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Research on the Application of Active Dry Yeast Products

0 Author 2024-07-22 16:02:41

1.Active dry yeast can improve the growth performance and intestinal health of piglets.1.活性干酵母可以改善仔猪的生长性能和肠道健康。

The effect of active dry yeast on daily weight gain of piglets活性干酵母对仔猪日增重的影响

pilot 飞行员	control group 对照组	Experiment 1 实验1	Experiment 2 实验2	Experiment 3 实验3
Nursery period 幼儿园时期	406^a	456^b	447^b	462^b
Growth period	785^a	775^a	822^b	817^b
Fattening period	895^a	892^a	904^a	908^a
Throughout the period	743^a	754^ab	766^ab	771^b

Note: Lowercase letters of peers indicate significant differences (P<0.05), the same applies below.

The effect of active dry yeast on feed to weight ratio of piglets

pilot	control group	Experiment 1	Experiment 2	Experiment 3
Nursery period	1.53^a	1.46^b	1.46^b	1.48^b
Growth period	2.45^a	2.44^a	2.32^a	2.34^a
Fattening period	3.26^a	3.18^ab	3.16^ab	3.07^b
Throughout the period	2.65^a	2.59^ab	2.55^ab	2.52^b

Note: Lowercase letters of peers indicate significant differences (P<0.05), the same applies below.

The effect of active dry yeast on diarrhea rate and T lymphocyte transformation rate in piglets during the conservation period活性干酵母对保存期仔猪腹泻率和T淋巴细胞转化率的影响

index	control group 对照组	Experiment 1 实验1	Experiment 2 实验2	Experiment 3 实验3
diarrhea	5.34%a	3.52%b	2.65%b	4.12%b
T lymphocyte transformation rate	35.2%a	42.5%b	43.2%b	42.8%b

Note: Lowercase letters of peers indicate significant differences (P<0.05), the same applies below.Experimental animals: Du Da long piglets; Experimental period: The control group was fed a basic diet, while experimental group 1, experimental group 2, and experimental group 3 were added with 1kg of active dry yeast with a viable bacterial count of 15 × 109 cells/g per ton of feed throughout the entire period. The experimental period is 140 days.（Data quoted from Guo Yanjun, 2007）

The effect of different dosages of active dry yeast on the growth performance and diarrhea rate of weaned piglets

index	control group 对照组	0.25 g/kg ADY	0.50 g/kg ADY	1.00 g/kg ADY
initial weight/kg	7.95	8.02	8.02	7.95
The final weight/kg	21.38^b	22.40^ab	24.05^a	23.62^a
Average daily weight gain/(g•d^-1)	447.67^b	479.33	534.33^a	522.33^a
Daily average feed intake（g•d^-1)	883.50	888.20	918.5	920.66
f/g	1.97^a	1.85^ab	1.72^b	1.76^b
diarrhea%	3.73^a	2.54^b	1.86^c	2.05^c

Note: The same letter or no letter between data in the same column indicates no significant difference (P>0.05), while different lowercase letters indicate significant differences (P<0.05).Experimental animals: Healthy weaned piglets aged 30 days and weighing approximately 8kg; Experimental period: The control group was fed a basic diet, while the experimental group was added active dry yeast with a viable cell count greater than 2 × 1010 CFU/g to the basic diet. The experimental period is 30 days.(The above data is quoted from Wang Guohui, 2023)

1. Adding active dry yeast to the diet increased the average daily weight gain of the experimental group by 27.1% compared to the control group, and reduced the feed to weight ratio by 32.0%.

2. Adding active dry yeast can improve the apparent digestibility of CP, CF, NDF, and ADF in Qinchuan cattle. The time for conducting this experiment was from May to August in Fengdu County, Chongqing. The cattle were exposed to a humid and hot stress environment, and the growth promoting effect of yeast was well demonstrated in the second month of the experiment, indicating that active dry yeast does indeed have the effect of improving the growth performance of beef cattle.

Adding Active Dry Yeast to Nutrients of Qinchuan Cattle

The impact of apparent digestibility

3.Adding 2 g/d · head of active dry yeast to the diet can significantly increase the levels of fiber degrading bacteria, such as white rumen bacteria, yellow rumen bacteria, and butyric acid bacteria, and stabilize and increase rumen pH. Reduce the relative abundance of Streptococcus bovis and decrease the risk of subacute rumen acidosis in cattle.

