Growth performance, blood lipids, and fat digestibility of broilers fed diets supplemented with bile acid and xylanase

Mohammed H Alzawqari; Mustafa Shukry Atta; Abdallah Metwally; Shaimaa Selim; Mohammad A M Wadaan; In Ho Kim; Sungbo Cho; Hossam M Eltahan; Mahmoud Alagawany; Rashed A Alhotan; Ali R Al Sulaiman; Elsayed Osman Hussein; Ahmed A Saleh

doi:10.5194/aab-66-451-2023

Growth performance, blood lipids, and fat digestibility of broilers fed diets supplemented with bile acid and xylanase

Arch Anim Breed. 2023 Dec 21;66(4):451-460. doi: 10.5194/aab-66-451-2023. eCollection 2023.

Authors

Affiliations

¹ Department of Poultry Production, Faculty of Agriculture, Kafrelsheikh University, Kafr El-Sheikh 333516, Egypt.
² Department of Animal Production, Faculty of Agriculture and Food Sciences, Ibb University, Ibb 70270, Yemen.
³ Department of Physiology, Faculty of Veterinary Medicine, Kafrelsheikh University, Kafrelsheikh 33516, Egypt.
⁴ Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, Zagazig University, Zagazig 44511, Egypt.
⁵ Department of Nutrition and Clinical Nutrition, Faculty of Veterinary Medicine, University of Menoufia, Shibin El-Kom 32514, Egypt.
⁶ Department of Zoology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.
⁷ Animal Resource and Science Department, Dankook University, Cheonan 31116, Republic of Korea.
⁸ Animal Production Research Institute, Agriculture Research Center, Ministry of Agriculture, Dokki 12611, Egypt.
⁹ Poultry Department, Faculty of Agriculture, Zagazig University, Zagazig 44519, Egypt.
¹⁰ Department of Animal Production, College of Food & Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh 11451, Saudi Arabia.
¹¹ Environmental Protection Technologies Institute, Sustainability and Environment Sector, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia.
¹² Al-Khumasia For Feed and Animal Products Riyadh - Olaya - Al Aqareyah 2 - Office 705 P.O. Box 8344, Riyadh 11982, Saudi Arabia.

Abstract

This study aimed to show the effect of bile acid (BA) and xylanase (Xyl) supplementation on the growth, fat digestibility, serum lipid metabolites, and ileal digesta viscosity of broilers. A total of 720 1 d old male broilers were allocated to one of nine treatments with four replicates in each under a factorial design arrangement of three levels of BA (0 %, 0.25 %, and 0.50 %) and three levels of Xyl (0 %, 0.05 %, and 0.10 %) supplementation. The duration of the experiment was 35 d (7-42 d). Growth performance, blood lipids, fat digestibility, and ileal digesta viscosity were determined. The experimental treatments did not affect feed intake (FI) and weight gain (WG). Supplementation of BA or Xyl did not significantly ameliorate the feed conversion rate (FCR) ( $p < 0.05$ ). The addition of BA linearly increased fat digestibility. At 7-21 d of age, the addition of BA or Xyl had a significant ( $p < 0.05$ ) increase in serum cholesterol (Chol) but no significant difference for other serum lipid parameters in broiler chickens fed with Xyl in the starter and grower periods. However, the supplementation of 0.5 % BA at 7-21 d of age significantly increased the Chol and low-density-lipoprotein (LDL) levels. The results of this trial revealed that the supplementation of xylanases had a great effect on the degradation of arabinoxylan from wheat, which led to a relatively greater reduction in ileal digesta viscosity; it was also found that supplementation of BA significantly increased the concentration of serum lipid metabolites, whereas BA and Xyl supplementation linearly increased the fat digestibility of the birds fed wheat and tallow diets.