Heavy Metals in Pig Livers; A Case of Munyaka Estate-Uasin-Gishu County, Kenya
Keywords:
Heavy metals,, Munyaka,, Lead,, Mercury,, CadmiumAbstract
have lead to alteration of their natural geochemical and biochemical cycle and balance. The risk of heavy metal contamination in meat/pork is of public health concern for both food safety and human health. The study aimed at determining the levels of lead, cadmium and mercury in pigs reared in two husbandry systems in Uasin-Gishu County, Kenya. A comparative cross-sectional study was employed. Thirty two pigs representing close to a thousand pigs in Munyaka estate were studied under two husbandry systems. Four branded manufactured feeds and 6 forage plants were analyzed by AAS machine for lead, cadmium and mercury. Results were summarized using means. The mean levels of lead, cadmium and mercury among intensively produced pigs were 0.10±0.04, 0.13±0.04 and 0.12±0.04mg/kg.wet weight respectively. The mean levels of lead, cadmiu and mercury in extensively produced pigs were 0.09±0.03, 0.18±0.05 and 0.14±0.09mg/kg.wet weight respectively. There was a significant difference (p<0.05) in cadmium levels in pigs under intensive and extensive husbandry system with extensively produced pigs having higher levels. Manufactured feed B had mean Pb levels of 0.26±0.01mg/kg.dry weight while feed D had Pb levels of 0.38±0.02mg/kg.dry weight. Cabbage leaves had mean Pb levels of 0.60±0.26 mg/kg.dry weight whereas grass on the roadside had mean Hg levels of 0.03±0.02mg/kg.dry weight with banana peelings also having mean Hg levels of 0.03±0.04mg/kg.dry weight. There was a significant difference (p<0.05) in cadmium levels in pigs under intensive and extensive husbandry systems with extensively produced pigs having higher levels. The study showed that pig livers under the study were not safe for human consumption due to the presence of mercury levels above the WHO maximum recommended levels. These metals are known to cause adverse health effects including neurological and renal disturbances neurological and renal disturbances. The Government shoul strictly enforce The Animal Diseases Act; Cap364 on prohibition of extensive husbandry system. Kenya bureau of standards (KEBS) and Department of Veterinary Services (DVS) should regularly monitor and evaluate pork to safeguard human health. Farmers should be educated on the need to discriminately use of Phosphatic fertilizers and pesticides as they contribute to HMs in the soil and the consequent uptake by plants.
References
Amfo-Otu, R., Agyenim, J. B., & Adzraku, S. (2014). Meat Contamination Through Singeing With Scrap Tyres in Akropong-Akuapem Abattoir, Ghana. Applied Research Journal, 1(1), 12–19. https://doi.org/10.1111/j.1467-8330.1974.tb00606.x
Amlund, H., Berntssen, M. H. G., Lunestad, B. T., & Lundebye, A. K. (2012). Aquaculture feed contamination by persistent organic pollutants, heavy metals, additives and drug residues. In Animal Feed Contamination: Effects on Livestock and Food Safety (pp. 205–229). https://doi.org/10.1533/9780857093615.2.205
Amodio-Cocchieri, R., Amoroso, S., Arnese, A., Cirillo, T., Montuori, P., & Triassi, M. (2003). Pollution by mercury, arsenic, lead, chromium, cadmium, and polycyclic aromatic hydrocarbons of fish and mussels from the gulf of Naples, Italy. Bulletin of Environmental Contamination and Toxicology, 71(3), 551–560. https://doi.org/10.1007/s00128-003-8829-6
