动物营养学报 >

2020 , Vol. 32 >Issue 8: 3708 - 3716

DOI: https://doi.org/10.3969/j.issn.1006-267x.2020.08.029

反刍与草食动物营养与饲料 RUMINANT AND HERBIVORE NUTRITION AND FEED

不同类型白酒糟对奶公牛生长性能、养分表观消化率、血清生化指标和瘤胃发酵参数的影响

  • 周芯宇 ,
  • 王之盛 ,
  • 胡瑞 ,
  • 王雪莹 ,
  • 祝伊枭 ,
  • 曹广 ,
  • 代秦丹 ,
  • 师俊华 ,
  • 汪成 ,
  • 彭全辉 ,
  • 邹华围 ,
  • 薛白 ,
  • 王立志
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  • 四川农业大学动物营养研究所, 四川省牛低碳养殖与安全生产高校重点实验室, 成都 611130
周芯宇(1994-),女,四川成都人,硕士研究生,从事反刍动物营养与饲料科学研究。E-mail:741442077@qq.com

收稿日期: 2020-02-17

  网络出版日期: 2020-08-13

基金资助

牛羊节本增效的精细化饲养关键技术研发（2017YFD0502005）；四川省科技计划资助（2018NZ0002）

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Effects of Different Types of White Distiller's Grains on Growth Performance, Nutrient Apparent Digestibility, Serum Biochemical Indices and Rumen Fermentation Parameters of Dairy Bulls

  • ZHOU Xinyu ,
  • WANG Zhisheng ,
  • HU Rui ,
  • WANG Xueying ,
  • ZHU Yixiao ,
  • CAO Guang ,
  • DAI Qindan ,
  • SHI Junhua ,
  • WANG Cheng ,
  • PENG Quanhui ,
  • ZOU Huawei ,
  • XUE Bai ,
  • WANG Lizhi
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  • Key Laboratory of University in Cattle Low Carbon Breeding and Safety Production in Sichuan Province, Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China

Received date: 2020-02-17

  Online published: 2020-08-13

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摘要

本试验旨在研究不同类型白酒糟对奶公牛生长性能、养分表观消化率、血清生化指标和瘤胃发酵参数的影响。采用单因素随机区组试验设计，将18头21月龄、平均体重为（550±43）kg的中国荷斯坦奶公牛随机分为3组，每组6头牛，根据前期瘤胃体外发酵试验结果，在3组饲粮中分别添加10%的浓香型干酒糟、酱香型湿酒糟和酱香型发酵酒糟。预试期14 d，正试期60 d，在正试期第53~59天进行消化试验。结果表明：1）酱香型发酵酒糟组的平均日增重显著高于酱香型湿酒糟组（P<0.05），料重比显著低于酱香型湿酒糟组（P<0.05）。2）酱香型发酵酒糟组和浓香型干酒糟组有机物、中性洗涤纤维、酸性洗涤纤维表观消化率显著高于酱香型湿酒糟组（P<0.05），而浓香型干酒糟组的粗蛋白质表观消化率显著低于酱香型发酵酒糟组和酱香型湿酒糟组（P<0.05）。3）酱香型发酵酒糟组血清总蛋白、葡萄糖、甘油三酯含量显著高于酱香型湿酒糟组（P<0.05），但其血清尿素氮含量显著低于酱香型湿酒糟组（P<0.05）。4）酱香型发酵酒糟组瘤胃液微生物蛋白浓度显著高于浓香型干酒糟组和酱香型湿酒糟组（P<0.05），但其瘤胃液氨态氮浓度显著低于浓香型干酒糟组和酱香型湿酒糟组（P<0.05）；酱香型发酵酒糟组和浓香型干酒糟组瘤胃液总挥发性脂肪酸和丙酸浓度显著高于酱香型湿酒糟组（P<0.05）。综上所述，3种类型白酒糟中，酱香型发酵酒糟促进了奶公牛瘤胃微生物发酵，提高了饲粮粗蛋白质、中性洗涤纤维、酸性洗涤纤维等养分的表观消化率和饲料转化效率，促生长效果更优。

关键词： 白酒糟; 奶公牛; 生长性能; 养分表观消化率; 瘤胃发酵

本文引用格式

周芯宇 , 王之盛 , 胡瑞 , 王雪莹 , 祝伊枭 , 曹广 , 代秦丹 , 师俊华 , 汪成 , 彭全辉 , 邹华围 , 薛白 , 王立志 . 不同类型白酒糟对奶公牛生长性能、养分表观消化率、血清生化指标和瘤胃发酵参数的影响[J]. 动物营养学报, 2020 , 32(8) : 3708 -3716 . DOI: 10.3969/j.issn.1006-267x.2020.08.029

Abstract

The purpose of this experiment was to study the effects of different types of white distiller's grains on growth performance, nutrient apparent digestibility, serum biochemical indices and rumen fermentation parameters of dairy bulls. Single factor randomized block design was applied in this experiment. Eighteen 21-month-old Chinese Holstein dairy bulls with an average body weight of (550±43) kg were divided into three groups with six dairy bulls in each group. According to the results of rumen fermentation in vitro in the early research, the diets of three groups were supplemented with 10% different types of white distiller's grains, namely, Luzhou flavor dried distiller's grains, Maotai flavor wet distiller's grains and Maotai flavor fermented distiller's grains. The period of trial was 60 d with 14 d of pretrial. The digestive experiment was carried during the 53th to 59th day of trial period. The results showed as follows:1) the average daily gain of Maotai flavor fermented distiller's grains group was significantly higher than that of Maotai flavor wet distiller's grains group (P<0.05), and its feed/gain was significantly lower than that of Maotai flavor wet distiller's grains group (P<0.05). 2) The apparent digestibility of organic matter, neutral detergent fiber and acid detergent fiber of Maotai flavor fermented distiller's grains group and Luzhou flavor dried distiller's grains group were significantly higher than those of Maotai flavor wet distiller's grains group (P<0.05), while the apparent digestibility of crude protein of Luzhou flavor dried distiller's grains group was significantly lower than that of Maotai flavor fermented distiller's grains group and Maotai flavor wet distiller's grains group (P<0.05). 3) The contents of serum total protein, glucose and triglyceride of Maotai flavor fermented distiller's grains group were significantly higher than those of Maotai flavor wet distiller's grains group (P<0.05), and its serum urea nitrogen content was significantly lower than that of Maotai flavor wet distiller's grains group (P<0.05). 4) The concentration of rumen fluid microbial protein of Maotai flavor fermented distiller's grains group was significantly higher than that of Luzhou flavor dried distiller's grains group and Maotai flavor wet distiller's grains group (P<0.05), while its rumen fluid ammonia nitrogen concentration was significantly lower than that of Luzhou flavor dried distiller's grains group and Maotai flavor wet distiller's grains group (P<0.05). The concentrations of rumen fluid total volatile fatty acids and propionate of Maotai flavor fermented distiller's grains group and Luzhou flavor dried distiller's grains group were significantly higher than that of Maotai flavor wet distiller's grains group (P<0.05). In conclusion, among 3 types of white distiller's grains, Maotai flavor fermented distiller's grains can promote rumen microbial fermentation of dairy bulls, improve apparent digestibility of nutrients such as crude protein, neutral and acid detergent fiber in the diet, improve feed conversion rate, and has an optimal growth promoting effect.

Key words： white distiller's grains; dairy bulls; growth performance; nutrient apparent digestibility; rumen fermentation

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