Dott.ssa Elena Diaz Vicuna
- 502306
- Phd: 38th cycle
- Dottorato in Scienze Veterinarie per la Salute Animale e la Sicurezza Alimentare
- Matriculation number: 847868
- ORCID: orcid.org/0000-0002-0197-518X
Phd thesis
Title: Beef-Haze - Hazelnut Industrial By-Product Inclusion in Piedmontese beef cattle livestock system
Scientific background
The circular economy principles are currently gaining a growing interest due to the increasing relevance of global challenges (overpopulation, world hunger, climate change, international conflicts).[1] Among the various solutions presented in literature (upcycled food production, material recovery, etc), one recognized as most effective is the re-use of co-/by-products from the food chain supply as feed [2]; in this context, the idea of using the hazelnut skins in livestock is yet to be fully explored.
Hazelnut skins (HS) are an agro-industrial co-products resulting from hazelnut roasting that lack any type of value and are classified as waste. [3] Their re-evaluation, on which the project is based, might present economic interests due to the related industry’s relevance. The latest global data report a production of grossly 1.1 million tons in 2020, with Italy as second main producer, being responsible for around 15% of the whole total production [4] and homeland to one of the main confectionery plants: Ferrero Spa, accounted for the use of one quarter of the yearly global production.
In literature, the HS’ nutritional profile is mainly defined by high values of fiber and total lipids (in particular unsaturated fatty acids) and a peculiar richness in bioactive principles, such as phenolic compounds and tocopherols, known for their antioxidant properties. Natural antioxidants are proved to be effective in beef production on various levels (animal welfare and overall product quality).
Promising results have been recorded in preliminary trials evaluating the effects of HS inclusion in dairy cows’ [5] and sheep’s diets [6-7]; no data are yet available on beef cattle, nor on Piedmontese cattle. The project is therefore aimed at promoting the use of hazelnut skin in beef cattle production, in line with a circular economy philosophy.
Aims and innovative aspects
Specific objectives:
- Decrease the hazelnut industry’s environmental impact;
- Improve the animals’ welfare and the derived product’s shelf life, due to the skins’ nutraceutical and antioxidant properties;
- Involve the consumers in a sensory evaluation while contributing to increase their perception on the issues of sustainability and circular economy.
Main techniques
The innovation of the study will be guaranteed by:
- the preliminary characterization of the HS;
- the inclusion of HS in Piedmontese beef cattle nutrition, a current knowledge gap;
- the use of an overall multidisciplinary approach;
- the active involvement of consumers as expression of citizen science.
- Project phases:
- Preliminary analysis on HS aimed at determining the nutritional profile and to identificate the main bioactive elements
Chemical composition will be mostly determined following AOAC procedures and (for the neutral detergent fiber) Van Soest et al.’s guidelines. [7] The energetic value will be estimated using National Research Council (NRC) equations. Fatty acid composition [8], phenolic content, antioxidants and antimicrobial properties [9] will also be determined.
- In vivo trial
Weaned calves will be divided in two groups and receive two different feeds: a conventional concentrate (control) and a mixture of the same concentrate and HS (treated). Calves will be followed from weaning to the end of the productive cycle (800kg ± 13 months), during which live performances such as body weight, body weight gain and feed conversion efficiency will be recorded; at slaughter, rumen fluid will be collected for microbiota analyses. After 24h of refrigerated storage, the longissimus dorsi muscle will also be sampled for the meat analyses.
- Meat analyses
It is planned to define physical, chemical, and nutritional traits, with a focus on the antioxidant capacity aimed at exploring the efficacy of HS.
Finally, microbiological exams will also be conducted in relation to the shelf life.
- Sensorial properties and consumer science
The panel test reference will be ISO 13299:2003. Online and face-to-face surveys will be conducted to explore consumer acceptability of the product and emotional aspects related to the environmental and social sustainability of the inclusion of HS in beef cattle feed.
Expected results
It is expected that the final results will create knowledge that will improve the animals’, humans’ and environment’s overall welfare. Firstly, providing feed characterized by a high content of antioxidants will determine healthier animals, less subjected to technopathies and infectious diseases and thus allowing for a reduction in the antibiotics (and, in general, medicines) usage, helping to generate a safer product for human consumption. Finally, re-evaluating an item whose destiny has been manure waste up until now will lead to a much more sustainable supply chain, thus meaning another step forward a circular economy structure and an overall healthier future.
