CN111248346A - 一种酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用 - Google Patents
一种酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用 Download PDFInfo
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Abstract
本发明公开了一种酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用,属于酶工程与生物技术领域。本发明制备的饲料可提供丰富的动物小分子蛋白,容易消化和吸收提高生长速度和促进羽毛的生长,可促进羽毛发育完善,均匀度提高,体成熟和性成熟同步,提早5‑10天产蛋,产蛋产峰期延长1个月。本发明制备的饲料使用微生物抗菌肽及植物提取物等替代抗生素,有助于杀菌抑菌,改善肠道菌群平衡,提高动物免疫机能,降低发病率。
Description
技术领域
本发明涉及一种酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用,属于酶工程与生物技术领域。
背景技术
换羽是禽类的一种自然生理现象,蛋鸡的羽毛从出雏到成年,要经过三次更换。开产前更换为成年羽,产蛋后每年秋冬都要更换一次。养殖过程中,发现青年鸡换羽较慢,羽毛生长出来后无光泽,容易折断,至产蛋后会伴随着开产推迟,产蛋率上长慢,产蛋高峰期维持时间短。此现象除了受饲养管理、疾病的影响因素外,饲料营养不平衡、营养素缺乏也是导致其产生的原因。
羽毛的脱换和重生可直接反应鸡群的营养状况,营养良好的鸡群羽毛脱换快且在性成熟之前羽毛丰满有光泽。若饲料蛋氨酸等含硫氨基酸、维生素和微量元素缺乏,雏鸡羽毛的脱换和生长速度均会受到严重影响,开产前羽毛残缺不全、缺乏光泽,性成熟必然推迟,将来的产蛋性能也不会好。往往养殖户更多的关注产蛋期和育雏期营养,对青年期营养关注不够,或者只关注体重,而不关注胫长、羽毛生长的情况,等到开产后发现就晚了,要调整就很困难,造成生产效益低下。
禽类羽毛的粗蛋白含量一般在85%以上,其中绝大部分都是角蛋白。由于羽毛中的蛋白质含量很高,人们便逐渐考虑用它来代替动物日粮中昂贵的蛋白质添加饲料(骨粉、肉粉、鱼粉),并将废弃的羽毛进行集中处理,用于制作羽毛粉。然而,目前市场上的羽毛粉产品多是通过物理的方法加工而成的,其某些热敏性的氨基酸(Cys、Lys等)在高温高压蒸煮水解的过程中会遭到破坏,导致氨基酸消化率降低或者蛋白质变性,酸碱中和水解法也会导致胱氨酸损失较多,Lys、Trp等氨基酸含量均下降明显,适口性变差,其饲喂效果差,很难被动物消化利用。
发明内容
本发明旨在提供一种酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用,提高生长速度和促进羽毛的生长,可促进羽毛发育完善,均匀度提高,体成熟和性成熟同步,提早5-10天产蛋,产蛋产峰期延长1个月。
