不同酸化剂对断奶仔猪胃肠道pH和消化酶活性的影响
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摘要
为研究不同酸化剂对断奶仔猪胃肠道pH和消化酶活性的影响。试验选取21日龄断奶、初始体重为6.85±0.24 kg的"杜×长×大"三元杂交仔猪72头,随机分为3个处理,每个处理4个重复,每个重复6头仔猪。分别饲喂玉米-豆粕型基础饲粮和在基础日粮中添加柠檬酸1.0%、幼添宝0.7%的2种日粮。结果表明,与对照组相比,日粮中添加1.0%柠檬酸能显著降低胃内pH(P<0.05);1.0%柠檬酸组和0.7%幼添宝组有降低空肠和回肠段pH、提高胃蛋白酶活性的趋势,但差异均不显著(P>0.05)。由此可见,在早期断奶仔猪饲粮中添加酸化剂可刺激胃酸和胃蛋白酶分泌,降低十二指肠、空肠回肠段pH,但对脂肪酶和淀粉酶活性影响较小。
This trial mainly studied the effect of different acidifiers on gastrointestinal pH and digestive enzyme activities in weaned piglets. A total of 72 nursery piglets with the initial body weight of(6.85±0.24) kg were randomly divided into three groups, each group had four replicates and each replicate had six piglets. The trial group was fed with basic diets, supplemented with 1.0% citric acid group and 0.7% Youtianbao group. The result showed that compared with control group, dietary supplementation of 1.0% citric acid significantly reduced gastric pH(P<0.05). 1.0%citric acid group and 0.7% Youtianbao group had the tendency to decrease the pH of jejunum and ileum and to increase pepsinase activity, no obvious difference(P>0.05). Thus, adding acidifier to the diet of early weaned piglets could stimulate the secretion of gastric acid and pepsinase, reduced the pH value of duodenum and jejunum, but had little effect on lipase and amylase activities.
This trial mainly studied the effect of different acidifiers on gastrointestinal pH and digestive enzyme activities in weaned piglets. A total of 72 nursery piglets with the initial body weight of(6.85±0.24) kg were randomly divided into three groups, each group had four replicates and each replicate had six piglets. The trial group was fed with basic diets, supplemented with 1.0% citric acid group and 0.7% Youtianbao group. The result showed that compared with control group, dietary supplementation of 1.0% citric acid significantly reduced gastric pH(P<0.05). 1.0%citric acid group and 0.7% Youtianbao group had the tendency to decrease the pH of jejunum and ileum and to increase pepsinase activity, no obvious difference(P>0.05). Thus, adding acidifier to the diet of early weaned piglets could stimulate the secretion of gastric acid and pepsinase, reduced the pH value of duodenum and jejunum, but had little effect on lipase and amylase activities.
引文
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[9]高飞,宋益贞,李伟.不同加工工艺的酸化剂对仔猪生长性能和肠道健康的影响[J].广东饲料,2016,25(2):30-33.
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[11]Scipioni R,Zaghini G,Boavati A.Acidified diets in early weaned piglets[J].Zootec Nutr Anim,1978(4):201-208.
[12]刘德周.断奶仔猪日粮中添加柠檬酸试验研究[D].杨凌:西北农林科技大学,2002.
[13]冷向军,王康宁,杨凤,等.酸化剂对早期断奶仔猪胃酸分泌消化酶活性和肠道微生物的影响[J].动物营养学报,2002,14(4):44-48.
[14]卢娜,李娜,陈宝江,等.日粮中添加不同酸化剂对断奶仔猪的消化环境和生化指标的影响[J].饲料研究,2015(3):52-54.
[15]Taylor W H.Studies on gastric proteolysis 4.Proteinase activity of gastric juice and gastric-mucosal extracts at pH 6 to 8[J].Journal of Biochemistry,1959(71):626-632.
[16]Kidder D E,Manners M J.Digestion in the pig[J].Kingstan Press,Bath,UK.1978:21-29.
[17]Snook J T.Protein digestion nutritional and metabolic considerations[J].World Review of Nutrition and Diet,1973(18):122-165.
[2]谢实勇.仔猪早期断奶综合征的发生与防治措施[J].中国动物保健,2001(4):18-19.
[3]李兰海.酸化剂和牛至油替代硫酸粘杆菌素对断奶仔猪的影响[D].南昌:江西农业大学,2018.
[4]韩庆功,崔艳红,李丹,等.复合酸化剂对断奶仔猪生长性能、抗体水平及粪便微生物的影响[J].饲料工业,2016,37(6):13-17.
[5]皮宇,孙丽莎,陈青,等.饲用酸化剂的作用机理及其在畜禽生产中的应用[J].饲料博览,2014(3):26-30.
[6]薛洋.腹泻仔猪脏器指数、肠道形态和胃肠道内容物pH特征及灌服粪肠球菌对其影响[D].南京:南京农业大学,2015.
[7]姚继明,孟秀丽,吕锋,等.复合有机酸酸化剂对断奶仔猪生长性能及其肠道微生物菌群的影响[J].饲料工业,2017,38(2):11-16.
[8]苏永腾,陈丽媛.复合酸化剂对断奶仔猪生长性能和肠道健康的影响[J].饲料工业,2017,38(1):25-28.
[9]高飞,宋益贞,李伟.不同加工工艺的酸化剂对仔猪生长性能和肠道健康的影响[J].广东饲料,2016,25(2):30-33.
[10]Risley C R,Kornegay E T,Lindemann M D,et al.Effect of feeding organic acids on selected intestinal content measurements at varying times postweaning in pigs[J].Journal of Animal Science,1992,70(1):196-206.
[11]Scipioni R,Zaghini G,Boavati A.Acidified diets in early weaned piglets[J].Zootec Nutr Anim,1978(4):201-208.
[12]刘德周.断奶仔猪日粮中添加柠檬酸试验研究[D].杨凌:西北农林科技大学,2002.
[13]冷向军,王康宁,杨凤,等.酸化剂对早期断奶仔猪胃酸分泌消化酶活性和肠道微生物的影响[J].动物营养学报,2002,14(4):44-48.
[14]卢娜,李娜,陈宝江,等.日粮中添加不同酸化剂对断奶仔猪的消化环境和生化指标的影响[J].饲料研究,2015(3):52-54.
[15]Taylor W H.Studies on gastric proteolysis 4.Proteinase activity of gastric juice and gastric-mucosal extracts at pH 6 to 8[J].Journal of Biochemistry,1959(71):626-632.
[16]Kidder D E,Manners M J.Digestion in the pig[J].Kingstan Press,Bath,UK.1978:21-29.
[17]Snook J T.Protein digestion nutritional and metabolic considerations[J].World Review of Nutrition and Diet,1973(18):122-165.