Study On Nutritinal Value Of Expanded Meat Meal With Broiler Chickens

There are four experiments which explained in this essay: nutritive composition analysis, metabolizing experiment, feeding experiment,slaughtering experiment. The main idea of these experiments were trying to evaluate the expanded meat meal(EMM) from many aspects of nutritive value, which can supply the theory of rational use of it in the feed of broiler chickens .Experiment Ⅰ: Applying the conventional analysis and pure nutritive composition analysis, determined the conventional nutritive composition of EMM, its content of amino acid and protein solubility(PS), made clear its limited amino acid further more. The rate of their conventional components content respectively are: DM 90.60%, CP 65.52%, , EE 5.10%, CA 19.20%, Ca 5.47%, P 0.17%, GE 16.73MJ/kg, PS 3.16%; total amino acid (TAA) content is 41.44%, EAA content is 21.75%. The first limited amino acid in the EMM is Cys. The result show: the EMM may serve as protein feed of broiler chickens, but we must add the limited amino acids ,for example: Cys and Met. Experiment Ⅱ: 12 male Avian(AA) whose average weight is 2.42kg±0.18kg were randomly divided into 2 groups of 3 replicats each to determine the apparent nutrient metabolism rate (ATD) and the apparent metabolism energy(AME) of EMM, adopting traditional digestive rate calculating method. The main results were summarized as follows:The apparent metabolism rate (AMR) of EMM respectively are: CP 49.76%,EE 59.78%,Ca 43.70%,P 26.38％,E 67.17％.AME of EMM is 10.23 MJ/kg.. The AAAMR of Lys,Met,Cys and Thr respectively are: 81.67%, 76.25%, 75.81%, 72.56%.The AAAMRof TAA of EMM (79.57%)is lower than that of fish meal(FM)(85.30%). The AAAMR of Cys was higher than that of FM. The AAAMR of Cys and Thr were higher than that of soybean meal(SBM).The results showed that EMM had the lower nutritional value than FM,but higher than SBM. Experiment Ⅲ: 96 1-day-old male AA were allocated randomly to four treatments of three replicated each. Each treatment was fed one of four experimental diets containing 0,1%,2%,3% EMM. The results showed that the treatment in the higher supplemental proportion of EMM in diet inhibited the performance of broiler chickens.0~28-day-old, feed intake of 1%,2% EMM were lower than CK not significantly(P＞0.05); feed intake of 3% EMM were lower than CK significantly(P＜0.05).29~49-day-old and 0~49-day-old, 1%,2%,3%EMM were lower than CK not significantly(P＞0.05). 0~28-day-old, 29~49-day-old and 0~49-day-old, gains and feed efficiency of 1%,2%,3% EMM were lower than CK not significantly(P＞0.05).The performance of broiler chickens was not significantly influenced by the diet additive 1%, 2% EMM compared with routine corn-soybean meal type basal diet (P＞0.05), but economica profits was increased by reducing feed costs. The result from this study showed that meat meal have good potential for use in broiler chickens.Experiment Ⅳ: This experiment was designed to compare the impact on carcass characteristic of broiler chickens. Two broiler chickens (fifty percent of male) were selected from the each replicates of Experiment Ⅲ (fifty percent of male). Determination of carcass characteristics was made after slaughtering. The results were as follows:The EMM didn't have significant impact on carcass rate, full disposed rate, half disposed rate, breast meat rate, leg meat rate of broiler chicks (P＞0.05).