Ready, steady, chop! Investigating the impact of chop size on zoo food nutritional quality

James Edward Brereton, Chantelle Weaver, Georgia Abernethy Palmer

Abstract


It is common for animal keepers to chop food up for their animals into small pieces, yet there is limited information as to why this practice is done. Anecdotally, many collections also prepare their zoo animal diets the day before feeding and store them in the fridge overnight. The potential impact of these food preparation and storage methods on food nutritional quality is unknown. To address this, this study investigated the impact of preparing six types of produce into four sizes (0.5, 2, and 4 cm3 cubes, or whole) on the desiccation, browning and pH scores. Samples were stored either under ambient, room temperatures, or stored in a fridge and analysis was conducted over a 24-hour period. The most severe desiccation levels occurred in finely chopped feeds, for both ambient and fridge-stored samples. Time significantly affected the rate of desiccation and browning, and food chop size was a significant predictor of both browning and pH. These results suggest that serious nutritional changes occur in chopped feeds, especially when they are finely chopped and especially when food is stored for more than a couple of hours prior to feeding. Practitioners who care for animals should consider whether their animals benefit from finely chopped feeds and should avoid the practice of storing chopped food overnight.

Keywords


Papilloma; African elephant; autohemotherapy; autogenous vaccine

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References


Ali, A., Yeoh, W.K., Forney, C., Siddiqui, M.W., 2018. Advances in postharvest technologies to extend the storage life of minimally processed fruits and vegetables. Critical Reviews in Food Science and Nutrition 58, 2632–2649. https://doi.org/10.1080/10408398.2017.1339180

Arnold, M., Gramza‐Michałowska, A., 2022. Enzymatic browning in apple products and its inhibition treatments: A comprehensive review. Comp Rev Food Sci Food Safe 21, 5038–5076. https://doi.org/10.1111/1541-4337.13059

Bansal, V., Siddiqui, M.W., Rahman, M.S., 2015a. Minimally Processed Foods: Overview, in: Siddiqui, M.W., Rahman, M.S. (Eds.), Minimally Processed Foods: Technologies for Safety, Quality, and Convenience, Food Engineering Series. Springer International Publishing, Cham, pp. 1–15. https://doi.org/10.1007/978-3-319-10677-9_1

Bansal, V., Siddiqui, M.W., Rahman, M.S., 2015b. Minimally Processed Foods: Overview, in: Siddiqui, M.W., Rahman, M.S. (Eds.), Minimally Processed Foods: Technologies for Safety, Quality, and Convenience, Food Engineering Series. Springer International Publishing, Cham, pp. 1–15. https://doi.org/10.1007/978-3-319-10677-9_1

Brackett, R.E., 1994. Microbiological Spoilage and Pathogens in Minimally Processed Refrigerated Fruits and Vegetables, in: Wiley, R.C. (Ed.), Minimally Processed Refrigerated Fruits & Vegetables. Springer US, Boston, MA, pp. 269–312. https://doi.org/10.1007/978-1-4615-2393-2_7

Brereton, S. R., & Brereton, J. E. (2020). Sixty years of collection planning: what species do zoos and aquariums keep?. International Zoo Yearbook, 54(1), 131-145. https://zslpublications.onlinelibrary.wiley.com/doi/abs/10.1111/izy.12264

Brereton, S. R., & Brereton, J. E. (2023). Investigating Market and Conservation Education Influences on Global Zoo and Aquarium Animal Collections. Journal of Research in Social Science and Humanities, 2(1), 25-34. https://www.pioneerpublisher.com/jrssh/article/view/117

Brereton, J.E., 2020. Challenges and Directions in Zoo and Aquarium Food Presentation Research: A Review. Journal of Zoological and Botanical Gardens 1, 13–23. https://doi.org/10.3390/jzbg1010002

