**Table 1.**

**87**

**Group** At the age of 31 days

Control 1st experimental

2nd experimental

3rd experimental

At the age of 36 days

Control 1st experimental

2nd experimental

3rd experimental

At the age of 38 days

Control 1st experimental

2nd experimental

3rd experimental

At the age of 42 days

Control 1st experimental

2nd experimental

3rd experimental

*Note: \*P* **Table 2.**

*The ratio of parts of poultry carcasses of experimental groups, (n = 3).*

≤ *0,95to the control.*

1798.0 ± 132.0 1545.0 ± 383.0

1553.0 ± 23.0 1919.0 ± 89.0

726.0 ± 108.0 678.0 ± 182.0

705.0 ± 1.0 835.0 ± 45.0

252.0 ± 20.0

314.0 ± 6.0

237.0 ± 3.0

261.0 ± 23.0

182.0 ± 10.0

217.0 ± 9.0

157.0 ± 5.0

283.0 ± 55.0

177.0 ± 25.0

215.0 ± 51.0

159.0 ± 250

289.0 ± 83.0

230.0 ± 4.0

266.0 ± 22.0

188.0 ± 2.0

344.0 ± 2.0

44.0 ± 3.0

27.0 ± 17.0

9.0 ± 7.0

20.0 ± 8.0

1442.0 ± 67.0 1390.0 ± 42.0 1414.0 ± 48.0 1501.0 ± 115.0

569.0 ± 51.0 542.0 ± 22.0

527.0 ± 1.0 602.0 ± 64.0

218.0 ± 12.0

259.0 ± 1.0

202.0 ± 36.0

206.0 ± 2.0

207.0 ± 3.0

264.0 ± 4.0

173.5 ± 12.5

211.0 ± 4.0

197.0 ± 1.0

255.0 ± 13.0

171.0 ± 5.0

196.0 ± 8.0

203.0 ± 3.0

259.0 ± 1.0

167.0 ± 15.0

233.0 ± 21.0

11.00 ± 7.0

29.0 ± 12.0

31.5 ± 1.0

14.0 ± 2.0

1305.5 ± 44.5 1271.0 ± 57.0 1251.5 ± 15.5 1210.5 ± 70.5

515.0 ± 5.0 490.0 ± 56.0

476.0 ± 6.0 461.0 ± 27.0

167.0 ± 9.0

178.0 ± 8.0

125.0 ± 3.0

246.0 ± 28.0

165.0 ± 9.0

187.0 ± 5.0

134.0 ± 6.0

256.0 ± 26.0

164.0 ± 6.0

190.0 ± 0.0

135.0 ± 5.0

245.0 ± 15.0

171.0 ± 17.0

190.0 ± 6.0

131.0 ± 11.0

264.0 ± 4.0

34.50 ± 0.5 47.0 ± 27.0 33.5 ± 15.5 33.0 ± 1.5

920.0 ± 64.51 956.0 ± 40.84 974.67 ± 86.35 835.33 ± 66.03

292.67 ± 35.07 343.33 ± 10.48 332.0 ± 38.07 284.67 ± 28.85

116.67 ± 8.74

118.0 ± 19.23

91.33 ± 5.70

194.67 ± 19.06

130.0 ± 10.58

150.67 ± 2.91

106.67 ± 6.57

226.0 ± 16.0

126.67 ± 9.68

141.33 ± 7.06

98.0 ± 7.57

201.33 ± 17.68

125.33 ± 2.40

155.33 ± 2.91

100.67 ± 2.40

216.67 ± 13.68

29.33 ± 14.71 45.34 ± 4.16 29.33 ± 14.71 29.99 ± 10.26

**Weight of eviscerated carcass**

**Breast**

**Leg, including**

**lower leg**

**thigh**

**Wing**

**Skeleton**

**Technical waste and process losses**

*Role of Humic Substances in Formation of Safety and Quality of Poultry Meat*

*DOI: http://dx.doi.org/10.5772/intechopen.96595*

*Slaughter qualities of experimental birds (n = 3).*

#### *Humic Substances*


#### *Role of Humic Substances in Formation of Safety and Quality of Poultry Meat DOI: http://dx.doi.org/10.5772/intechopen.96595*