本发明的第一个目的在于提供一种制备促蛋鸡换羽期羽毛生长的添加剂的方法,该方法可在中低温条件下制备获得丰富的动物小分子蛋白,容易消化和吸收,水解、酶解和发酵后的羽毛粉能提供蛋鸡羽毛生长所需要的丰富的胱氨酸,发酵后的添加剂同时含有抗菌肽成分,能直接杀菌抑菌,发病率低,有助于改善肠道菌群平衡,促进有益菌的生长,提高免疫机能,促进脂肪的代谢和改善胴体,提高生长速度和促进羽毛的生长。
在一种实施方式中,所述方法包括如下步骤:
(1)将羽毛粉漂洗干净,装入水解罐中,加入体积分数1~1.5%过氧乙酸溶液,在常压下加热水煮沸0.5~1.5小时;
(2)加入自然温度的纯净自来水,使羽毛粉的浓度为49~90g/L(或固液比为1:5~10),温度降低至40~45℃度左右;
(3)向步骤(2)的溶液中加入角蛋白酶,加酶量为20~30U/g羽毛粉,于35~40℃酶解反应2小时;
(4)将冰冻的新鲜黑水虻解冻后,与步骤(3)水解后的反应液搅拌均匀,加入终浓度1×109CFU/L的植物乳杆菌和酿酒酵母菌混合液,搅拌均匀;
(5)将胡萝巴、麸皮过2.0mm筛片进行粉碎投入混合机;
(6)将步骤(4)制得的混合液和步骤(5)的混合料一起投入混合机中,混合均匀;
(7)将步骤(6)制得的混合物进行密闭发酵36~48小时后低温烘干;
(8)将步骤(7)的烘干物过2.0mm筛片进行粉碎,与大豆异黄酮、溶血磷脂油、木聚糖酶、耐高温植酸酶、姜黄素、黄芪多糖、大叶青提取物一起投入混合机,混合均匀制得添加剂。
在一种实施方式中,根据羽毛粉的容重546g/L,水的容重1000g/L计,所述步骤(2)中羽毛粉的浓度为49.6g/L(对应固液比为1:10);所述步骤(2)中羽毛粉的浓度为90g/L(对应固液比为1:5)。
在一种实施方式中,所述步骤(3)酶解反应调节pH为6.0~10。
在一种实施方式中,所述低温烘干的温度为45~60℃。
在一种实施方式中,所述植物乳杆菌与酿酒酵母的菌浓之比为1~2:1。
在一种实施方式中,所述添加剂由如下重量份的组分组成:羽毛粉200~700份、黑水虻50~500份、胡萝巴50~500份、麸皮10~100份、角蛋白酶1~5份、植物乳杆菌0.5~2份、酿酒酵母菌0.5~2份、大豆异黄酮1~5份、木聚糖酶1~5份、溶血磷脂油10~50份、耐高温植酸酶1~5份、姜黄素1~5份、黄芪多糖1~5份、大叶青提取物1~5份。
在一种实施方式中,所述添加剂由如下重量份的组分组成:羽毛粉200~500份、黑水虻150~500份、胡萝巴100~500份、麸皮50~100份、角蛋白酶2~4份、植物乳杆菌1~2份、酿酒酵母菌0.5~1份、大豆异黄酮2~5份、木聚糖酶2~5份、溶血磷脂油20~50份、耐高温植酸酶2~5份、姜黄素2~5份、黄芪多糖2~5份、大叶青提取物2~5份。
在一种实施方式中,所述添加剂由如下重量份的组分组成:羽毛粉250份、黑水虻250份、胡萝巴350份、麸皮100份、角蛋白酶2份、植物乳杆菌2份、酿酒酵母菌1份、大豆异黄酮2份、木聚糖酶4份、溶血磷脂油25份、耐高温植酸酶4份、姜黄素4份、黄芪多糖2份、大叶青提取物4份。
本发明的第二个目的是提供应用所述制备方法得到的添加剂。
本发明的第三个目的是提供一种促蛋鸡羽毛生长的饲料,所述饲料含有:上述任一所述促蛋鸡换羽期羽毛生长的添加剂、玉米、豆粕、烘烤大豆、麸皮、玉米蛋白粉、柠檬酸渣、核甘酸渣、大豆油、复合预混料。
