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Effect of feed restriction on the maintenance energy requirement of broiler breeders
da Silva Teofilo, Guilherme Ferreira,Lizana, Rony Riveros,de Souza Camargos, Rosiane,Leme, Bruno Balbino,Morillo, Freddy Alexander Horna,Silva, Raully Lucas,Fernandes, Joao Batista Kochenborger,Sakomu Asian Australasian Association of Animal Productio 2022 Animal Bioscience Vol.35 No.5
Objective: This study aimed to evaluate the effect of the ad libitum and restricted feeding regimen on fasting heat production (FHP) and body composition. Methods: Twelve Hubbard broilers breeders were selected with the same body weight and submitted in two feeding regimes: Restricted (T1) with feed intake of 150 g/bird/d and ad libitum (T2). The birds were randomly distributed on the treatments in two runs with three replications per treatment (per run). The birds were adapted to the feed regimens for ten days. After that, they were allocated in the open-circuit chambers and kept for three days for adaptation. On the last day, oxygen consumption (VO<sub>2</sub>) and carbon dioxide production (VCO<sub>2</sub>) were measured by 30 h under fasting. The respiratory quotient (RQ) was calculated as the VCO<sub>2</sub>/VO<sub>2</sub> ratio, and the heat production (HP) was obtained using the Brower equation (1985). The FHP was estimated throughout the plateau of HP 12 hours after the feed deprivation. The body composition was analyzed by dual-energy X-ray absorptiometry scanning at the end of each period. Data were analyzed for one-way analysis of variance using the Minitab software. Results: The daily feed intake was 30 g higher to T2 (p<0.01) than the T1. Also, the birds of the T2 had significatively (p<0.05) more oxygen consumption (+3.1 L/kg<sup>0.75</sup>/d) and CO<sub>2</sub> production (+2.2 L/kg<sup>0.75</sup>/d). That resulted in a higher FHP 359±14 kJ/kg<sup>0.75</sup>/d for T2 than T1 296±17.23 kJ/kg<sup>0.75</sup>/d. In contrast, the RQ was not different between treatments, with an average of 0.77 for the fasting condition. In addition, protein and fat composition were not affected by the treatment, while a tendency (p<0.1) was shown to higher bone mineral content on the T1. Conclusion: The birds under ad libitum feeding had a higher maintenance energy requirement but their body composition was not affected compared to restricted feeding.
Júlia Daneluz,Guilherme Ferreira da Silva,Jocelei Duarte,Tayse Circe Turossi,Venina dos Santos,Camila Baldasso,Ana Carolina Daneluz 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.126 No.-
Membranes are barriers that act as filters, retaining particles and molecules larger than their pore sizeand allowing smaller particles and molecules to permeate. This study aimed to evaluate membranes ofmicrofiltration and ultrafiltration for later application in the filtration of kombuchas. To achieve the proposedobjective, the membranes were compacted and characterized in terms of hydraulic permeabilityand kombucha permeate flux. The hydraulic permeability of the microfiltration membrane was 308.15Lh1m2bar1 and that of the ultrafiltration membrane was 12.05 Lh1m2bar1. For both membranes,the permeate kombucha flux reduced with time for each pressure evaluated individually, dueto fouling.
Intake, digestibility, and performance of lambs fed spineless cactus cv. Orelha de Elefante Mexicana
Lopes Levi Auto,Ferreira Marcelo de Andrade,Batista Ângela Maria Vieira,Maciel Michel do Vale,de Andrade Rodrigo Barbosa,Munhame Joana Albino,Silva Tomás Guilherme Pereira da,Cardoso Daniel Barros,Vér 아세아·태평양축산학회 2020 Animal Bioscience Vol.33 No.8
Objective: To evaluate the effects of the carmine cochineal-resistant spineless cactus genotypes cv. Orelha de Elefante Mexicana (Opuntia) and Miúda (Nopalea) on the intake and digestibility of nutrients, ingestive behavior, performance, and ultrasound measurements of growing lambs. Methods: Thirty-six male (non-castrated) Santa Inês lambs were used, with an average age of 6 months and an initial average weight of 22.0±2.9 kg. They were distributed in a completely randomized design with 3 treatments (Tifton hay, Nopalea and Opuntia) and 12 replications, using initial weight as a covariate. The experimental period was 86 days, with the first 30 days used for the adaptation of the animals to the facilities, diets and management, and the remaining 56 days used for evaluation and data collection. Results: The intake and apparent digestibility of dry matter (DM), organic matter (OM), crude protein (CP), neutral detergent fiber (NDF), total carbohydrates (TC), non-fibrous carbohydrates (NFC), and total digestible nutrients (TDN) showed a significant difference (p<0.05) as a function of the diets, with the Nopalea treatment (p<0.05) increasing DM intake (g/kg and % body weight [BW]), CP, TDN, and TC digestibility, whereas the Tifton hay diet led to a high (p<0.001) neutral detergent fiber corrected for ash and protein (NDFap) g/d intake, NDFap (BW %) and digestibility of said nutrient. There was no effect of treatments (p>0.05) on feeding time, however, rumination time and total chewing time were higher (p<0.05) for animals fed Tifton hay. The performance of the animals was similar (p>0.05). For the ultrasound measurements, Nopalea promoted an increase in the final loin eye area, compared to Tifton hay. Conclusion: The use of spineless cactus variety Miúda leads to the greater intake and digestibility of nutrients. The evaluated carmine cochineal-resistant spineless cactus genotypes are alternatives for semi-arid regions as they do not negatively affect the performance of growing lambs.
Biocompatibility and bioactive potential of the NeoMTA Plus endodontic bioceramic-based sealer
Hoshino Roberto Alameda,Delfino Mateus Machado,da Silva Guilherme Ferreira,Guerreiro-Tanomaru Juliane Maria,Tanomaru-Filho Mário,Sasso-Cerri Estela,Cerri Paulo Sérgio 대한치과보존학회 2021 Restorative Dentistry & Endodontics Vol.46 No.1
Objectives: This study evaluated the biocompatibility and bioactive potential of NeoMTA Plus mixed as a root canal sealer in comparison with MTA Fillapex. Materials and Methods: Polyethylene tubes filled with NeoMTA Plus (n = 20), MTA Fillapex (n = 20), or nothing (control group, CG; n = 20) were inserted into the connective tissue in the dorsal subcutaneous layer of rats. After 7, 15, 30 and 60 days, the specimens were processed for paraffin embedding. The capsule thickness, collagen content, and number of inflammatory cells (ICs) and interleukin-6 (IL-6) immunolabeled cells were measured. von Kossa-positive structures were evaluated and unstained sections were analyzed under polarized light. Two-way analysis of variance was performed, followed by the post hoc Tukey test (p ≤ 0.05). Results: At 7 days, the capsules around NeoMTA Plus and MTA Fillapex had more ICs and IL-6-immunostained cells than the CG. However, at 60 days, there was no significant difference in the IC number between NeoMTA Plus and the CG (p = 0.1137) or the MTA Fillapex group (p = 0.4062), although a greater number of IL-6-immunostained cells was observed in the MTA Fillapex group (p = 0.0353). From 7 to 60 days, the capsule thickness of the NeoMTA Plus and MTA Fillapex specimens significantly decreased, concomitantly with an increase in the collagen content. The capsules around root canal sealers showed positivity to the von Kossa stain and birefringent structures. Conclusions: The NeoMTA Plus root canal sealer is biocompatible and exhibits bioactive potential.