01.1 - Graduação (Sede)
URI permanente desta comunidadehttps://arandu.ufrpe.br/handle/123456789/2
Navegar
21 resultados
Resultados da Pesquisa
Item Efeito do gérmen de milho e palma forrageira (Opuntia stricta (Haw.) Haw) sobre o balanço de nitrogênio em pequenos ruminantes(2025-07-25) Venceslau, João Pedro Ferreira; Santos, Kelly Cristina dos; Silva, Matheus Henrique de Andrade; http://lattes.cnpq.br/8010696260862743; http://lattes.cnpq.br/2524411604638619; http://lattes.cnpq.br/8106264071046384Objetivou-se avaliar o efeito da utilização do gérmen integral extragordo de milho (GIEM) e da palma Orelha de Elefante Mexicana (POEM) sobre o balanço de nitrogênio em pequenos ruminantes. O experimento foi realizado no Departamento de Zootecnia da Universidade Federal Rural de Pernambuco, localizada na cidade de Recife. Foram utilizados quatro ovinos e quatro caprinos, sem raça definida, machos, castrados, fistulados e canulados no rúmen, com peso corporal médio de 38 ± 6,4 kg e 35 ± 3,9 kg, respectivamente. O experimento foi conduzido em dois quadrados latinos 4x4 em esquema fatorial 2x4, com período experimental de 88 dias, divididos em quatro períodos experimentais com 14 dias de adaptação e 8 dias de coleta de dados e amostras. As dietas foram compostas por volumoso à base de feno de capim Tifton 85 e palma forrageira e um concentrado composto por milho moído, farelo de soja, sal comum, mistura mineral, e gérmen de milho, com relação volumoso:concentrado de 60:40. Os tratamentos envolveram quatro dietas experimentais: CONT (sem POEM e sem gérmen), GIEM (com gérmen, sem POEM), POEM (com POEM, sem gérmen) e GIEM+POEM (com POEM e gérmen). O consumo dos nutrientes foi obtido pela diferença entre a quantidade ofertada e as sobras nos comedouros. A coleta total de urina e fezes foram realizadas do 17° ao 19° dia de cada período experimental para avaliação da excreção e determinação de nitrogênio e nitrogênio ureico urinário (NUU). No 20º dia foi realizado a coleta de sague para determinação do nitrogênio ureico plasmático (NUP). Observou-se efeito significativo (P<0,05) dos tratamentos sobre o consumo de matéria seca (CMS), consumo total de nitrogênio, excreção de nitrogênio via urina, N absorvido, N retido, NUP e NUU. Não foram observadas diferenças significativas (P>0,05) entre espécies ou da interação entre espécie e tratamento para a excreção fecal, excreção total e balanço de nitrogênio. Os animais alimentados com a dieta contendo GIEM + POEM tiveram maior (P<0,05) CMS, sendo 27,7% maior que o consumo observado pelos animais alimentados com a dieta GIEM. O consumo de N, o N absorvido, e o N retido acompanharam o mesmo comportamento. Em relação a excreção de nitrogênio via urina, os animais consumindo os tratamentos GIEM+POEM e GIEM, tiveram excreção 34% menor, quando comparado àqueles que consumiram as dietas CONT e POEM. As maiores (P<0,05) concentrações de NUP foram observadas nos animais alimentados com a dieta CONT, 34% a mais que os animais que receberam a dieta GIEM+POEM, o mesmo padrão foi observado para o NUU, com menor concentração também nos animais consumindo a dieta GIEM+POEM, apresentando 50% a menos em comparação os alimentados com a dieta CONT. Os resultados apontam que a palma forrageira Orelha de Elefante Mexicana associada ou não ao gérmen integral extragordo de milho aumentou o consumo de matéria seca e nitrogênio, além de aumentar a absorção e retenção de nitrogênio pelos animais.Item Estabilidade térmica e qualidade seminal de ovinos Dorper submetidos ao resfriamento adiabático evaporativo no semiárido brasileiro(2025-07-17) Rodrigues, Victor Batista; Pandorfi, Héliton; http://lattes.cnpq.br/7981297368478991; http://lattes.cnpq.br/7753696667481371Objetivou-se analisar os efeitos da climatização artificial sobre os indicadores fisiológicos, a temperatura escrotal, o gradiente térmico entre a temperatura corporal central e a testicular, bem como a qualidade seminal de carneiros da raça Dorper. Os dados foram coletados por meio do monitoramento de 20 machos Dorper, com idade média de 18 ± 2 meses e peso corporal médio de 70 kg, criados no