Abstract

This study evaluated the effect of Boswellia serrata, (BS) on growth performance, carcase traits, antioxidant and immune responses, digestive enzymes and caecum microbiota of broiler chickens. A total of 120 one-day-old Ross 308 chicks were randomly allotted into four treatment groups, each of five replicates. The 1^st group was fed on a basal diet only and served as control. The 2^nd, 3^rd and 4^th groups were fed the basal diet plus 0.5, 1 and 1.5 g BS/Kg diet, respectively. Body weight (BW) at 42 days old and daily body weight gain (DBWG) during (1–42 days) was linearly (<0.0001) enhanced with high BS levels compare with the control. The addition of BS to diets linearly and quadratic decreased feed intake, improved feed conversion ratio and digestion coefficients for diet ingredients, and most carcase traits compared to the control. The different levels of BS in chicks' diets linearly increased globulin, total antioxidant capacity (TAC), superoxide dismutase (SOD) and digestive enzymes (amylase and lipase). While, the total cholesterol (TC), low-density lipoprotein (LDL) and malondialdehyde (MDA) were linearly and quadratic reduced in all experimental groups than the control. Total bacteria, total fungi and E. coli were linearly reduced in broiler chicks fed the diet supplemented with BS compared with control. It could be concluded that adding BS to broiler diets positively promoted performance, carcase traits, blood measurements, digestive enzymes, immunity organs, antioxidant parameters and caecal microorganisms.

• Highlights

• Phytobiotics have a beneficial influence on poultry.

• Boswella serrata contains a lot of active ingredients.

• It is expected to affect performance and health positively.

摘要

这项研究评估了乳香（BS）对肉鸡生长性能，performance体性状，抗氧化和免疫反应，消化酶和盲肠微生物群的影响。将总共​​120只1天大的Ross 308小鸡随机分配到4个治疗组中，每组5个重复。1个^第一组喂食仅一个基础饮食和作为对照。的2^次，3^次和4^次各组分别喂基础饮食和0.5、1和1.5g BS / Kg饮食。与对照组相比，高BS水平可使42天大的体重（BW）和（1-42天）的每日体重增加（DBWG）线性增加（<0.0001）。与对照组相比，在日粮中线性和二次添加BS减少了采食量，提高了饲料原料的饲料转化率和消化系数，并改善了大多数car体性状。雏鸡日粮中不同水平的BS线性增加球蛋白，总抗氧化能力（TAC），超氧化物歧化酶（SOD）和消化酶（淀粉酶和脂肪酶）。而在所有实验组中，总胆固醇（TC），低密度脂蛋白（LDL）和丙二醛（MDA）均呈线性和二次下降趋势。总细菌，总真菌和与对照组相比，饲喂添加了BS的日粮的肉鸡的大肠杆菌呈线性下降。可以得出结论，在肉鸡日粮中添加BS可以积极地提高肉鸡的生产性能，case体性状，血液测量，消化酶，免疫器官，抗氧化剂参数和盲肠微生物。

• 强调

• 植物抗生素对家禽有有益的影响。

• 乳香锯缘青蟹含有很多有效成分。

• 预计它将对性能和健康产生积极影响。