RU2792900C1 - Way to increase the digestibility of nutrients - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to a method of feeding broiler chickens. The method is characterized by the fact that a feed additive is introduced into the main diet, including cattle bile, which is a dry powder mixture, at a dosage of 10 g/kg of feed per day during the entire period of growing broiler chickens.

EFFECT: use of the invention will increase the digestibility of feed nutrients, increase the productive qualities of poultry, and also reduce feed costs for gaining 1 kg of live weight.

1 cl, 1 ex, 5 tbl

Description

The invention relates to the field of agriculture, in particular to a method of feeding broiler chickens. The invention is a feed additive for broiler chickens, including bovine bile (cattle) in the main diet, the use of the claimed invention will increase the digestibility of feed nutrients and the productive qualities of poultry, as well as reduce feed costs for gaining 1 kg of live weight.

Animal fats and vegetable oils are used in broiler diets to increase feed energy and improve growth performance. However, the immature physiological function of the pancreas in broilers leads to a decrease in the production of bile acids and pancreatic lipase at an early age, which leads to a low level of fat digestibility [1].

Bile is a yellow-green aqueous solution, the main components of which are bile acids, cholesterol, phospholipids and the pigment biliverdin. Bile acids are synthesized from cholesterol and conjugated to either glycine or taurine in the pericentral hepatocytes of the liver, accumulate and concentrate in the gallbladder, and are secreted into the duodenum, where, playing an important role in improving the digestion of fats, bile salts, soluble fats and due to increase in absorption.

Bile acts as a biological steroid detergent that emulsifies and dissolves lipids, thus playing a critical role in fat digestion and absorption through the intestinal wall [2].

Recently, bile acids have attracted attention as food emulsifiers to increase fat digestibility and improve broiler productivity. The addition of bile acids to the diet of broilers significantly improves weekly weight gain, feed conversion rate, and carcass yield in broilers [3].

In this regard, the use of natural cattle bile as a feed additive, which provides an increase in the live weight of broiler chickens, is of great interest.

Known methods of growing broiler chickens by feeding bile salts, contributing to the effective improvement of broiler growth [4] and methods of using bovine bile in feeding young cattle, contributing to the prevention of diseases of the gastrointestinal tract [5]

The closest in the proposed application "Feed additive for broiler chickens" (prototype) [6].

The invention relates to the field of veterinary medicine, in particular to the development of biologically active additives for birds. Chickens up to 49 days of age were fed compound feed with a preparation based on dry bird bile, at a dose of 0.1% per 1 kg of feed. Feeding the drug contributed to an increase in live weight, average daily gain and a decrease in the cost of feed consumption [6].

Based on a review of foreign and domestic sources, as well as the experimental data obtained, we have proposed a method for growing broiler chickens by feeding dry cattle bile.

The objective of the invention is to obtain a highly efficient method of feeding broiler chickens, which increases the digestibility of nutrients in the body, and as a result, an increase in live weight gain.

The novelty of this method lies in the fact that due to the intake of an exogenous natural emulsifier, the digestibility of nutrients increases, which leads to an increase in the live weight of broiler chickens.

The essence of the proposed method.

The proposed method consists in a single daily supply of bile at a dosage of 5-10 g/kg of feed, during the entire period of poultry rearing.

An example of a specific use.

The studies were carried out on the basis of the Federal State Budgetary Scientific Institution Federal Scientific Center of the BST RAS in the conditions of the center for collective use (http://tskp-bst.rf.) on broiler chickens of the ARBOR ACRES cross. For the experiment, 45 heads of 7-day-old broiler chickens were selected, which were divided into 3 groups (n = 15) with an average live weight of 175.6 g by the method of analogues, both by age and weight characteristics. During the experiment, all experimental birds was under the same conditions.

The formation of basic diets (RR) for experimental birds during the research was carried out taking into account the recommendations of VNITIP [7]. The microclimate in the room met the requirements of VNITIP. Feeding of the experimental bird was carried out 2 times a day, accounting for eating - daily. Bird drinking was carried out ad libitum. Feeding of the experimental birds was carried out 2 times a day, accounting for feed - daily. Study design: the control group received the basic diet (RR); I experienced - OR + cattle bile at a dosage of 5 g/kg of feed per day; II experimental - OR + cattle bile at a dosage of 10 g/kg of feed per day (Table 1).

