CN114591934A - 增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂及猪饲料 - Google Patents
增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂及猪饲料 Download PDFInfo
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Abstract
本发明公开了一种增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂和猪饲料,包括如下酶活的组份:酸性蛋白酶1000~5000U/g;甘露糖酶200~1000U/g;淀粉酶10000~30000U/g;β‑木聚糖酶1000~5000U/g;β‑葡聚糖酶500~2000U/g,果胶酶100~500U/g,纤维酶150~500U/g。在育肥猪高糠麸型杂粮日粮中添加本发明的复合酶制剂增强肥育猪蛋白质的代谢和氮沉积作用,且不会明显降低肥育猪生长性能。
Description
技术领域
本发明属于畜牧养殖业技术领域,具体是涉及一种增强肥育猪蛋白质的代谢和氮沉积的添加复合酶制剂及猪饲料。
背景技术
粮食短缺是困扰我国饲料工业发展的主要因素。因此,我们应该坚持走节粮型饲料业发展道路,提高饲料利用率,尽可能用不短缺的饲料获得尽可能多的畜产品,减少畜禽生产对粮食的需求压力,是今后饲料工业的一个发展方向,酶制剂科学的发展为其找到了一条较好的解决途径。饲料中经常添加的酶有淀粉酶、蛋白酶、脂肪酶、纤维素酶、半纤维素酶、果胶酶以及植酸酶等,其中后几种酶动物自身不能合成,多来自微生物,主要用于消化畜禽自身不能消化的物质,或降解抗营养因子和有害物质。所以,只要使用合适的酶制剂,我们可以用高糠麸的饲料原料来减少配方中玉米、豆粕的使用,还可以提高饲料中营养物质的利用,减少氮磷浪费。
我国生猪行业,配合饲料仍然以玉米-豆粕型日粮为主体。但现在玉米、豆粕饲料短缺,而且价格奇高,导致饲养成本居高不下,是养殖企业不得不面对的问题。而大麦、小麦、次粉、麦麸、统糠、棉菜粕等非常规饲用原料,则由于存在某些缺陷(β-葡聚糖、β-木聚糖含量较高,抑制多种养分吸收和导致腹泻等),使用较少和困难,价格较低,具有相对较高的性价比。如何提高大麦、小麦、次粉、麦麸、统糠、棉菜粕等利用比例和降低负效应,值得研究。如,β-葡聚糖是一类非淀粉多糖,是小麦、麦麸、米糠等植物籽实细胞壁的多糖主要成份。β-葡聚糖会包裹一些营养物质,使消化酶不能接触底物,增加了动物肠道内容物的黏性,从而影响动物的消化吸收,降低饲料的营养价值。
发明内容
本发明提供了一种增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂,在育肥猪高糠麸型杂粮日粮中添加复合酶制剂,能够增强肥育猪蛋白质的代谢和氮沉积作用,且不会明显降低肥育猪生长性能。
一种增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂,包括如下酶活的组份:酸性蛋白酶1000~5000U/g;甘露糖酶200~1000U/g;淀粉酶 10000~30000U/g;β-木聚糖酶1000~5000U/g;β-葡聚糖酶500~2000U/g,果胶酶100~500U/g,纤维酶150~500U/g。
我们设计的复合酶在常规复合酶(蛋白酶、甘露糖酶、淀粉酶等)基础上,添加了含有动物体内不能分泌的β-葡聚糖酶、纤维素酶、木聚糖酶、果胶酶等,这些酶会与生猪源酶协同作用,促进饲料消化,增加营养摄取,提高饲料转换率。本试验在前期工作基础上,研发了新配方复合酶,探究新配方复合酶对肥育猪生长和氮磷代谢的影响,为提高饲料中增加大麦、小麦、次粉、麦麸、统糠、棉菜粕等利用比例和降低副作用提供依据。
作为优选,包括如下酶活的组份:酸性蛋白酶2000~4000U/g,甘露糖酶500~600U/g,淀粉酶10000~20000U/g,β-木聚糖酶2000~3000U/g,β- 葡聚糖酶1000~1200U/g,果胶酶100~300U/g,纤维酶200~300U/g。