BIBLIOGRAPHY
[1] Sadhukhan J. et al., Perspectives on “Game Changer” Global Challenges for Sustainable 21st Century: Plant-Based Diet, Unavoidable Food Waste Biorefining, and Circular Economy. Sustainability 2020, 12, 1976
[2] Pinotti L. et al., Recycling food leftovers in feed as opportunity to increase the sustainability of livestock production. Journal of Cleaner Production, Volume 294, 2021, 126290
[3]Campione A. et al., Effect of Feeding Hazelnut Skin on Animal Performance, Milk Quality, and Rumen Fatty Acids in Lactating Ewes. Animals (Basel), 2020 Mar 31; 10(4):588.
[4]Squara S. et al., Corylus avellana L. Aroma Blueprint: Potent Odorants Signatures in the Volatilome of High Quality Hazelnuts. Front Plant Sci. 2022 Mar 3;13:840028.
Research activities
Co-supervisors: Laura Ozella, Andrea Giorgino
Publications:
1. L. Ferroni, E. Albini, C. Lovito, F. Blasi, C. Maresca, F.R. Massacci, S. Orsini, S. Tofani, G. Pezzotti, E. Diaz Vicuna, C. Forte, C.F. Magistrali. Antibiotic consumption is a major driver of antibiotic resistance in calves raised on Italian cow-calf beef farms, Research in Veterinary Science, Volume 145, 2022, Pages 71-81, ISSN 0034-5288, https://doi.org/10.1016/j.rvsc.2022.01.010.
2. L. Ozella, M. Giacobini, E. Diaz Vicuna, A. Schiavone, C. Forte. Comparative Study of Social Behavior in Primiparous and Multiparous Dairy Cows During Automatic Milking (2023), Applied Animal Behaviour Science, https://doi.org/10.1016/j.applanim.2023.106065.
3. Diaz Vicuna E., Srikanthithasan K., Odore R., Massaglia S., Merlino V.M., Giorgino A., Ozella L., Schiavone A., Mota-Gutierrez J., Forte C. Influence of age, gender, and willingness to adopt former foodstuffs on the perception of Italian farm animal veterinarians. Frontiers in Veterinary Sciences., 2024, 11
4. Srikanthithasan K., Giorgino A., Fiorilla E., Ozella L., Gariglio M., Schiavone A., Martínez Marín A.L., Diaz Vicuna E., Forte C. Former foodstuffs in feed: a minireview of recent findings. Environmental Science and Pollution Research., 2024, 31(16).
5. Aytemiz Danyer, I., Diaz Vicuna, E.*, Manfrè, C., Contiero, B., Forte, C., Brscic, M. State of the art of the cow-calf systems in beef and dairy cattle (Bos taurus) operations in EU, USA, and Brazil from 1998 to 2023. Research in Veterinary Science., 2024, 179, 105398.
*corresponding author
Submitted:
1. Srikanthithasan K., Diaz Vicuna E., Gariglio M., Giorgino A., Miniscalco B., Zambotto V., Cappone E.E., Fiorilla E., Nery J., Sala R., Martínez Marín A.L., Madrid Sanchez J., Schiavone A., Forte C. Dietary processed former foodstuff from bakery by-products for broilers: impact on performance, digestibility, and hematobiochemical profiles. Submitted to: Poultry Science on 29/1/2024. State: Under revision.
Oral presentations:
1. E. Diaz Vicuna, L. Anfossi, F. Di Nardo, C. Forte, L. Ozella. CortiCow:development of a rapid and non-invasive Lateral Flow Immunoassay for the evaluation of cortisol levels in bovine saliva. IEEE International Workshop on measurements and applications in Veterinary and Animal sciences (MeAVeAS). Naples (Italy), 26-28th April 2023.
2. E. Diaz Vicuna, N. Adams, L. Smith, C. Forte, A. Hessle. Exploring the sustainability aspects of innovative livestock systems in Europe. 75th Annual Meeting of the European Federation of Animal Science (EAAP). Florence (Italy), 1-4th September 2024.
3. Laura Ozella, Davide Vitturini, Elena Diaz Vicuna, Marco Bovo, Claudio Forte, Mario Giacobini, Marco Grangetto. Analysing the social network dynamics of dairy cows with computer vision. 11th European Conference on Precision Livestock Farming (ECPLF). Bologna (Italy), 9-12 September 2024.
