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Feed Consumption/kg Weight Gain of Experimental Chicken 2


The TN2 batch in weeks 1, 2, 3, 4 were 1.66; 1.71; 1.76 and 1.79 kg respectively; the DC2 batch was 1.69; 1.75; 1.78; 1.79 kg. The statistical analysis results showed that there was no difference (P>0.05) between the two batches in the first 4 weeks.

From weeks 5, 6, 7, 8, 9, 10, 11, 12, feed consumption/kg of cumulative weight gain increased gradually and there was a clear difference (P<0.05) between the batch supplemented with Algimun and the batch not supplemented, respectively: 1.76; 1.76; 1.79; 1.92; 2.10; 2.28; 2.52 and 2.66 kg compared to: 1.84; 1.84; 1.87; 2.02, 2.24; 2.52;

2.78 and 2.97 kg. Thus, it can be seen that the cumulative feed cost up to the 12th week in the Algimun supplemented group was lower than that of the chicken group not supplemented with Algimun (P<0.05). Thus, when using Algimun in chicken farming, it reduces feed cost and gives good growth. Our results are equivalent to the research results of Tran Thanh Van et al. (2020) when supplementing Pak 4 way acid for Ri hybrid chickens.

Figure 3.9. Illustrative graph of feed consumption/kg cumulative weight gain of experimental chickens 2

3


2.5


2


1.5

Lot TN2

Lot DC2

1


0.5


0

1

2

3

4

5

6

7

8

9 10 11 12

Figure 3.9. Feed consumption/kg weight gain of experimental chicken 2

3.2.4.3. Metabolic energy and protein consumption of experimental chickens2


The amount of food consumed daily is related to the energy and protein levels in the portion. According to Vu Duy Giang (1997), different protein levels also affect the amount of food intake of poultry, thereby affecting their growth and development and productivity. From determining the food consumption, we can calculate the energy and protein consumption, which is the basis for building appropriate rations for each animal in each stage. Data on energy and protein consumption of experimental chickens 2 are shown in Table 3.20.

Table 3.20: Cumulative energy and protein expenditure of experimental chickens 2


Weeks old

Lot TN2

Lot 2

P


X

m

X


X

m

X


Energy expenditure/kg weight gain (Kcal )

0 - 1

5049.24

86.76

5156.63

88.60

0.32

1 - 2

5227.99

135.30

5324.49

137.80

0.12

2 - 3

5382.96

110.76

5439.45

111.93

0.18

3 - 4

5463.31

137.53

5473.85

137.79

0.19

4 - 5

5378.91

176.10

5598.72

183.30

0.09

5 - 6

5366.23

254.61

5606.34

266.00

0.07

6 - 7

5466.29

131.81

5684.59

141.49

0.06

7 - 8

5836.72

186.14

6136.71

186.16

0.08

8 - 9

6362.48a​

235.30

6765.34 b

193.74

0.03

9 - 10

6863.96a​

296.55

7586.80 b

202.78

0.02

10 - 11

7565.28a​

384.09

8351.02 b

297.62

0.02

11 - 12

7983.89a​

443.73

8902.42 b

400.99

0.01

Protein expenditure/kg weight gain (g/kg)

0 - 1

322.82

5.78

329.69

7.06

0.21

1 - 2

334.25

8.89

340.42

7.61

0.24

2 - 3

344.16

10.73

347.77

9.62

0.16

3 - 4

349.29

10.52

349.97

10.29

0.16

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Feed Consumption/kg Weight Gain of Experimental Chicken 2


Weeks old

Lot TN2

Lot 2

P


X

m

X


X

m

X


Energy expenditure/kg weight gain (Kcal )

4 - 5

343.90

10.29

357.95

10.23

0.24

5 - 6

343.18

15.55

358.38

12.97

0.12

6 - 7

348.87

13.22

362.84

11.01

0.06

7 - 8

369.95

18.68

388.56

11.13

0.15

8 - 9

399.86

17.93

424.33

11.34

0.06

9 - 10

428.39a​

15.72

471.07 b

16.79

0.04

10 - 11

468.29a​

14.47

514.55 b

22.49

0.04

11 - 12

492.11a​

12.11

545.92 b

20.61

0.03

Note: Horizontally, numbers with different letters are statistically different (P < 0.05).

