RU2446813C1 - Method for prevention of cattle technological stresses - Google Patents

Abstract

FIELD: medicine.

SUBSTANCE: invention relates to veterinary science. A method involves in the fact that the biological preparation lactoenterol 50 g per a head is introduced in animals before stress exposure.

EFFECT: method provides reduced loss of animal products.

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Description

The invention relates to agricultural production, in particular to livestock, and can be used to reduce the loss of meat products under technological stresses, for example during transportation and slaughter aging of cattle.

It is known that during technological stresses arising during the periods of growing, fattening and selling livestock, more than 30% of meat products are lost (1). Therefore, in practice, various pharmacological agents - tranquilizers are used to reduce the stressful effect on the animal organism; thyrostatic drugs, antioxidants, antibiotics, organosilicon compounds and others (2, 3). However, in most cases, they have a short-lived effect, scarce and expensive.

It is known to use biopreparation of fodogrizin as an prevention of stress in animals (2). It is effective only in case of feed stress and therefore has not been widely used.

The use of a biological product lactobifadol is also known. However, there is some inhibition of bacteria due to the possible multiplication of opportunistic microorganisms (5, 6).

The essence of the invention lies in the fact that for the first time as a means for the prevention of stress in cattle, a new probiotic “Lactoenterol” was used, the strain composition of which was developed and proposed by Biotechnological company “Component” LLC (Lactobacillus acidophifus LU-1 1 * 10 ⁶ cells per 1 g of the drug and Streptocjccus faecium 80 * 10 ⁷ cells in 1 g of the drug).

Lactoenterol does not cause complications and side effects, including when using doses exceeding the recommended ones. There are no contraindications.

The drug is made from living bacteria, both strains take root well in the intestines of animals, exhibit pronounced antagonism against pathogenic and conditionally pathogenic microbes, including esheichia, salmonella, staphylococcus, protea, etc., synthesizes B vitamins, nicotinic and folic acids, biotin, vitamins K and C, amino acids, including essential ones.

The drug lactoenterol meets the technical conditions and is made in accordance with the technical regulations approved in the prescribed manner. According to organoleptic and physico-chemical indicators, meets the requirements. This is a homogeneous, loose, bran-shaped or flour powder, the moisture content is not more than 8%, the amount of carotenoids is not less than 0.24 mg per 1 g, the amount of beta-carotene is not less than 0.1 mg per 1 g, mesophilic aerobic and facultative anaerobic microorganisms are not less than 30 thousand in 1 g.

The drug is produced in dry form using a new technology that has no analogues in Russia, the technological regulations exclude the use of expensive equipment, which significantly reduces its cost.

During the experimental verification of the claimed drug, we followed the instructions for the dosage of the antistress drug lactobifadol, according to which it ranged from 50 to 100 g / goal. Doses of the drug to test lactoenterol from 30 to 70 g / goal. They were taken in comparison with the previously identified optimal dose of the drug lactobifadol 50 g / goal.

Concrete example

We selected 35 bull-calves of the Kazakh white-headed breed, of which seven groups were formed by the principle of analogues - control and six experimental. The differences consisted in the fact that, in contrast to the control, animals of group I a month before slaughter were additionally fed with lactobifadol at a dose of 50 g / goal, and groups II, III, IV, V and VI - biological product lactoenterol, respectively, at a dose of 30, 40, 50 , 60 and 70 g / goal. The conditions of detention, the level of feeding and the dietary structure of experienced young animals of all groups were identical. At the meat processing plant, animals were transported in specially equipped vehicles. Transportation distance - 30 km.

Feeding animals lactoenterol contributed to the reduction of total loss of live weight during transportation and pre-slaughter aging in group IV to 31.6 kg, while in the control, I, II, III, V and VI, respectively, 40.1; 34.4; 37.6; 35.0; 31.8 and 34.7 kg. Indicators to reduce the loss of meat products during transport stress and pre-slaughter aging are presented in table 1.

When fed a calf antistress test drug at a dose of 50 g / goal, the decrease in live weight loss was more significant than in other groups.

Feeding experimental animals lactoenterol allowed to increase the mass of carcass and internal fat in animals of II, III, IV, V and VI of the experimental groups compared with the control, respectively, 2.4 kg (1.1%); 4.8 (2.1%); 9.3 (4.1%); 8.5 (3.8%); 7.5 kg (3.3%) and by 0; 0.2 kg (1.7); 0.7 (6.0%); 0.7 (6.0%); 0.6 kg (5.1%). The corresponding indicators for group IV were higher by 1.1% and by 6% compared with the experimental group I (table 2).

