TCC - Zootecnia (Sede)
URI permanente para esta coleçãohttps://arandu.ufrpe.br/handle/123456789/478
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Item Respostas fisiológicas de ovinos alimentados com palma forrageira(2019-06-18) Silva Neto, José Francisco da; Guim, Adriana; http://lattes.cnpq.br/5179137865818915; http://lattes.cnpq.br/5375824647061219The aim of study was to evaluate the effect of forage palm based diets on the physiological indicators of sheep, as well as, to analyze the correlation of these parameters with total digestible nutrients consumption. For this, the experimental protocol was approved by CEUA/UFRPE, under the license of 053/2015, using 36 lambs, with an average age of six months and initial body weight of 23.0 ± 3.11 kg, distributed in a design completely randomized, with three treatments and 12 repetitions. The experimental period comprised 86 days, with a base diet (Tifton hay, maize corn, soybean meal, urea, and mineral salt) and diets in which Tifton hay was partially replaced by forage palm (either Nopalea Cochenillifera Salm Dyck or Opuntia stricta Haw). The diets were given twice a day in the form of complete feed. In order to evaluate the physiological parameters, respiratory frequency (RF), heart rate (HR), rectal temperature (RT) and body temperature (BT) were measured. These data were collected on the 50th and 55th experimental days at 8:00 am and 3:00 p.m. Also, the air temperature and air moisture were measured during the experiment. The obtained data were submitted to analysis of variance and average grade comparison by Tukey test and Pearson correlation analysis between variables. No interaction has been noticed between the diet and the shift, nor was there a dietary effect on the evaluated variables. However, RF and BT were higher in the morning in comparison to the afternoon shift. All the values recorded for HR and RF were above normal for the species. It was verified that the variables RF and BT correlated positively and significantly with the intake of total digestible nutrients in the animals that received the control diet in both shifts. 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 Retenção de nitrogênio em ovinos alimentados com concentrações oscilantes de proteína bruta na dieta(2019-06-19) Santos, Caio Cesar Carneiro dos; Monnerat, João Paulo Ismério dos Santos; http://lattes.cnpq.br/3851426263880079; http://lattes.cnpq.br/5344836037229833The objective of this study was to evaluate the intake, digestibility and impact of the daily oscillation of protein protein concentrations in sheep on the plasma content of N-ureic, aminotransferases, and serum sheep proteins, testing the hypothesis that the higher nitrogen retention ruminants submitted to diets with oscillating concentrations of crude protein (CP) may be attributed to increased urea recycling during the period when diets are low in CP. For the experiment, four uncastrated sheep, with a mean of 20 kg of live weight, were distributed in a 4X4 Latin square design. The experimental treatments were: No protein restriction (Control); restriction every 24 hours (T-24); restriction every 48 hours (T-48); and with restriction (TRestri). No significant effect (p> 0.005) was observed between the experimental treatments for the consumption variables: MS, MO, NDT, EE, NDF, CNF. However, for the CP consumption, the Control, T-24 and T-48 treatments did not provide a significant difference in consumption, however, the animals submitted to the T-Restri treatment showed differences in the other treatments, with lower CP consumption. As for the digestibility, the T-48 treatment (75.23) was superior to the Control (74.07) and T-Restri (70.44) diets, while the T-24 diet was intermediate between Control and T -48. The T-Restri treatment had lower digestibility than the others, resulting from the lower CP intake found for this treatment. For Nitrogen consumption, there was no significant difference between Control, T-24 and T48 treatments. However, for Nitrogen in the urine, greater excretion was observed for the animals of the T-48 treatment, whereas the Control was intermediate between T-24 and T-48. There was no significant effect among treatments for nitrogen in the faeces. For the variables of N-ureic, minotransferases and serum proteins , there was no significant effect (p> 0.005) among experimental treatments. It is concluded with this work that the oscillating supply of crude