DSpace Coleção:http://repositorio.ufgd.edu.br/jspui/handle/prefix/1312023-12-20T04:03:27Z2023-12-20T04:03:27ZMassagem dessensibilizadora e música reduzem o estresse e aumentam a produtividade de vacas de leiteLechuga, Karine Keyzy dos Santos Lemeshttp://repositorio.ufgd.edu.br/jspui/handle/prefix/57032023-09-14T06:42:06Z2023-02-13T00:00:00ZTítulo: Massagem dessensibilizadora e música reduzem o estresse e aumentam a produtividade de vacas de leite
Autor(es): Lechuga, Karine Keyzy dos Santos Lemes
Primeiro Orientador: Caldara, Fabiana Ribeiro
Abstract: In dairy cattle farming, the strong interaction between humans and animals, especially during milking management, can directly influence well-being and aspects related to production. In this context, good management practices, combined with the use of tactile and auditory stimuli, can help achieve better results. Therefore, the objective of this study was to evaluate the effects of desensitizing massage and musical stimuli during milking on productive, physiological, sanitary, and welfare parameters of dairy cows. The experiment was conducted on a commercial farm characterized by low milk production. Forty crossbred dairy cows, ranging in age and body weight from 36 to 42 months and 350 to 400 kg, were randomly allocated in a 2x2 factorial design to the following treatments: (Con) - cows not exposed to stimuli; (Mas) - cows exposed to massage during milking; (Mus) - cows exposed to music during milking; (Mas+Mus) - cows exposed to both stimuli during milking. Classical music with Andante (75 to 107 BPM) and Andante Moderato (90 to 100 BPM) tempos was selected for the study, and the massage was performed on the back and udder of the females immediately after entering the milking parlor. The experiment lasted for 39 days, with the first 10 days for animal adaptation and 29 days for data collection after the introduction of sensory stimuli. Cows not exposed to any stimuli showed residual milk quantity up to 41% higher than those that received only one of the stimuli or both combined. The use of massage during milking increased respiratory rate, milking time, and subclinical mastitis scores. Cows exposed to Mas+Mus showed higher ocular temperature compared to those that received only massage, as well as shorter flight distance compared to the other treatments. The sound stimulus increased pre-milking milk dripping. Cows that received the stimuli had higher levels of serotonin, indicating an additive effect of environmental enrichment factors. The use of desensitizing massage and music during milking was effective in reducing cows' reactivity to humans and promoting improvements in well-being and productivity. Both techniques, when combined, can have additive effects on milk productivity; however, certain sanitary precautions must be taken regarding the equipment used for tactile stimuli.
Editor: Universidade Federal da Grande Dourados
Tipo: Dissertação2023-02-13T00:00:00ZEmulsificante na dieta de codornas japonesas com diferentes fontes lipídicasSerpa, Felipe Cardosohttp://repositorio.ufgd.edu.br/jspui/handle/prefix/55932023-09-14T07:03:10Z2022-03-07T00:00:00ZTítulo: Emulsificante na dieta de codornas japonesas com diferentes fontes lipídicas
Autor(es): Serpa, Felipe Cardoso
Primeiro Orientador: Garcia, Rodrigo Garófallo
Abstract: The present dissertation is presented in 3 chapters, being a literature review and two articles from the field experiment. CHAPTER 1: The bibliographic review aims to elucidate the main advances related to the use of lipid sources and the inclusion of emulsifiers in poultry diets and their relationship with performance and animal health. Searching for reports in the main research databases Web of Science, Google Scholar and Science Direct. In the poultry chain, the use of lipid sources and emulsifiers has proven to be effective in terms of improving production and in terms of economic viability. The ingestion of lipids is of paramount importance, not only to meet the requirements and needs of the birds, but also having a role in the palatability of the feed and in the digestibility of other nutrients, factors that have a total influence on the health and performance of the birds. The inclusion of emulsifiers in the diet can improve lipid digestibility, consequently improving nutrient absorption, resulting in improved energy availability, performance improvements, increased deposition of fatty acids in egg yolks and reduced fat deposition in carcasses. CHAPTER 2: The objective of this work was to evaluate the inclusion of an emulsifying additive based on mono and diglycerides of fatty acids in diets formulated with different lipid sources on the histology of Organs digestive organs, biometry of the reproductive and digestive tract in Japanese quails (Coturnix coturnix japonica). The design used was completely randomized, with a 3x2 factorial arrangement with three lipid sources (soybean oil, poultry fat and bovine tallow), supplemented or not with an emulsifier, following two nutritional strategies: diet formulated to meet the nutritional requirements proposed by INRA (1999) and diet formulated with a reduction of 96 Kcal/kg of feed and added Lipocel emulsifier (g/ton). Nine repetitions were composed per treatment with 5 birds per experimental unit, totaling 270 birds. The use of emulsifier in different low quality lipid sources showed satisfactory results, since the conversion by dozens and marketable eggs showed better results with alternative lipid sources and the reduction of 4 energy in the diet did not show significant changes in egg production, i.e. not impairing its performance. CHAPTER 3: The objective was to evaluate the performance of birds, digestibility, the quality of Japanese quail eggs (Coturnix coturnix coturnix), as well as the quality of eggs stored by period of storage on the shelf, and the profile of fatty acids in the yolk. The different lipid sources with or without the inclusion of emulsifiers for egg quality and at different storage periods showed important results for the Haugh Unit (HU) and yolk weight, demonstrating that the different lipid sources such as tallow and poultry fat can be excellent alternatives for Japanese quail nutrition. As well as for storage shelf life, the use of bovine tallow showed higher egg weight when compared to the other sources. As well as for the performance of the birds, improving the interaction of the different treatments in the production of marketable eggs. Digestibility in EMAn (Kcal/kg) showed a difference when using the emulsifier additive regardless of the lipid source used. These results demonstrate that alternative lipid sources can become common for formulating energy-reduced diets for Japanese quails.