在一种实施方式中,所述的配合饲料由所述的促蛋鸡换羽期羽毛生长的添加剂10-40份,和如下重量份的饲料组分组成:
玉米200-700份、豆粕50-280份、烘烤大豆5-100份、麸皮5-120份、玉米蛋白粉5-50份、柠檬酸渣5-50份、核甘酸渣5-50份、大豆油0-20份、复合预混料10-40份。
在一种实施方式中,所述的配合饲料由所述的促蛋鸡换羽期羽毛生长的添加剂20-40份,和如下重量份的组分组成:
玉米400-650份、豆粕100-250份、烘烤大豆20-80份、麸皮40-120份、玉米蛋白粉10-40份、柠檬酸渣10-30份、核甘酸渣10-30份、大豆油0-20份、复合预混料20-40份。
在一种实施方式中,所述的配合饲料由所述的促蛋鸡换羽期羽毛生长的添加剂和如下重量份的组分组成:
玉米600份、豆粕130份、烘烤大豆50份、麸皮70份、玉米蛋白粉20份、柠檬酸渣20份、核甘酸渣20份、大豆油10份、复合预混料40份。
在一种实施方式中,所述复合预混料由维生素预混料、微量元素预混料、磷酸氢钙、羟基蛋氨酸钙、甲酸钙、碳酸钙、氯化钠、硫酸钙、蛋氨酸、赖氨酸硫酸盐、氯化胆碱、甜菜碱、乙氧基喹啉和稻壳粉混合而成,优选根据行业推荐用量进行混合,例如根据农业部第2625号公告和NRC(1994年)、以及中国NY/T33-2004鸡的饲料标准相结合。
在一种实施方式中,所述微量元素预混料由蛋氨酸锌、甘氨酸锌、硫酸锌、硫酸锰、碱式氯化铜、甘氨酸铁、硫酸亚铁、酵母硒、碘酸钙、氯化钴与沸石粉和稻壳粉混合而成,混合比例根据NY/T33-2004鸡的饲料标准推荐用量进行。
在一种实施方式中,所述维生素预混料由维生素A、维生素D3、维生素E、维生素K 3、维生素B1、维生素B2、维生素B6、维生素B12、叶酸、烟酰胺、泛酸钙、生物素和维生素C与载体稻壳粉混合而成,混合比例根据NY/T33-2004鸡的饲料标准推荐用量进行。
在一种实施方式中,所述促蛋鸡羽毛生长的配合饲料按如下方法进行制备:
(1)将维生素预混料、微量元素预混料、磷酸氢钙、羟基蛋氨酸钙、甲酸钙、碳酸钙、氯化钠、硫酸钙、蛋氨酸、赖氨酸硫酸盐、氯化胆碱、甜菜碱、乙氧基喹啉与稻壳粉按0.4:2:10:1.2:2:14:3.2:2:0.7:1.1:1.0:1:2:1.2比例进行混合成复合预混料;
(2)将玉米、豆粕、烘烤大豆、麸皮、玉米蛋白粉、柠檬酸渣、核甘酸渣过2.0mm筛片进行粉碎,按质量比(400~650):(100~250):(20~80):(40~120):(10~40):(10~30):(10~30)投入混合机;
(3)将步骤(1)和(2)的混合料与大豆油、添加剂一起投入混合机中,混合均匀;
(4)步骤(3)的混合料进入调质机,经调质,在85℃温度下制粒破碎,再分级过筛冷却而成配合饲料。
在一种实施方式中,所述大豆油与玉米的质量比为(0~20):(400~650)。
在一种实施方式中,所述添加剂与玉米的质量比为(20~40):(400~650)。
在一种实施方式中,所述酶解反应调节pH为6.0-9.0。
在一种实施方式中,所述低温烘干的温度为低于45-60℃。