protein does not influence the retention of nitrogen, demonstrating a retention pattern similar to the daily supply that meets the protein requirement in its totality.Item Digestibilidade dos nutrientes em ovinos Santa Inês recebendo dietas com diferentes fontes de carboidratos associadas à ureia(2019-01-15) Silva, Letycia Cristine Fernandes Lira da; Carvalho, Francisco Fernando Ramos de; http://lattes.cnpq.br/8552194153767195; http://lattes.cnpq.br/3420693856221234The objective of this study was to evaluate the digestibility of diets based on different sources of carbohydrates associated with high urea levels, replacing soybean in diets for sheeps. Four diets were tested with Tifton-85 hay (580 g/kg dry matter) as forage and corn+soybean; corn+urea; cassava scraping+urea and cactus pear+urea as concentrated ingredients. The experiment was carried out at the Animal Science Department of UFRPE. 40 male uncastrated sheep were used, distributed in random blocks, with four treatments and ten replications, housed in individual wooden stalls, equipped with feeder and drinking fountain. The duration of the experiment was 76 days, 20 of adaptation and 56 for data collection. The apparent digestibility (AD) assay was performed by the total fecal collection method. During the period of the digestibility test the feces were collected daily to determine the digestibility coefficients of dry matter, organic matter, crude protein, ethereal extract, neutral detergent fiber, total carbohydrates and non-fibrous carbohydrates. The apparent digestibility coefficients (ADC) were obtained by the relationship between the amount of ingested and excreted nutrients. The data were submitted to analysis of variance and the averages were compared by the Tukey test (P <0,05) procedure using the General Linear Models (GLM) of the Statistical Analysis System (SAS) program. The dry matter digestibility coefficients did not vary among the treatments, except for the animals that were fed with cactus pear+urea (59,66). The diet that contained cactus pear in its composition also provided lower digestibility of organic matter (62,92) and total carbohydrates (63,75), compared to corn+urea (69,50; 69,97) or cassava scraping+urea diets (70,47; 71,91). The crude protein digestibility coefficients were similar for the corn+urea, cassava scraping+urea and cactus pear+urea diets (78,54), being higher than the control diet (74,46). The digestibility coefficients of the ethereal extract were similar to each other in treatments corn+soybean and corn+urea (72,21) and similar to each other in the treatments cassava scraping+urea and cactus pear+urea (60,68). The digestibility coefficient of the non-fibrous carbohydrates was higher for the cassava scraping+urea diet (86,26). It is possible the total replacement of soybean by urea in the experimental diets, especially in the diet composed by the association of manioc and urea, which presented better overall response in the variables evaluated in relation to the apparent digestibility.Item Inclusão da cana-de-açúcar (Saccharum officinarum, L.) em substituição à palma forrageira (Nopalea cochenillifera Salm – Dyck) na dieta de ovinos(2018-08-21) Oliveira, Laura Silva de; Conceição, Maria Gabriela da; http://lattes.cnpq.br/2620793027161237The effects of inclusion of sugarcane in substitution of forage palm (0; 25; 50; 75 and 100%) in sheep diets, on intake and digestibility of nutrients and ingestive behavior were evaluated. Five sheep with no defined racial pattern, with initial body weight and 58.0 ± 6.65 kg, with cannulae in the rumen, were distributed in a 5 x 5 Latin square. Stool collection was performed during three consecutive days to determine the digestibility of DM and nutrients. There was a quadratic effect for dry matter intake (DM) (33.73% - 1,101 kg) and OM (39.38% - 1.010 kg). The PB consumption decreased and there was no effect for the consumption of FDN and MOD. The digestibility of MS decreased linearly (P <0.05), while for the digestibility of MO and PB, there was an increase with the inclusion of sugarcane levels in substitution for forage palm. There was no effect (P> 0.05) for feeding times, while for rumination, a quadratic effect was observed with a maximum of 87.27% of substitution (507.4 min / d -1) and the time spent with activity was reduced (P> 0.05). In order to maximize MS intake, it is recommended to substitute sugar cane palm in 33.73% in diets for sheep.