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Journal of Zhejiang University (Agriculture and Life Sciences)  2021, Vol. 47 Issue (5): 628-636    DOI: 10.3785/j.issn.1008-9209.2020.11.051
Animal sciences & veterinary medicine     
Effects of biofermentation feed added in antibiotic-free diet on growth performance, nutrient metabolism and serum indexes of broiler chickens
Lai JIANG1,2(),Yubo HUANG2,Chunchun YUAN2,Xiaoqing DING2,Yanbin HOU2,Jinghui FAN3,Lichun QIAN1,2()
1.Hainan Institute of Zhejiang University, Sanya 572025, Hainan, China
2.Key Laboratory of Animal Nutrition and Feed Science of the Ministry of Agriculture and Rural Affairs, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China
3.Animal Husbandry Institute, Hangzhou Academy of Agricultural Sciences, Hangzhou 310021, China
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Abstract  

The study focuses on the effects of fermented feed with tea residue, soybean meal and bran as substrates on growth performance, nutrient metabolic rates and serum indexes of broiler chickens. Using single factor test design, 240 one-day-of-age Ross 308 broiler chickens with similar body mass and good health were randomly divided into five groups [control group Tl, fed the basic diet; experimental group T2, fed the basic diet+methylene salicylic acid bacitracin (40 mg/kg); experimental groups T3, T4, T5, fed the fermented feed to replace 2%, 4% and 6% soybean meal in the basic diet, respectively] with six replicates per treatment and eight chickens per replicate. The test period was 42 d. The results showed that: 1) Compared with the control group Tl, the average daily gain from 1 to 21 days of age, 21 day-of-age and 42 day-of-age body masses of broiler chickens in the T4 group significantly increased (P<0.05), and the feed-to-gain ratio was significantly reduced from 1 to 21 days of age (P<0.05). 2) The apparent metabolic rates of crude protein of broiler chickens in T4 and T5 groups were significantly higher than those in T1 and T2 groups (P<0.05). 3) Compared with the control group Tl, the serum albumin levels of the T2 and T5 groups significantly increased (P<0.05), and the serum antioxidant indexes (total superoxide dismutase, catalase activities, and malondialdehyde content) of the T5 group were significantly different (P<0.05). In summary, the addition of fermented feed with tea residue, soybean meal and bran as substrates in the diets can improve broiler chickens’ growth performance, slaughter performance, apparent metabolic rates of crude protein and serum index levels, reflecting growth-promoting effects similar to antibiotics.



Key wordsfermented feed      broiler chickens      antibiotics      production performance      apparent metabolic rate     
Received: 05 November 2020      Published: 27 October 2021
CLC:  S 831.5  
Corresponding Authors: Lichun QIAN     E-mail: 779862494@qq.com;lcqian@zju.edu.cn
Cite this article:

Lai JIANG,Yubo HUANG,Chunchun YUAN,Xiaoqing DING,Yanbin HOU,Jinghui FAN,Lichun QIAN. Effects of biofermentation feed added in antibiotic-free diet on growth performance, nutrient metabolism and serum indexes of broiler chickens. Journal of Zhejiang University (Agriculture and Life Sciences), 2021, 47(5): 628-636.

URL:

http://www.zjujournals.com/agr/10.3785/j.issn.1008-9209.2020.11.051     OR     http://www.zjujournals.com/agr/Y2021/V47/I5/628


无抗日粮中添加生物发酵饲料对肉鸡生长性能、养分代谢及血清指标的影响

为研究以茶渣、豆粕和麸皮为底物的发酵饲料对肉鸡生长性能、养分代谢率及血清指标的影响,采用单因素设计,选取240羽体质量相近、健康状况良好的1日龄罗斯308肉鸡,随机分为5组,每组6个重复,每个重复8只鸡,试验期42 d。其中:对照组T1,饲喂基础日粮;试验组T2,饲喂基础日粮+亚甲基水杨酸杆菌肽(40 mg/kg);试验组T3、T4、T5,分别用发酵饲料代替基础饲粮中2%、4%和6%的豆粕。结果表明:1)与对照组T1相比,T4组肉鸡 1—21日龄的平均日增质量、21日龄和42日龄体质量均显著增加(P<0.05),1—21日龄料重比显著降低(P<0.05)。2)T4和T5组肉鸡粗蛋白的表观代谢率显著高于T1和T2组(P<0.05)。3)与对照组T1相比,T2和T5组血清白蛋白水平显著提高(P<0.05),T5组血清抗氧化指标(总超氧化物歧化酶、过氧化氢酶活性和丙二醛含量)均差异显著(P<0.05)。综上所述,在肉鸡饲粮中添加以茶渣、豆粕和麸皮为底物的发酵饲料可以提高肉鸡的生长性能、屠宰性能、粗蛋白的表观代谢率和血清指标水平,呈现和抗生素相似的促生长效果。