本发明的另一个目的在于提供酶解发酵羽毛粉的方法及其在制备蛋鸡饲料中的应用,该饲料使用植物提取物替代抗生素,动物源性蛋白经菌酶协同发酵处理,提高原料的安全性和适口率,高营养高吸收,饲料利用率高。
本发明的有益效果如下:
1、本发明提供的水解发酵羽毛粉的制备方法,能够克服现有技术中羽毛粉高温制备方法导致的营养物质流失,可提供丰富的动物小分子蛋白,容易消化和吸收;能提供蛋鸡羽毛生长所需要的丰富的胱氨酸,制备酶解发酵羽毛粉中胱氨酸含量可达23.6mg/g,代谢能适宜,不产生脂肪肝的现象;
2、本发明制备的饲料使用微生物抗菌肽及植物提取物等替代抗生素,有助于杀菌抑菌,改善肠道菌群平衡,提高动物免疫机能,降低发病率;动物源性蛋白经菌酶协同发酵处理,提高原料的安全性和适口率,饲料利用率高,高胱氨酸含量可促进脂肪的代谢和改善胴体,高营养高吸收,提高生长速度和促进羽毛的生长,可促进羽毛发育完善,均匀度提高,体成熟和性成熟同步,提早5-10天产蛋,产蛋产峰期延长1个月。
具体实施方式
为了更清楚地说明本发明,下面结合优选实施例对本发明做进一步的说明。本领域技术人员应当理解,下面所具体描述的内容是说明性的而非限制性的,不应以此限制本发明的保护范围。
检测方法:
具体实施方式中涉及的检测方法参照GB/T22294-2208进行测定;
可溶性蛋白含量的检测:参照BCA法测定蛋白质含量的方法进行;
小肽含量的检测:采用HPLC高效液相色谱方法;本领域中小肽是指≤4个氨基酸组成的肽;
抑菌性能检测:按照牛津杯法检测。
本发明的发明人发现,如果在换羽期蛋鸡的配合饲料中添加一些有特定组成的添加剂,添加剂能提供丰富的动物小分子蛋白,容易消化和吸收,水解、酶解和发酵后的羽毛粉能提供蛋鸡羽毛生长所需要的丰富的胱氨酸,使用植物提取物替代抗生素,含有抗菌肽成分能直接杀菌抑菌,发病率低,改善肠道菌群平衡,促进有益菌的生长,提高免疫机能;促进脂肪的代谢和改善胴体,提高生长速度和促进羽毛的生长。而用于添加剂的组分包括:高温水解羽毛粉、黑水虻、胡萝巴、麸皮、角蛋白酶、植物乳杆菌、酿酒酵母菌、大豆异黄酮、溶血磷脂油、木聚糖酶、耐高温植酸酶、姜黄素、黄芪多糖、大叶青提取物。将这些动物和植物原料经菌酶发酵低温烘干与植物提取物等混合均匀,再与其他的原料混合,制得的配合饲料可以提高蛋鸡的生长速度和羽毛的完整性、光亮度和韧性。
本发明具体实施方式中所用的所有原料均为市售取得,其质量均符合国家标准。
本发明具体实施方式中维生素预混料,微量元素预混料的混合均按照行业推荐的用量,例如NY/T33-2004鸡的饲料标准进行混合。
实施例1酶解发酵羽毛粉的制备
(1)将羽毛粉漂洗干净,装入水解罐中,加入1.5%过氧乙酸溶液,在常压下加热水煮沸1小时;
(2)加入自然温度的纯净自来水,使羽毛粉的浓度为50g/L,温度降低至40℃;
(3)向步骤(2)的溶液中加入角蛋白酶,加酶量为25U/g羽毛粉,于40℃酶解反应2小时;
(4)将植物乳杆菌接种至MRS培养基中,37℃培养至菌浓达1×107CFU/mL;将酿酒酵母接种至YPD培养基中,于28℃培养至菌浓达1×107CFU/mL;将冰冻新鲜黑水虻解冻后,与步骤(3)水解后的反应液搅拌均匀,加入2份植物乳杆菌菌液和1份酿酒酵母菌菌液,使体系中的微生物终浓度达1×109CFU/L,搅拌均匀;
