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| Author(s): |
Bruna Marcele Martins de Oliveira
Total Authors: 1
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| Document type: | Doctoral Thesis |
| Press: | Pirassununga. |
| Institution: | Universidade de São Paulo (USP). Faculdade de Medicina Veterinária e Zootecnia (FMVZ/SBD) |
| Defense date: | 2015-11-20 |
| Examining board members: |
Eneiva Carla Carvalho Celeghini;
Rubens Paes de Arruda;
Eduardo Harry Birgel Junior;
Fabio Celidonio Pogliani;
Luciano Andrade Silva
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| Advisor: | Eneiva Carla Carvalho Celeghini |
| Abstract | |
In this study, were evaluated kidney, liver, energy, hormonal and acute phase proteins profiles to evaluate the possible interactions with the reproductive performance in cattle. For this, three experiments were designed. In experiment 1 the objective was to verify if artificial insemination (AI) causes changes in renal, liver, energetic, hormonal and acute phase proteins profiles and to study the relationship between these profiles and uterine hemodynamics. Blood samples from inseminated (GIA, n = 9) or non inseminated Nellore cows (CG, n = 9) were used. Samples were collected 30 hours before AI, 4, 24, 48 and 168 hours after AI. In experiment 2 the objective was to study the effects of semen quality on liver and protein profiles and study the relationship of renal, liver, energetic, hormonal and protein profiles on uterine vascularization. Blood samples of 362 cows were used, which were divided into three groups according to semen quality: Good (n = 121), medium (n = 121) and Regular (n = 1200. Samples were collected 30 hours before AI, 4 and 24 hours after AI. Finally, experiment 3 is a retrospective study, carried out in order to compare the renal, liver, energetic, hormonal, and acute phase proteins profiles between pregnant and non pregnant animals after AI, and check for relationship between uterine hemodynamics and fertility. In this experiment, animals were divided into two groups according to the result of AI (pregnant, n = 76 and non pregnant, n = 45). In all experiments, at the same time of blood sampling were performed sonographic evaluations of the uterus in color Doppler and spectral mode. The samples of experiments 1, 2 and 3 were subjected to quantification of acute phase proteins and metabolic components using automatic biochemical analyzer (RX Daytona) and to hormone dosage, by radioimmunoassay. Data were analyzed using PROC MIXED (SAS, version 9.2, 2010). Statistics differences were considered when P<0,05. In experiment 1, the groups did not differ about kidney, liver, energetic, hormonal and protein profiles, however, the RI showed positive correlations with AST and BHB and negative correlation with estradiol. Estradiol was also correlated with EV, however this correlation was positive. In experiment 2, the animals inseminated with semen B, M or R showed similar concentrations of the variables of liver and proteinogram profiles. The RI was positively correlated with cholesterol, HDL, LDL, and progesterone, and negatively with glucose, estradiol, albumin and total protein. EV showed negative correlations with urea, GGT and cortisol. In Experiment 3, the non pregnant and pregnant groups were similar about kidney, liver, energetic, hormonal, proteiogram profiles and uterine hemodynamics. Thus, in this study were not observed systemic changes caused by AI process and by quality of semen, and systemic differences did not notice is between non pregnant and pregnant animals. Additionally, uterine hemodynamic is correlated with various parameters, however, the vascular pattern of the uterus was not correlated with fertility (AU) | |
| FAPESP's process: | 11/22833-9 - Blood profile evaluation of pregnant and empty cows submitted to FTAI protocol with semen assessed by fluorescent probes |
| Grantee: | Bruna Marcele Martins de Oliveira |
| Support Opportunities: | Scholarships in Brazil - Doctorate |