município de Garanhuns, Pernambuco, entre abril e junho de 2023. Os animais foram mantidos inicialmente por 22 dias em instalações sob condições ambientais naturais e, posteriormente, por 43 dias sob climatização por sistema de resfriamento adiabático evaporativo. Realizaram-se coletas de sêmen em intervalos de três semanas, ao longo de todo o período experimental, para avaliação de parâmetros seminais. Foram registrados, a cada 21 dias, às 9h, 13h e 17h, os seguintes parâmetros: frequência respiratória (movimentos por minuto), temperatura retal (°C) e imagens termográficas da região escrotal, do globo ocular e da região lateral dos animais. Para as análises das características seminais, dos indicadores fisiológicos e das associações entre a temperatura corporal central e a testicular, adotou-se um delineamento experimental inteiramente casualizado, composto por dois tratamentos (condições ambientais naturais vs. climatização artificial) e 20 repetições, com comparação de médias via teste de Tukey (p < 0,05). Os dados de temperatura escrotal, umidade relativa do ar e temperatura ambiente foram submetidos à análise estatística descritiva. Observou-se menor variabilidade térmica na superfície escrotal durante o período de climatização artificial, com redução nas temperaturas de todas as regiões analisadas (temperatura das porções escrotais, temperaturas de pelame e de globo ocular e temperatura retal). A análise de componentes principais (ACP) revelou variância acumulativa de 60,00% na componente principal 2, indicando correlação negativa entre a integridade da membrana plasmática (IMP) dos espermatozoides e os indicadores fisiológicos e temperaturas escrotais. Destacou-se que a IMP apresentou valores 16% superiores durante a climatização artificial, período marcado por menores valores de frequência respiratória, temperatura retal, temperatura do globo ocular, do pelame e da região escrotal, além de redução na diferença entre a temperatura corporal central e a testicular. Esses resultados permitiram a elaboração de modelos de regressão com coeficientes de determinação (R²) de 0,681 e 0,740 para a IMP, demonstrando a influência positiva da climatização artificial na manutenção da qualidade espermática. Conclui-se que o sistema de resfriamento adiabático evaporativo promoveu estabilidade térmica e melhorias nos parâmetros fisiológicos e seminais dos ovinos Dorper, reforçando sua relevância para a produção animal em regiões semiáridas.Item Determinação do teor de NDT do farelo de palma orelha de elefante mexicana (Opuntia stricta (Haw.) Haw)(2025-02-24) Santos, Thayane Vitória Monteiro; Ferreira, Marcelo de Andrade; Siqueira, Michelle Christina Bernardo de; http://lattes.cnpq.br/6424600366994159; http://lattes.cnpq.br/4818123702136736; http://lattes.cnpq.br/4646225015556265A estacionalidade da produção vegetal na região Semiárida do Nordeste afeta a disponibilidade de forragem, e consequentemente, a produção animal. Diante deste cenário, inúmeros trabalhos foram realizados para identificar alimentos alternativos mais disponíveis e adaptados a esta região, tendo como destaque a palma forrageira, alimento que apresenta elevado teor de energia e supre grande parte das necessidades hídricas dos animais. Por apresentar alto teor de energia, estudos vêm sendo realizados com o objetivo de validar o uso da palma na forma de farelo, como alternativa às fontes tradicionais de concentrados energéticos. No entanto, na literatura não foram observados trabalhos determinando o teor de NDT do farelo de palma forrageira, medida fundamental para avaliar a energia disponível na dieta de ruminantes. Objetivou-se determinar, em um ensaio com ovinos, o teor de NDT do farelo de palma forrageira Orelha de Elefante Mexicana, assim como o consumo e digestibilidade dos nutrientes e comportamento ingestivo. Foram utilizados oito ovinos da raça Santa Inês, com peso corporal médio de 20,3 kg, distribuídos em um delineamento experimental inteiramente casualizado, com duas proporções do farelo de palma (19% e 44,4%). O tratamento com maior proporção do farelo proporcionou maior consumo de matéria