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The Effects of Dietary Supplementation of L-carnitine and Humic Substances on Performance, Egg Traits and Blood Parameters in Laying Hens
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The Effects of Dietary Supplementation of L-carnitine and Humic Substances on Performance, Egg Traits and Blood Parameters in Laying Hens
Yalcin, Sakine; Ergun, Ahmet; Ozsoy, Bulent; Yalcin, Suzan; Erol, Handan; Onbasilar, Ilyas;
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This experiment was carried out to determine the effects of supplementation of L-carnitine and humic substances alone or in combination in laying hen diets on performance, egg traits and blood parameters. A total of 180 IGH type brown laying hens aged 22 weeks were employed in a completely randomized block design with one control group and three treatment groups. Each group was divided into five replicates as subgroups, each comprising 9 hens. The diets of the first, second and third treatment groups were supplemented with 0.1 g/kg L-carnitine, 1.5 g/kg humic substances (Farmagulator Dry Plus) and 0.1 g/kg L-carnitine+1.5 g/kg humic substances, respectively. The experimental period lasted 18 weeks. Feeding supplemental carnitine, humic substances or carnitine+humic substances resulted in increases in body weight gain (p<0.05). Dietary treatments did not significantly affect daily feed intake, daily metabolizable energy intake, egg production, egg weight, feed efficiency, mortality, egg shape index, egg breaking strength, egg shell thickness, egg albumen index, egg yolk index, egg Haugh unit and the percentages of egg shell, albumen and yolk. Supplementation of humic substances reduced egg yolk cholesterol as mg per g yolk and mg per yolk (p<0.05). Blood serum parameters were not affected by the supplementation of carnitine, humic substances or carnitine+humic substances. The results in this study demonstrated that humic substances supplementation reduced egg cholesterol without adverse effects on performance, egg traits and blood parameters of laying hens. It was concluded that the usage of L-carnitine alone or in combination with humic substances in diets had no beneficial effects in laying hens.
L-carnitine;Humic Substances;Laying Hen;Performance;Egg Traits;Blood Parameters;
 Cited by
AOAC. 1990. Official Methods of Analysis. 14th edn. Association of Official Analytical Chemists. Arlington, Virginia

Baumgartner, M. and R. Blum. 1997. Typical L-carnitine contents in feedstuffs. Lonza ltd. Technical Report. August 1997. Basel, Switzerland

Bayram, I., Z. Akinci and H. Uysal. 1999. The effects of Lcarnitine and vitamin C supplementation to quail rations on performance and egg production. J. Fac. Vet. Med. Univ. Yuzuncu Yil 10:32-37. Turkish with english summary

Bremer, J. 1983. Carnitine: metabolism and functions. Physiol. Rev. 63:1420-1480

Buyse, J., G. P. J. Janssens and E. Decuypere. 2001. The effects of dietary L-carnitine supplementation on the performance, organ weights and circulating hormone and metabolite concentrations of broiler chickens reared under a normal or low temperature schedule. Br. Poult. Sci. 42:230-241 crossref(new window)

Card, L. E. and M. C. Nesheim. 1972. Poultry Production. 11th edn. Lea and Febiger, Philadelphia

Celik, L. and O. Ozturkcan. 2003. Effects of dietary supplemental L-carnitine and ascorbic acid on performance, carcass composition and plasma L-carnitine concentration of broiler chicks reared under different temperature. Arch. Anim. Nutr. 57:27-38 crossref(new window)

Celik, L., A. Tekeli and O. Pzturkcan. 2004. The effects of supplemental L-carnitine in drinking water on performance and egg quality of laying hens exposed to a high ambient temperature. J. Anim. Physiol. Anim. Nutr. 88:229-233 crossref(new window)

Daskıran, M. and R. G. Teeter. 2001. Effects of dietary L-carnitine (carniking$^{\circledR}$) supplementation on overall performance and carcass characteristics of seven-week-old broiler chickens. Animal Science Research Report. research/2001rr/35/35.htm

Dawson, B. and R. G. Trapp. 2001. Basic and Clinical Biostatistics. 3rd edn. Lange Medical Books/McGraw-Hill Medical Publishing Division, New York

Eder, K. 2000. L-carnitine supplementation and the lipid metabolism of rats fed a hyperlipidaemic diet. J. Anim. Physiol. Anim. Nutr. 83:132-140 crossref(new window)

Eren, M., G. Deniz, S. S. Gezen and I. I. Turkmen. 2000. Effects of humates supplemented to the broiler feeds on fattening performance, serum mineral concentration and bone ash. Vet. J. Ankara Univ. 47:255-263. Turkish with english summary

