EFEITO DA SUPLEMENTAÇÃO COM SEMENTE DE GIRASSOL SOBRE A MORFOMETRIA E ENDOCRINOLOGIA LUTEÍNICAS DE NOVILHAS DA RAÇA NELORE

• Ano de defesa: 2016
• Autor(a) principal: MATTOS, Gabriel Molinari de
• Orientador(a): CASTILHO, Caliê
• Banca de defesa: GRECCO, Fabíola Cristiane de Almeida Rego , CHACUR, Marcelo George Mungai
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Oeste Paulista
• Programa de Pós-Graduação: Mestrado em Ciência Animal
• Departamento: Mestrado em Ciência Animal
• País: Brasil
• Palavras-chave em Português: Ácido linieico, corpo lúteo, zebu, progesterona
• Palavras-chave em Inglês: linieico acid, corpus luteum, zebu, progesterone
• Área do conhecimento CNPq: CIENCIAS AGRARIAS::MEDICINA VETERINARIA
• Link de acesso: http://bdtd.unoeste.br:8080/jspui/handle/jspui/972

This study aimed to evaluate the luteal development and the plasma concentration of progesterone in pregnant Nelore heifers and non-pregnant supplemented with sunflower seed. 30 animals were aged 2 to 3 years, with body condition score 2.5 to 3.5 (1 to 5), kept in Brachiaria decumbens, water and mineral salt ad libitum. Before starting the sonographic evaluations of the reproductive system, heifers were divided into two groups where they received: 1.7 kg / day of dietary supplement with 40% soybean meal and 60% sunflower seed (Group Treaty GT: n = 11) or 1.7 kg / day of dietary supplement containing 53% of soybean meal, 47% corn (control group, CG, n = 15) for 60 days. Immediately after this period heifers were synchronized ovulation with hormonal protocol TAI (artificial insemination in fixed time) lasting eight days. On AI held ultrasound examination (US) of the ovaries and blood collection to monitor the development of the corpus luteum (CL) and plasma progesterone (P4), every 48 hours for 26 days. CL diameter was observed on days 22, 24 and 26 after IA in pregnant females, where the diameter was significantly greater (P <0.05) than in non-pregnant, regardless of diet. There was no treatment effect on plasma progesterone concentrations, but the reproductive status influenced (P <0.05). There was a higher concentration of P4 in pregnant animals from day 16 after AI. It is concluded that the diet with sunflower seed did not influence the concentration of progesterone and diameter of the corpus luteum. It was observed that the reproductive status influenced the diameter P4 and CL.