The results of Table 3.20 show that: ME consumption for 1 kg of cumulative weight gain in weeks 1, 2, 3, 4 in the experimental group is 5049.24; 5227.99; 5382.96 and 5463.31 kcal; in the control group is 5156.63; 5324.49; 5439.45; 5473.85 kcal. Statistical comparison results show that in the first 4 weeks this index is not significantly different (P>0.05). However, from week 5 to week 8, energy consumption in the experimental group and the control group has a different trend (P = 0.06 - 0.09) specifically: in the experimental group, ME consumption/kg of weight gain in weeks 5, 6, 7, 8 is 5378.91; 5366.23;

5466.295836.72 kcal; in the control group, the corresponding values ​​were: 5598.72; 5606.34; 5684.59

and 6136.71 kcal.

From week 9 to week 12, the energy consumption of the experimental group was lower than that of the control group. This difference was statistically significant (P<0.05). Specifically, the energy consumption of the experimental group in weeks 9, 10, 11, and 12 was: 6362.48; 6863.96; 7565.28; 7983.89 (Kcal/kg weight gain). Similar to the group

control: 6765.34; 7586.80; 8351.02; 8902.42 (Kcal/kg weight gain). Table 3.20 shows protein consumption in the weeks of experimental chicken 2.

Similar to energy expenditure, protein expenditure in 2 batches in weeks


From week 1 to week 6, there was no difference (P>0.05), specifically: in weeks 1, 2, 3, 4, 5, 6, crude protein consumption/kg weight gain in the group supplemented with the diet was higher.

The products are 322.82; 334.25; 344.16; 349.29; 33.90 and 343.18g; in the batch not

supplement are: 329.69; 340.42; 347.77; 349.97; 357.95 and 358.38g;

Protein consumption/kg cumulative weight gain in weeks 7, 8, 9 in the group supplemented with Algimun tended (P= 0.06) to be lower than the group not supplemented, specifically: in the supplemented group: 348.87; 369.95 and 399.86g; in the group not supplemented: 362.84; 388.56; 424.33g.

However, in the 10th, 11th, and 12th weeks, the protein consumption/kg weight gain in the group supplemented with Algimun was 428.39; 468.29; 492.11g, lower (P<0.05) than the control group (471.07; 514.55; 545.92g).

3.2.5. Effects of Algimun on production index and economic index of experimental chicken 2

Production index (PI) is a synthetic index that evaluates the production ability of an individual, a line, a breed or a diet. The results of the production index PI and EN of experimental chicken 2 are shown in Table 3.21.

Data in Table 3.21 shows that: The production index PI of chickens in the experimental group is always higher. In the period of 8-12 weeks of age, chickens supplemented with Algimun were higher than those not supplemented with the product. This difference tends to be statistically significant (P < 0.05). This can be explained by the fact that chickens supplemented with Algimun had a higher weight gain and lower feed consumption/kg weight gain than chickens not supplemented with the product, leading to a higher PI index.


Table 3.21. Production index and economic index of experimental chicken 2



Index

Weeks old

Lot TN2

Lot 2


P

X

m

X

Cv %


X

m

X

Cv %


PI

8

127.44a​

5.06

5.61

113.79a​

2.07

2.57

0.13

9

115.81a​

3.53

4.31

100.35a​

2.50

3.52

0.06

10

105.68a​

4.50

6.02

84.75 b

2.57

4.29

0.03

11

92.02a​

2.00

3.08

74.18b​

2.12

4.05

0.03

12

87.08a​

3.13

5.09

68.63b​

1.83

3.78

0.01


EN

8

6.63a​

0.12

2.50

5.86b​

0.15

3.67

0.04

9

5.51a​

0.15

3.73

4.67b​

0.10

3.11

0.03

10

4.64a​

0.14

4.31

3.50b​

0.10

3.93

0.02

11

3.66a​

0.12

4.56

2.77b​

0.08

4.15

0.02

12

3.27a​

0.10

4.13

2.40b​

0.07

4.24

0.04

Note: Horizontally, numbers with different letters are statistically different (P < 0.05).

From there, it shows that the economic index (EN) also gives similar results as the PI index, that is, chickens supplemented with Algimun are always higher than chickens not supplemented with this product. In the 8-12 week old stage, experimental chickens have a higher EN index than control chickens with a statistically significant difference (P < 0.05).

Figure 3.10 shows the production and economic indicators of experimental chicken 2.


Production index of experimental chicken 2 (PI)

140

120

100

80

60

40

20

0

8

9

10

11

12

Lot TN 2 Lot DC 2

Economic index of experimental chicken 2 (EN)

7

6

5

4

3

2

1

0

8

9

10 11

12

Lot TN 2 Lot DC 2


Figure 3.10. Graph of production index and economic index of experimental chicken 2

Thus, using Algimun is much more economically efficient than not using Algimun for broilers.

