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  • Title: Effects of a locally produced blood meal on performance, carcass traits and nitrogen retention of broiler chickens.
    Author: Seifdavati J, Navidshad B, Seyedsharifi R, Sobhani A.
    Journal: Pak J Biol Sci; 2008 Jun 15; 11(12):1625-9. PubMed ID: 18819653.
    Abstract:
    The study was designed as a 2 x 5 factorial arrangement with main effects of feeding blood meal as a replacement of 0, 25, 50, 75 or 100% of dietary fish meal and the duration of this substitution at 1-42 or 21-42 days of age. One thousand 1 day old male Cobb 500 broiler chicks assigned randomly to each of 40 floor pens (25 birds/pen) and were fed five isonitrogenous and isocaloric feeds formulated to contain 20.38 and 17% crude protein and 2900 and 3000 kcal kg(-1) metabolizable for starter and grower periods, respectively. Duration of dietary manipulation didn't affect the measured parameters. More than 25% blood meal/fish meal substitution ratios significantly increased chickens daily weight gain and decreased the cost of producing a unit of meat. Other traits didn't affect by dietary fish meal/blood meal replacement ratio. Spleen and proventriculus percents and small intestine length affected by level of replacement but didn't follow a distinct pattern. These results indicate that this locally produced blood meal is a suitable substitute for dietary fish meal and a full replacement didn't cause any adverse effect on performance, carcass important traits and dietary nitrogen retention of broiler chickens.
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