Effect of dietary flaxseed meal supplemented with dried tomato and grape pomace on performance traits and antioxidant status of laying hens

Effects of Using Inulin and Grape Pomace in Broiler Diets on Performance, Carcass Yield, Intestinal Viscosity, Immunity, and Antioxidant Status

“…Shi et al (2003) reported that due to the polyphenols in grape pomace, grape pomace has an antioxidant effect 20 times more than vitamin E and 50 times more than vitamin C. Ebrahimzadeh et al (2018b) also reported that grape pomace at 5% and 7.5% levels caused a significant increase in plasma SOD and GPX levels compared to the control group in broilers. However, Tufarelli et al (2021) determined that 5% grape pomace did not affect SOD and GPX in laying hens, similar to our study. In the present study, SOD and GPX activities as compared to CON, did not change in the IN and INGP groups.…”

Effects of Using Processed Amaranth Grain with and without Enzyme on Performance, Egg Quality, Antioxidant Status and Lipid Profile of Blood and Yolk Cholesterol in Laying Hens

“…A literature review of enzyme preparations used in the poultry feed industry shows that supplementing poultry diets with multiple enzymes can improve the activity of lipase and chymotrypsin enzymes in the gastrointestinal tract through synergism with endogenous enzymes [ 31 ]. It can also reduce and degrade antinutrients, such as non-starch polysaccharides [ 62 ], and reduce viscosity [ 63 ] to increase the availability of important nutrients, such as starch, protein and minerals, within the cell walls of highcrude fiber to ultimately improve protein digestibility and metabolizable energy [ 40 , 64 , 65 ].Baghban-Kanani et al [ 31 ], Alam et al [ 66 ] and Rutherfurd et al [ 67 ] reported that supplementing laying hen diets with enzyme additives resulted in increased egg weight due to reduced viscosity; separation of large molecules; and improved availability of starch, protein, fat and metabolizable energy, which is consistent with the findings of the present study.…”

“…Those researchers believe that some known and specific compounds unique to amaranth can limit the rate of production of the liver enzyme 3-hydroxy-3-methylglutaryl coenzyme-A (HMG-CoA) reductase, resulting in reduced cholesterol. In general, many edible plants and even byproducts derived from such plants contain fiber, phenolic compounds and/or bioactive compounds that increase the cholesterol-lowering effects by binding to and excreting cholesterol while improving egg quality traits without adversely impacting performance and health [ 40 , 65 , 75 ]. The abundant linoleic acid (LA) in amaranth grains can play an important role in the excretion of bile acids and reduce cholesterol [ 41 ].…”

“…Bile acids (colic and deoxycholic) are synthesized from squalene in hepatic cells. In turn, bile acids can combine with glycine and taurine to produce bile salts and reduce yolk cholesterol by increasing bile secretion turnover, therefore reducing egg cholesterol content [ 31 , 40 , 41 , 44 , 65 , 75 ].…”

Dietary Grape (Vitis vinifera) Seed Powder and Zn–Gly Chelate Complex for Mitigating Heat Stress in Broiler Chickens: Growth Parameters, Malondialdehyde, Paraoxonase-1, and Antibody Titer

“…To date, little information is available on the effect of dietary supplementation of grape seed powder on broilers growth, immunity, and antioxidant capacity during heat stress. Most of the past studies reported an improvement in the growth performance of broilers supplemented with byproducts/waste/pomace of grapes [21][22][23][24]. Little attention has been given to the effect of grape seed powder on broiler health and production.…”