulin resistance, yet the direct impact of leucine on insulin-stimulated glucose uptake in muscle cells remains unc... Read More about Leucine and mTORc1 act independently to regulate 2-deoxyglucose uptake in L6 myotubes.

Author Correction: The Beta-adrenergic agonist, Ractopamine, increases skeletal muscle expression of Asparagine Synthetase as part of an integrated stress response gene program (2019)
Journal Article
Brown, D., Ryan, K., Daniel, Z., Mareko, M., Talbot, R., Moreton, J., Giles, T. C., Emes, R., Hodgman, C., Parr, T., & Brameld, J. M. (2019). Author Correction: The Beta-adrenergic agonist, Ractopamine, increases skeletal muscle expression of Asparagine Synthetase as part of an integrated stress response gene program. Scientific Reports, 9(1), Article 15412. https://doi.org/10.1038/s41598-019-43807-1

© 2019, The Author(s). In the Supplementary Information file originally published with this Article, Table 2 was omitted. This error has been corrected in the Supplementary Information that now accompanies the Article.

Changes in expression of serine biosynthesis and integrated stress response genes during myogenic differentiation of C2C12 cells (2019)
Journal Article
Brearley, M. C., Li, C., Daniel, Z. C., Loughna, P. T., Parr, T., & Brameld, J. M. (2019). Changes in expression of serine biosynthesis and integrated stress response genes during myogenic differentiation of C2C12 cells. Biochemistry and Biophysics Reports, 20, Article 100694. https://doi.org/10.1016/j.bbrep.2019.100694

Skeletal muscle is a highly metabolic and dynamic tissue that is formed through the complex and well-organised process of myogenesis. Although there is a good understanding about the role of the Muscle Regulatory Factors during myogenesis, little is... Read More about Changes in expression of serine biosynthesis and integrated stress response genes during myogenic differentiation of C2C12 cells.