RU2179803C1 - Preparation to prevent technological stress in cattle - Google Patents

Abstract

FIELD: agriculture, animal science. SUBSTANCE: the method suggested deals with application of Cresyval organosilicon preparation at the dosage of 20-50 mg/kg body weight/animal daily, 7 d before stress. EFFECT: decreased losses of both live body weight and carcass weight in experimental animals. 4 tbl

Description

 The invention relates to agriculture, in particular to livestock, and can be used to reduce the loss of meat products and maintain its quality indicators in young cattle, due to technological stress factors during slaughtering of animals.

 In recent years, in our country, in veterinary practice, to prevent stressful situations arising from the fattening and sale of livestock, organosilicon compounds belonging to synthetic adaptogens have been used that have a high stimulating effect on a variety of biological objects (1), copyright certificate, 541473, cl. A 23 K 1/22.

 It is also known to use migugen from the same group of drugs as a means to prevent technological stress in cattle (2). Giving this drug had a positive effect on reducing growth losses during rearing of young animals, significantly reduced its arousal after technological stresses. However, there is no choice among the pharmacological substances of this group.

 The essence of this invention lies in the fact that as a tool for the prevention of technological stress in cattle for the first time, another organosilicon compound "cropped" representing the complex content of synthetic crezation and mival preparations in a ratio of 1: 1 was used.

 It is known to use cresival as an animal growth stimulator (3) and a component of a feed additive for young cattle (4).

 The use of this drug as a means of reducing psychological stress caused by pre-slaughter preparation of animals (transportation + fasting) is currently unknown and its use for a new purpose has become possible after establishing its effective effect on the behavioral reactions of animals and reducing body weight loss during technological stresses.

 An example of a specific implementation. The drug was tested in order to identify its anti-stress effect during technological stresses in beef production in 60 gobies of Simmental breed, divided into six groups by the principle of analogues, at the Bykovsky state farm technical school in the Volgograd region according to the experimental design (see table 1a) .

 The difference in the groups was that 7 days before the animals were sold to the meat processing plant, they were additionally fed migugen or cut in accordance with the experimental design. In this case, the dose of migugen was taken from the previously recommended one as optimal for reducing stress in young cattle, and sliced in the studied variants, the drug was fed with concentrates. Transportation distance - 160 km.

 Clinical indicators. It was established that during the period of exposure to technological stress factors (weighing, loading, transportation, unloading), animals experienced anxiety, muscle tremors, dilated pupils, etc. At the same time, their body temperature increased, their pulse and respiration increased. Clinical indicators of experimental gobies are presented in table. 1.

In the control group, during transport in bulls, body temperature increased by 0.4 ^o C (P <0.05), heart rate by 18.7% (P <0.001) and respiration by 13.1% (P <0 , 05).

In animals treated with drugs, there was also a slight change in clinical indicators. However, this difference was less significant and in most cases unreliable. It was statistically significant only in the II and III experimental groups: by body temperature 0.2-0.4 ^o C (P <0.05), pulse rate of 16.3% (P <0.001) and respiratory rate of 8.0 -9.1% (P <0.05).

 Hematological indicators. During the transportation of animals, the morphological and biochemical composition of blood changed to a marked extent, which is characteristic of increased protein, lipid, and carbohydrate metabolism in the body. At the same time, the content of formed elements and the concentration of hemoglobin increased. However, in general, hematological parameters in experimental animals did not go beyond the physiological norm (Table 2).

 During the period of transportation of gobies of the control group in the blood, the number of red blood cells increased by 14.9% (P <0.05): I experimental - by 5.4%, II - 10.2% (P <0.05), III - by 6.7%, IV - by 5.5% and V - by 2.7%, white blood cells by 10.0, respectively; 1,2; 4.9; 1.2: 2.4 and 2.4%, total protein 9.1 (P <0.05); 3.3 (P <0.05); 7.9 (P <0.05) 6.1 (P <0.05); 3.1 and 3.0%.