Castillejo, N., Martínez-Hernández, G.B., Monaco, K., Gómez, P.A., Aguayo, E., Artés, F., Artés-Hernández, F., 2017. Preservation of bioactive compounds of a green vegetable smoothie using short time–high temperature mild thermal treatment. Food sci. technol. int. 23, 46–60. https://doi.org/10.1177/1082013216656240

Cocci, E., Rocculi, P., Romani, S., Dalla Rosa, M., 2006. Changes in nutritional properties of minimally processed apples during storage. Postharvest Biology and Technology 39, 265–271. https://doi.org/10.1016/j.postharvbio.2005.12.001

Crissey, S., 2005. The complexity of formulating diets for zoo animals: a matrix. International Zoo Yearbook 39, 36–43. https://doi.org/10.1111/j.1748-1090.2005.tb00003.x

Das, A., 2018. Current trends in feeding and nutrition of zoo animals: A review. Ind. Jour. of Anim. Nutr. 35, 242. https://doi.org/10.5958/2231-6744.2018.00038.5

Gramlich, G., Zhang, J., Nau, W.M., 2002. Increased Antioxidant Reactivity of Vitamin C at Low pH in Model Membranes. J. Am. Chem. Soc. 124, 11252–11253. https://doi.org/10.1021/ja026927b

Griffin, B., Brereton, J.E., 2021. Should Zoo Food Be Chopped for Captive Turacos? Birds 2, 415–426. https://doi.org/10.3390/birds2040031

Heaton, J.C., Jones, K., 2008. Microbial contamination of fruit and vegetables and the behaviour of enteropathogens in the phyllosphere: a review. J Appl Microbiol 104, 613–626. https://doi.org/10.1111/j.1365-2672.2007.03587.x

Hodges, D.M., Toivonen, P.M.A., 2008. Quality of fresh-cut fruits and vegetables as affected by exposure to abiotic stress. Postharvest Biology and Technology 48, 155–162. https://doi.org/10.1016/j.postharvbio.2007.10.016

James, C., Nicholls, A., Freeman, M., Hunt, K., Brereton, J.E., 2021. Should zoo foods be chopped: macaws for consideration. Journal of Zoo and Aquarium Research 9, 200–207. https://doi.org/10.19227/jzar.v9i4.507

Lin, D., Zhao, Y., 2007. Innovations in the Development and Application of Edible Coatings for Fresh and Minimally Processed Fruits and Vegetables. Comp Rev Food Sci Food Safe 6, 60–75. https://doi.org/10.1111/j.1541-4337.2007.00018.x

Lunadei, L., Galleguillos, P., Diezma, B., Lleó, L., Ruiz-Garcia, L., 2011. A multispectral vision system to evaluate enzymatic browning in fresh-cut apple slices. Postharvest Biology and Technology 60, 225–234. https://doi.org/10.1016/j.postharvbio.2011.02.001

Mason, G.J., 2010. Species differences in responses to captivity: stress, welfare and the comparative method. Trends in Ecology & Evolution 25, 713–721. https://doi.org/10.1016/j.tree.2010.08.011

Melfi, V.A., 2009. There are big gaps in our knowledge, and thus approach, to zoo animal welfare: a case for evidence-based zoo animal management. Zoo Biol. 28, 574–588. https://doi.org/10.1002/zoo.20288

Perera, C.O., 2020. Minimal Processing of Fruit and Vegetables, in: Handbook of Food Preservation. CRC Press.

Picouet, P.A., Hurtado, A., Jofré, A., Bañon, S., Ros, J.-M., Guàrdia, M.D., 2016. Effects of Thermal and High-pressure Treatments on the Microbiological, Nutritional and Sensory Quality of a Multi-fruit Smoothie. Food Bioprocess Technol 9, 1219–1232. https://doi.org/10.1007/s11947-016-1705-2

Pyo, Y.-H., Jin, Y.-J., Hwang, J.-Y., 2014. Comparison of the Effects of Blending and Juicing on the Phytochemicals Contents and Antioxidant Capacity of Typical Korean Kernel Fruit Juices. JFN 19, 108–114. https://doi.org/10.3746/pnf.2014.19.2.108

