Larissa Pires Barbosa

Condição hepática de cordeiros mantidos com dietas contendo torta de dendê proveniente da produção de biodiesel

This study was conducted in order to verify the best level of palm kernel cake in the diet for lambs through evaluation of hepatic condition. It was used 32 non-castrated Santa Ines lambs distributed into four diets with palm kernel cake levels of 0.0; 6.5; 13.0 and 19.5% in the dry matter (DM). Every 15 days, blood samples were collected, totalizing five collects for the whole experimental period. It was determined levels of triglycerides, cholesterol, total protein, albumin and globulin, activities of alanine aminotransferase, aspartate-aminotrasferase, and gama-glutamiltransferase enzymes, and serum concentrations of total, direct and indirect bilirrubine. The increase of palm kernel cake percentage in the diet did not affect concentration of triglycerides whose mean value was 40.57 mg/dL. However, cholesterol levels increased as the palm kernel cake was increased in the diets. There was no difference in the total proteins either, but there was an increasing quadratic effect in the levels of albumine and urea and a decreasing linear effect in the levels of globuline. Statistical differences were not observed for activities of alanine aminotransferase, aspartate-aminotrasferase, and gamaglutamiltransferase enzymes, which showed mean values of 6.40; 37.59 and 62.38 UI/L respectively. Similarly, it was not detected influence on the total, direct, and indirect bilirrubine, whose mean values were 0.50; 0.11; and 0.38 mg/dL, respectively. The use of palm kernel cake at levels up to 19.5% does not cause metabolic disorders in lambs.

Parâmetros morfofisiológicos testiculares de camundongos (Mus musculus) suplementados com geleia real

The effects of royal jelly on the morphophysiological parameters of mice (Mus musculus) testicles were studied. Fifty-eight male Swiss mice were evaluated. They were four-month old and were randomly distributed in six treatments: T1: physiological solution, intraperitonial route; T2: 0.1mg of royal jelly, intraperitonial route; T3: 0.2mg of royal jelly, intraperitonial route; T4: distilled water, orally; T5: 0.1mg of royal jelly, orally; and T6: 0.2mg of royal jelly, orally. After 45 days of supplementation with royal jelly, the animals were weighted, slaughtered, and the testicles collected, included in paraffin, and stained with haematoxylin-eosin. No differences among treatments were observed for: body and testicular weights, gonadossomatic index, tubular diameter, epithelial height, total length of seminiferous tubules, tubular length per testicle gram, tubulossomatic and leydigossomatic indexes and the value of volumetric proportion related to tunic, seminiferous epithelium, blood vessel, and lymphatic vessel. Differences between T1 and T3 about the seminiferous tubules and intertubular space were found.The effects of royal jelly on the morphophysiological parameters of mice (Mus musculus) testicles were studied. Fifty-eight male Swiss mice were evaluated. They were four-month old and were randomly distributed in six treatments: T1: physiological solution, intraperitonial route; T2: 0.1mg of royal jelly, intraperitonial route; T3: 0.2mg of royal jelly, intraperitonial route; T4: distilled water, orally; T5: 0.1mg of royal jelly, orally; and T6: 0.2mg of royal jelly, orally. After 45 days of supplementation with royal jelly, the animals were weighted, slaughtered, and the testicles collected, included in paraffin, and stained with haematoxylin-eosin. No differences among treatments were observed for: body and testicular weights, gonadossomatic index, tubular diameter, epithelial height, total length of seminiferous tubules, tubular length per testicle gram, tubulossomatic and leydigossomatic indexes and the value of volumetric proportion related to tunic, seminiferous epithelium, blood vessel, and lymphatic vessel. Differences between T1 and T3 about the seminiferous tubules and intertubular space were found.

Production performance of lactating dairy cows at pasture fed concentrate supplemented with licuri oil

The objective of this study was to determine the optimal level of licuri oil to use in the concentrate of lactating dairy cows on pasture, through growth performance, feed conversion and cost of the supplementation. A total of 16 dairy cows, Holstein × Zebu crossbreed, were kept on Tanzania grass pasture. Cows were divided into four Latin squares, 4 × 4, formed by four experimental periods of 21 days, divided into 17 days for adaptation and four days for data collection. Cows received three kg of concentrate per day at the time of milking, and the treatments consisted of four diets containing licuri oil at levels of 0.0, 1.5, 3.0, and 4.5% of the concentrated dry matter. There was a linear increase in the daily milk yield, corrected to 3.5% fat, and an improvement in the feed conversion of the dry matter and neutral detergent fiber with the inclusion of the licuri oil. The optimal level of licuri oil was 1.5% of the concentrated DM for dairy cows on pasture, whose level has the best profit sale of milk, with positive results in the corrected daily milk production and conversion of the feed nutrients.