作为优选,包括如下酶活的组份:500g/t新设计的酶制剂。配方酸性蛋白酶3000U/g,甘露糖酶550U/g,淀粉酶13000U/g,β-木聚糖酶2300U/g,β-葡聚糖酶1200U/g,果胶酶200U/g,纤维酶240U/g。
本发明公开了一种猪饲料,含有上述任一技术方案所述的增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂。
作为优选,以基础饲料计算,所述复合酶制剂的加入量为200~2000g/t。
作为优选,以基础饲料计算,所述复合酶制剂的加入量为500~1000g/t。
作为优选,所述猪饲料中的基础饲料包括玉米、大麦、小麦、米糠粕、四号粉、豆粕、玉米、植物油、小麦胚、高筋粉、糖蜜、预混料。
作为优选,所述基础饲料中各组分的重量百分比组成为:
玉米:25~35%;大麦:5~15%;小麦:10~20%;米糠粕:5~15%;四号粉:5~20%;豆粕:8~20%、玉米:1~10%、植物油:0.1~3%、小麦胚:1~10%、高筋粉:1~8%、糖蜜:1~3%、预混料:1~5%。
作为优选,所述预混料为每千克饲粮提供Cu 15~25mg,Zn 30~80mg,Mn 20~50mg,Fe 80~200mg,I 0.1~1mg,Se 0.1~0.5mg,VA 5000~10000 IU,VD3 1000~5000IU,VE 10~30mg,VK3 1~5mg,氯化胆碱100~350 mg,烟酰胺10~40mg,生物素0.1~0.5mg。
对于动物体内氮平衡和氨基酸平衡一般用血清尿素氮作为反映其状况的指标。血清中的尿素氮是通过鸟氨酸循环合成,是蛋白质、氨基酸代谢的终产物,其含量与体内氮沉积率、蛋白质或氨基酸利用率呈显著负相关。该试验生长肥育猪血清尿素氮低蛋白试验组都显著低于对照组,而较低的血清尿素氮值表明氨基酸平衡好,机体蛋白质合成率较高。与对照组相比,试验组血清尿素氮水平降低了10.54%,猪舍中氨气浓度降低了 28.89%,表明N利用提高,环境明显改善。
与现有技术相比,本发明的有益效果体现在:
由试验表明,采用本发明的复合酶制剂与普通复合酶制剂相比,试验组和对照组的日采食量、日增重、终重和料重比差异均不显著(p>0.05)。与对照组相比,试验组血清尿素氮水平降低了10.54%(p<0.05);猪舍中氨气浓度降低了28.89%(p<0.05),环境明显改善。
综上,在育肥猪高糠麸型杂粮日粮中添加本发明的复合酶制剂增强肥育猪蛋白质的代谢和氮沉积作用,且不会明显降低肥育猪生长性能。
具体实施方式
1.试验动物
试验选择初始体重60kg左右的杜大长三元肥育猪60头,采用单因子设计,分为2个处理组,各处理组公母各半,每个处理3个重复,每个重复10头猪,2个处理分别为对照组和试验组。试验期为55天。试验猪自由采食和饮水,饲养管理和免疫程序参照猪场常规程序进行。试验期间每日记录料耗,饲养试验结束时,禁食(自由饮水)12小时后称重,计算试验猪的日平均采食量、日增重和料重比。
试验时间:2019年8月4日-2019年9月29日
1.2试验日粮
试验饲粮参照美国NRC(1998)肥育猪的营养需要配合而成,对照组1使用基础日粮加500g/t普通酶制剂,试验组在高糠麸型杂粮配方中添加500g/t复合酶制剂。基础日粮配方及营养水平见表1:
对照组1使用的是500g/t普通酶制剂。配方酸性蛋白酶3OOOU/g,甘露糖酶15OU/g,淀粉酶13000U/g,β-木聚糖酶3OOU/g
试验组使用的是500g/t新设计的酶制剂。配方酸性蛋白酶3OOOU/g,甘露糖酶55OU/g,淀粉酶13000U/g,β-木聚糖酶23OOU/g,β-葡聚糖酶 1200U/g,果胶酶200U/g,纤维酶240U/g。
表1玉米豆粕型日粮配方及营养水平
注:1)预混料为每千克饲粮提供Cu 20mg,Zn 50mg,Mn 30mg, Fe 100mg,I 0.5mg,Se 0.15mg,VA 8000IU,VD3 3000IU,VE 20mg, VK3 2mg,氯化胆碱250mg,烟酰胺25mg,生物素0.15mg。2)消化能为计算值,其余均为实测值。本配方中另外还添加了玉米豆粕型的复合酶制剂。对照组1使用的是500g/t普通酶制剂。配方酸性蛋白酶3OOOU/g,甘露糖酶15OU/g,淀粉酶13000U/g,β一木聚糖酶3OOU/g。
