The effects of three feeding management were evaluated in the winter months (CN: natural pasture; CNS: natural pasture + supplementation; CNM: improved natural pasture) and three live weight groups (light, medium, heavy) on the subsequent reproductive performance of Brangus heifers with first service to 24/27 mo old. Feeding managements showed differences in the daily weight gain (DWG) during the winter (0.261, 0.376 and 0.679 kg/day) in body weight at the beginning of the reproductive period (302.8, 317.8 and 330.7kg for […]

The effects of multiple supplements with different urea levels on the productive performance and nutritional characteristics, for finishing beef cattle kept in deferred pasture of palisade grass (Brachiaria brizantha cv. Marandu) in the transition period of rainy to dry season were evaluated. The estimated dry matter availability of the pasture ranged from 16,360 to 9,358 kg/ha. In the performance trial, 20 crossbreed bulls, 20 months old and initial 376 kg BW were used. The animals were grouped in lots of […]

The objective of this work was to evaluate the development post weaning and the reproductive performance at 13/15 months old of 56 Hereford and 52 Braford female calves, with average body weight of 126 kg, body condition score of 2.5 and six months old. The animals were kept in natural pasture (CN) during 45 days and after this period, allotted to three feeding systems (SA) for a period of 80 days (06/01/2001 to 08/20/2001): CN + FA – supplementation of […]

The effects of energy levels in multiple supplements on productive performance and nutritional parameters were evaluated of finishing beef cattle grazing palisade grass (Brachiaria brizantha cv. Marandu), during the rainy to dry transition season. For the performance evaluation, 24 crossbred bulls, 18 month old and 330 kg of initial body weight (BW), were distributed to a completely randomized design, in four paddocks of 1.5 ha each. Four treatments were evaluated: mineral mix (MM) and corn and whole soybean grain based […]

The objective of this work was to evaluate the supplementation of ewes 30 days before lambing, of the weaning age (45 or 60 days) of lambs and of the finishing system (on confinement – full diet or hay) or in grass on the profile of Tríceps brachii muscle fatty acid of no castrated male lambs. The animals were slaughter with 30 kg body weight or at 150 days-old. The lambs finished on confinement fed were slaughtered by age and the […]

The objective of this trial was to study the effect of forage defoliation intensity and energy or protein supplementation on chewing activity of beef cattle. Eight Nellore steers fitted with ruminal cannula were used in a rotational grazing system of tanzaniagrass (Panicum maximum Jacq.) with 33 days of resting and three days of grazing. Additional steers were allowed to access the pasture before those with ruminal cannula to maintain the green dry matter (GDM) residue at 1,000 or 4,000 kg/ha […]

The objective of this trial was to evaluate the body weight change as well as the diameters and numbers of muscular fibers of the Semitendinosus muscle of lambs from birth until weaning that were born from Santa Inês ewes supplemented at different stages of gestation. Seventy-three Santa Inês ewes averaging 45.11 kg of body weight (BW) that were bred with three Dorset rams were randomly assigned to the following treatments during pregnancy: 1) control (CO): tanzaniagrass pasture (Panicum maximum Jacq.) […]

Two trials were conducted to investigate different protein and energy sources in multiple supplements fed to growing crossbred bulls. In the first experiment, performance of 20 crossbred growing bulls averaging 17 months of age and 265±18 kg of body weight was evaluated in the dry season. Animals were maintained in 1.5 ha paddocks of Brachiaria brizantha with supplements being offered daily in a proportion of 0.75% of the body weight. A completely randomized design with a 2 x 2 factorial […]

The objective of this trial was to evaluate the effects of different physical forms of soybean on average daily weight gain (ADWG), final body weight (FBW), carcass yield (CY), ruminal pH, and ruminal ammonia concentration on crossbred steers fineshed at pasture. Animals were fed three times per week a supplement containing a mineral mix and one of the following protein sources: ground whole soybean (GWS), whole soybean (WSB) or soybean meal and ground corn (SMGC); steers on control treatment received […]

Equations for predicting elephantgrass (Pennisetum purpureum, Schumack) dry matter intake (DMI) by Holstein x Zebu lactating dairy cows under grazing were developed by stepwise regression analysis. The dataset consisted of results of trials carried out at Embrapa Gado de Leite (Coronel Pacheco, MG, Brazil). The independent variables related to animal factors (days in milk; milk protein, fat and total solids contents and yields; live weight; live weight at calving; milk and fat-corrected milk yield; Holstein x Zebu gene fraction; order […]