seca, matéria orgânica, proteína bruta, carboidratos totais e nutrientes digestíveis totais. Não houve efeito da proporção do farelo sobre a digestibilidade de matéria seca, matéria orgânica, proteína bruta e carboidratos totais. Os tempos destinados a alimentação, ruminação e ócio, assim como as eficiências de alimentação e ruminação, não foram influenciados pelos níveis de inclusão do farelo de palma. O NDT do farelo de palma forrageira foi de 59,51%.Item Características de carcaça de matrizes ovinas de descarte(2024-10-01) Silva Neto, Adeildo Gomes da; Monnerat, João Paulo Ismério dos Santos; http://lattes.cnpq.br/3851426263880079; http://lattes.cnpq.br/3166354588303333The national sheep herd reached a total of 21,792,139 heads in 2023, with the state of Pernambuco accounting for 3,674,659 heads, a significant number of animals, many of which are annually culled. In sheep farming systems, ewes are essential tools for animal production, but they occasionally need to be culled, either due to age or health reasons that compromise their productive performance. When culled, these ewes' carcasses need to be utilized in some way, often being sold for consumption. However, meat from older or culled animals is undervalued due to its sensory characteristics and is often considered of low quality and low acceptability by consumers. Despite the low consumption of this species' protein, there is potential for a sheep meat market in Brazil. Research evaluating sheep meat quality typically focuses on studies investigating differences in sex, slaughter age, breed, diet, and production systems, with the vast majority being conducted on lambs. Meanwhile, studies on adult sheep, especially cull ewes, are almost nonexistent in the scientific literature. This study was conducted using 12 cull ewes of the Santa Inês breed, from the sheep herd of the Animal Science Department at UFRPE, with an average age of 33 months and an average weight of 56 ± 6.99 kg. The objective was to characterize the qualitative and quantitative aspects of cull ewe carcasses intended for meat production. It was observed that more research is needed to evaluate cull ewe carcasses in order to define carcass grading guidelines for this category, focusing on differentiating conformation and quality standards.Item Sucesso produtivo da indução de estro com prostaglandina em ovelhas da raça Santa Inês: relato de caso(2024-02-27) Aquino, Nelina Aurora Lourenço de; Souza, Andreia Fernandes de; Monnerat, João Paulo Ismério dos Santos; http://lattes.cnpq.br/3851426263880079; http://lattes.cnpq.br/6354486109796073The Santa Inês breed is a sheep breed widely used in Brazil, this factor is due to the adaptability and prolificacy of the breed, which on average is 1.4 lambs every two years. One of the techniques being studied are natural estrus inductions associated with the use of pharmacological protocols, including prostaglandin + male effect, which both stimulates follicular growth and also synchronizes estrus in this species. The objective of this course completion work was to report the experience of using prostaglandin in inducing estrus in Santa Inês sheep raised in the Department of Animal Husbandry at the Federal Rural University of Pernambuco - SEDE. We used 28 Santa Inês females raised in a confinement system, fed a diet based on (corn, wheat and soy) 200 g of concentrate/day, Tifton hay, water and mineral salt ad libitum. For estrus synchronization/induction, the animals were arranged in three groups (10, 10 and 8 animals), in order not to overload the breeders. To induce estrus, 0.3 ml of Cloprostenol Sodium (CIOSIN) was administered intramuscularly and repeated after seven days. After 48-72h the females were subjected to natural mating. Pregnancy diagnosis was performed using a trans-rectal ultrasound examination (ALOKA 100), starting on the 35th day after mating. 