4. Elena Diaz Vicuna, Edoardo Fiorilla, Karthika Srikanthithasan, Valeria Zambotto, Silvia Tabasso, Manuela Renna, Lara Rastello, Andrea Giorgino, Laura Ozella, Valentina Arneodo, Andrea Cravero and Claudio Forte. Hazelnut skin as sustainable feed ingredient in livestock diets: preliminary results. RETASTE: RETHINK FOOD Resources, losses, and waste. Heraklion (Greece), 25-27th September 2024.
Abstracts published on International Congresses’ proceedings:
1. K. Srikanthithasan, A. Giorgino, M. Gariglio, E. Diaz Vicuna, A. Schiavone, E. Fiorilla, M. Profiti, C. Forte (2022). Determination of growth performance and carcass yield of broilers fed different levels of bakery by-products. Game of Research, Department of Veterinary Sciences, University of Turin, Italy. (15th December 2022)
2. K. Srikanthithasan, M. Gariglio, E. Fiorilla, A. Giorgino, L. Dellepiane, E. Diaz Vicuna, D. Sola, V. Bongiorno, S. Bergagna, A. Schiavone, D. Soglia, F. Raspa, C. Forte. Dietary bakery by products can increase performance and sustainability in poultry farming. 25th congress ASPA 2023, Monopoli, Bari, Italy. (13-16 June 2023)
3. K. Srikanthithasan, A. Giorgino, M. Gariglio, E. Diaz Vicuna, A. Schiavone, E. Fiorilla, S. Bergagna, A. C. Barroeta, M. Profiti, C. Forte. Bakery by-products in poultry diet: effects on performance, blood parameters and fatty acid profile of meat. 23rd European Symposium on Poultry Nutrition, Rimini, Italy. (21-24 June 2023).
4. E. Diaz Vicuna, L. Anfossi, F. Di Nardo, C. Forte, L. Ozella. CortiCow:development of a rapid and non-invasive Lateral Flow Immunoassay for the evaluation of cortisol levels in bovine saliva. IEEE International Workshop on measurements and applications in Veterinary and Animal sciences (MeAVeAS). Naples (Italy), 26-28th April 2023.
5. E. Diaz Vicuna, N. Adams, L. Smith, C. Forte, A. Hessle. Exploring the sustainability aspects of innovative livestock systems in Europe. 75th Annual Meeting of the European Federation of Animal Science (EAAP). Florence (Italy), 1-4th September 2024.
6. Laura Ozella, Davide Vitturini, Elena Diaz Vicuna, Marco Bovo, Claudio Forte, Mario Giacobini, Marco Grangetto. Analysing the social network dynamics of dairy cows with computer vision. 11th European Conference on Precision Livestock Farming (ECPLF). Bologna (Italy), 9-12 September 2024.
7. Elena Diaz Vicuna, Edoardo Fiorilla, Karthika Srikanthithasan, Valeria Zambotto, Silvia Tabasso, Manuela Renna, Lara Rastello, Andrea Giorgino, Laura Ozella, Valentina Arneodo, Andrea Cravero and Claudio Forte. Hazelnut skin as sustainable feed ingredient in livestock diets: preliminary results. RETASTE: RETHINK FOOD Resources, losses, and waste. Heraklion (Greece), 25-27th September 2024.
Professional training:
1. Participation and completion of the course "text-mining e topic analysis" held by ANICURA ITALY HOLDING S.R.L., from February to June 2023.
2. Professional training at Dalma Mangimi spa (Cuneo), from 11/9/2023 to 14/12/2023.
3. Participation and completion of the course "ANALISI STATISTICA DI BASE PER LE SCIENZE ZOOTECNICHE" held by Associazione per la Scienza e le Produzioni Animali (ASPA), from 1st-5th of July 2024.
Other professional experiences:
1. Abroad period at the Sverige Lantbruksuniversitet (SLU) from Jan-2024 to June-2024 in the locations of Skara (January to April) and Uppsala (April to June).
2. Internship at the University of Reading (UK), as winner of the "Early carreer immersion programme" offered from the EU Pathways project (https://pathways-project.com/ecip/), from the 26th to the 29th of August 2024.