01. Universidade Federal Rural de Pernambuco - UFRPE (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/1
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Resultados da Pesquisa
Item Consumo e digestibilidade de nutrientes em pequenos ruminantes alimentados com dietas contendo gérmen de milho e palma forrageira orelha de elefante mexicana (Opuntia stricta [Haw], Haw])(2024-09-30) Castello Branco, Natália Pereira; Carvalho, Francisco Fernando Ramos de; http://lattes.cnpq.br/8552194153767195; http://lattes.cnpq.br/6243605185116079The aim was to evaluate the effect of using corn germ and forage palm in diets for small ruminants on the consumption and digestibility of nutrients. Four male sheep and four male goats were used, castrated, fistulated and cannulated in the rumen, with an average initial body weight of 38 kg and 35 kg, respectively. The animals were kept in a confinement system in individual stalls (2,0m × 1,0m), with slatted floors and equipped with feeders and drinkers. A Latin square experimental design was used in a 2x4 factorial scheme.The experimental period lasted 88 days, with four experimental periods lasting 22 days each, 14 days for adaptation to the diets and management and 8 days for data and sample collection. The treatments were based on four experimental diets: without forage palm Opuntia stricta [Haw], Haw] (POEM) and corn germ (treatment - CONT); without (POEM) + corn germ (treatment - GIEM); with (POEM) and without corn germ (treatment- POEM); with (POEM) and corn germ (GIEM+POEM). The effects of species (E), treatment (T) and interaction effect of species with treatment (ExT) were evaluated, assuming significance at (P< 0,05). Related to the consumption, no effect of species (E) or interaction between species and treatments (ExT) for none of the variables (P>0,05). A significant effect (P<0,05) of treatments (T) was observed for the consuming variables of dry matter (DM), mineral matter (MM), crude protein (CP), ether extract (EE), total carbohydrates (TCH), non-fibrous carbohydrates (NFC) and total digestible nutrients (TDN). In which the diet containing (GIEM+POEM) promoted greater dry matter intake and other constituents, while the diet (GIEM) promoted lower consumption of dry matter, mineral matter, crude protein, total carbohydrates, non-fibrous carbohydrates and total digestible nutrients, but favored (P<0,05) greater consumption of ether extract along with the diet (GIEM+POEM). The digestibility coefficients of dry matter, crude protein, ether extract and neutral detergent fiber were not influenced by the association of forage cactus with full- fat corn germ (P>0,05), however, significant values were observed (P<0.05) for the organic matter and non-fibrous carbohydrates digestibility coefficients.Item Armazenamento pós-colheita afeta a digestibilidade in vitro e a produção de gases de cladódios de cultivares de palma forrageira?(2024-09-24) Barbosa, Claudenice da Cunha; Santos, Mércia Virginia Ferreira dos; Silva, Natália Viana da; http://lattes.cnpq.br/0190091649509674; http://lattes.cnpq.br/9565465836878202; http://lattes.cnpq.br/1837815718785025The forage cactus plays a fundamental role in animal feed, especially during drought periods in Northeastern Brazil. However, the cultivation and use of this forage require significant labor investment throughout the entire process, from planting to harvesting and daily transport for animal feeding. This study hypothesized that post-harvest storage of the forage cactus cultivars ‘Orelha de Elefante Mexicana’ (Opuntia stricta [Haw.] Haw.) and ‘Miuda’ (Opuntia cochenillifera (L.) Mill), for up to 56 days, may interfere by reducing the digestibility levels and gas production of the forage. The objective was to evaluate the effect of different post-harvest storage times on the in vitro digestibility and in vitro total gas production parameters of the forage cactus cultivars ‘Orelha de Elefante Mexicana’ and ‘Miuda’. The experiment was conducted at the Experimental Farm of the Federal Rural University of Pernambuco (UFRPE) Prof. Antônio de Pádua Maranhão Fernandes, located in Garanhuns - PE, Brazil. The forage cactus used was obtained from a one-year-old cactus plantation established on the farm, preserving the mother