DSpace Coleção:
http://repositorio.ufgd.edu.br/jspui/handle/prefix/1984
2023-11-24T14:05:17ZEstratégias de suplementação em bovinos como alternativa para mitigação da produção de metano por fermentação ruminal
http://repositorio.ufgd.edu.br/jspui/handle/prefix/5587
Título: Estratégias de suplementação em bovinos como alternativa para mitigação da produção de metano por fermentação ruminal
Autor(es): Souza, Yasmin Gonçalves da Silva de
Primeiro Orientador: Goes, Rafael Henrique de Tonissi e Buschinelli de
Abstract: The Brazilian beef cattle industry has world prominence due to its expressive productivity. The current scenario discusses how the activity contributes to the increase in the emission of greenhouse gases, such as methane. This concern affects the consumer market, which demands production that minimizes environmental impacts. Thus, the experiment was carried out with the objective of evaluating the ruminal fermentation parameters of cattle kept on pasture, using different supplementary strategies for methane mitigation. Five (5) crossbred cattle, with an average weight of 520 kg, equipped with permanent ruminal cannulas, were randomly distributed in a Latin square design (5x5). The animals were kept in individual paddocks in Urochloa brizantha, cv. Marandu (Syn Brachiaria), receiving daily supplementation in the morning, following the amounts (% BW) indicated on the product label (SP1=0.04; SP2=0.08; SP3=0.13; SP4=0.25 ; SP5=0.11). In total, the experiment was segmented into five periods lasting 12 days, with the collection of ruminal fluid on the 11th day, for evaluation of pH, N-NH3 and determination of the concentration of short-chain fatty acids, which served as to estimate enteric methane production following the methodology of Moss et al. (2000), where he calculated the generation of CH4 based on the proportions of acetic, propionic, and butyric acid, using the following equation: CH4= 0.45 (C2) – 0.275 (C3) + 0.4 (C4). The data obtained were submitted to SAS (Version 9.1.3, SAS Institute, Cary, NC 2004), checking the normality of the residues and the homogeneity of the variances by PROC UNIVARIATE. The experimental supplements did not show significant results for pH (P = 0.132), N-NH3 (P = 0.927) and for methane production (P = 0.148). However, there were significant results when we consider the time after supplementation for the variables pH (P = 0.004) and N-NH3 (P = 0.026), indicating interaction with the ruminal microbiota, which caused reductions in the production of acetic acid (P= 0.002). Supplements with higher NDT contents are the most suitable for the enteric methane mitigation strategy.
Editor: Universidade Federal da Grande Dourados
Tipo: Trabalho de Conclusão de Curso2023-05-04T00:00:00ZInfluência de diferentes estratégias de suplementação sobre o comportamento ingestivo de forragem de bovinos
http://repositorio.ufgd.edu.br/jspui/handle/prefix/5586
Título: Influência de diferentes estratégias de suplementação sobre o comportamento ingestivo de forragem de bovinos
Autor(es): Souza, Thalison Marques de
Primeiro Orientador: Goes, Rafael Henrique de Tonissi e Buschinelli de
Abstract: Brazilian beef cattle farming is characterized by the fact that a large part of the herd is raised exclusively on pasture. Throughout the year, the forage undergoes quantitative and qualitative changes, resulting in oscillations in the performance of the animals. The adoption of supplementary strategies emerges as an alternative for maintaining or improving the performance of animals, as it consists of supplementing nutrients when forage is not able to meet all nutritional requirements. Given the aforementioned facts, the objective of this study was to observe the relationship between the supply of different supplements and the change in the ingestive behavior of cattle on pasture. Five crossbred animals, with an average weight of 520 kg, equipped with permanent ruminal cannulas, were randomly distributed in a Latin square design (5x5). The animals were kept in individual paddocks of approximately 0.2 hectare, equipped with a trough and drinker, in Urocloa brizantha cv. Marandu (Syn Brachiaria). The experimental period consisted of 12 days, where treatments were provided every day, with collections (blood, feces and urine) being performed on the 11th day and the behavior analysis on the 12th. To evaluate the effects of diet on ingestive behavior, the following model was adopted: Yijl = μ + Ai + Pj + Dl + erijl; where Yijl = dependent variable, μ = overall mean, Ai = animal effect (i = 1 to 5), Pj = period effect (j = 1 to 5), Dl = diet effect and eijl = experimental error. The use of different supplements did not change the animals' grazing behavior between treatments, and increased DM intake. The higher consumption of protein-energy supplement (SP4) provided the supply of a greater amount of crude protein in relation to the protein supplement (SP3), and this greater intake may result in greater weight gain. The lower consumption of the mineral supplement (SP1) was able to encourage the animals to graze for a similar time to the other treatments, which is a positive point, since the lower levels of CP, NNP and TDN are present in its composition.
