畜牧兽医学报 ›› 2016, Vol. 47 ›› Issue (7): 1422-1427.doi: 10.11843/j.issn.0366-6964.2016.07.015

• 动物营养 • 上一篇    下一篇

盲肠灌注不同SCFA对驴乳生产性能及乳脂肪酸组成的影响

周小玲1,2,方雷1,2,王连群1,2,陈根元1,2,窦全林3*   

  1. (1.塔里木大学动物科学学院,阿拉尔 843300; 2.新疆生产建设兵团塔里木畜牧科技重点实验室,阿拉尔 843300; 3.青海大学农牧学院,西宁 810016)
  • 收稿日期:2015-09-21 出版日期:2016-07-23 发布日期:2016-07-23
  • 通讯作者: 窦全林,副教授,E-mail:452856362@qq.com
  • 作者简介:周小玲( 1983-) ,女,四川内江人,副研究员,博士生,主要从事畜产品品质及营养调控研究,E-mail:zxldky@126.com
  • 基金资助:

    国家自然科学基金项目(31160461)

Effects of Cecal Infusion of Different SCFA on Donkey Milk Performance and Milk Fatty Acid Profile

ZHOU Xiao-ling 1,2,FANG Lei 1,2,WANG Lian-qun 1,2,CHEN Gen-yuan 1,2,DOU Quan-lin 3*   

  1. (1.College of Animal Science,Tarim University,Alaer 843300,China;2.Key Laboratory of Tarim Animal Husbandry Science and Technology of Xinjiang Production & Construction Group,Alaer 843300,China;3.Agriculture and Animal Husbandry College of Qinghai University,Xining 810016,China)
  • Received:2015-09-21 Online:2016-07-23 Published:2016-07-23

摘要:

旨在了解驴盲肠发酵产物对乳成分合成的影响。本研究选择4头安装永久盲肠瘘管的泌乳母驴(体重(182±9) kg),在泌乳晚期((155±15) d),经盲肠用连续灌注法,采用4×4拉丁方设计,连续3 h灌注3种不同比例和组合的短链脂肪酸(SCFA):乙丙组(乙酸150 mmol•h-1 +丙酸50 mmol•h-1)、乙丁组(乙酸170 mmol•h-1 +丁酸30 mmol•h-1)、乙丙丁组(乙酸130 mmol•h-1 +丙酸50 mmol•h-1 +丁酸20 mmol•h-1),对照组灌注相同体积的缓冲液。结果发现,不同处理组间乳产量无显著差异(P>0.10)。乙丁组乳脂、非脂固形物、乳糖和乳蛋白含量均显著高于乙丙丁组(P<0.10);乙丙和乙丁组中乳蛋白含量显著高于乙丙丁组(P<0.10),其余各指标差异不显著(P>0.10)。乙丙和乙丙丁组的中链脂肪酸比例显著高于对照组(P<0.05),乙丙、乙丁和乙丙丁组长链脂肪酸比例显著低于对照组(P<0.05)。结果显示,经盲肠灌注乙酸和丁酸有助于提高乳成分含量,灌注乙酸和丙酸有利于增加乳脂的中链脂肪酸比例,盲肠SCFA参与并影响驴乳脂合成。

Abstract:

To investigate the effects of cecal fermentation products on donkey milk synthesis,4 donkeys installed permanently cecal fistula were selected (body weight (182±9) kg) at late lactation stage ((155±15) d).Through continuous infusion method via cecum,using 4×4 Latin square design,3 different proportions and combinations of short chain fatty acids (SCFA) were continuous infused for 3 h:AP group (acetic acid of 150 mmol•h-1 + propionic acid of 50 mmol•h-1),AB group (acetic acid of 170 mmol•h-1 + butyric acid of 30 mmol•h-1),APB group (acetic acid of 130 mmol•h-1 + propionic acid of 50 mmol•h-1 + butyric acid of 20 mmol•h-1),and the control group was perfused equivalent volume of buffer solution,to study the effects of different compositions and proportions of SCFA on donkey milk production and milk fatty acids.The results showed that there was no significant difference (P>0.10) in milk yield among different treatments.Milk fat,non-fat solid,lactose and protein contents were significantly higher in AB group than in APB group (P<0.10);In AP and AB groups,milk protein contents were significantly higher than that in the APB group (P<0.10),the other indices of milk constituents showed no significant difference among different groups (P>0.10).Compared to control group,percent of middle-chain fatty acids in AP and APB groups were significantly increased (P<0.05),while percent of the long-chain fatty acids in AP,AB and APB groups were lower than that in control group(P <0.05).It was concluded that infusion of acetic and butyric acids through cecum helped to improve contents of milk constituents,and infusion of acetic and propionic acids increased percent of middle-chain fatty acids of milk fat,SCFAs from cecum directly affected donkey milk synthesis.

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