The aim of this work was to use association rules to identify forces that govern bull trade with genetic evaluation by Programa Nelore Brasil. Those rules permit to highlight patterns implicit in the transactions of large databases, which indicate determining causes and effects of supply and trade of bulls. In the analysis, it was considered 19,736 records of traded bulls, 17 farms and 15 attributes related to expected differences on the progenies of sires, place and time of sale. A […]

The objective of the present study was to evaluate the genetic structure of Gyr cattle selected for milk production. Files of pedigree and production were composed of 27,610 animals. The ENDOG program was used for the calculation of individual inbreeding coefficient (F) and coefficient of average relatedness (AR), effective number of animals(Ne), effective number of founders (fe) and ancestors (fa), and generation interval (GI). Individual inbreeding coefficients and average relatedness in the population were 2.82% and 2.10%, respectively. It was […]

The effects of available phosphorus levels on performance and carcass composition of barrows with high genetic potential for meat deposition were evaluated. Sixty swine with initial body weight of 59.84 ± 1.64 kg were assigned to a randomized block experimental design, with five diets (0.097; 0.190; 0.280; 0.370 and 0.460% aP), six replicates and two animals per experimental unit. Experimental diets and water were supplied ad libitum until the end of the experimental period, when animals reached 96.64 ± 3.68 […]

The experiment was conducted aiming at evaluating the levels of supplementation of vitamin D from two sources (vitamin D3 and 25-OHD3) on diets for broiler chickens raised in cages. It was used 1,500 line Cobb-700 male chicks at one day of age, housed in metal cages (100), with appliances and management fitted for bird raising. In each growing phase (starter, from 1 to 21 days; growing, from 22 to 38 days, and finishing, from 39 to 45 days), it was […]

An experiment was carried out to evaluate the influence of glutamine on the carbon turnover in the intestinal mucosa of weaned piglets. Nine matrices received diets predominantly composed by photosintetic cycle C4 plants during the gestation (d‰13C = -17.12) and lactation (d‰13C = -19.26). The piglets were weaned at 21 days of age, and 68 animals were fed rations composed by photosintetic cycle C3 plants (d‰13C = -25.12). The piglets were distributed at random in two treatments: one diet without […]

For performance evaluation of broiler chickens fed different levels of meal of tilapia industrial filleting waste (0, 2, 4, 6 and 8%), 480 chicks at 1 day of age were used in a completely randomized design with five experimental diets, six replicates and 16 birds per experimental unit. Weight gain, final weight, average feed intake, feed conversion and mortality from 1 to 21 days of age and from 1 to 42 days of age were evaluated and in the end […]

This experiment was carried out to evaluate the effects of two vegetal oils sources, charcoal and vitamin E on performance and lipid levels in blood and eggs of commercial laying hens. It was used Lohman Brown and Lohman LSL laying hens at 58 weeks of age. The experiment lasted 84 days split in three 28-day periods and it was carried out in a complete random design in a split-plot scheme, in a 8 x 2 factorial scheme in the plots […]

With the objective of evaluating the quantitative characteristics of carcasses of equines, 72 undefined breed equines were classified by body weight, age and sex. It was determined cold carcass weight, cooling loss, carcass yield, front and back weight and muscle/bone ratio. The statistical model used was a completely randomized design in a 2 x 3 x 3 factorial scheme, with the two sexes, three age ranges and three ranges of body weights. The highest weight range corresponded to the highest […]

This work was carried out to evaluate the use of Bacillus subtilis probiotic C-3102 (1010cfu/g) in diets with or without growth promoters on the performance of broilers in the period from 1 to 42 days of age. It was used 1,200 Cobb line broilers, distributed in a complete randomized block with five diets: negative controller (without promoters); Bacillus subtilis (30 g/t ration); Bacillus subtilis (50 g/t ration); Bacillus subtilis (30 g/t ration) + colistin (10 ppm); avilamycin (10 ppm) + […]

It was evaluated the biochemical serum profile of broilers fed rations supplemented with α-amylase produced by two microorganisms. Two extracts were produced, one was produced with a-amylase obtained from Cryptococcus flavus in a commercial yeast-based medium and the other with Aspergillus niger HM2003 produced in soybean protein and commercial starch medium with activity of 9.58 U/mL and 10.0 U/mL, respectively. A total of 360 Cobb 500 male 1-d broiler chicks with 49.72 ± 0.68 g of initial body weight were […]