Utilization of potato peels and sugar beet pulp with and without enzyme supplementation in broiler chicken diets: effects on performance, serum biochemical indices and carcass traits

Abstract

This study was conducted to investigate the effects of including potato peels (PP) and sugar beet pulp (SBP), as unconventional feeds, with and without enzyme in broiler diets from 1 to 42 days of age by observing the growth performance, blood parameters and carcass characteristics. A total of 150, 1-day old, chicks were randomly assigned into five groups, each with 30 chicks. Birds in group 1 were fed on the control diet. Chicks in groups 2 and 3 were offered diets containing PP and SBP at the rate of 15% and 7.5%, respectively, while those in groups 4 and 5 were fed the same diets but with adding an enzyme mixture. Using the unconventional feeds in the diets was found to decrease the body weight (BW). However, the feed intake, weight gain and feed conversion did not differ from the control in PP at the grower period, but decreased in SBP throughout the experiment. Addition of enzyme greatly improved the BW in PP and SBP to a degree that it surpasses the control and also increased the feed intake and conversion. The total cholesterol and low-density lipoprotein cholesterol serum levels were decreased in all tested groups. Carcass yield was not affected by treatments, but the carcass fat content was reduced using the unconventional feeds with or without enzyme. In conclusion, PP can be used at a rate of 15% in the grower diets of broilers. Furthermore, 15% PP or 7.5% SBP can be included in starter and grower diets, but with the addition of enzymes. This can help in solving the problem of current shortage and rising costs of conventional feeds.

Peel meals as feed ingredients in poultry diets: Chemical composition, dietary recommendations and prospects

“…Sweet potato ( Ipomoea batatas L) peel is high in energy, moderate in protein and low in crude fibre (Abdel‐Hafeez, Saleh, Tawfeek, Yousef, & Abdel‐Daim, ; Adeyosoye, Adesokan, Afolabi, & Ekeocha, ; Faramarzi, Lashkarboloki, Kiaalvandil, & Iranshahi, ; Zhang, Wheatley, & Corke, ). Abdel‐Hafeez et al.…”

“…Abdel‐Hafeez et al. () reported a metabolisable energy of about 11.25 MJ/kg. Crude protein and crude fibre ranges of 36–46 g/kg and 38–70 g/kg, respectively, have been reported in sweet potato peel (Abdel‐Hafeez et al., ; Adeyosoye et al., ; Faramarzi et al., ).…”

“…Sugar beet pulp (SBP) is also another potential feed ingredient for poultry feeding but its utilisation is limited by the low ME and high fibre content (Abdel‐Hafeez et al., ; Pettersson & Razdan,) and high water holding capacity of the fibre (Mateos, Jiménez‐Moreno, Serrano, & Lázaro, ). Abdel‐Hafeez et al.…”

“…Abdel‐Hafeez et al. () analysed SBP to contain about 3 MJ ME/kg, 9.6% crude protein and 19% crude fibre with the fibre being mainly in the form of non‐starch polysaccharides (NSP).…”

Bioproducts from Potatoes. A Review

“…Peels serve as a protective layer for potatoes, so it might be useful for the protection of other organisms as well. It has to be noted that peel extract should be obtained in an alkaline environment with approximately 9 pH [14], [15].…”