 The increase in the formed elements and whey protein occurred not only due to the activation of metabolic processes in the body, but as a result of dehydration (loss of fluid) of the animal body tissues. This is evidenced by the value of hematocrit, which increased after transportation of experimental young animals in all groups, but most significantly (by 13.2, P <0.01) - in the control.

 It should be noted that during the period of stress, the lipid and carbohydrate metabolism increased in the animal organism, as a result of which the level of lipids and sugar in the blood increased (in the control group, by 15.5 and 24.1%, respectively).

 Feeding youngsters the tested drugs as a whole did not completely relieve their stress state, but only weakened its effect. Their excitement markedly decreased, and their clinical condition returned to normal compared to control.

 Reducing the loss of live and slaughter mass of experimental bulls. Giving migugen and cutting experimental animals allowed to reduce the loss of live weight of experimental bulls along the way depending on groups - from 25.8 to 30.8 kg or 5.8-6.93% (Table 3). Moreover, the loss of production in control animals was greater than in peers of the experimental I by 4.3 kg (16.2%), II - by 2.0 (6.9%), III - by 2.8 kg (10.0 %), IV - by 4.5 kg (17.1%) and V experimental - by 5.0 kg (19.4%).

 Losses during fasting exposure amounted to 17.2-18.0 kg, that is, there were no significant differences between the compared groups in this indicator.

 In general, the greatest loss of live weight was observed in gobies of the control group - 10.80%, which is more than in young animals I, II, III. IV and V experienced respectively at 0.87; 0.27; 0.47; 0.89 and 0.92% or 3.7; 1.3; 2.0; 3.8 and 4.1 kg.

 Consequently, migugen at a dose of 40 mg / kg live weight (experimental I) and cut in the amount of 40 and 50 mg / kg LM (IV and V experimental groups) have the greatest effect on reducing the live weight loss of gobies during transport stress.

 It should be noted that the use of the tested drugs as anti-stress in cattle breeding can slightly increase the slaughter yield. In particular, in animals of the experimental groups, it was higher by 0.25-0.47%, which is explained by both lower consumption of nutrients during stressful periods, and a decrease in the amount of confiscated by 0.6-0.9 kg for carcasses, since the experimental animals were calmer and less injured.

 Economic efficiency. The use of migugen and cut as anti-stress drugs in the pre-slaughter preparation of young cattle is economically profitable, as evidenced by the economic assessment of the use of migugen and cut as anti-stress drugs (based on the first head), presented in Table. 4.

 The inclusion of tested drugs in the diet was accompanied by additional costs. However, they not only paid off by receiving additional products by reducing the loss of live weight during transportation and pre-slaughter aging, but also allowed to increase profits from 11 to 41 rubles. per 1 head. The payback period for the use of drugs was 2.10-3.08 rubles. for each invested ruble. At the same time, the greatest economic effect was achieved by feeding migugen at a dose of 40 mg / kg body weight and slicing - 40-50 mg / kg.

 Thus, the conducted studies indicate that, along with migugen, as a tool for the prevention of technological stress in cattle from the group of organosilicon compounds, it was possible to use crozil 7 days before stress at a dose of 20-50 mg / kg body weight per head per day . The most optimal and effective dose is 40-50 mg / kg of fat. It should be noted that crozil not only retains the positive qualities of migugen, but also surpasses it in the payback of the drug.

Sources of information
1. SU aut. St. 541473, cl. A 23 K 1/22, 1997.

 2. SU aut. St. 1740000, class A 61 K 31/44, A 23 K 1/00, 1992.

 3. Levakhin V.I. Kovzalov N.I., Galiev B.Kh., Pribylov V.D., Sizov S.M. The effect of cropping on the growth rate of calves. Sat scientific works of VNIIMS, vol. 48, Orenburg, 1995, p. 87-90.

 4. SU patent 2105496, cl. A 23 K 1/16, 1998.

Claims (1)

 The use of organosilicon drug was sliced as a means for the prevention of technological stress in cattle.

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