The effect of adding active dry yeast on the microbial community in Qinchuan cow manure and feces
project	control group 对照组	experimental group
The first month（0~30d）
protozoon（×10^-1）	0.42±0.07^b	0.88±0.06^a
fungus（×10^-5）	1.42±0.05^a	0.82±0.06^b
ruminococcus albus（×10^-2）	0.36±0.03^b	0.52±0.04^a
Ruminococcus flavefaciens （×10^-3）	0.52±0.04	0.58±0.05
Succinic acid producing filamentous bacteria（×10^-2）	0.84±0.05	0.97±0.07
butyrivibrio fibrisolvens （×10^-2）	0.76±0.06^b	1.21±0.09^a
streptococcus bovis（×10^-4）链球菌宝(×10 ^-4 )	0.89±0.04^a	0.32±0.05^b
Prevotella rumenalis（×10^-2）普雷沃氏菌（×10 ^-2 ）	0.26±0.03^b	0.55±0.04^a
	0.78±0.06b	1.05±0.07a
The second month(60d)
protozoon（×10^-1）	0.35±0.04^b	0.68±0.05^a
fungus（×10^-5）	0.86±0.06^a	0.54±0.06^b
ruminococcus albus（×10^-2）	0.48±0.06^b	0.52±0.03^a
Ruminococcus flavefaciens（×10^-3）	0.77±0.06	0.78±0.05
Succinic acid producing filamentous bacteria（×10^-2）	0.86±0.06	0.87±0.05
butyrivibrio fibrisolvens （×10^-2）	0.76±0.06^b	1.31±0.09^a
streptococcus bovis（×10^-4）链球菌宝(×10 ^-4 )	1.59±0.09^a	0.36±0.05^b
Prevotella rumenalis（×10^-2）普雷沃氏菌（×10 ^-2 ）	0.46±0.04^b	0.75±0.07^a
Ruminobacter amylopHilus（×10^-3 ）支链淀粉瘤胃杆菌（Ruminobacter amylopHilus）（×10 ^-3 ）	0.95±0.07^b	1.19±0.07^a

Note: Comparison of peer data shows significant differences (P<0.05) with different letters on the shoulder label; The absence of letters on the shoulder marker indicates no significant difference (P<0.05).Experimental animals: Qinchuan cattle during the growth and fattening period; Experimental period: The control group was fed a basic diet, while the experimental group was added active dry yeast with a viable cell count of ≥ 2 × 1010/g to the basic diet. The experimental period is 60 days.注:同行数据比较显示肩标不同字母有显著差异(P<0.05);肩标上没有字母，差异无统计学意义(P<0.05)。实验动物:秦川牛生长育肥期;试验期:对照组饲喂基础饲粮，试验组在基础饲粮中添加活细胞数≥2 × 1010/g的活性干酵母。试验期为60 d。

(Data quoted from He Jingwei, 2023)(数据引自何精卫，2023)

4.Adding active dry yeast to the diet can reduce the diameter of yellow cattle meat muscle fibers, increase muscle fiber density, and make the meat more tender. Therefore, supplementing with active dry yeast can improve the quality of yellow beef and make the meat more fresh and tender.4.日粮中添加活性干酵母可使黄牛肉质肌纤维直径减小，肌纤维密度增加，肉质更嫩。因此，添加活性干酵母可以改善黄牛肉的品质，使肉质更加鲜嫩。

Experimental animals: Yanbian yellow cattle and beef cattle; Experimental period: The control group was fed a basic diet, while the experimental group was added active dry yeast with a viable cell count of ≥ 8 × 109 CFU/g to the basic diet. Breeding cycle: 8 weeks. 实验动物:延边黄牛、肉牛;试验期:对照组饲喂基础饲粮，试验组在基础饲粮中添加活细胞数≥8 × 109 CFU/g的活性干酵母。繁殖周期:8周。

(Data quoted from Feng Xin, 2023)(数据引用自冯鑫，2023)

5.Adding active dry yeast to the diet of dairy cows can increase the average milk production by 1.56kg/(head • day).5.在奶牛日粮中添加活性干酵母可使奶牛平均产奶量提高1.56kg/(头•天)。