Editor: Universidade Federal da Grande Dourados
Tipo: Dissertação2022-03-07T00:00:00ZRelação dos fatores agropecuários e condenações de carcaças de frangos de corte pela análise fatorial de dados mistosSilva, Thiago Gonsalo dahttp://repositorio.ufgd.edu.br/jspui/handle/prefix/55492023-09-14T07:04:19Z2023-04-05T00:00:00ZTítulo: Relação dos fatores agropecuários e condenações de carcaças de frangos de corte pela análise fatorial de dados mistos
Autor(es): Silva, Thiago Gonsalo da
Primeiro Orientador: Garcia, Rodrigo Garófallo
Abstract: The application of new technologies in poultry farming makes it possible to increase national production and place Brazil in a prominent position worldwide. However, due to structural and climatic conditions, such technologies can be adapted during the incorporation process, which leads to challenges in the field and consequently to an increase in carcass condemnations observed by the Federal Inspection System (SIF). In view of this, it is important to know the profile of carcass condemnations, in order to contribute to decision-making in the field and in the slaughterhouses. The present work was carried out with the objective of relating the qualitative factors of sex, hatchery of origin, type of acclimatization of the aviaries and lineage to the condemnations of carcass of broiler chickens with the aid of factorial analysis of mixed data. 445 batches of griller chickens slaughtered between January 2021 and August 2022 in an agroindustry in the state of Mato Grosso do Sul were analyzed. Five main components responsible for explaining 69.83% of the total data variation were found. It was observed that the technological level of the aviaries evaluated was the factor that most explained the diversity in condemnations, with climatecontrolled aviaries being worse for carcass condemnations. For the sex variable, it was found that batches of male chickens were better for condemnations, lower age at slaughter, higher daily weight gain and better feed conversion. Regarding hatcheries of origin, it was possible to verify that batches with mixed origin, that is, from more than one hatchery in the same nucleus, resulted in a greater impact on condemnations at slaughter. The Ross95 lineage had less impact on carcass condemnations when compared to the other lineages. Comparing the data set, it was possible to verify that housing batches of Ross95 males, with a single origin from a hatchery in a positive pressure aviary, results in the best scenario for reducing carcass condemnations in the reality studied.
Editor: Universidade Federal da Grande Dourados
Tipo: Dissertação2023-04-05T00:00:00ZDensidades de estocagem no descanso pré abate afetam o esforço respiratório e muscular e qualidade do filé de Tilápia do Nilo (Oreochromis niloticus)Santos, Silvia Prestes doshttp://repositorio.ufgd.edu.br/jspui/handle/prefix/55482023-09-14T07:03:43Z2023-02-27T00:00:00ZTítulo: Densidades de estocagem no descanso pré abate afetam o esforço respiratório e muscular e qualidade do filé de Tilápia do Nilo (Oreochromis niloticus)
Autor(es): Santos, Silvia Prestes dos
Primeiro Orientador: Silva, Claucia Aparecida Honorato da
Abstract: Nile Tilapia (Oreochromis nilticus) management procedures are directly linked to the final quality of the product. Given this context, the aim of this study was to evaluate the effect of pre-slaughter stocking density and different stunning methods (thermonarcosis and asphyxia) on the biochemical, respiratory and muscle injury parameters associated with the quality and sensory characteristics of tilapia fillets. Were evaluated Nile Tilapia with an average weight of 762±105 g. The experiment was conducted in a 2 x 2 factorial scheme, with two densities (50 and 300 kg of live weight/m³) and two stunning methods (thermonarcosis and asphyxia), with a control treatment (fish removed from the pond and immediately euthanized by medullary section), with a total of five treatments, with 15 repetitions per treatment (each fish was considered an experimental unit) in a total of 75 fish sampled. Blood gas analysis, evaluation of biochemical parameters, analysis of meat quality and sensory analysis were carried out. High depuration density (300 Kg/m3), combined with the asphyxia stunning method, promotes changes in respiratory dynamics and provides greater stress, less firm fillet texture and greater weight loss due to cooking, as well as changes in creatine kinase (CK) and its CK-MB isoenzyme, demonstrating greater muscle damage. While the density of 50 kg/m3 during pre-slaughter, combined with the stunning method of thermonarcosis, provide a longer period of permanence in pre rigor mortis, which will result in fillets with a better sensory profile.
Editor: Universidade Federal da Grande Dourados
Tipo: Dissertação2023-02-27T00:00:00Z