关键词: 发酵饲料,  肉鸡,  抗生素,  生产性能,  表观代谢率 

项目

Item

1—21日龄 1 to 21 days of age22—42日龄 22 to 42 days of age
T1T2T3T4T5T1T2T3T4T5
原料 Ingredient/%
玉米 Corn57575757576161616161
豆粕 Soybean meal31312927252828262422
发酵饲料 Fermented feed0024600246
进口鱼粉 Imported fishmeal4444433333
豆油 Soybean oil4444444444
预混料1) Premix1)4444444444
合计 Total100100100100100100100100100100
营养水平2) Nutrient level2)
代谢能 Metabolic energy/(MJ/kg)3.003.003.003.003.013.033.033.033.033.04
粗蛋白 Crude protein/%20.9020.9020.7220.5420.3619.2019.2019.0218.8418.66
钙 Ca/%1.001.001.001.001.010.900.900.900.900.91
总磷 Total P/%0.690.690.690.690.700.620.620.620.620.63
赖氨酸 Lysine/%1.231.231.231.231.231.141.141.141.141.14
蛋氨酸 Methionine/%0.530.530.530.530.530.450.450.450.450.45
Table 1 Compositions and nutrient levels of basal diets
参量 ParameterT1T2T3T4T5
初始体质量 ml/g44.23±1.7343.33±1.1843.79±1.6944.79±1.6943.12±0.94
21日龄体质量m21/g760.95±21.39b786.85±42.65ab768.13±23.90ab794.60±16.97a760.40±14.40b
42日龄体质量m42/g1 976.7±85.11b2 034.58±56.38ab2 029.67±42.39ab2 063.92±41.95a2 031.25±73.40ab
死亡率Mortality rate/%6.254.174.172.094.17
1—2l日龄 1 to 21 days of age
平均日采食量ADFI/g52.22±2.0051.34±0.6551.77±1.1652.48±1.0651.61±1.39
平均日增质量ADG/g34.13±0.99b35.41±2.02ab34.51±1.07ab35.70±0.64a34.18±0.96b
料重比F/G1.53±0.03a1.45±0.08b1.50±0.03ab1.47±0.03b1.51±0.02ab
22—42日龄 22 to 42 days of age
平均日采食量ADFI/g117.52±6.22120.03±3.98121.34±2.61121.50±6.88117.37±4.87
平均日增质量ADG/g57.89±5.3459.42±3.7760.07±2.0460.45±2.0960.50±3.33
料重比F/G2.03±0.102.02±0.112.02±0.062.01±0.111.94±0.10
1—42日龄 1 to 42 days of age
平均日采食量ADFI/g84.87±3.5685.69±2.1686.56±1.4986.99±3.1084.49±2.72
平均日增质量ADG/g46.01±2.7247.42±1.3547.29±0.9848.08±1.0147.34±1.74
料重比F/G1.84±0.051.81±0.041.83±0.041.81±0.061.78±0.04
Table 2 Effects of fermented feed on growth performance of broiler chickens
参量 ParameterT1T2T3T4T5
屠宰率 Dressing percentage92.67±0.34b93.80±0.42a93.69±0.87ab94.02±0.72a93.94±0.63a
半净膛率 Semi-eviscerated percentage84.50±1.0485.00±1.6983.06±4.6886.24±0.8586.24±1.25
全净膛率 Eviscerated percentage73.18±2.67b73.05±1.93b73.69±1.35ab75.45±0.56a74.53±0.86ab
胸肌率 Breast muscle percentage26.06±2.8725.69±1.8127.22±2.7627.30±0.7726.84±1.49
腿肌率 Leg muscle percentage22.84±0.7921.94±0.3522.34±0.5222.18±0.4022.50±0.81
Table 3 Effects of fermented feed on slaughter performance of broiler chickens
参量 ParameterT1T2T3T4T5
胸腺指数 Thymus index1.90±0.45b2.28±0.83ab2.88±0.65a3.19±1.03a3.04±0.69a
脾脏指数 Spleen index1.02±0.260.91±0.110.97±0.211.07±0.191.01±0.10
法氏囊指数 Bursa of Fabricius index1.48±0.281.61±0.521.61±0.301.63±0.371.77±0.44
Table 4 Effects of fermented feed on immune organ indexes of broiler chickens
参量 ParameterT1T2T3T4T5
粗蛋白 Crude protein60.23±3.21b60.61±2.55b64.09±1.62ab67.00±4.60a68.77±3.72a
粗脂肪 Crude fat70.40±3.6872.10±2.6773.74±3.0872.52±1.2174.58±2.28
粗灰分 Crude ash35.29±5.3834.71±4.4635.76±2.1335.47±2.2430.10±4.13
粗纤维 Crude fiber19.39±2.1519.51±3.0817.99±0.3418.31±3.6517.44±2.54
钙 Ca40.00±4.36ab37.61±3.16b43.12±2.18ab44.33±1.54a43.42±3.42a
总磷 Total P46.03±1.7847.97±4.4148.65±6.2049.34±1.4749.14±3.76
Table 5 Effects of fermented feed on nutrient metabolic rates of broiler chickens
参量 ParameterT1T2T3T4T5
过氧化氢酶 CAT/(IU/mL)2.82±0.87b4.12±0.36b3.07±0.78b4.13±0.61b6.46±1.83a
总超氧化物歧化酶 T-SOD/(IU/mL)260.72±38.94b275.08±41.64b357.83±22.87a378.99±33.87a368.79±19.44a
丙二醛 MDA/(nmol/mL)4.14±0.44a3.57±0.58ab3.63±0.31ab3.27±0.83ab3.15±0.74b
Table 6 Effects of fermented feed on serum antioxidant capacity of broiler chickens
参量 ParameterT1T2T3T4T5
葡萄糖 Glucose/(mmol/L)10.97±0.3311.48±0.7111.33±1.1912.02±1.3411.83±0.88
白蛋白 Albumin/(g/L)12.80±1.41b14.61±2.12a12.80±0.93b14.12±1.31ab14.91±1.05a
总蛋白 Total protein/(g/L)37.68±1.8339.24±5.9139.30±4.2440.48±1.7841.44±2.23
Table 7 Effects of fermented feed on serum biochemical indexes of broiler chickens
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