(5)将羽毛粉质量1.4倍的胡萝巴、0.4倍的麸皮过2.0mm筛片进行粉碎投入混合机;
(6)将步骤(4)制得的混合液和步骤(5)的混合料一起投入混合机中,混合均匀;
(7)将步骤(6)制得的混合物进行密闭发酵36小时后低温烘干至含水量低于13%,获得酶解发酵羽毛粉。
对比例1:
调整实施例1的角蛋白酶用量为5U/g,按照实施例1相同的方法处理羽毛粉。
对比例2:
调整实施例1的酶解温度为80℃,按照实施例1相同的方法处理羽毛粉。
对比例3:
省略实施例1的步骤(1),按照实施例1相同的方法处理羽毛粉。
对比例4:
调整实施例1的步骤(7)的发酵时间为12小时,按照实施例1相同的方法处理羽毛粉。
实施例2酶解发酵羽毛粉的分析
将实施例1和对比例1~4方法步骤7处理后的酶解发酵羽毛粉中蛋白质分子量分布、氨基酸含量及种类、抑菌效果进行测定,结果显示如表1:
表1不同方法处理羽毛粉后的质量评价
实施例3饲料添加剂的制备
该1000g饲料添加剂由如下组分组成:羽毛粉250份、黑水虻250份、胡萝巴350份、麸皮100份、角蛋白酶2份、植物乳杆菌2份、酿酒酵母菌1份、大豆异黄酮2份、木聚糖酶4份、溶血磷脂油25份、耐高温植酸酶4份、姜黄素4份、黄芪多糖2份、大叶青提取物4份。
所述饲料添加剂由下述步骤制成:
(1)将250g羽毛粉漂洗干净,装入水解罐中,加入1.5%过氧乙酸溶液,在常压下加热水煮沸1小时;
(2)加入自然温度的纯净自来水,使羽毛粉的浓度为50g/L,温度降低至40℃;
(3)向步骤(2)的溶液中加入角蛋白酶2g,加酶量为25U/g羽毛粉,于30℃酶解反应2小时;
(4)将植物乳杆菌接种至MRS培养基中,37℃培养至菌浓达1×107CFU/mL;将酿酒酵母接种至YPD培养基中,于28℃培养至菌浓达1×107CFU/mL;将冰冻新鲜黑水虻250g解冻后,与步骤(3)水解后的反应液搅拌均匀,加入终浓度为109CFU/L的植物乳杆菌菌液2g和酿酒酵母菌菌液1g,搅拌均匀;
(5)将胡萝巴350g、麸皮100g过2.0mm筛片进行粉碎投入混合机;
(6)将步骤(4)制得的混合液和步骤(5)的混合料一起投入混合机中,混合均匀;
(7)将步骤(6)制得的混合物进行密闭发酵36-48小时后低温烘干;
(8)将步骤(7)的烘干物过2.0mm筛片进行粉碎,与大豆异黄酮2g、木聚糖酶4g、溶血磷脂油25g、耐高温植酸酶4g、姜黄素4g、黄芪多糖2g、大叶青提取物4g一起投入混合机,混合均匀制得添加剂。
实施例4饲料添加剂的应用
将实施例3的饲料添加剂用于蛋鸡饲料中,每1000g蛋鸡饲料包括如下重量份的组分:
玉米600份、豆粕130份、烘烤大豆50份、麸皮70份、玉米蛋白粉20份、柠檬酸渣20份、核甘酸渣20份、大豆油10份、复合预混料40份、实施例3的饲料添加剂40份;
其中,复合预混料由维生素预混料0.4g、微量元素预混料2g、磷酸氢钙10g、羟基蛋氨酸钙1.2g、甲酸钙2g、碳酸钙14g、氯化钠3.2g、硫酸钙2g、蛋氨酸0.7g、赖氨酸硫酸盐1.1g、氯化胆碱1.0g、甜菜碱1g、乙氧基喹啉0.2g与稻壳粉1.2g进行混合而成;
微量元素预混料由蛋氨酸锌、甘氨酸锌、硫酸锌、硫酸锰、碱式氯化铜、甘氨酸铁、硫酸亚铁、酵母硒、碘酸钙、氯化钴与沸石粉和稻壳粉混合而成;