cladode during harvest. The experiment was conducted in a completely randomized design, with repeated measures over time and four replicates. Two experiments were carried out, with each cultivar of forage cactus evaluated independently. Eight experimental treatments were evaluated: 0, 8, 16, 24, 32, 40, 48, and 56 days of post-harvest storage. During storage, the aim was to maintain the cladodes without damage throughout the experimental period, with storage taking place in a covered warehouse open on the sides. The samples for analysis were composed of cladodes of different orders and from different parts of the piles. The variables evaluated were in vitro Dry Matter Digestibility (IVDMD), Indigestible Neutral Detergent Fiber (iNDF), and in vitro Total Gas Production (TGP). An analysis of variance was performed, using Tukey’s test with a significance level of 5%. The forage from Orelha de Elefante Mexicana showed high IVDMD, being 823.1 g/kg at time 0 (no storage), and an average of 660.2 g/kg from 8 to 56 days post-harvest. For iNDF, high levels were observed for Orelha de Elefante Mexicana as the storage time increased, with the 40 and 56-day post-harvest times being statistically superior to time 0 (no storage). For Miúda, iNDF on days 32, 40, and 48 of post-harvest storage was 43% higher than at time 0 (no storage). For gas production and fiber carbohydrate degradation, values of 251.5 and 153 mL/g DM were observed, respectively. The forage from Miúda presented high IVDMD at times 0 and 8 (738.4 and 726.4 g/kg), and higher gas production at times 0 and 8 (267.7 and 179.9 mL/g DM, respectively). Both forage cactus cultivars can be stored post-harvest for up to 56 days without significant compromise in digestibility levels and gas production.Item Efeito de zeólita (Clinoptilolita) em dietas com dois níveis de proteína sobre o coeficiente de metabolizabilidade dos nutrientes e energia em frango de corte(2024-02-28) Silva, José Anderson Gomes da; Ludke, Maria do Carmo Mohaupt Marques; http://lattes.cnpq.br/4629657233206289; http://lattes.cnpq.br/9036283711992323The literature indicates that the use of performance-enhancing additives in the utilization of dietary nutrients makes it possible to achieve better production rates. The aim of this study was to evaluate the effect of adding zeolite to diets with two levels of crude protein (3% below and at requirement) on the metabolizability of dry matter (DM), crude protein (CP) and crude energy, as well as determining the apparent metabolizable energy (AME) and apparent metabolizable energy corrected for nitrogen (AMEn) of the experimental rations in the different phases of broiler chickens (1 to 7, 8 to 21, 22 to 35 and 36 to 42 days). 720 1-day-old male Ross broiler chicks were housed in a completely randomized design in a 4x2 factorial scheme, with four levels of Celpec zeolite (0; 1.0; 2.0 and 3.0%) and 2 levels of CP in the diet (at the requirement and another with a 3% reduction), with 8 treatments with 6 replications and 15 birds per plot. The 3% lower CP level was adopted in order to challenge the use of zeolite in the diets. There was a significant interaction for all the variables studied and in all the broiler phases. In the 1 to 7 day phase, diets containing reduced protein and the inclusion of 2% zeolite significantly increased the values of MME (3617+-84 kcal/kg) and MNE (3418+-77 kcal/kg), being higher than diets without zeolite supplementation (2804+- 76 kcal/kg), with the opposite effect occurring when supplementing this additive in diets with adequate protein levels. For the other phases (8 to 21, 22 to 35 and 36 to 42 days), there was a different effect to that of the pre-initial phase, i.e. the positive effect of zeolite at the 2% level in relation to better nutritional and energy use of the feed occurred when supplemented with diets containing adequate levels of protein. This research shows that supplementing with up to 2% zeolite increased the utilization of nutrients and energy from diets with adequate levels of CP in all stages of the birds' lives. However, in the 1-7 day stage, this same level of zeolite (2%) improved this utilization when added to diets with a 3% reduction in CP.Item Efeito da dieta basal sobre o desempenho