**Table 2.**

 *The ratio of parts of poultry carcasses of experimental groups, (n = 3).*

*Humic Substances*

2511.0 ± 91.0

2222.00 ± 10.0

88.49

1910.50 ± 95.50

76.09

**86**

**Index** At the age of 42 days

Preslaughterlive weight

Weightofsemieviscerated carcass, g

% Weightofeviscerated carcass, g

% **Table 1.**

*Slaughter qualities of experimental birds (n = 3).*

2402.00 ± 14.00

2060.00 ± 14.0

85.76 1774.00 ± 14.00

73.86

2197.00 ± 27.00 1794.00 ± 39.0

81.66 1530.00 ± 38.00

69.64

2139.0 ± 11.0 1842.00 ± 6.00

86.12 1577.00 ± 23.00

73.73

**Control**

**1stexperimental group**

**2ndexperimental group**

**3rdexperimental group**


#### **Table 3.**

*Yield of carcass parts, %.*

of the study the yield of the carcasses of specimen in the control was 40.38%, then in the carcasses of their analogs in the 1stexperimental group it was 43.88%, in the 2nd - 45.40%, in the 3rd group 43.51% or more, respectively, by 3.50; 5.02 and 3.13%.

The study of the morphological composition of carcasses of broiler chickens at the age of 31 and 42 days made it possible to establish the yield of various muscle groups: pectoral, femoral, as well as muscles of the lower leg and trunk, the ratio of edible (the mass of all muscles, skin with subcutaneous fat, liver, heart, muscular stomach, lungs, kidneys, internal fat) parts and inedible ones (head, legs, intestines with pancreas, bones, cuticle of the muscular stomach, glandular stomach, gallbladder, spleen, trachea, esophagus, goiter, thyroid and thymus glands, testes, ovary), the ratio of muscles to bones.

**89**

9.28%, respectively (**Table 4**).

*Morphological composition of broiler chicken carcasses, %.*

higher than in the control group (1.09).

*Role of Humic Substances in Formation of Safety and Quality of Poultry Meat*

**Control 1st** 

pectoral 28.05 31.25 30.66 26.31 femoral 10.11 11.64 12.04 16.61 muscles of the lower leg 7.06 7.76 8.30 8.92 muscles of the trunk 7.25 5.18 5.84 7.36 muscles of wings and neck 3.26 4.31 3.65 6.26 Ratioofediblepartstoinedible 1.09 1.40 1.36 1.32 Muscle-to-boneratio 2.08 1.99 2.05 1.92

pectoral 29.88 40.30 30.79 31.47 femoral 11.88 7.94 9.54 11.08 muscles of the lower leg 8.50 6.94 7.12 7.07 muscles of the trunk 4.13 5.46 6.62 4.66 muscles of wings and neck 3.50 2.36 3.57 5.12 Ratioofediblepartstoinedible 1.47 1.93 1.67 1.88 Muscle-to-boneratio 1.75 2.24 1.97 2.08

**experimental**

**2nd experimental**

56.18 60.14 60.49 65.46

57.89 63.0 57.64 59.4

**3rd experimental**

**Index Group**

It was found out that the yield of muscle tissue in the carcasses of broilers of the experimental groups during slaughter on the 31st day of rearing had a significant difference, exceeding the value of the analogs of the control group by 3.96, 4.31 and

The higher meat yield from the carcasses of broilers of the 1st and 2nd experimental groups is mainly due to the better growth of the pectoral muscles (31.25 … 30.66%) and muscle tissue of the limbs (19.40 and 20.34%), in the 3rd group – of the femoral muscles (16.61%) and lower leg (8.92%), muscles of the wings and neck (6.26%). This was the result of the stimulating effect of the pretreated feed with the preparation with humates on the digestion processes and muscle tissue synthesis. In the studied period of poultry slaughter the ratio of the mass of the carcass edible parts to the mass of inedible parts is 1.40; 1.36 and 1.32 respectively, which is

According to the results of poultry slaughter at the end of fattening, broilers in the experimental groups also exceeded the control ones, especially chickens that ate feed treated with a preparation with minimum humate content (1st experimental group). Their carcasses had high meat qualities - the ratio of edible parts to inedible ones was 1.93, muscles-to-bones ratio - 2.24, and the yield of pectoral muscles was 40.30%. On the basis of experimental data, it can be stated that the inclusion of a dry feed additive based on unmodified microporous humic acids in the amount of 1 and 1.5 g per 1 kg of compound feed to the main diet of broiler chickens gives

*DOI: http://dx.doi.org/10.5772/intechopen.96595*

At the age of 31 days

At the age of 42 days

**Table 4.**

Muscle yield to the eviscerated carcass mass, including

Muscle yield to the eviscerated carcass mass, including


#### *Role of Humic Substances in Formation of Safety and Quality of Poultry Meat DOI: http://dx.doi.org/10.5772/intechopen.96595*

#### **Table 4.**

*Humic Substances*

Fattening period - 31 days

Technical waste and process

Fattening period – 36 days

Technical waste and process

Fattening period – 38 days

Technical waste and process

Fattening period – 42 days

Technical waste and process

the ratio of muscles to bones.

