Effects of Wine by-Products on Growth Performance, Complete Blood Count and Total Antioxidant Status in Broilers

Abstract

This study aimed to investigate the effect of whole grape pomace (GP), grape seed (GS) and grape pomace polyphenolic extract (GPEP) on growth performance, total antioxidant status (TAS) and complete blood count (CBC) of 40-day-old chicks (hybrid Cobb 500). A total of 432 unsexed one-day-old chicks were divided into six groups: control (CON) and five experimental groups, 10 g/kg GP, 20 g/kg GP, 5 g/kg GS, 10 g/kg GS and 15 mL/L GPEP. The results showed a higher increase in growing rate in 5 g/kg GS group, from the first week of the chicks' life throughout their growth, the average body weight of the chicks being significantly higher (p<0.01) than CON. The broilers that received 5 g/ kg seeds in the diet, 10 g/kg and 20 g/kg GP respectively, have achieved a better feed conversion ratio (FCR) than CON. The introduction of GPEP in drinking water has significantly affected (p<0.05) the growth performance in the fourth week of the experiment, lower weight gains could be due to high levels of polyphenols in grape pomace extract that may have a delayed effect on the growth of chickens. The CBC and TAS were not affected by dietary treatments (p>0.05) at 40 days of age. As a conclusion, the amount of 5 g/kg seeds, 10 g/kg and 20 g/kg pomace, can be added to the diet of the broilers, the dose of 5 g/kg seeds in the diet offering advantages in growing rate and feed valorization in weight gain.

Effect of Dietary Grape Seed Supplementation as a Natural Growth Promoter on the Growth Performance of Japanese Quail

“…Based on the results of the present study, quail diets containing 3% GS /kg diet were effective in enhancing growth performance better than 1% GS /kg diet. This result was inconsistent with the results observed by bothFawzia et al (2014), who indicated that rabbits receiving 1.0% of GSP had a heavier final body weight and average daily weight gain than the other groups; however, the level of 1.5% GSP had less FI and showed the best value of feed conversion as compared to the other groups also,Pascariu et al (2017) found that the lowest level of GSP 5g/kg diet showed better performance than 10g and 20g/kg diet. The present results are in line with growth performance results shown by Abu Hafsa and Ibrahim (2017), who reported that 2% GS were effective than 4% in enhancing growth performance.…”

“…However, Abu Hafsa and Ibrahim (2017) reported that both of final body weight and body weight gain was increased by addition of 20 g/kg GS to the basal diet with improving in feed conversion ratio but, feed intake not affected, while carcass physical and chemical composition characteristics of meat influenced by treatments as dietary 20 g GS significantly increased carcass yield, dressing and gizzard%, the addition of 40 g/kg of GS significantly reduced abdominal fat% in the birds. Also, Pascariu et al (2017) reported that the dose of 5 g/kg GS in the diet increased growing rate and feed efficiency. Brenes et al (2016) illustrated the benefits of GS as a functional feed additive in monogastric nutrition resulting in inhibition of lipid peroxidation in meat.…”

From Landfills to the Dinner Table: Red Grape Pomace Waste as a Nutraceutical for Broiler Chickens

“…The fact that these physiological parameters fell within the normal range for broiler chickens suggests that there was no negative effect of GP on the physiological status of the broiler chicken. Pascariu et al [27] also reported that none of the blood erythrocyte parameters and antioxidant status of serum were influenced when chickens were fed grape pomace-containing diets. Similarly, Kara et al [28] reported that including GP in hen diets at 40 and 60 g/kg levels had no effect on serum triglycerides levels, while Ebrahimzadeh et al [29] reported no variation in total protein, glucose, and cholesterol concentrations in the serum of chicks fed GP-containing diets.…”

Microbiota Changes Due to Grape Seed Extract Diet Improved Intestinal Homeostasis and Decreased Fatness in Parental Broiler Hens

“…A supplementation of 2.5 g of GSE/kg to 21-day-old chicks had no adverse impact, while 5 g/kg retarded their growth rate and decreased their feed conversion [25]. However, the use of grape pomace (5, 10, and 20 g/kg) in the diet of broilers from hatching to 40 days old increased growth and feed conversion [42]. These studies showed that the way in which grapes are incorporated into the diet (GSE or grape marc) can have different effects on animal growth.…”