In the bull-calves of the experimental groups, especially IV, V, and VI, there were also fewer confiscations during the processing of carcasses, which indicates their better slaughter preparation.

Research results showed that the stress state. caused by transportation, affects the clinical indicators in experimental animals in the form of anxiety, muscle tremors, fever, changes in heart rate and respiration (Table 3).

In transporting calves, the body temperature increased by 0.4 ° C (P <0.05), heart rate by 23.7% (P <0.001), and respiratory rate by 32.0% (P <0.001) .

When animals fed lactobifadol and lactoenterol, these changes in clinical indicators differed to a lesser extent, especially in groups IV, V and VI. So, the body temperature of animals of these groups practically did not increase, however, the pulse rate increased, but only by 4.8-5.7%, and the respiratory rate by 7.6-12.7%.

The use of lactoenterol as an anti-stress drug is economically beneficial (Table 4) and allows you to get additional products in the amount of 900-1116 rubles / goal. The greatest economic effect was achieved by feeding the drug at a dose of 50 g / goal.

Thus, to reduce product losses during transportation and pre-slaughter exposure, it is more advantageous to use lactoenterol at a dose of 50 g / head.

Information sources

1. Fomichev Yu.P., Levantin D.L. Pre-slaughter stresses and beef quality. - M .: Rosselkhozizdat, 1981. - 166 p.

2. Sizov F.M., Levakhin V.I. Stress correction in young cattle. - Orenburg, 1999 .-- S.129-130.

3. Lyapin O. L., Levakhin V. I., Lyapina V. O. A method for the prevention of technological stress in young cattle. Patent RU No. 2147788 C2, 2000

4. RU No. 22251261, A01K 67/02. Means for the prevention of transport stress in young cattle (analogue).

5. Pilate T.L., Ivanov A.A. Biologically active food additives. - M.: Avvalon, 2002.

6. Tugelyan V., Spirnchev VB and other micronutrients in the nutrition of a healthy and sick person. - M .: Kolos, 2002.

table 2 The results of the control slaughter of experimental animals Indicator The control Lactobifadol, 50 g / goal. Lastoenterol, g / goal thirty 40 fifty 60 70 Slaughter mass, kg 416.3 423.11 419.4 421.2 426.8 426.0 424.0 Weight of fresh carcass, kg 225.3 232.0 227.7 230.1 234.6 233.8 232.8 Mascara yield,% 54.12 54.77 54.29 54.63 54.97 54.88 54.90 Mass of internal fat, kg 11.7 12.0 11.7 11.9 12,4 12,4 12.3 The output of internal fat,% 2.81 2.83 2.79 2.82 2.90 2.91 2.90 Slaughter weight, kg 237.0 244.0 239.4 242.0 247.0 246.2 25.1 Slaughter yield,% 56.93 57.60 57.08 57.45 57.87 57.79 57.80 Confiscated kg 3.8 2.6 3.4 2.9 2.5 2,4 2,4

Table 3 Clinical indicators in experimental animals Indicator The control Lactobifadol, 50 g / goal. Lactoenterol, g / goal. thirty 40 fifty 60 70 Before transportation Body temperature, ° C 38.8 38.8 38.8 38.8 38.8 38.8 38.8 Heart rate in minutes 69.3 68.7 69.0 68.7 69.0 68.0 68.7 Respiratory rate in minutes 29.0 29.7 29.3 30,0 29.0 29.7 30,0 After transportation Body temperature, ° C 39.2 39.0 39.1 39.1 39.0 38.9 38.9 Heart rate in minutes 85.7 74,4 84.0 79.3 73.0 73.0 72.0 Respiratory rate in minutes 38.3 34.2 37.7 35.0 32,7 33.0 32.3

Table 4 Cost-effective use of antistress drugs during transportation and slaughter aging Group Indicator Received additional products, kg Cost of additional products, rub. The cost of the spent drug, rub. Additional profit, rub. Payback of the drug The control I experienced 7.0 840 225 615 3.73 II experienced 2,4 288 136 153 2.13 III experienced 4.8 576 180 396 3.20 IV experienced 9.3 1116 225 891 4.96 V experienced 8.5 1020 270 750 3.78 VI experienced 705 900 315 585 2.85

Claims (1)

A method of reducing production losses during transportation and pre-slaughtering of cattle, characterized in that animals are fed a biological product “Lactoenterol” at a dose of 50 g per head before stress.