The use of Quercus cortex extract and chlortetracycline in the diet: feed digestibility, slaughter traits and the content of chemicals in organism of broilers

In the poultry industry, feed additives with positive effects on the condition of the poultry are constantly used. Antimicrobials are used for this purpose. However, the indiscriminate use of antibiotics accelerates the spread of antibiotic resistance among bacteria. Hence, researchers have increased interest in finding alternative feed additives. Plant extracts are of considerable interest in this matter as they have a wide range of biological properties including antibacterial activity. Phytobiotics, have been found to increase productivity, feed conversion ratio, safety and meat quality. Among the potential phytobiotics, oak bark extract (Quercus cortex) should be emphasized, the activity of which is associated with the content of more active substances. With this in mind, the purpose of this work was formulated to study the effect of Quercus cortex extract and the feed antibiotic Biovit 200 based on 20% chlorotetracycline on feed digestibility, its slaughter properties and the content of chemicals in the body of broilers.
The results obtained during the study suggest that the use of Quercus cortex extract (at a dose of 0,2 ml/kg) both alone and in combination with Biovit 200 (at a dose of 0,63 g/kg w.m./day contributed to an increase in the EIP index, digestibility coefficients. An excess in slaughter yield in I, II and III groups over the control group was recorded.

1. Shatskikh, E. V. Digestibility of feed nutrients and meat productivity of broiler chickens in various variants and doses of feeding a complex feed additive / E. V. Shatskikh, D. M. Galiev // Agrarian Bulletin of the Urals.2017:10(164):56-62. URL: https://www.elibrary.ru/item.asp?id=32299254 (In Russ.)

2. Agyare, C. Antibiotic Use in Poultry Production and Its Effects on Bacterial Resistance / C. Agyare, V. Etsiapa Boamah, C. Ngofi Zumbi, F. Boateng Osei // Antimicrobial Resistance - A Global Threat. IntechOpen. 2019. – DOI 10.5772/intechopen.7937. URL: https://www.researchgate.net/publication/330292444_Antibiotic_Use_in_Poultry_Production_and_Its_Effects_on_Bacterial_Resistance_Antibiotic_Use_in_Poultry_Production_and_Its_Effects_on

3. Duskaev, G. K. The effect of purified Quercus cortex extract on biochemical parameters of organism and productivity of healthy broiler chickens / G. K. Duskaev, N. M. Kazachkova, A. S. Ushakov, B. S. Nurzhanov, A. F. Rysaev // Veterinary World. 2018:11(2):235-239. – DOI 10.14202/vetworld.2018.235-239. URL: https://pubmed.ncbi.nlm.nih.gov/29657410

4. Hammod, Ali J. The Effect of Adding Oak Bark Powder to the Diet on Some Productive and Immunological Characteristics of Broiler Chicks / Ali J. Hammod, Aqeel Y. Alshukri, Ammar H. Areaaer, Khalil A. Alfertosi, Ali F. Alyasari // International Journal of Poultry Science.2019:18:7-13. – DOI 10.3923/ijps.2019.7.13. URL: https://scialert.net/fulltext/?doi=ijps.2019.7.13

5. Duskaev, G. K. Changes in the productive qualities of broiler chickens against the background of an enzyme-containing diet and Quercus cortex extract / G. K. Duskaev, N. M. Kazachkova, A. S. Ushakov, B. S. Nurzhanov, A. F. Rysaev, Sh. G. Rakhmatullin, N. I. Ryabov // Animal husbandry and feed production. 2019:102(2):125 135. DOI 10.33284/2658 3135 102 2 125.URL: https:// cyberleninka.ru/article/n/izmenenie produktivnyh kachestv tsyplyat broylerov na fone enzimosoderzhaschey-diety-i-ekstraktaquercus-cortex (In Russ.)

6. Fisinin, V. I. Changes in immunological and productive parameters in broiler chickens under the influence of biologically active substances from oak bark extract / V. I. Fisinin, A. S. Ushakov, G. K. Duskaev, N. M. Kazachkova, B. S. Nurzhanov, Sh. G. Rakhmatullin, G. I. Levakhin // Sel'skokhozyaistvennaya biologiya. 2018:53(2):385 392. DOI 10.15389/agrobiology.2018.2.385rus. URL: https://www.elibrary.ru/item.asp?id=34995589 (In Russ.)

7. Bagirov, V. A. The inclusion of Quercus cortex extract in the diet of broilers changes their slaughter parameters and biochemical / V. A. Bagirov, G. K. Duskaev, N. M. Kazachkova, Sh. G. Rakhmatullin, E. V. Yausheva, D. B. Kosyan, Sh.A. Makaev, H. B. Dusaeva // Sel'skokhozyaistvennaya biologiya. 2018:53(4);799-810. – DOI 10.15389/agrobiology.2018.4.799rus. URL: https://cyberleninka.ru/article/n/vklyuchenieekstrakta-quercus-cortex-v-ratsion-broylerov-izmenyaet-ih-uboynye-pokazateli-ibiohimicheskiy (In Russ.)

8. Kavtarashvili, A. Sh. Russian indices of efficiency of egg and poultry meat production / A. Sh. Kavtarashvili // Poultry and poultry products. 2015:1:62-65. URL: https://old.vniipp.ru/images/statya/0115/st62.pdf (In Russ.)

9. Methods of scientific and production research on feeding poultry / И. A. Egorov, V. A. Manukyan, T. N. Lenkova – Sergiev Posad: VNITIP, 2013:52. URL: http://www.vnitip.ru/books/izdaniya_15.html (In Russ.)

10. Methodical recommendations for anatomical cutting of carcasses and organoleptic evaluation of meat and eggs quality of poultry and egg morphology / V. S. Lukashenko, M. A. Lysenko, T. A. Stoller, A. Sh. Kavtarashvili, O. A. Lukashenko, V. V. Dychakovskaya, A. I. Kalashnikov – Sergiev Posad: VNITIP, 2001:27. URL: https://elibrary.ru/item.asp?edn=sdoljj (In Russ.)

11. GOST 31675-2012 Methods of determination of crude fiber content using intermediate filtration. URL: https://docs.cntd.ru/document/1200097397 (In Russ.)

12. GOST 13496.15-2016 Methods for determining the mass fraction of fat. URL: https://internet-law.ru/gosts/gost/63036 (In Russ.)

13. GOST 13496.4-2019 Methods of determination of nitrogen and crude protein content. URL: https://docs.cntd.ru/document/1200166800 (In Russ.)

14. GOST 31640-2012 Methods of determining the content of dry matter. URL: https://docs.cntd.ru/document/1200095394 (In Russ.)

15. GOST 9793-2016. Methods of moisture determination. URL: https://docs.cntd.ru/document/1200144231 (In Russ.)

16. GOST 23042-2015. Methods for the determination of fat. URL: https://docs.cntd.ru/document/1200133107 (In Russ.)

17. GOST 25011-2017. Methods for determination of protein. URL: https://docs.cntd.ru/document/1200146783 (In Russ.)