27 females were able to enter the estrus induction program. From the semiological evaluation, the females were classified according to their body condition score (BCS), where they presented scores between the ranges of 2.5 and 3.5. Regarding the observation of estrus, 100% of the females entered estrus after the second dose of PGF2a, on average 48h after the second application of the hormone. The conception rate showed a percentage of 88,88 % and the fertility rate was 81.48% (22/27). The birth rate was 181.81%, the total number of lambs born was 40 animals (22 males and 18 females), with an average weight of 3.365kg, with a lambing interval of 21 days between the first and last female. submitted to the protocol without transfer. The use of reproductive biotechnology is a viable alternative, as it allows births to be scheduled for a period that meets the needs of researchers from the Department of Animal Science at UFRPE-SEDE. The option to choose the protocol using prostaglandin F2a (PGF2a) was based on practicality and efficiency, as the calving period was reduced and the herd's birth rate increased, meeting our needs.Item Fontes de lipídeos associados à palma forrageira sobre as características sensoriais da carne ovina(2022-10-07) Nascimento, Thaís Fernanda do; Guim, Adriana; http://lattes.cnpq.br/5179137865818915; http://lattes.cnpq.br/5238680527935892The search for food that meets commercial and healthier requirements has created a greater search for meat of higher quality and nutritional value. In this paper, the goal was to evaluate the effect of diets with different lipid sources associated with forage palm on the sensory characteristics of sheep meat. The research included 39 male animals, without a defined racial pattern, castrated, 4 months old and an average initial weight of 22 kg. The experiment took place in the Department of Animal Science, sheep and goat farming sector of the Universidade Federal Rural de Pernambuco, located in Recife, Pernambuco. The treatments consisted of Tifton Hay and Forage Palm as forage, and ground corn, wheat bran and mineral salt as concentrate. In the experimental diet, cottonseed, corn germ and coconut cake were inserted in the concentrated feed. The animals were housed in individual suspended stalls, containing feeders and drinkers, distributed in a covered shed. The experiment lasted 60 days, with the first 30 days aimed at adapting the animals to diets, facilities and management. The last 30 days were devoted to data collection and evaluations. From the Longissimus lumborum muscle, the characteristics, sensory attributes and commercial value of sheep meat were evaluated. The diets utilized with lipid sources did not show significant differences in the sensory characteristics of sheep meat (P>0.05), showing a positive positioning of the evaluators regarding purchase intention, which makes it a good alternative for lambs in the termination phase.Item Acompanhamento e controle zootécnico do sistema de produção de pequenos ruminantes (caprinos e ovinos), do CODAI/UFRPE, localizado na região da Zona da Mata Norte, no município de São Lourenço da Mata - PE(2021-12-07) Brito, Admilson Ribeiro Toscano de; Freitas, João Antônio Gomes de; http://lattes.cnpq.br/1765326853404114; http://lattes.cnpq.br/7228033819346383The Obligatory Supervised Internship (ESO) was held at College Agricole Dom Agostinho Ikas of UFRPE, Campus-Tiúma, in the Animal Science Area, in the Nucleus de Caprinovinocultura, located in the forest Mata Norte region, in the district of Tiúma, municipality of San Lourenço of the Mata, Pernambuco, under the supervision of teacher Dr. João Antônio Gomes de Freitas and supervision of teacher Drª. Elisa Alves Vilar, with a total workload of 420 hours, in the period from 08/30/2021 to 11/16/2021. Zootechnical Monitoring and Control of the Goats and Sheep Production System were carried out, involving management of facilities; food management; reproductive management; productive management; sanitary management and disposal management. This work aimed to report the main activities related to the experiences developed during the referred internship, in the goat and sheep production nucleus of CODAI-UFRPE, in the routine of raising goats and sheep. The production nucleus, mentioned above, has a fixed squad of 22 animals; being 10 goats and 10 sheep (parents); 01 goat and 01 ram (breeders), in addition to the offspring, calving, which occur during the breeding routine. The goats are predominantly of the Anglo-Nubiana breed, while the sheep come from the Santa Ines breed. The intensive production system, with an emphasis on animal welfare, is the method adopted by the production nucleus. The installations consist of suspended bays with slatted floors. Nutritional and food management is carried out in a balanced way with elephant grass pasture (Pennisetum purpureum) and supplemented with protein and mineral concentrate. The main diseases observed and treated during this period were some bacterial diseases such as caseous lymphadenitis, food poisoning, epidermatitis and parasitic diseases such as worms. Discards are carried out following the guidelines for the genetic and productive improvement of the herd. During this period the animals showed an average weekly weight gain ranging from 250g to 350g per animal (50g/day).Item Comportamento ingestivo de ovinos alimentados com dietas contendo duas fontes energéticas associadas ou não a palma orelha de elefante mexicana(2021-07-14) Ribeiro, Luiz Henrique Cunha; Carvalho, Francisco Fernando Ramos de; http://lattes.cnpq.br/8552194153767195; http://lattes.cnpq.br/9796031048598474The aim of this study was to evaluate the replacement of corn by the extra fat whole germ of corn-GIEGM - in association or not with the Mexican Elephant Ear Palm - POEM - in the feeding of beef sheep. The experiment was carried out in the Sheep Farming sector of the Animal Science Department of the Federal Rural University of Pernambuco, located in the city of Recife-PE. Forty Santa Inês sheep were used, no castred males with four months old and initial weight of 22.0 ± 1.0 kg, distributed in a completely randomized design, in four treatments: Corn + Hay, Corn + POEM, GIEGM + Hay and GIEGM+ POEM, using 10% of the dry matter of the diet for corn and extra fat whole corn germ in the diets that contained these ingredients, the use of palm did not exclude the use of tifton 85 hay. The animals were housed in individual pens provided with drinking fountains and feeding troughs, arranged in a covered sheepfold. The experiment lasted 75 days, with the first 15 days for the animals to adapt to the facilities, diet and management, and the remaining 60 days for evaluation and data collection. Ingestive behavior evaluations. Were realized chemical analyzes of diets and foods. There was no difference for the contrasts where TR, TA and C2 were evaluated, effect of the association of the Mexican elephant palm ear with extra fat whole corn germ (GIMEG + Hay vs GIEGM + POEM); and C4 the effect of the energy source (Corn + Hay vs GIEGM + Hay), for TA, TR, TO, TMT and EAL. The Mexican elephant ear Spineless Cactus stimulated dry matter intake in both treatments to which it was included, favoring a longer idle time, reducing total chewing time, improving feeding efficiency and rumination efficiency.Item Parâmetros fisiológicos e consumo voluntário de ovinos alimentados com fontes de lipídios associados à palma forrageira(2022-05-31) Medeiros, Rodrigo Barbosa de; Guim, Adriana; http://lattes.cnpq.br/5179137865818915; http://lattes.cnpq.br/1454346400034264The objective was to evaluate the effect of different sources of lipids associated with forage cactus in the diet of sheep on the thermal comfort of the animals through physiological indicators and dry matter consumption. The maximum and minimum temperatures, relative air humidity, ambient air temperature of the experimental shed were monitored, whose data were used to calculate the temperature-humidity index (THI) and the Black Globe-Humidity Index (BGHI) aiming at estimate the thermal comfort of animals. The experiment was carried out at the Departamento de Zootecnia (DZ) of the Universidade Federal Rural de Pernambuco (UFRPE), located in Recife-PE. Twenty-four male lambs were used, with a mean age of six months and mean initial body weight of 22.0 ± 1.11 kg. The experimental period was 8 weeks, with isonitrogenous diets, based on forage cactus, tifton hay, maize