表2高糠麸型杂粮配方及营养水平
注:1)预混料为每千克饲粮提供Cu 20mg,Zn 50mg,Mn 30mg, Fe 100mg,I 0.5mg,Se 0.15mg,VA 8000IU,VD3 3000IU,VE 20mg, VK3 2mg,氯化胆碱250mg,烟酰胺25mg,生物素0.15mg。2)消化能为计算值,其余均为实测值。本配方中另外添加了课题组设计的复合酶,主要在常规复合酶(蛋白酶、甘露糖酶、淀粉酶等)基础上,还添加了β -葡聚糖酶、纤维素酶、木聚糖酶、果胶酶等。
1.3试验方法
试验期间每日记录料耗,饲养试验结束时,禁食(自由饮水)12小时后称重,计算试验猪的日平均采食量、日增重和料重比。
血清尿素氮:试验结束当日,随机选取两组的育肥猪各6头(公母各半)前腔静脉采血样5mL,置于促凝管中,静置分离血清,以3000r/min 离心10min,分离上层血清,分装于1.5ml冻存管内,-20℃中冷藏。测定血清尿素氮指标。
氨气指标:采样点固定位于各试验猪舍的中央走道中间位置,高度离地面约0.8m。氨气浓度用气体检测仪现场测定,时间为晚上八点。
1.4数据处理
利用SPSS(16.0)统计学软件进行方差分析,采用最小显著差数法 (LSD)进行多重比较。数据以平均数±标准差(X±SD)表示。
2试验结果
2.1复合酶制剂对肥育猪生长性能的影响
由表3可知,试验组和对照组的日采食量、日增重、终重和料重比差异均不显著(p>0.05)。
表3复合酶制剂对肥育猪生长性能的影响
2.2复合酶制剂对肥育猪氮代谢的影响
表4复合酶制剂对肥育猪氮代谢的影响
由表4可知,与对照组相比,试验组血清尿素氮水平降低了10.54%(p<0.05);猪舍中氨气浓度降低了28.89%(p<0.05),环境明显改善。
Claims (8)
1.一种增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂,其特征在于,包括如下酶活的组份:酸性蛋白酶1000~5000U/g;甘露糖酶200~1000U/g;淀粉酶10000~30000U/g;β-木聚糖酶1000~5000U/g;β-葡聚糖酶500~2000U/g,果胶酶100~500U/g,纤维酶150~500U/g。
2.根据权利要求1所述的增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂,其特征在于,包括如下酶活的组份:酸性蛋白酶2000~4000U/g,甘露糖酶500~600U/g,淀粉酶10000~20000U/g,β-木聚糖酶2000~3000U/g,β-葡聚糖酶1000~1200U/g,果胶酶100~300U/g,纤维酶200~300U/g。
3.一种猪饲料,其特征在于,含有权利要求1或2所述的增强肥育猪蛋白质的代谢和氮沉积的复合酶制剂。
4.根据权利要求3所述的猪饲料,其特征在于,以基础饲料计算,所述复合酶制剂的加入量为200~2000g/t。
5.根据权利要求4所述的猪饲料,其特征在于,以基础饲料计算,所述复合酶制剂的加入量为500~1000g/t。
6.根据权利要求3所述的猪饲料,其特征在于,所述猪饲料中的基础饲料包括玉米、大麦、小麦、米糠粕、四号粉、豆粕、玉米、植物油、小麦胚、高筋粉、糖蜜、预混料。
7.根据权利要求6所述的猪饲料,其特征在于,所述基础饲料中各组分的重量百分比组成为:
玉米:25~35%;大麦:5~15%;小麦:10~20%;米糠粕:5~15%;四号粉:5~20%;豆粕:8~20%、玉米:1~10%、植物油:0.1~3%、小麦胚:1~10%、高筋粉:1~8%、糖蜜:1~3%、预混料:1~5%。
8.根据权利要求7所述的猪饲料,其特征在于,所述预混料为每千克饲粮提供Cu 15~25mg,Zn 30~80mg,Mn 20~50mg,Fe 80~200mg,I 0.1~1mg,Se 0.1~0.5mg,VA 5000~10000IU,VD3 1000~5000IU,VE 10~30mg,VK3 1~5mg,氯化胆碱100~350mg,烟酰胺10~40mg,生物素0.1~0.5mg。
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