Metwally Abdallah E, Abdel-Wareth Ahmed A A, Saleh Ahmed A, Amer Shimaa A
Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig, 44511, Egypt.
Department of Animal and Poultry Production, Faculty of Agriculture, South Valley University, Qena, 83523, Egypt.
BMC Vet Res. 2020 Oct 15;16(1):391. doi: 10.1186/s12917-020-02600-3.
The aim of this study is to investigate whether the energy matrix values of the nonstarch polysaccharide- (NSP-) degrading enzymes, bioemulsifier (LYSOFORTE), guanidinoacetic acid (CreAMINO), or their combinations could be summed. The effects of these additives on the growth performance, carcass traits, and economic value of the broiler chicken diets were evaluated. A total of 525-one-day-old Ross chicks with an initial body weight of 42.96 ± 0.87 g were haphazardly allocated into seven groups with five replicates. The seven experimental treatments are as follows: (1) basal diet with no additives (breeder recommendation), which is the control group, (2) basal diet minus 100 kcal/kg supplemented with 0.02% NSP-degrading enzymes (NSP), (3) basal diet minus 50 kcal/kg supplemented with 0.025% emulsifier (LYSOFORTE), (4) basal diet minus 50 kcal/kg supplemented with 0.06% guanidinoacetic acid (CreAMINO), (5) basal diet minus 150 kcal/kg supplemented with a mixture of NSP and LYSOFORTE (NSPL), (6) basal diet minus 100 kcal/kg supplemented with a mixture of NSP and CreAMINO (NSPC), and (7) basal diet minus 200 kcal/kg supplemented with a mixture of NSP, LYSO, and CreAMINO (NSPLC). The experiment lasted for 35 days.
It was found that the final body weight, body weight gain, and relative growth rate were significantly higher in birds fed diets supplemented with NSPL, NSPC, CreAMINO, and LYSO with the reduced energy matrix value. The overall feed conversion ratio was significantly improved due to the supplementation of NSPC, CreAMINO, NSPL, and LYSO with the reduced energy matrix value compared to the control group. Moreover, no significant effect on the carcass criteria was observed by the different treatments. As a result of the dietary supplementation with NSPL, NSPC, CreAMINO, and LYSO with the reduced energy matrix value, the net profit, total return, economic efficiency, and performance index were increased and the cost of feed per kg of body weight gain was decreased.
The energy matrix value of NSPL, NSPC, CreAMINO, and LYSOFORTE could be established in the diets of broiler chickens to improve the growth performance and economic efficiency.
本研究旨在探究非淀粉多糖（NSP）降解酶、生物乳化剂（LYSOFORTE）、胍基乙酸（CreAMINO）或它们的组合的能量基质值是否可以相加。评估了这些添加剂对肉鸡日粮生长性能、胴体性状和经济价值的影响。将525只初始体重为42.96±0.87克的1日龄罗斯雏鸡随机分为7组，每组5个重复。七个实验处理如下：（1）不添加添加剂的基础日粮（育种者推荐），即对照组；（2）基础日粮减去100千卡/千克并补充0.02% NSP降解酶（NSP）；（3）基础日粮减去50千卡/千克并补充0.025%乳化剂（LYSOFORTE）；（4）基础日粮减去50千卡/千克并补充0.06%胍基乙酸（CreAMINO）；（5）基础日粮减去150千卡/千克并补充NSP和LYSOFORTE的混合物（NSPL）；（6）基础日粮减去100千卡/千克并补充NSP和CreAMINO的混合物（NSPC）；（7）基础日粮减去200千卡/千克并补充NSP、LYSO和CreAMINO的混合物（NSPLC）。实验持续35天。
发现饲喂能量基质值降低的添加NSPL、NSPC、CreAMINO和LYSO日粮的鸡的末体重、体重增加和相对生长率显著更高。与对照组相比，由于添加了能量基质值降低的NSPC、CreAMINO、NSPL和LYSO，总体饲料转化率显著提高。此外，不同处理对胴体标准没有显著影响。由于饲喂能量基质值降低的NSPL、NSPC、CreAMINO和LYSO日粮，净利润、总回报、经济效率和性能指数增加，每千克体重增加的饲料成本降低。
可以在肉鸡日粮中确定NSPL、NSPC、CreAMINO和LYSOFORTE的能量基质值，以提高生长性能和经济效率。