维生素预混料由维生素A、维生素D3、维生素E、维生素K 3、维生素B1、维生素B2、维生素B6、维生素B12、叶酸、烟酰胺、泛酸钙、生物素和维生素C与载体稻壳粉混合而成;
本实施中维生素预混料、微量元素预混料的混合按照中国NY/T33-2004鸡的饲养标准的推荐用量进行混合。
促蛋鸡羽毛生长的配合饲料的制备方法,包括如下步骤:
(1)将维生素预混料0.4g、微量元素预混料2g、磷酸氢钙10g、羟基蛋氨酸钙1.2g、甲酸钙2g、碳酸钙14g、氯化钠3.2g、硫酸钙2g、蛋氨酸0.7g、赖氨酸硫酸盐1.1g、氯化胆碱1.0g、甜菜碱1g、乙氧基喹啉0.2g与稻壳粉1.2g进行混合成复合预混料;
(2)将玉米600g、豆粕130g、烘烤大豆50g、麸皮70g、玉米蛋白粉20g、柠檬酸渣20g、核甘酸渣20g过2.0mm筛片进行粉碎投入混合机;
(3)将步骤(1)和(2)的混合料与大豆油10g、添加剂40g一起投入混合机中,混合均匀;
(4)步骤(3)的混合料进入调质机,经调质,在85℃温度下制粒破碎,再分级过筛冷却而成配合饲料;
步骤(1)微量元素预混料由蛋氨酸锌、甘氨酸锌、硫酸锌、硫酸锰、碱式氯化铜、甘氨酸铁、硫酸亚铁、酵母硒、碘酸钙、氯化钴与沸石粉和稻壳粉混合而成;
维生素预混料由维生素A、维生素D3、维生素E、维生素K3、维生素B1、维生素B2、维生素B6、维生素B12、叶酸、烟酰胺、泛酸钙、生物素和维生素C与载体稻壳粉混合而成。
实施例5促蛋鸡羽毛生的配合饲料的应用
本试验在广东肇庆某鸡场进行,选取63日龄体重相近的育成鸡1200只,随机分成试验组和对照组2组,每组3个重复,每个重复200只鸡。对照组喂食实施例4中不添加实施例3制备的饲料添加剂的饲料配方(玉米600份、豆粕130份、烘烤大豆50份、麸皮70份、玉米蛋白粉20份、柠檬酸渣20份、核甘酸渣20份、大豆油10份、复合预混料40份),试验组喂食实施例4的饲料。试验鸡采用阶梯式笼养,自由饮水,日喂3餐,按照常规免疫程序进行免疫。试验时间为56天。每天记录死亡只数、耗料量,每周定点笼位对鸡进行空腹称重和测胫长,计算均匀度,记录主翼羽换羽根数和重生羽毛感观等。试验结束后计算平均体重、死亡率、料重比等。育成期试验结束后,试验组和对照组饲喂相同的预产期饲料、产蛋期饲料,继续记录后续产蛋期生产性能数量,记录每天的产蛋数、蛋重,持续至154日龄,试验结果见表2。
表2本发明配合饲料对蛋鸡生长和羽毛更换的影响
从表2中可以看出:喂食实施例4的饲料的育成鸡与对照组相比,增重提高24.3%,料重比降低了22.6%,胫长和体重均匀度达标,比对照组都要好,且死亡率降低,说明实施例4的方法制备的饲料能促进育成鸡的生长,饲料利用率高。主翼羽换羽根数,实施例比对照组多1根,重生羽毛的感观比对照组要好,说明实施例4对羽毛的更换和生长有促进使用,有利于性成熟和体成熟同步。在接下来的产蛋期中,实施例4比对照组早8天见蛋,154日龄产蛋率上高峰92%,比对照组高8.1%,且平蛋重多2g/枚,产蛋总重多0.35kg/只。试验结果表明本发明的促蛋鸡羽毛生长的配合饲料,能促进羽毛和鸡体生长速度,可提早5-10天产蛋。
