Abstract:

Adding yeast peptide (Halor Tid) to feed, or replacing acidifiers, or replacing acidifiers and probiotics, to observe the effect on growth performance of broilers, provide technical basis for the application of Halor Tid. A total of 320 1-day-old Russian 308 white feathered cocks were randomly divided into 4 groups with 8 replicates per group and 10 cocks per replicate. Group 1: basic diet + plant extract 300-500 g/t+ probiotics 500-1000 g/t+ acidifier 1000-2000 g/t, group 2: Basic diet + plant extract 300-500g/t + probiotics 500-100g/t + acidifier 1000-2000g/t +Halor Tid 100-200g/t, group 3: Basic diet + plant extract 300-500g/t + probiotics 500-1000g/t +Halor Tid100-200g/t, group 4: basic diet + plant extract 300-500g/t +Halor Tid100-200g/t. The yellow feather broiler test was carried out at the same time, and the design scheme was the same as above. The experiment period of white feather broilers was 42 d, and that of yellow feather broilers was 70 d. The results showed that when Halor Tid was used to replace acidifiers and probiotics in the diets of white and yellow broilers, the final body weight was increased by 1.2% and 4.4%, and the survival rate was increased by 1.37% and 4.15%, respectively. For yellow-feather broilers, the ratio of feed to meat was reduced by 2.53%, which had certain effects on improving breeding effect and reducing feed costs.

Key words: yeast peptide; White feather broiler; Yellow feather broiler; Growth performance; Survival rate

1 Purpose

After adding yeast peptide (Halor Tid), or replacing acidifiers, or replacing acidifiers and probiotics in feed, the effects on growth performance of broilers were observed, which provided technical basis for the application of yeast peptide.

2 Materials and methods

2.1 Trial time and place

The trial was conducted from April to June 2023 at a livestock pilot farm in Vietnam.

2.2 Trial materials

Yeast peptide (Halor Tid) is from Enhalor Biotechnology Co., Ltd. in Beijing and distributed by Anh Duong Khang Company Limited in Vietnam. Plant extracts, probiotics, acidifiers are provided by the  broiler farm.

2.3 Trial design

A total of 320 1-day-old Russian 308 white feathered cocks were randomly divided into 4 groups with 8 replicates per group and 10 cocks per replicate. Group 1: basic diet + plant extract 300-500 g/t+ probiotics 500-1000 g/t+ acidifier 1000-2000 g/t, group 2: Basic diet + plant extract 300-500g/t + probiotics 500-100 g/t + acidifier 1000-2000 g/t +Halor Tid 100-200 g/t, group 3: Basic diet + plant extract 300-500 g/t + probiotics 500-1000 g/t +Halor Tid100-200 g/t, group 4: basic diet + plant extract 300-500 g/t +Halor Tid 100-200 g/t. The yellow feather broiler test was carried out at the same time, and the design scheme was the same as above. The trial design scheme was shown in Table 1.

2.4 Feeding Management

The trial of white feather broilers was divided into three stages: 0-15 d, 16-28 d and 29-42 d. Yellow-feathered broilers were also tested in three phases, with the same design as white-feathered broilers, the trial lasted for 70 d.

Table 1 Trial design

Note: The dosage of various additives is gradually reduced before, during and after.

3 Results

3.1 Effects of Halor Tid on growth performance of white feather broilers

Table 2 Effects of Halor Tid on growth performance of white feather broilers

As can be seen in Table 2, there were no statistically significant differences among all groups (P > 0.05). On the basis of trial group 1, adding Halor Tid, or adding Halor Tid instead of acidifying agent, adding Halor Tid instead of acidifying agent and probiotics, the final body weight Halor Tid of broilers was higher than that of trial group 1 supplemented with plant essential oil, probiotics and acidifying agent. They increased by 0.45%, 0.02% and 1.2%, respectively. Feed intake showed a similar pattern, while daily gain and feed/meat ratio showed no advantage. The survival rates of trial groups 2, 3 and 4 supplemented with Halor Tid were 1.37%, 2.74% and 1.37% higher than those of trial group 1, respectively. In conclusion, adding Halor Tid to the diet, or replacing acidifiers and probiotics, can improve the weight and survival rate of broilers.

3.2 Effects of Halor Tid on growth performance of yellow feather broilers

As can be seen from Table 3, there were no statistically significant differences among all groups of indicators (P > 0.05). When Halor Tid was used to replace acidifiers and probiotics (group 4), the body weight of yellow feather broilers at the end of 70 days was 4.4% higher than that of group 1. The FCR decreased by 2.53%. The survival rate of all groups supplemented with Halor Tid was higher than that of group 1, which increased by 10.45% in group 2 and 4.15% in group 4. It can be seen that replacing acidifiers and probiotics with Halor Tid in the feed of yellow feather broilers can increase the final body weight, reduce FCR and improve the survival rate, which is feasible in terms of both the use effect and economic benefit.

Table 3 Effects of Halor Tid on growth performance of yellow feather broilers

Conclusion: 

Replacing acidifier and probiotics with Halor Tid in the diets of white and yellow feather broilers can increase the body body weight and survival rate by 1.2% and 4.4%, and the survival rate by 1.37% and 4.15%, respectively. For yellow feather broilers, the FCR can also be reduced by 2.53%, which has a certain effect on improving the breeding effect and reducing the feed cost.

Halor Tid^® (Yeast peptide) is a yeast peptide developed by Beijing Enhalor Biotechnology Institute based on yeast fermentation platform. It can enhance animal immune function, improve intestinal health, inhibit pathogens, especially against pathogenic Escherichia coli, and is one of the effective alternatives to antimicrobial resistance.