Dietary Fiber and Lysolecithin Supplementation in Growing Ducks: Effect on Performance, Immune Response, Intestinal Morphology and Lipid Metabolism-Regulating Genes

Abstract

The impact of different dietary fiber (DF) levels (with or without lysolecithin supplementation) on growth performance, immune response, expression of some lipid regulating genes and intestinal morphology was assessed in 408 Pekin ducks for 2 months. Soybean hulls were added to the diet to provide four different levels of DF: 2.4 (control diet), 3.8, 5.3, and 6.7% for the first four groups, respectively, while groups 5 to 8 fed the same four levels of DF with lysolecithin addition. Increasing dietary DF non-significantly reduced (p > 0.05) the ducks’ body weight (BW). However, ducks fed on 3.8% DF showed higher BW and improved feed conversion ratio. Lysolecithin supplementation with different DF did not support growth performance. Increasing DF with or without lysolecithin had no effect on serum lipid profile (p > 0.05). However, serum high-density lipoproteins (HDL) concentration was significantly increased with increasing fiber level in diet (p ˂ 0.05). Increasing DF with or without lysolecithin addition increased serum antioxidant activities and improved the immune response in terms of phagocytic and lysozyme activities. The DF level reduced the duodenal villi length and mucosal layer thickness while increased the villi width (p ˂ 0.05). Lysolecithin supplementation to diets ameliorated adverse effects on intestinal morphology. Moreover, DF level in ducks’ diet with or without lysolecithin significantly upregulated the expression of fatty acid synthase and lipoprotein lipase (p ˂ 0.05). Thus, it could be concluded that ducks fed on soybean hulls containing a diet at the level of 4.5% and providing 3.8% fiber level with or without lysolecithin showed the best performance.

Effect supplementation of black soldier fly larvae oil (Hermetia illucens L.) calcium salt on performance, blood biochemical profile, carcass characteristic, meat quality, and gene expression in fat metabolism broilers

“…Serum lipid profiles, including TG, LDL-cholesterol, HDL-cholesterol, and total cholesterol, serve as markers for assessing lipid metabolism within the body ( El-katcha et al, 2021 ). In the current study, the serum HDL-cholesterol level was significantly increased by dietary supplementation with BSFLO-Sca at 3%.…”

Effect of fiber source diet supplement on growth performance, carcass quality, oxidative stress and intestinal morphology in Thai native chicken (Pradu Hang dum)

“…In addition, performance indices were calculated as following: BWG = final BW-initial BW, Feed conversion ratio (FCR) = FI/BWG, ADG = (Final BW -Initial BW) / Days on test, FCR was also calculated, then use the production efficiency data to calculate the Feed cost per gain (FCG) = FI × cost of feed (THB/kg). Mortality and culling rates as well as abnormal symptoms were recorded immediately at the notice (El-Katcha et al, 2021). supplemented with the Napier grass at 50 g/kg, 100 g/kg (NG 5%, NG 10%) of diet, respectively.…”

“…After blood collection, birds were dissected and about 2 cm segment from the duodenum, jejunum, ileum were trimmed and used for morphological indices. Samples of tissue were washed with saline then fixed in formalin 10% for 48 hours (El-Katcha et al, 2021) After fixation, the tissue specimens underwent the tissue processing that consisted of 3-step process such as dehydration, clearing, and impregnation with paraffin wax. Paraffin embedded tissues were cut into 5 µm thick sections (3 cross sections/sample) using a rotary microtome and placed on glass slides.…”

Characterization of microbiota and secretory Ig-A in the domestic duck (Anas platyrhynchos) small and large intestine

“…In addition, a high bacteria composition in the large intestine may cause by the undigested natural fiber. That fiber provides long-chain sugar used to metabolize most mutual bacteria (El-Katcha et al 2021).…”