de cabras em lactação(2023-09-11) Souza, Margot Santos de; Ferreira, Marcelo de Andrade; http://lattes.cnpq.br/4818123702136736; http://lattes.cnpq.br/4617261628043561Goat farming has increasing in Brazil, especially in the Northeast region, which is responsible for 32% of the country's total production. Due to the edaphoclimatic conditions of this region some studies are carried out trying to improve the performance of those animals. Therefore, the present study intented to evaluate the effect of different sources of fiber (corn silage, sorghum silage, pangolon hay or sugarcane bagasse) associated with cactus pear in diets for Saanen goats in lactation process on nutrient intake and digestibility, ingestive behavior, milk production and composition. The experiment was carried out at the Experimental Station of the Pernambuco Agronomic Institute (IPA) in Sertânia (Pernambuco). Twelve multiparous and lactating goats were used in this experiment with an average weight of 48.9 kg, average initial production of 2.8 kg of milk/day and lactation period of 80 days. The goats were weighed, identified and distributed according to their productivity in three simultaneous Latin squares (4 x 4), containing four animals, four treatments and four experimental periods. The 4 experimental period LASTED 21 days each, with the initial 14 days for adaptation of the animals, and others for data and sample collection (food, leftovers, feces and milk). The diets were offered ad libitum as a complete mixture, three times a day, allowing 5 to 10% of the total dry matter supplied. The goats were manually milked twice a day. For the ingestive behavior, the activity that the goat is performing (feeding, rumination or idleness) were observed every 10 minutes for 24 hours. Statistical analyzes were performed using a PROC MIXED package from SAS (2014). Intake of dry matter (2.58kg/day) and organic matter (2.30kg/day), crude protein (0.385 kg/day), ether extract (0.170 kg/day), neutral detergent fiber (0.895 kg/day), non-fiber carbohydrates (0.858 kg/day) and metabolizable energy (5.66 Mcal/day) did not differ between fiber sources that made up the basal diet (P>0.05). Fiber sources did not influence the digestibility of dry matter and nutrients (P>0.05). The association of cactus pear with silages, hay and sugarcane bagasse did not alter milk production without correction, corrected for 3.5% of fat and corrected for energy (2.78; 2.53 and 2. 55 kg/day, respectively), in addition to the composition of the milk (P>0.05). The diets did not cause changes in any of the items evaluated in the ingestive behavior (P>0.05). It is recommended that any of the fiber sources be purchased along with cactus pear in the basal diet of lactating goats.Item Avaliação da digestibilidade de farinha de cefalotórax de camarão (Penaeus vannamei) em dietas para tilápia (Oreochromis niloticus)(2023-09-22) Campelo, Kesya Leal; Santos, Juliana Ferreira dos; http://lattes.cnpq.br/6621907859216486; http://lattes.cnpq.br/2587814165212462In order to promote knowledge about alternative ingredients for aquatic animal feed formulations, the apparent digestibility coefficients (ADC) of protein, dry matter and crude energy of two ingredients in tilapia feed were determined. Seventy-two juvenile Nile tilapia (Oreochromis niloticus) with an average weight of 61.85±10.06 g were used in a completely randomized experimental design with three treatments, three replications and eight fish per box, alternating between the box and the hatchery. Three treatments were used: Reference feed, based on the nutritional needs of the species; Test feed consisting of the reference feed with the addition of shrimp cephalothorax meal (P. vannamei) whole with reference feed; Test feed consisting of the reference feed with the addition of shrimp cephalothorax meal (P. vannamei) with low fat content. The ADC was determined by the indirect method using 1% celite as an inert indicator. The CDA for crude protein was 94.14% and 94.22% and digestible values for crude protein were 51.96% and 56.90%; for dry matter, 92% and 91.8%; for energy, 92%; and digestible values of 80 and 89% were found. Shrimp cephalothorax waste was considered a potential substitute for protein in feed for the species.