Hayirli, A., N. Esenbuga, M. Macit, E. Lacin, M. Karaoglu, H. Karaca and L. Yildiz. 2005. Nutrition practice to alleviate the adverse effects of stress on laying performance, metabolic profile, and egg quality in peak producing hens: I. The humate supplementation. Asian-Aust. J. Anim. Sci. 18:1310-1319

Islam, K. M. S., A. Schuhmacher and J. M. Gropp. 2005. Humic acid substances in animal agriculture. Pakistan J. Nutr. 4:126- 134 crossref(new window)

Kita, K., S. Kato, M. Aman Yaman, J. Okumura and H. Yokota. 2002. Dietary L-carnitine increases plasma insulin-like growth factor-I concentration in chicks fed a diet with adequate dietary protein level. Br. Poult. Sci. 43:117-121 crossref(new window)

Kita, K., S. Nakajima and J. Nakagawa. 2005. Dietary L-carnitine supplementation improves albumen quality of laying hens. J. Poult. Sci. 42:79-83 crossref(new window)

Kucukersan, S., K. Kucukersan, I. Colpan, E. Goncuoglu, Z. Reisli and D. Yesilbag. 2005. The effects of humic acid on egg production and egg traits of laying hen. Vet. Med.-Czech. 50:406-410

Leeson, S. and J. D. Summers. 2001. Nutrition of the Chicken. University Books, Guelph, Canada

Leibetseder, J. 1995. Untersuchungen uber die Wirkung von Lcarnitin beim Huhn. Arch. Anim. Nutr. 48:97-108 crossref(new window)

Lettner, V. F., W. Zollitsch and E. Halbmayer. 1992. Use of Lcarnitine in the broiler ration. Bodenkultur 43:161-167

Lien, T-F. and Y-M. Horng. 2001. The effect of supplementary dietary L-carnitine on the growth performance, serum components, carcase traits and enzyme activities in relation to fatty acid $\beta$-oxidation of broiler chickens. Br. Poult. Sci. 42:92-95 crossref(new window)

Ozcelik, H. and S. Yalcin. 2004. The usage of L-carnitine and sodium humate in broiler rations. Vet. J. Ankara Univ. 51:63- 69. Turkish with english summary

Parks, C., P. R. Ferket, L. N. Thomas and J. L. Grimes. 1986. Growth performance and immunity of turkeys fed high and low crude protein diets supplemented with Menefee humate. Poult. Sci. 75:138-143

Pettit, R. E. 2004. Organic matter, humus, humate, humic acid, fulvic acid and humin: their importance in soil fertility and plant health. Humate Info. Humate Research and Information.

Rabie, M. H., M. Szilagyi and T. Gippert. 1997. Effects of dietary L-carnitine on the performance and egg quality of laying hens from 65-73 weeks of age. Br. J. Nutr. 78:615-623 crossref(new window)

Rabie, M. H. and M. Szilagyi. 1998. Effects of L-carnitine supplementation of diets differing in energy levels on performance, abdominal fat content and yield and composition of edible meat of broilers. Br. J. Nutr. 80:391-400 crossref(new window)

Stepchenko, L. M., L. V. Zhorina and L.V. Kravtsova. 1991. The effect of sodium humate on metabolism and resistance in highly productive poultry. Biol. Nauki. 10:90-95

Tancho, A. 1999. The effect of humic acid supplement on egg performance and egg quality of laying hen during 28-47 weeks of age. 30th Anniversary Kaset Ladkrabang, 24-26 June 1999.

Weeden, T. L., J. L. Nelssen, J. A. Hansen, G. E. Fitzner and R. D. Goodband. 1991.The effect of L-carnitine on starter pig performance and carcass composition. J. Anim. Sci. 69(Suppl.) 105(Abstr.)

Xu, Z. R., M. Q. Wang, H. X. Mao, X. A. Zhan and C. H. Hu. 2003. Effects of L-carnitine on growth performance, carcass composition, and metabolism of lipids in male broilers. Poult. Sci. 82:408-413

Yalcin, S., A. Sehu, E. E. Onbasilar and T. Sahin. 2003. The effects of dietary humate and probiotic supplementation on performance of broiler. Vet. J. Ankara Univ. 50:239-244. Turkish with english summary

Yalcin, S., A. Ergun, H. Erol, S. Yalcin and B. Ozsoy. 2005. Use of L-carnitine and humate in laying quail diets. Acta Vet. Hung. 53:361-370 crossref(new window)

Yoruk, M. A., M. Gul, A. Hayırlı and M. Macit. 2004. The effects of supplementation of humate and probiotic on egg production and quality parameters during the late laying period in hens. Poult. Sci. 83:84-88