Quintanilla, B., Diana, A., Salas, M., 2023. Enhancing welfare in a mixed exhibit: The impact of dispersed whole food on activity levels and feeding behaviours of Mexican military macaws and red-billed curassows. Journal of Zoo and Aquarium Research 11, 366–375. https://doi.org/10.19227/jzar.v11i4.771

Redmond, E.C., Griffith, C.J., Slader, J., Humphrey, T.J., 2004. Microbiological and observational analysis of cross contamination risks during domestic food preparation. British Food Journal 106, 581–597. https://doi.org/10.1108/00070700410553585

Rolle, R.S., Chism, G.W., 1987. Physiological consequences of minimally processed fruits and vegetables. Journal of Food Quality 10, 157–177. https://doi.org/10.1111/j.1745-4557.1987.tb00856.x

Sandri, C., Regaiolli, B., Vespiniani, A., Spiezio, C., 2017. New food provision strategy for a colony of Barbary macaques (Macaca sylvanus): effects on social hierarchy? Integr Food Nutr Metab 4. https://doi.org/10.15761/IFNM.1000181

Sasaki, F.F., Aguila, J.S. del, Gallo, C.R., Ortega, E.M.M., Jacomino, A.P., Kluge, R.A., 2006. Physiological, qualitative and microbiological changes in minimally processed squash submitted to different cut types. Hortic. Bras. 24, 170–174. https://doi.org/10.1590/S0102-05362006000200009

Shora, J., Myhill, M., Brereton, J.E., 2018. Should zoo foods be coati chopped. Journal of Zoo and Aquarium Research 6, 22–25. https://doi.org/10.19227/jzar.v6i1.309

Smith, A., Lindburg, D.G., Vehrencamp, S., 1989. Effect of food preparation on feeding behavior of lion-tailed macaques. Zoo Biol. 8, 57–65. https://doi.org/10.1002/zoo.1430080108

Sommano, S.R., Chanasut, U., Kumpoun, W., 2020. 3 - Enzymatic browning and its amelioration in fresh-cut tropical fruits, in: Siddiqui, M.W. (Ed.), Fresh-Cut Fruits and Vegetables. Academic Press, pp. 51–76. https://doi.org/10.1016/B978-0-12-816184-5.00003-3

Snow, J., (2008). Husbandry Guidelines for Tawny Frogmouth. Accessed at http://nswfmpa. org/Husbandry% 20Manuals/Published% 20Manuals/Aves/Tawny, 2.

Varoquaux, P., Wiley, R.C., 2017. Biological and Biochemical Changes in Minimally Processed Refrigerated Fruits and Vegetables, in: Yildiz, F., Wiley, R.C. (Eds.), Minimally Processed Refrigerated Fruits and Vegetables, Food Engineering Series. Springer US, Boston, MA, pp. 153–186. https://doi.org/10.1007/978-1-4939-7018-6_5

Waasdorp, S., Tuffnell, J.A., Sonsbeek, L.B., Schilp, C.M., van Zeeland, Y.R.A., Sterck, E.H.M., 2021. Chopped and dispersed food enhances foraging and reduces stress-related behaviours in captive white-naped mangabeys (Cercocebus lunulatus). Applied Animal Behaviour Science 241, 105392. https://doi.org/10.1016/j.applanim.2021.105392

Whishaw, I.Q., Tomie, J.-A., 1989. Food-pellet size modifies the hoarding behavior of foraging rats. Psychobiology 17, 93–101. https://doi.org/10.3758/BF03337821

Wiley, R.C., 1994. Preservation Methods for Minimally Processed Refrigerated Fruits and Vegetables, in: Wiley, R.C. (Ed.), Minimally Processed Refrigerated Fruits & Vegetables. Springer US, Boston, MA, pp. 66–134. https://doi.org/10.1007/978-1-4615-2393-2_3




DOI: https://doi.org/10.33687/zoobiol.007.01.4934

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