Cattle bile is a dry powder mixture manufactured by the All-Russian Scientific Research Institute of Butter and Cheese Making of the Federal State Budgetary Scientific Institution “Federal Scientific Center for Food Systems named after I.I. V.M. Gorbatov RAS".

According to the results of the study, it was found that the rate of increase in live weight of broiler chickens by 35 knocks of the experimental period in I and II experimental groups was higher than the control values by 1.84% and 3.37%, respectively. On the 42nd day of the experiment in group I, the growth rate was lower than the control values by 0.8%. While in group II, the growth rate increased by 4.53% (p<0.05) relative to the individuals of the control group. The results of the study of the dynamics of live weight are presented in table 2.

The safety of the livestock of the experimental and control groups throughout the entire experimental period is 100%. Feed costs per 1 kg of live weight gain in group I are higher than control values by 0.63%, in experimental group II the indicator was lower by 0.6%. Zootechnical indicators of growing broiler chickens are presented in table 3.

During the biochemical analysis of the blood of experimental broiler chickens, changes in the lipid fraction of serum were revealed (table 4). Thus, the content of triglycerides decreases in group I by 22.2%, in group II by 30.56% relative to control values. A statistically significant increase in cholesterol in the II experimental group by 11.63% (p<0.05) in relation to the control was revealed. High-density lipoproteins (HDL) significantly increased in group I compared to control, the difference was 21.2% (p<0.05), while in group II the indicators were at the control level. Significant changes in the blood parameters of broiler chickens indicate the activation of lipid metabolism.

In studies, it was found that the digestibility of crude fat in I and II experimental groups increased by 24.77% (p<0.05) and 30.61% (p<0.05) relative to peers in the control group. There is also a slight increase in the digestibility of crude protein (CP) in the II experimental group relative to the control by 4.28% (p<0.05) (table 5).

Thus, the proposed method of feeding a balanced diet with the addition of cattle bile at a dosage of 10 g/kg of feed per day helps to increase the digestibility of feed nutrients and the productive qualities of poultry, as well as reduce feed costs for gaining 1 kg of live weight.

Information sources:

1. Classen HL. Diet energy and feed intake in chickens. Animal Feed Science and Technology 2017; 233:13-21. DOI: 10.1016/j.anifeedsci.2016.03.004.

2. Begley M, Gahan CG, Hill C. The interaction between bacteria and bile. FEMS microbiology reviews. 2005 Sep 1;29(4):625-51. doi.org/10.1016/j.femsre.2004.09.003.

3. Upadhaya SD, Yun KS, Zhao PY, Lee IS, Kim IH. Emulsifier as a feed additive in poultry and pigs-a review. Animal Nutrition and Feed Technology 2019;19(2):323-336.

4. Arshad, M. A., Bhatti, S. A., Hassan, I., Rahman, M. A., & Rehman, M. S. (2020). Effects of bile acids and lipase supplementation in low-energy diets on growth performance, fat digestibility and meat quality in broiler chickens. Brazilian Journal of Poultry Science, 22.

5. Patent No. 2086244 C1 Russian Federation, IPC A61K 35/00. Method for preparing a preparation for animals from plant or animal raw materials: No. 93025319/13: Appl. 04/27/1993: publ. 08/10/1997 / N. A. Malkov, V. A. Ryabukha, B. P. Shevchenko, M. V. Andreev; applicant Blagoveshchensk Agricultural Institute. -EDN RMQJAV.

6. Patent No. 2268608 C2 Russian Federation, IPC A23K 1/00. Dry preparation of chicken bile (BAA-"STIKFEL") and method for its production: No. 2003132142/13: Appl. 11/05/2003: publ. January 27, 2006 / V. G. Shol, V. I. Filonenko, A. V. Shol [and others]; applicant ONO "Zagorsk EPH VNITIP" State Scientific Institution VNITIP of the Russian Agricultural Academy, Virological Center of the Research Institute of Microbiology of the Ministry of Defense of the Russian Federation. - EDN ZOYXCX.

7. Feeding poultry / V.I. Fisinin, I.A. Egorov, T.M. Okolelova, Sh.A. Imangulov Sh.A. - Sergiev Posad, 2010. - 375 p.

Claims (1)

A method of feeding broiler chickens, characterized in that a feed additive is introduced into the main diet in the form of cattle bile, which is a dry powder mixture, while the bile is administered at a dosage of 10 g/kg of feed per day during the entire period of growing chickens. broilers.

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