corn, soybean meal, mineral mixture, with 3 treatments, T1 being composed of cottonseed, T2 of extra fat corn germ and T3 of dry coconut film. In order to evaluate the physiological parameters, respiratory frequency (RF), heart rate (HR), rectal temperature (RT) and body temperature (BT) were measured, the latter being measured at 4 points on the animal's body, forehead, neck, loin and shin. Data were collected every 2 experimental weeks at 8:00 am and 3:00 pm. The temperature and relative humidity of the air were measured throughout the experiment. The design used was a completely randomized design in a split-plot scheme, allocating the effect of the treatment (diets containing different varieties of lipids) in the plots and in the sub-plots the effect of the evaluation shift (morning and afternoon). The obtained data were submitted to analysis of variance and average grade comparison by Tukey test and Pearson correlation analysis between variables. There was no significant interaction between the factors (diet and shift), and there was no dietary effect on the respiratory frequency and body temperature variables, however, the heart rate and rectal temperature variables showed a difference (p ≤ 0.05) on the shift, being higher in the afternoon. Despite being susceptible to heat stress according to the high THI and BGHI, thanks to the adaptability and metabolic strategies of sheep to dissipate heat, the animals were able to maintain body temperature within the normal range for ruminants. It is concluded that the experimental diets did not cause damages to the physiological parameters, and the climatic conditions are responsible for increasing the physiological variables.Item Substituição do milho moído por gérmen integral de milho extra gordo em dietas para ovino(2021-02-02) Matos, Yasmin Caroline da Silva; Ferreira, Marcelo de Andrade; http://lattes.cnpq.br/4818123702136736; http://lattes.cnpq.br/4404627710797961The objective was to evaluate the effects of the inclusion of whole wheat germ in extra fat to replace ground corn in the sheep diet. Five crossbred mixed breed (SRD) sheep, castrated, fistulated and cannulated in the rumen, with initial mean body weight (BW) of 67.56 ± 9.13 kg were used, distributed in a 5x5 Latin Square experimental design. The roughage used were corn silage and forage palm, small cultivar and the treatments consisted of five replacement levels of ground corn with extra fat whole corn germ (0; 25; 50; 75; and 100%) in the concentrate. Consumption of MS, in kg / day and g / kg of CP, and that of MO, PB, NDT, FDNcp and CNFcp, expressed in kg / day, were not influenced by the replacement of ground corn with whole germ of extra fat corn. EE consumption increased linearly (P <0.05), as there was an increase in corn germ in the diet. With the replacement of ground corn with extra fat whole corn germ, there was no effect on the apparent digestibility coefficients of MS, MO, FDNcp. While the apparent digestibility coefficient of ether extract was linear, due to the dilution effect that diets with high EE content present. There was also a significantly increasing effect on the apparent digestibility of PB, since there was a smaller amount of PB excreted in the faeces. There was no significant effect on the time spent on food, rumination and leisure. The ruminal pH was not influenced by the replacement of ground corn with extra fat whole corn germ. Above all, it showed quadratic behavior throughout the collection hours. There was no effect of substitution on ammoniacal nitrogen (NAR) concentrations; however, decreasing linear behavior was observed due to the collection times and interaction of the replacement levels and the collection time. Quadratic behavior was also observed for acetate, and a decreasing linear effect for butyrate. The acetate and propionate concentrations, the total AGV and the acetate: propionate ratio showed quadratic behavior, depending on the collection times. In view of the results, it is recommended to partially replace ground corn with extra fat whole corn germ in the sheep diet.
- «
- 1 (current)
- 2
- 3
- »