Plasma Progesterone Concentrations and Lipidic Metabolites in Crossbred Holstein-Zebu Heifers Treated or not with Growth Hormone and Superovulated

Revista Brasileira de Zootecnia

Carvalho, Giovanni Ribeiro de¹  Borges, Álan Maia¹  Rocha Júnior, Vicente Ribeiro¹  Borges, Juliana Corrêa¹  Torres, Ciro Alexandre Alves¹  Ruas, José Reinaldo Mendes² 

[1] Universidade Federal de Viçosa;Empresa de Pesquisa Agropecuária de Minas Gerais, Viçosa

关键词: HDL;    progesterone;    somatotropin;    superovulation;    total cholesterol     IntroduçãoA progesterona é um hormônio de importância primordial para a regulação do funcionamento do sistema reprodutor feminino e é produzida;    principalmente;    pelo corpo lúteo;    advindo da reorganização das células foliculares após o processo ovulatório;   

DOI  :  10.1590/S1516-35982001000700005

学科分类：兽医学

来源: Universidade Federal de Vicosa

【 摘 要 】

- The objective of this experiment was to study the progesterone plasma concentrations in crossbred heifers, and the correlation with lipid metabolites concentrations. Twenty-six heifers were distributed into two treatments: T1 - treated with 500 mg sometribove zinc (recombinant bovine somatotropin) on day 3 of superovulated estrous cycle and T2 - control. The blood samples were collected during two estrous cycles: normal and superovulated one. The progesterone and metabolic lipids concentrations were determined by RIA and enzymatic method, respectively. The experimental period of the superovulated estrous cycle was divided into three periods: P1 = from estrus to artificial insemination (0 to 15th day); P2 - from artificial insemination to embryo collection (15th to 21st day) and P3 - from embryo collection to the end of the experiment (21st to 27th day). Plasma progesterone concentration differed between the two treatments during P1, but did not during P2 and P3. Progesterone concentration was greater than 60 ng/mL in superovulated heifers. The total plasma cholesterol and HDL concentrations were different between the two treatments, during P2 and P3. There were no correlations among the lipid metabolites and progesterone concentrations during the estrous cycles.

【 授权许可】

CC BY-NC