Effect of organic zinc supplementation on yolk zinc content and laying hen performance | เธเธฅเธเธญเธเธเธฒเธฃเนเธชเธฃเธดเธกเนเธฃเนเธเธฒเธเธธเธชเธฑเธเธเธฐเธชเธตเธญเธดเธเธเธฃเธตเธขเนเธเนเธญเธเธฃเธดเธกเธฒเธเนเธฃเนเธเธฒเธเธธเธชเธฑเธเธเธฐเธชเธตเนเธเนเธเนเนเธเธเนเธฅเธฐเธชเธกเธฃเธฃเธเธ เธฒเธเธเธฒเธฃเธเธฅเธดเธเธเธญเธเนเธเนเนเธเน
2008
Atchara Niyomdecha(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) E-mail:[email protected] | Yuwares Ruangpanit(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) | Seksom Attamangkune(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) | Ornprapun Songserm(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science) | Sukanya Rattanatabtimtong(Kasetsart University. Kamphaeng Saen Campus, Nakhon Pathom (Thailand). Faculty of Agriculture. Department of Animal Science)
Objective of this study was to determine the effect of organic zinc supplementation on laying hen performance and yolk zinc content. Three hundred and sixty-Rohmann brown laying hen, approximately 53 weeks of age were divided into 5 dietary treatments. Each treatment consisted of six replications with twelve laying hens per replication. The dietary treatments were control diet (corn soy based diet, T1), control diet supplemented with 40, 80 and 120 ppm organic zinc (T2, T3 and T4) and control diet supplemented with 120 ppm inorganic zinc (T5). All experimental diets were formulated to be isocalorie and isonitrogenous. The results indicated that the supplementation of zinc had no significant effect (P GT 0.05) on laying hen performances (hen day, egg weight, feed, feed/dozen, livability and egg mass), egg quality (haugh unit, yolk color, shell thickness and specific gravity) and yolk zinc content.
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