Sunflower cake in brown-egg laying pullet diets: Effects on the growing phase and on the beginning of production cycle

Sunflower cake in the diets of lightweight laying pullets: Effects on the growth phase and the beginning of production cycle

“…Thus, the pullets fed with a diet containing 25% SC presented an increase in FI to meet energy and nutritional requirements, which was evidenced by the maintenance of WG. Contrastingly, the observed increase in FI of these pullets increased the FCR, which was consistent with the results obtained by Souza et al (2020), who tested the inclusion of SC in the growth of brown-egg pullets. Although the studies using SC for pullets are limited in literature, the results obtained are similar to the results found in our study.…”

“…Similarly, Kargopoulos et al ( 2017) evaluated 0, 6.25, and 12.5% SC in brown-egg layer pullets' diet from 1 to 20 weeks of age and observed no adverse effects on pullets at this phase. Souza et al (2020) showed that up to 300 g/kg of sunflower cake could be included in the feed of brown-egg laying pullets between 7 and 17 weeks of age without exhibiting any negative influence on their performance, which also corroborated with the results of our study.…”

“…However, factors inherent to cultivation and grain processing (Liu et al, 2015), low lysine amounts (Antoszkiewicz;Tywonczuc;Matusevicius, 2004), and the presence of antinutritional factors, including high fiber content and presence of phytates and chlorogenic acid (Berwanger et al, 2014;Berwanger et al, 2017;Kargopoulos et al, 2017) can cause variations in chemical and energy compositions, limiting the usage of this feedstuff in poultry diets. Simultaneously, SC also reduces production costs and increases the financial return of the agricultural systems, enabling ecologically and economically favorable usage of such by-products in animal feed (Souza et al, 2020).…”

“…The growth phase is considered a critical phase within the production system (Freitas et al, 2014), where fibrous feed is provided to control the broilers' excessive weight gain (Braz et al, 2011). Some authors proposed the inclusion of SC in laying pullets (Kargopoulos et al, 2017;Alencar et al, 2019;Souza et al, 2020;Alencar et al, 2021) and demonstrated the possibility of additional studies with SC in white layers' diets. Considering the differences in strains, greater practical application, and a better understanding of the obtained results, adjustments were made to achieve optimal levels without compromising the health and performance of pullets.…”

Growth performance, carcass characteristics and cost implications of supplementing Turkey poults with toasted Bambara nut by-products

“…In a bid to solve the challenges of feed cost and shortages, several locally available alternatives such as by-products from crop harvests, processing, biomass, and foliage have been explored ( Alencar et al., 2021 ; Dida, Challi & Gangasahay, 2019 ; Li, Zhou, Xu & Zi, 2019 ; Pandi et al., 2016 ). The partial replacement of conventional livestock feeds with these by-products is common in developing countries such as Nigeria, and has been reported in previous research ( Ashayerizadeh, Dastar, Shargh, Mahoonak & Zerehdaran, 2018 ; Damasceno et al., 2020 ; Souza et al., 2020 ). Bambara nut by-products have been successfully used as additives/supplements in fingerling, rabbit and broiler feeds ( Nnamani, 2010 ).…”