Bacharelado em Zootecnia (UAST)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2941
Siglas das Coleções:
APP - Artigo Publicado em Periódico
TAE - Trabalho Apresentado em Evento
TCC - Trabalho de Conclusão de Curso
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3 resultados
Resultados da Pesquisa
Item Características estruturais do capim-corrente (Urochloa mosambicensis) submetido a diferentes manejos de corte(2021-12-06) Santos, Eliane Rodrigues dos; Leite, Mauricio Luiz de Mello Vieira; http://lattes.cnpq.br/4204641633941814; Não localizadoCurrent grass (Urochloa mosambicensis) is a plant with high foraging potential in the Brazilian Semiarid region, as it has high tolerance, low water availability and grazing near ground level. The aim of this study was to evaluate the productivity of current grass as a function of different cutting managements. The experiment was carried out in the experimental area of the Federal Rural University of Pernambuco, Serra Talhada Academic Unit. The design used was in randomized blocks, with four cutting heights (40, 30, 20 and 10 cm), and four replications. Initially, the current grass pasture area at UFRPE/UAST used for the implementation of the experiment was delimited with dimensions of 8.0 x 10.0 m, 80.0 m². Then, the uniform cutting of the grass was carried out in the entire experimental area. A paddock was inserted every 2.0 m in length and 2.0 m in width to divide each plot. During the experimental period, the monitoring of current grass growth was carried out, evaluating the following structural characteristics: leaf blade length and width, stem length and diameter, plant height, number of: tiller, live leaf, dead leaf, fully expanded living leaf, expanding living leaf, green matter and dry matter weight. After cutting, the plant material was collected and taken to the laboratory to determine the dry mass content of the morphological components. These evaluations were carried out in three consecutive growth cycles of current grass. It was verified for stalk length and tiller number that grass cut at 30 cm had the highest mean, when cut at 20 cm had the highest mean leaf blade length and green matter weight. It was found that the number of expanded leaves was greater when cutting at 10 cm in height, with 7.50 cm. The averages of plant height and number of senescent leaves were higher when the cut was performed at 40 cm. When compared to the other treatments, the stem diameter and leaf blade width were not statistically different regardless of the cutting intensity. During the evaluation period, it was found that the grass cut at 20 cm in height had better forage production averages.Item Relação energia:proteína para suínos Piau de 70 a 90 kg de peso corporal criados em sistema alternativo no Semiárido pernambucano(2019-12-09) Barbosa, Elys de Barros; Holanda, Mônica Calixto Ribeiro de; http://lattes.cnpq.br/4373630020897826; http://lattes.cnpq.br/2855822796485177Increasingly the consumer market has been directed to products whose characteristics meet the demand of the population in the search for the supply of animal protein that meets the requirements, both from a nutritional and health point of view as well as from an economic point of view. However, increasing productivity of swine herds has been increasingly sought, and allied to this, animal nutrition work has been intensified to determine both protein and energy requirements, to better meet material requirements, genetic resources in the field. The objective of this study was to evaluate the influence of different energy levels on Piau castrated male pigs in the finishing phase of 70 to 90 kg body weight. Twenty castrated males with initial mean body weight of 71 ± 0.72 kg were used, distributed in four treatments with decreasing levels of metabolizable energy in the diets (3,230, 3,000, 2,770 and 2,540 kcal of metabolizable energy/kg ration) and five replications per diet,each animal was considered an experimental unit. The diets used were formulated to meet the nutritional needs of animals, varying the value of metabolizable energy through the amount of corn, soybean meal and wheat bran.Statistical analyzes were performed using analysis of variance and regression, and the F and Tukey tests with a significance level of 5% probability, using the R-Project version 2.13.1 for Windows software. There was a significant effect (P <0.05) on the performance of the piglets as a function of energy: protein ratio for Piau castrated male finishing pigs for period weight gain, feed intake and feed conversion.Item Desempenho zootécnico de suínos nas fases de crescimento e terminação submetidos a diferentes programas de iluminação em ambientes climatizados(2018) Lima, Adiel Vieira de; Holanda, Mônica Calixto Ribeiro de; http://lattes.cnpq.br/4373630020897826; http://lattes.cnpq.br/3278533468345906The experiment was conducted in the Swine Sector of UFRPE / UAST. Twenty-seven piglets, castrated male and female, from Pietrain-Duroc matrices, with initial weight of 38.1 ± 4.2 kg were used. The experimental design was completely randomized, in a 3 x 3 factorial arrangement, with 27 animals randomly distributed in nine bays with three air conditioning systems and three light supplementation programs, considering three replications per treatment. Feed and water were provided at will and the diets for each evaluation period were formulated with corn and soybean meal in order to meet the nutritional requirements of the animals (growth and finishing stages). The animals were weighed and housed in stalls with a ceramic tile roof, providing 6.0 m² of floor space, containing a semiautomatic type feeder and a pacifier-type waterer at a height of 40 cm from the ground in each bay. The pigs were weighed weekly and rations and leftovers were weighed daily (morning and afternoon) to evaluate performance parameters: weekly weight gain, total weight gain, daily feed intake and mean feed conversion. The performance parameters were analyzed using the SAS® GLM procedure and the comparison of the means, when necessary, were performed by the Tukey test at 5% probability. In the 30 to 50 kg (CRES I), 51 to 70 kg (CRES II) and 71 to 90 kg (TERM) phases, no interaction was observed between the light hours provided and the air conditioning systems (P> 0, 05) for daily ration consumption, daily weight gain and feed conversion. In the CRES I phasesthere was no significant difference (P> 0.05) in the light hours provided nor in the air conditioning systems on the analyzed variables. In the CRES II phase there was a significant difference (P <0.05) for daily ration consumption in both light hours and in air conditioning systems. In the baits with forced ventilation (BV) the consumption was greater with the supply of 12 and 18 hours of light. In the bays with evaporative adiabatic cooling (BR), the feed intake was lower (P <0.05) as the light hours provided increased. In the bays with natural light (12 hours) feed consumption was higher in BV, followed by BR, being worse in the unventilated bay (BS) and there was no significant impact on weight gain and feed conversion. When evaluating feed conversion, a significant difference (P <0.05) was observed for light hours and for air conditioning systems. Regardless of the air conditioning systems, feed conversion of the animals worsened as the supply of artificial light increased. Taking into account the systems of climatization it was observed that only in the BR there was worsening in the feed conversion when 12 and 18 hours of light were provided. In the TERM phase the light hours did not influence any of the studied variables. The air conditioning systems did not influence (P> 0.05) the feed conversion rate of finishing pigs. However, the climatization systems influenced (P <0.05) the varying feed intake and daily weight gain. In the bays without air conditioning the feed consumption was lower. In BR the feed intake was higher than that observed in the bays with BV and BS. It was concluded that the climatic systems adopted and the light programs provided did not improve the performance of semen-reared pigs.