The objective of this trial was to evaluate production of nursing ewes and yearling female lambs grazing annual ryegrass pasture (Lolium multiflorum Lam) supplemented or not with corn grain or soybean meal. Supplements were fed to animals in a quantity equivalent to 1% of sheep unit (ewe + lamb) body weight. The following variables were investigated: average daily gain, body weight gain per hectare, and stocking rate while for ryegrass pasture the following measurements were taken: forage mass, losses, and […]

The objective of this trial was to evaluate the total replacement of corn with a dry residue extracted from cassava starch on production of crossbred heifers in feedlot. Thirty crossbred heifers averaging 21 months of age and 325 kg of body weight were distributed in two experimental groups and then housed in two stalls. Both groups were submitted to a pre-trial period of 49 days, in which animals received ad libitum sorghum silage and 1.05% of body weight as concentrate […]

One experiment was conducted to evaluate the effect of the addition of multienzymatic complex in diets with different quality of extruded full fat soybeans on the performance of broiler chicks. A total of 960 Avian Farms male broiler chicks were used from 1 to 21 days of age. The completely randomized experimental design utilized a 3 x 2 factorial treatment structure with three extruded full fat soybeans (under, standard and over processed) and two levels of multienzymatic complex addition (0.0 […]

The effect of decreasing dietary CP and supplementation of lysine and methionine+cystine on the performance of 270 laying hens Lohmann LSL strain was evaluated in this trial. The birds averaging 26 weeks of age were allotted to a stocking rate of 562 cm2/bird as a completely randomized design with five replicate of six birds. The treatments were as follows: T1 = control diet (CD) with 16.5% CP, 0.80% of lysine (L) and 0.70% of methionine+cystine (MC); T2 = 15.25% CP, […]

The economic viability of milk production in small family farms (SFF) in São Carlos, SP, from 1998 to 2001, after implementation of several technical and management actions in order to increase production was studied. Six SFF with sizes varying from 4.2 to 27.2 hectares and milk production as the main economical activity were selected. The technical actions implemented in each SFF were: agricultural: a) feeding: cropping and feeding sugar-cane + urea in the dry-season, concentrate supplementation according to the cow […]

Data consisting of 9,374 test day milk yield records from 302 first lactations of Alpina goats were analyzed by random regression models using the Wilmink and Ali and Schaeffer functions and Legendre orthogonal polynomials of third and fifth orders. Models including animal additive genetic, permanent environmental and homogeneous or heterogeneous (three or four classes) residual random effects were compared by Akaike information criterion (AIC), Schwarz Bayesian information criterion (BIC), likelihood ratio test (Ln L), phenotypic, permanent environmental, genetic and residual […]

The trial was conducted to evaluate the effects of feeding increasing levels (0, 10, 20 and 30%) of fish residues silage on the chemical composition of this silage with 30% wheat meal and on the performance of tilapia Nile fingerlings. Nile tilapia filleting residues were handle chopped, grounded and heated during 15 minutes at 105°C. After this procedure, it was added 30% wheat meal relative to residue total weight. The material was stored in plastic silos with 20 liters capacity […]

The objective of this trial was to investigate the effects of different dietary crude protein levels (10.5, 12, 13.5, and 15%) on ruminal pH, ruminal concentration of ammonia nitrogen, ruminal passage rate, nitrogen balance, and microbial protein synthesis in Holstein x Zebu steers. Diets contained 65% of Tifton 85 bermudagrass hay and 35% of concentrate. Four castrated steers averaging 487.3 kg of initial body weight and fitted with ruminal and abomasal cannulas were randomly assigned to a 4 x 4 Latin square design. Each […]

This study was conducted to evaluate the use of ultrasound measurements to predict carcass composition of 115 steers (Nellore, ½ Angus x Nellore, ½ Simental x Nellore, and Canchim) with different frame sizes (small and large) and average initial body weight of 329 kg. After 120 days in a feedlot, animals were weighed followed by ultrasound measurements of rib eye area (RA) and fat thickness (FT). Animals were slaughtered and measurements of carcass RA and FT, weights of hindquarter, forequarter, […]

This trial was carried out from November 2001 to November 2002, aiming at the evaluation of the effects of nitrogen fertilization upon the tiller demography and forage biomass in Brachiaria decumbens cv. Basilisk pastures fertilized with nitrogen and subjected to the same grazing height. The treatments consisted of four nitrogen rates (75, 150, 225 and 300 kg/ha.yr.) applied before the beginning of the experimental evaluations, which were performed during the Summer, Fall, Winter and Spring, 2002. A completely randomized block […]