According to author Tran Thanh Van et al (2020), supplementing Park4way acid for hybrid Ri chickens also brings specific benefits to breeders: Survival rate, growth, feed conversion ratio, production index and economic index are higher than when not supplementing Park4way acid, contributing to increasing breeders' income by 5.06%.

3.2.6. Effect of Algimun on meat yield of experimental 2

Meat yield is a very important indicator in commercial broiler farming. Meat yield is evaluated by examining chickens at 84 days of age based on the indicators of carcass weight, thigh weight, breast weight and abdominal fat weight.

To accurately evaluate the meat production ability of the Ri hybrid chicken breed due to the influence of Algimun preparation, we conducted a survey of chickens at the age of 12 weeks.


The results of the autopsy to examine the meat production of experimental chickens 2 at 12 weeks of age are shown in Table 3.22.

Table 3.22: Results of autopsy on experimental chickens 2



Target

Distinction

Lot TN2

Lot DC2


P

X

m

X

X

m

X

Carcass percentage (%)

♂

79.22

0.33

78.65

0.38

0.99

♀

77.50

0.58

77.21

0.60

0.61

Thigh muscle ratio (%)

♂

22.25

0.22

21.68

0.25

0.06

♀

19.87

0.36

19.55

0.32

0.07

Pectoral muscle ratio (%)

♂

16.54

0.35

16.22

0.62

0.83

♀

16.10

0.39

15.86

0.66

0.63

Ratio of thigh muscle + chest muscle (%)

♂

38.79

0.36

37.90

0.34

0.91

♀

35.97

0.45

35.41

0.50

0.28

Abdominal fat percentage (%)

♂

1.82

0.06

1.81

0.08

0.99

♀

1.85

0.12

1.83

0.20

0.83

* Carcass percentage (%)

The results of the carcass ratio showed that the carcass ratio of male chickens in the TN2 batch was 79.22%, and that of the DC2 batch was 78.65%. This ratio of female chickens in the TN2 and DC2 batches was 77.50% and 77.21%, respectively.

* Thigh muscle ratio (%)

The thigh muscle ratio of roosters and hens in TN2 batch was 22.25% and 19.87%, respectively, in DC2 batch was 21.68% and 19.55%.

* Chest muscle ratio (%)

The breast muscle ratio of roosters supplemented with the product was 16.54%, hens was 16.10%, the corresponding ratio in the control group was: 16.22% and 15.86%.


* Abdominal fat percentage (%)

The abdominal fat ratio of roosters supplemented with Algimun was 1.82%, while that of roosters not supplemented with the product was 1.81%. In hens, the corresponding ratios were 1.85% and 1.83%.

The differences between the two experimental groups in terms of the surveyed surgical indicators were not statistically significant.

3.2.7. Effect of Algimun on meat quality of experimental chicken 2

Table 3.23: Meat quality of experimental chicken 2



Target

Mechanical position

Lot TN 2

Lot DC 2


P


X

m

X

Cv %


X

m

X

Cv %

Rate of water loss

management (%)

Femoral

0.87

0.02

3.97

0.87

0.043

6.93

0.62

Chest


1.86


0.05

3.93


1.78


0.081


6.42


0.64

Loss rate

Processed water (%)

Femoral

25.84

1.45

7.91

25.68

1,099

6.05

0.51

Chest


25.84


1.45

7.91


25.68


1,099


6.05


0.51

pH 15

Femoral

6.39

0.20

4.33

6.21

0.292

6.64

0.49

Chest

5.91

0.13

3.09

5.83

0.171

4.14

0.87

pH 24

Femoral

5.65

0.21

5.21

5.73

0.140

3.46

0.83

Chest

5.56

0.12

3.11

5.67

0.210

5.24

0.79

Color: L

(light color)

Femoral

53.96

0.87

2.27

54.21

1,805

4.71

0.63

Chest

57.21

1.68

4.16

57.34

2,104

5.19

0.92

a (red)

Femoral

16.99

0.52

4.29

17.05

0.721

5.98

0.81

Chest

11.93

0.35

4.09

11.86

0.589

7.02

0.94

b(color)

Yellow)

Femoral

19.88

0.87

6.21

19.23

1,112

8.18

0.73

Chest

12.84

0.32

3.49

12.46

0.549

6.23

0.71

Toughness of

meat (kg)

Femoral

19.89

1.44

10.21

20.46

1,641

11.34

0.67

Chest

34.46

1.77

7.25

34.21

1,788

7.39

0.71

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