@article{MAKHILLRJBS20094910990,
    title = {Betaine (Betafin®) Replacement for Methionine in Diet on Growth Performance and Carcass Characteristics of Broiler Chickens},
    journal = {Research Journal of Biological Sciences},
    volume = {4},
    number = {9},
    pages = {1037-1040},
    year = {2009},
    issn = {1815-8846},
    doi = {rjbsci.2009.1037.1040},
    url = {https://makhillpublications.co/view-article.php?issn=1815-8846&doi=rjbsci.2009.1037.1040},
    author = {M.,A.,M.,M.,H. and},
    keywords = {Betfin,methionine,diet,performance,carcass,broiler},
    abstract = {An <I>in vivo</I> experiment was conducted to determine the effect of dietary betaine supplementation as a replacement for methionine on broiler performance and carcass characteristics. Three hundred day old Ross 308 broilers were used in a randomized completely design with 4 treatment and 5 replicates in each treatment and 15 birds/replicates and reared on the floor pens for 42 days. A basal diet was formulated as control according to NRC, recommendations for starter (1-21 days) and grower (22-42 days) periods. In experimental diets, methionine levels were as formulated (control (T<SUB>1</SUB>)) and at 90 (T<SUB>2</SUB>), 80 (T<SUB>3</SUB>) and 70% (T<SUB>4</SUB>) of the control. The incompleted levels of the methionine in T<SUB>2</SUB>, T<SUB>3</SUB> and T<SUB>4</SUB> supplemented by adding Betafin to the diets. The result of present study indicated that feed intake was no affected by treatments (p&gt;0.05). The birds under T<SUB>2</SUB> and T<SUB>4</SUB> had lower body weight gain during 1-42 days as compared with control group. Also, the using of T<SUB>4</SUB> in both of 22-42 and 1-42 days and T<SUB>2</SUB> in 1-42 days significantly resulted to undesirable feed conversion ratio (p&lt;0.05). Supplementation levels of betafin in diets no significantly (p&lt;0.05) affected the amount of carcass and its cuts (p&gt;0.05), except the percent of thigh was significantly higher than control group (p&lt;0.05).}
    }