*Yield of carcass parts, %.*

losses

losses

losses

losses

and 3.13%.

**Table 3.**

**Carcass part Group**

**Control 1st** 

Breast 31.81 35.91 34.06 34.08 Leg 30.51 28.03 28.80 28.09 Wing 10.94 10.25 10.94 10.93 Skeleton 23.55 21.06 23.19 23.30

Breast 39.46 38.55 38.05 38.08 Leg 27.65 27.85 28.13 28.50 Wing 10.03 10.62 10.71 10.33 Skeleton 20.22 19.28 20.46 20.32

Breast 39.46 38.99 37.27 40.11 Leg 32.04 32.52 33.31 31.78 Wing 11.58 12.30 12.27 13.46 Skeleton 16.16 14.10 14.92 13.72

Breast 40.38 43.88 45.40 43.51 Leg 27.59 25.37 25.69 29.49 Wing 10.46 10.29 10.11 12.35 Skeleton 19.13 18.71 18.22 13.60

of the study the yield of the carcasses of specimen in the control was 40.38%, then in the carcasses of their analogs in the 1stexperimental group it was 43.88%, in the 2nd - 45.40%, in the 3rd group 43.51% or more, respectively, by 3.50; 5.02

The study of the morphological composition of carcasses of broiler chickens at the age of 31 and 42 days made it possible to establish the yield of various muscle groups: pectoral, femoral, as well as muscles of the lower leg and trunk, the ratio of edible (the mass of all muscles, skin with subcutaneous fat, liver, heart, muscular stomach, lungs, kidneys, internal fat) parts and inedible ones (head, legs, intestines with pancreas, bones, cuticle of the muscular stomach, glandular stomach, gallbladder, spleen, trachea, esophagus, goiter, thyroid and thymus glands, testes, ovary),

**experimental**

**2nd experimental**

3.19 4.75 3.01 3.60

2.64 3.70 2.65 2.77

0.76 2.09 2.23 0.93

2.46 1.75 0.58 1.05

**3rd experimental**

**88**

*Morphological composition of broiler chicken carcasses, %.*

It was found out that the yield of muscle tissue in the carcasses of broilers of the experimental groups during slaughter on the 31st day of rearing had a significant difference, exceeding the value of the analogs of the control group by 3.96, 4.31 and 9.28%, respectively (**Table 4**).

The higher meat yield from the carcasses of broilers of the 1st and 2nd experimental groups is mainly due to the better growth of the pectoral muscles (31.25 … 30.66%) and muscle tissue of the limbs (19.40 and 20.34%), in the 3rd group – of the femoral muscles (16.61%) and lower leg (8.92%), muscles of the wings and neck (6.26%). This was the result of the stimulating effect of the pretreated feed with the preparation with humates on the digestion processes and muscle tissue synthesis.

In the studied period of poultry slaughter the ratio of the mass of the carcass edible parts to the mass of inedible parts is 1.40; 1.36 and 1.32 respectively, which is higher than in the control group (1.09).

According to the results of poultry slaughter at the end of fattening, broilers in the experimental groups also exceeded the control ones, especially chickens that ate feed treated with a preparation with minimum humate content (1st experimental group). Their carcasses had high meat qualities - the ratio of edible parts to inedible ones was 1.93, muscles-to-bones ratio - 2.24, and the yield of pectoral muscles was 40.30%.

On the basis of experimental data, it can be stated that the inclusion of a dry feed additive based on unmodified microporous humic acids in the amount of 1 and 1.5 g per 1 kg of compound feed to the main diet of broiler chickens gives

a more stable positive effect, both in terms of slaughter indicators (the yield of semi-eviscerated and eviscerated carcasses), and in the production of the most valuable natural semi-finished products (breast, legs) due to the intensive growth of muscle tissue.
