The trial was carried out to evaluate different blends of plants extracts in broilers diets. It was used 1,350 broilers distributed in a randomized block design with six replicates and five diets, one without additive and the four others, each containing one of the following additives: 10 ppm of avilamycin; 200 ppm of a product containing essential oils of carnation, thyme, cinnamon and microencapsulated capsicum; 100 ppm of a product containing essential oils of synthetic cinnamaldehyde and carvacrol and capsicum […]

The objective of this study was the evaluation of the inclusion of calcium propionate, sodium butyrate and sodium monensin in the starter concentrate on ruminal parameters and forestomach development in dairy calves. Fifteen newborn Holstein calves were rumen cannulated and housed in individual stalls until ten weeks old, with free access to water, fed 4 liters of milk per day, split in two meals, and starter concentrate ad libitum containing sodium butyrate (0.15%), sodium monensin (30 ppm) or calcium propionate […]

A meta-analytical study was conducted to evaluate the performance and characteristics of the carcass of finishing pigs fed with diets containing ractopamine. Eighteen experiments containing four treatments and 2.991 animals were used. The treatments were composed of 0, 5, 10 and 20 ppm of ractopamine levels. The variables of performance and the quantitative characteristics of the carcass were analyzed. The average duration of the experimental periods was 28 ± 0.32 days. The average initial and final weights were 74.7 ± […]

This work was aimed at evaluating the effects of green propolis, brown propolis and sodic monensin aditives on the carcass characteristics by means of ultrasound and after-slaughter measures such as carcass non-components and yield of retail products from lambs finished in feedlot system. Thirty-two male lambs, with eight animal per treatment, were feedlot during 64 days. The animals were fed a diet with roughage:concentrate ratio of 50:50, composed of Tifton 85 hay grass (Cynodon spp.) and commercial concentrate. The experimental […]

The chemical and fermentative changes of the sugar cane ensiled without or with (control) ground dried ear corn (GDEC) were evaluated during 100 days of storage period. The pH values, buffer capacity (BC), dry matter (DM), crude protein (CP), neutral detergent fiber (NDF), acid detergent fiber (ADF), hemicellulose (HM) ammonia nitrogen in relation to the total nitrogen (N-NH3/TN) were evaluated. The experiment was conducted in a complete randomized design as a factorial (2 × 21) scheme with three replications. The […]

The experiment was carried out to evaluate the fermentative and microbiological dynamics of the tropical grass silages using pelleted citrus pulp (PCP) as an additive. The Tanzania (Panicum maximum cv. Tanzania) and Marandu (Brachiaria brizantha (Hochst. ex. A. RICH) Stapf cv. Marandu) grasses were harvested at 64 and 49 days of regrowth, respectively. The following treatments were evaluated: control (0%), addition of 5% and 10% of pelleted citrus pulp (PCP) in a fresh matter basis, and seven fermentation periods (1, […]

The objective was to evaluate the addition of additives in the ensiling of sugar cane (Saccharum officinarum L.) on the degradation of DM and components of cellular wall and on ruminal fermentation parameters in bovines fed with diets containing these silages. Five rumen-cannulated Nelore steers were allotted to a 5 x 5 latin square design. The steers were placed in metabolic cages and fed diets with 65% forage (%DM). Five silages were evaluated (wet basis): Control sugar cane, no additives; […]

An experiment was conduced with the objective of evaluating the effects of diet formulation methods and supplementation of ractopamine (RAC) on the performance and carcass characteristics of finishing barrows. Sixty commercial hybrid swines were used, distributed in a randomized experimental block design, in a 2 x 3 factorial arrangment, with two levels of RAC and three methods of diet formulation. Supplementation with RAC improved the final weight, daily weight gain (DWG) and feed conversion (FC) of the finishing barrows. Addition […]

The ileal digestibility and retention of some nutrients and the energy content were evaluated in diets for broilers containing mannan oligosaccharides (MOS) and/or enzymatic complex (EC). Two hundred and seventy-five birds were used in a randomized complete block design, with factorial arrangement (2 x 2 + 1) of the treatments, with two MOS levels (0 and 0.1%), two EC levels (0 and 0.05%) and a positive control diet with antibiotics. Chromic oxide (0.5%) was added to the diets to estimate […]

The purpose of this study was to evaluate herbal extracts as alternatives to antimicrobial growth promoters for weanling pigs based on growth performance and organ weights. A 35-d randomized complete block design experiment was carried out to compare five treatments: control (C) – basal diet; antimicrobial (A) – basal diet supplemented with colistin + tiamulin (75 ppm of each); herbal extract – basal diet supplemented with 420 ppm of extracts of clove (Ec); oregano (Eo) and clove + oregano (Ec […]