Editor: Universidade Federal da Grande Dourados
Tipo: Trabalho de Conclusão de Curso2023-05-04T00:00:00ZEfeito da aplicação de biofertilizante na produção e qualidade de capim Piatã (Brachiaria Brizantha cv. Piatã) e nos atributos quimicos do solo
http://repositorio.ufgd.edu.br/jspui/handle/prefix/5585
Título: Efeito da aplicação de biofertilizante na produção e qualidade de capim Piatã (Brachiaria Brizantha cv. Piatã) e nos atributos quimicos do solo
Autor(es): Souza, Alana Dias de
Primeiro Orientador: Alovisi, Alessandra Mayumi Tokura
Abstract: Forage grasses are the main sources of food for cattle, since, in Brazil, animals are raised, for the most part, in an extensive system, however, tropical soils, in general, are collected and of low availability of nutrients, and this factor impairs plant development. To get around the situation, several alternatives of fertilization management are used, such as plastering, liming, chemical and organic fertilization. Among the organic fertilization there is the use of biofertilizer. Thus, the objective was to evaluate the effect of biofertilizer application on soil chemical attributes and forage production and quality. The study was carried out in the municipality of Jateí - MS, in an Oxisol cultivated with Brachiaria brizantha (Syn. Urochloa brizantha) cv. BRS Piatã. The experimental design used was randomized blocks, in a 2x2 factorial scheme (with and without biofertilizer), with four replications. The treatments were: A1 - pasture area that was at rest and receiving biofertilizer; A2 - pasture area under grazing, but with only three animals that received the biofertilizer; A3 - newly reformed area, without application of biofertilizer or any fertilizer being intercropped with the watermelon plantation under correction effect and A4 - pasture area under grazing, containing 155 animals, with degraded pasture. This area did not receive any type of fertilization and correction. The application of the biofertilizer was carried out with a tank. Three applications of the biofertilizer were carried out in areas A1 and A2, with an interval of 90 days. Samples of the treatments were analyzed to evaluate the production of dry mass and bromatological analyses. As purchased for the mass, a 0.25 m² ring was used to delimit the harvesting area. The forage was cut at ground level observing the periphery limits of the rim and harvested. After cutting, the forages were weighed for foreign fresh weight and, subsequently, the representative experiments were placed in a forced air circulation oven at 65°C until constant weight. The dry weight was determined and then the material was ground in a Wiley-type mill with a 2 mm sieve, for bromatological determinations: neutral detergent fiber (NDF), acid detergent fiber (ADF) and crude protein (CP). Soil samples were collected on October 1, 2022. For the chemical characterization of the soil, samples were taken, sampling five random subsamples of the total area, at depths 0 to 20 and 20 to 40 cm. The subsamples were then composed for each depth and homogenized, and then sent to the FCA/UFGD Soil Fertility Laboratory for chemical analysis. The results were examined using analysis of variance and Tukey's test was applied at 5% probability to compare the means of the indicators. In general, in all treatments the chemical attributes of the soil were below the range considered adequate for the growth and development of the forage. These factors led to low production of phytomass with low nutritional value.
Editor: Universidade Federal da Grande Dourados
Tipo: Trabalho de Conclusão de Curso2023-04-27T00:00:00ZConsumo e digestibilidade de diferentes suplementos na transição secas-águas
http://repositorio.ufgd.edu.br/jspui/handle/prefix/5584
Título: Consumo e digestibilidade de diferentes suplementos na transição secas-águas
Autor(es): Silva, Calebe Corcino da
Primeiro Orientador: Goes, Rafael Henrique de Tonissi e Buschinelli de
Abstract: Brazil have a great potentgial in the world beef production in pasture systems, and this reflects its territorial extension and tropical climate. However, the production cycle in extensive regimes is complex, with the need for management of several factors. Supplementation is one of the factors used to circumvent this factor. To evaluate the consumption of different supplements and the relation with pasture consumption, five different commercial supplements (two mineral, two protein and one protein-energy) were fed to cattle averaging 520 (± 35) kg, provided with permanent rumen cannulas, and randomly distributed in a 5x5 latin square design, in individual pastures of Urochloa brizantha, cv. Marandu (Syn Brachiaria), receiving daily supplementation in the morning period, following the amounts (%BW) indicated on the product label (SP1=0.04; SP2=0.08; SP3=0.13; SP4=0.25; SP5=0.11). In total, the experiment was segmented into five periods of 12 days duration, with accounting for leftovers done daily and readjustment every 3 days. For forage availability estimation and collection, a 0.25 m² metal square was used. The collected samples were weighed to determine the natural matter content and were dried in a forced ventilation oven at 60°C for determination of dry matter (DM: method 930.15), crude protein (CP: Nx6.25; method 984.13) according to AOAC (1991) methodologies. The contents of acid detergent fiber (ADF) and neutral detergent fiber (NDF), as described by Van Soest and Robertson (1999); adapted by Mertens (2002). The TDN content was estimated from the NDF content as described by Capelle et al. (2001). The data obtained were submitted to SAS (Version 9.1.3, SAS Institute, Cary, NC 2004), verifying the normality of residuals and homogeneity of variances by PROC MIXED. There was no significant difference (P>0.05) in pasture consumption due to low forage availability. The supplement with the highest TDN content (640g/Kg) caused the highest intake and protein digestibility among all others. The quality and availability of forage are determining factors in the consumption of mineral, protein and protein-energy supplements.
Editor: Universidade Federal da Grande Dourados
Tipo: Trabalho de Conclusão de Curso2023-05-04T00:00:00Z