Buculei, A., Amariei, S., Oroian, M., Gutt, G., Gaceu, L., & Birca, A. (2014). Metals migration between product and metallic package in canned meat. LWT - Food Science and Technology, 58(2), 364–374. https://doi.org/10.1016/j.lwt.2013.06.003
Carolyn, P., & Aqilah, F. A. T. (2014). Assessment of heavy metals accumulation in paddy rice (Oryza sativa). African Journal of Agricultural Research, 9(41), 3082–3090. https://doi.org/10.5897/AJAR2014.8760
Castro-González, M. I., & Méndez-Armenta, M. (2008). Heavy metals: Implications associated to fish consumption. Environmental Toxicology and Pharmacology. https://doi.org/10.1016/j.etap.2008.06.001
Chowdhury, S., Mazumder, M. A. J., Al-Attas, O., & Husain, T. (2016). Heavy metals in drinking water: Occurrences, implications, and future needs in developing countries. Science of the Total Environment, 569–570, 476–488. https://doi.org/10.1016/j.scitotenv.2016.06.166
Dixit, R., Wasiullah, Malaviya, D., Pandiyan, K., Singh, U. B., Sahu, A., … Paul, D. (2015). Bioremediation of heavy metals from soil and aquatic environment: An overview of principles and criteria of fundamental processes. Sustainability (Switzerland). https://doi.org/10.3390/su7022189
Eneji, I. S., Sha’Ato, R., & Annune, P. A. (2011). Bioaccumulation of Heavy Metals in Fish (Tilapia Zilli and Clarias Gariepinus) Organs From River Benue, North--Central Nigeria. Pakistan Journal of Analytical and Environmental Chemistry, 12(1), 25–31. Retrieved from http://search.ebscohost.com/login.aspx?direct=true&profile=ehost&scope=site&authtype=crawler&jrnl=1996918X&AN=70237705&h=CaBVamVjng9JvsIgmxZaVRVvimOSzgtOfNGF0+x0+Jpr+/+Gj6ufkhX3gbsY9ig9Yr/Ciwm36LJypeuEvh+Z9A==&crl=c
Eskandari, M. H., & Pakfetrat, S. (2014). Aflatoxins and heavy metals in animal feed in Iran. Food Additives and Contaminants: Part B Surveillance, 7(3), 202–207. https://doi.org/10.1080/19393210.2013.876675
Gimeno-García, E., Andreu, V., & Boluda, R. (1996). Heavy metals incidence in the application of inorganic fertilizers and pesticides to rice farming soils. Environmental Pollution, 92(1), 19–25. https://doi.org/10.1016/0269-7491(95)00090-9
Govind, P. (2014). Heavy Metals Causing Toxicity in Animals and Fishes. Research Journal of Animal Res. J. Animal, Veterinary and Fishery Sci. International Science Congress Association, 2(2), 17–23.
Gupta, M. L., Carvalho, P., Roof, D. M., & Pellman, D. (2006). Plus end-specific depolymerase activity of Kip3, a kinesin-8 protein, explains its role in positioning the yeast mitotic spindle. Nature Cell Biology, 8(9), 913–923. https://doi.org/10.1038/ncb1457
Gutleb, A. C. (1994). Heavy Metals , OCPs and PCBs in spraints of the otter from Slovenia. IUCN Otter Spec. Group Bull., 10, 31–33.
Jaishankar, M., Tseten, T., Anbalagan, N., Mathew, B. B., & Beeregowda, K. N. (2014). Toxicity, mechanism and health effects of some heavy metals. Interdisciplinary Toxicology. https://doi.org/10.2478/intox-2014-0009
Jakimska, A., Konieczka, P., Skóra, K., & Namieśnik, J. (2011). Bioaccumulation of metals in tissues of marine animals, part II: Metal concentrations in animal tissues. Polish Journal of Environmental Studies, 20(5), 1127–1146.
