ABSTRACT The objective of this study was to evaluate the effects of replacing choline chloride with a plant source of choline on the locomotor system, liver health, and development of breast myopathies in broilers aged 1-42 days of age. We allocated 1,120 one-day-old Cobb broilers to four treatment groups and fed them commercial diets based on corn and soybean meal. The treatments included choline in the form of 1,800.00 mg/kg choline chloride; 1,350.00 mg/kg choline chloride + 450.00 mg/kg herbal […]

ABSTRACT The objective of the present study was to evaluate production and egg quality as well as the intestinal morphometry of laying hens fed diets supplemented with marine microalga Dunaliella salina. Six hundred laying hens were allocated based on a completely randomized design into five treatments (0, 0.25, 0.50, 0.75, and 1% inclusion of D. salina biomass) with 12 replicates of 10 hens per treatment. The experiment was divided into three periods of four weeks each, totaling 84 days. During […]

ABSTRACT This study aimed to evaluate the hematological profile, hepatic function, and histopathology of mixed-sex broilers fed rations supplemented with microencapsulated essential oils from Cymbopogon flexuosus (lemon grass) and Lippia rotundifolia (chá-de-pedestre). One hundred and fifty Cobb chicks were housed in cages from 1 to 42 days of age in a completely randomized design, with six replicates with five chickens in each of five treatments (150 total chicks): basal diet without antibiotic growth promoter (negative control), diet with enramicina and […]

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 Inês 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, […]

This experiment was carried out to evaluate the reproductive and zootechnical performance, and lipid deposition in the liver tissue of the Nile tilapia males fed diets containing different levels of digestible energy obtained from inclusion of soybean oil. Four hundred 400 broodfish (300 females and 100 males) were assigned to a completely randomized design composed of five levels of digestible energy (2,700, 2,950, 3,200, 3,450 and 3,700 kcal digestible energy.kg of feed-1) and four replications. The breeding were fed diets […]

Two experiments, with 288 and 192 birds, half males and half females, respectively, were carried out to determine the zinc (Zn) requirements for broilers in the growing (from 22 to 42 days) and finishing (from 43 to 54 days) phases. Two basal diets were formulated to meet the birds´ nutritional requirements, except for Zn, that was deficient at the levels of 13.0 and 12.0 ppm, respectively. In both experiments it was evaluated Zn supplementation levels, from a commercial Zn oxide, […]

The experiment was carried out to evaluate the reproductive and animal performance and lipids deposition in the liver tissue of the Nile tilapia female, fed diets containing different levels of digestible energy, obtained by soybean oil inclusion. Three hundred breeding females and 100 breeding males were used, distributed in a completely randomized design with five treatments and four replications. The broods were fed diets containing 35% crude protein and 2,700; 2,950; 3,200; 3,450 and 3,700 kcal energy digestible/kg feed. The […]

An experiment was conducted with 2,112 Ross male broiler chicks, with the objective to evaluate the use of non-nutrient additives (antibiotic, prebiotic and symbiotic) on performance and carcass characteristics of broilers. The birds were distributed in a complete randomized design in 2 × 6 (corn × additive) factorial arrangement, with 12 rations, eight replicates and 22 birds per experimental unit. Diets were based on corn and soybean meal, using in the half the rations standard quality corn (Rations 1 to […]

Three hundred and eighty four broilers chicks, half males and half females, were used to determine the zinc requirement for broilers in the initial phase (from 8 to 21 days). A basal diet was formulated that meet the nutritional requirements, except for Zn level, which was kept deficient at 12.00 ppm. The treatments consisted of Zn supplementation to the basal diet with Zn oxide, in the levels of 12.0, 37.0, 62.0, 87.0, 112.0 and 137.0 ppm of Zn. The characteristics […]

The objective of this work was to evaluate the influence of the addition of CLA in the diet on Nile tilapia productive performance, chemical and fatty acids composition. Eighty reversed fish with 109 ± 10 g were used, distributed in eight tanks (0.8 m3 each) in density of ten fishes/tank, during 90 days. It was evaluated the inclusion in the diets of 2% of CLA (Luta-CLA®-BASF, Brazil) with 60% of isomers (cis-9,trans-11 and trans-10,cis-12) and 40% of vehicle (oleic acid […]