虽然本发明已以较佳实施例公开如上,但其并非用以限定本发明,任何熟悉此技术的人,在不脱离本发明的精神和范围内,都可做各种的改动与修饰,因此本发明的保护范围应该以权利要求书所界定的为准。
Claims (10)
1.一种制备促蛋鸡换羽期羽毛生长的添加剂的方法,其特征在于,包括如下步骤:
(1)将羽毛粉漂洗干净,在体积分数1~1.5%的过氧乙酸溶液中煮沸0.5~1.5小时;
(2)向步骤(1)处理后的羽毛粉中加入水,使羽毛粉的浓度为10~50g/L,降温至40~45℃;
(3)向步骤(2)的溶液中加入角蛋白酶,加酶量为20~30U/g羽毛粉,于35~40℃酶解;
(4)将黑水虻与步骤(3)水解后的反应液搅拌均匀,加入终浓度≥1×109CFU/L的植物乳杆菌和酿酒酵母菌液,搅拌均匀,制得混合液;
(5)将胡萝巴、麸皮粉碎、过筛,制得混合料;
(6)将步骤(4)制得的混合液和步骤(5)的混合料一起投入混合机中,混合均匀;
(7)将步骤(6)制得的混合物密闭发酵36~48小时后低温烘干。
2.根据权利要求1所述的方法,其特征在于,将步骤(7)的烘干物粉碎,与大豆异黄酮、溶血磷脂油、木聚糖酶、耐高温植酸酶、姜黄素、黄芪多糖、大叶青提取物混合均匀,制得添加剂。
3.根据权利要求2所述的方法,所述添加剂中各组分的质量份数为:羽毛粉200~700份、黑水虻50~500份、胡萝巴50~500份、麸皮10~100份、角蛋白酶1~5份、植物乳杆菌0.5~2份、酿酒酵母菌0.5~2份、大豆异黄酮1~5份、木聚糖酶1~5份、溶血磷脂油10~50份、耐高温植酸酶1~5份、姜黄素1~5份、黄芪多糖1~5份、大叶青提取物1~5份。
4.根据权利要求1所述的方法,其特征在于,步骤(3)酶解反应调节pH为6.0~10。
5.根据权利要求1所述的方法,其特征在于,步骤(4)所述植物乳杆菌与酿酒酵母的菌浓之比为(1~2):1。
6.根据权利要求1所述的方法,其特征在于,步骤(7)所述的低温烘干的温度为45~60℃。
7.应用权利要求1~6任一所述制备方法得到的添加剂。
8.一种促蛋鸡羽毛生长的饲料,其特征在于,所述促蛋鸡羽毛生长的配合饲料按如下方法进行制备:
(1)将维生素预混料、微量元素预混料、磷酸氢钙、羟基蛋氨酸钙、甲酸钙、碳酸钙、氯化钠、硫酸钙、蛋氨酸、赖氨酸硫酸盐、氯化胆碱、甜菜碱、乙氧基喹啉与沸石粉和稻壳粉混合,制成复合预混料;
(2)将玉米、豆粕、烘烤大豆、麸皮、玉米蛋白粉、柠檬酸渣、核甘酸渣过筛粉碎,按质量比(400~650):(100~250):(20~80):(40~120):(10~40):(10~30):(10~30)混合;
(3)将步骤(1)的预混料和步骤(2)的混合料与大豆油、权利要求6所述的添加剂一起投入混合机中,混合均匀;
(4)将步骤(3)的混合料在调质机中调质,在80~85℃制粒破碎,再分级过筛冷却,制得饲料。
9.根据权利要求8所述的饲料,其特征在于,所述大豆油与玉米的质量比为(0~20):(400~650);所述添加剂与玉米的质量比为(20~40):(400~650)。
10.含有权利要求7所述添加剂的饲料。
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