Kan, C. A., & Meijer, G. A. L. (2007). The risk of contamination of food with toxic substances present in animal feed. Animal Feed Science and Technology, 133(1–2), 84–108. https://doi.org/10.1016/j.anifeedsci.2006.08.005
Kazemeini, H., Rahimi, E., Kharrattaherdel, A., Nozarpour, N., & Ebadi, A. (2010). Cadmium concentration in muscle, liver and kidney of sheep slaughtered in Falavarjan abattoir, Iran. Toxicology and Industrial Health, 26(5), 259–263. https://doi.org/10.1177/0748233710364963
Kenya National Bureau of Statistics (KNBS); ORC Macro. (2010). Kenya Demographic and Health Survey 2008-09. Health (San Francisco), 1–314. https://doi.org/10.3109/03014460.2013.775344
Kerin, E. J., & Lin, H. K. (2010). Fugitive dust and human exposure to heavy metals around the Red Dog Mine. Reviews of Environmental Contamination and Toxicology, 206, 49–63. https://doi.org/10.1007/978-1-4419-6260-7_3
LennTech. (2017). Heavy Metals - Lenntech. Retrieved from https://www.lenntech.com/processes/heavy/heavy-metals/heavy-metals.htm
Luilo, G. B., & Othman, O. C. (2003). Heavy metal levels of pasture grasses in metropolitan area. Journal de Physique IV, 107, 797. Retrieved from http://www.edpsciences.org/articles/jp4/abs/2003/05/jp4pr5p0797/jp4pr5p0797.html
Nagajyoti, P. C., Lee, K. D., & Sreekanth, T. V. M. (2010). Heavy metals, occurrence and toxicity for plants: A review. Environmental Chemistry Letters. https://doi.org/10.1007/s10311-010-0297-8
Sheppard, M. I. (1993). Heavy Metals in the Environment. Journal of Environment Quality, 22(1), 213. https://doi.org/10.2134/jeq1993.00472425002200010029x
Sherene, T. (2010). Mobility and transport of heavy metals in polluted soil environment. Biological Forum, 2(2), 112–121.
Singh, R., Gautam, N., Mishra, A., & Gupta, R. (2011). Heavy metals and living systems: An overview. Indian Journal of Pharmacology, 43(3), 246. https://doi.org/10.4103/0253-7613.81505
Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K., & Sutton, D. J. (2012). Heavy Metals Toxicity and the Environment. In Molecular, Clinical and Environmental Toxicology, 133–164. https://doi.org/10.1007/978-3-7643-8340-4_6
US EPA. (2012). US Environmental Protection Agency. US Environmental Protection Agency, 1, 1–15.
Vanhaverbeke, W., Van De Vrande, V., & Chesbrough, H. W. (2008). CIM Vanhaverbeke et al 2008. Creativity and Innovation Management, 17(4), 251–258. https://doi.org/10.1111/j.1467-8691.2008.00499.x
Velusamy, A., Satheesh Kumar, P., Ram, A., & Chinnadurai, S. (2014). Bioaccumulation of heavy metals in commercially important marine fishes from Mumbai Harbor, India. Marine Pollution Bulletin, 81(1), 218–224. https://doi.org/10.1016/j.marpolbul.2014.01.049
Wasana, H. M. S., Perera, G. D. R. K., Gunawardena, P. D. S., Fernando, P. S., & Bandara, J. (2017). WHO water quality standards Vs Synergic effect(s) of fluoride, heavy metals and hardness in drinking water on kidney tissues. Scientific Reports, 7. https://doi.org/10.1038/srep42516
Weiss, B., & Larink, O. (1991). Influence of sewage sludge and heavy metals on nematodes in an arable soil. Biology and Fertility of Soils, 12(1), 5–9. https://doi.org/10.1007/BF00369381
Williams, N. S., Giordano, P., Dvorkin, L. S., Huang, a, Hetzer, F. H., & Scott, S. M. (2005). Williams et al 2005.pdf. Diseases of the Colon and Rectum, 48(2), 307–316. https://doi.org/10.1111/j.1752-1688.1995.tb03412.x
Xiong, Z. T. (1998). Lead uptake and effects on seed germination and plant growth in a Pb hyperaccumulator Brassica pekinensis Rupr. Bulletin of Environmental Contamination and Toxicology, 60(2), 285–291. https://doi.org/10.1007/s001289900623
Zeitoun, M. M., Sayed, E.-, & Mehana, E. (2014). Impact of Water Pollution with Heavy Metals on Fish Health: Overview and Updates. Global Veterinaria, 12(2), 219–231. https://doi.org/10.5829/idosi.gv.2014.12.02.82219
