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\hypersetup{pdftitle={Performance and Feed Cost Benefit of Growing Turkeys Fed Maize"=soybean Meal Diets 	supplemented with Riboflavin (vitamin B2) And/or Protease Enzyme},pdfauthor={John Morakinyo, Oluseyi Oduguwa, Adebayo V. Jegede, Olugbemiga O. Adeleye, Olusesan Fafiolu, Abimbola Oladele Oso},pdfsubject={Tropentag 2016: Abstract},pdfkeywords={Meat type turkeys, protease enzyme, Riboflavin (Vitamin B2)},pdfpagemode=None,colorlinks=true}
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\parbox[b]{13.4cm}{\centering \large{\textbf{Tropentag, September 18-21, 2016, Vienna, Austria}}\\[1ex] \Large{``Solidarity in a competing world ---\\fair use of resources''\\[2ex]}}
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\Large{\textbf{Performance and Feed Cost Benefit of Growing Turkeys Fed Maize"=soybean Meal Diets 	supplemented with Riboflavin (vitamin B2) And/or Protease Enzyme\footnote{\textbf{Contact Address:} John Morakinyo, World Bank Africa Centre of Excellence in Agricultural Development and Sustainable Environment, Federal University of Agriculture, Abeokuta, Nigeria., Livestock Science and Sustainable Environment, Osiele, 110001~Abeokuta, Nigeria, \mbox{e-mail}: \email{jodot4joy@yahoo.com}}\\[0.8ex]}}
\normalsize{\textsc{John Morakinyo$^{1}$, Oluseyi Oduguwa$^{2}$, Adebayo V. Jegede$^{3}$, Olugbemiga O. Adeleye$^{4}$, Olusesan Fafiolu$^{5}$, Abimbola Oladele Oso$^{6}$}}
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\begin{itemize*}
\item[]{\small{\textit{$^{1}$World Bank Africa Centre of Excellence in Agricultural Development and Sustainable Environment, Federal University of Agriculture, Abeokuta, Nigeria., Livestock Science and Sustainable Environment, Nigeria}}}
\item[]{\small{\textit{$^{2}$Federal University of Agriculture, Abeokuta, Dept. of Animal Nutrition, Nigeria}}}
\item[]{\small{\textit{$^{3}$Federal University of Agriculture, Abeokuta, Dept. of Animal Nutrition, Nigeria}}}
\item[]{\small{\textit{$^{4}$Federal University of Agriculture, Abeokuta, Dept. of Animal Production \& Health, Nigeria}}}
\item[]{\small{\textit{$^{5}$Federal University of Agriculture, Abeokuta, Dept. of Animal Nutrition, Nigeria}}}
\item[]{\small{\textit{$^{6}$Federal University of Agriculture, Abeokuta, Dept. of Animal Nutrition, Nigeria}}}
\end{itemize*}
\index[author]{Morakinyo, John}
\index[author]{Oduguwa, Oluseyi}
\index[author]{Jegede, Adebayo V.}
\index[author]{Adeleye, Olugbemiga O.}
\index[author]{Fafiolu, Olusesan}
\index[author]{Oso, Abimbola Oladele}
\begin{center}
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\textbf{Abstract}
\begin{abstract}
\normalsize{
Turkey is a unique specie of poultry characterised by fast growth rate and high feed conversion to meat, moreover, using exogenous enzymes in non"=ruminant diets has provided nutritionists with a very important tool to improve feed digestibility and lower feed cost, thus allowing for more flexibility in diet formulation. Water"=soluble vitamins of the B group act as co"=enzymes and are very important for metabolism. In this study, performance and feed cost benefit were evaluated in growing turkeys fed maize"=soybean meal based diet supplemented with riboflavin (vitamin B2) and/or commercial protease enzyme. 160 turkey poults at 56-days were allotted on weight equalisation basis to 4 dietary treatments in a Completely Randomised Design. Each treatment had 40 poults which were further divided into four replicates of 10 birds each. Diet 1 (control) comprised of the basal diet only. Diet 2,3 and 4 contained basal diet supplemented with riboflavin (\unitfrac[6]{mg}{kg}), protease enzyme (\unitfrac[1000]{mg}{kg}) and both supplements above in that order. Feed and water were supplied ad"=libitum. Data obtained were subjected to analysis of variance in a Completely Randomised Design using SAS (2002). Results showed that, birds fed riboflavin and protease enzyme had lowest ($p < 0.005$) daily feed intake and per kg weight gain. The same group of birds also had better Feed Conversion Ratio (FCR) although the difference were not significant, there was however no significant difference between the poults final live weight, weight gain and mortality percentage at the end of the two phases (84 and 112 days). Although diet with riboflavin and protease enzyme had the highest feed cost per kg but they were the cheapest in terms of feed cost per kg weight gain in the two phases. In conclusion, feeding turkey poults with a maize"=soybean meal based diet supplemented with riboflavin and protease enzyme led to slight improvement in feed conversion ratio and reduction in feed cost per unit weight gain.}

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\noindent \textbf{Keywords:} Meat type turkeys, protease enzyme, Riboflavin (Vitamin B2)
\index[key]{Meat type turkeys}
\index[key]{Protease enzyme}
\index[key]{Riboflavin (Vitamin B2)}
\end{document}
