ABSTRACT We aimed to evaluate the impact of using embryo transfer (ET) information on weaning weight estimated breeding values (EBV) and its accuracy. Data from Hereford and Braford cattle, raised under extensive conditions in Southern Brazil, were used. A model that included ET information in addition to maternal (genetic and permanent environmental) effects as a function of foster dams was compared to a model without ET information. Accuracy of both bulls and calves increased due to inclusion of ET records […]

The effects of diet adaptation protocol by steers and of feeding four dietary urea levels (0, 0.65, 1.3, and 1.95%, dry matter – DM basis) on intake and total apparent digestibility of DM, organic matter (OM), crude protein (CP), ether extract (EE), total carbohydrates (CHO), neutral detergent fiber (NDF), nonfiber carbohydrates (NFC) and total digestible nutrients intake (TDN) for Holstein, ½ Holstein-Guzera, ½ Holstein-Gir and Zebu steers were evaluated in this trial. The animals were assigned to four 4×4 latin […]

The objective of this trial was to study the production of thirty-five crossbred goats: 1/2Brown Alpine x 12 1/2Moxoto (1/2BA-M), 11 3/4Brown Alpine x 1/4Moxoto (3/4BA-M), and 12 Tricross (1/2Anglo Nubian x 1/4Moxoto x 1/4Brown Alpine). After birth, the kids were separated from their mothers. Goats were milked twice a day and milk composition determined weekly. Animals were housed in collective pens and received a diet composed of sorghum silage (ad libitum) plus concentrate that were formulated to allow 2.5 […]

The carcass characteristics of bovine Indubrasil and crossbred F1 Holstein-Gir and Holstein-Guzera in the growing and finishing phases were evaluated. The carcass yield and the percentages of the basic cuts, carcass length, subcutaneous fat thickness, loin eye area, muscle, fat and bones percentages were also determined. The genetic groups showed no influence on hot carcass yield in relation to live weight and empty body weight, as well as in yields of the basic cuttings, the hindquarter, the forequarter and pistol […]

The dry matter (DMD), organic matter (OMD) and gross energy digestibility (GED) and the total digestible nutrient (TDN) of the total ration were evaluated. The ration was composed by 44.3% of Brachiaria hay, 55% of concentrate and 0.7% of mineral mixture, supplied to different genetic groups (Gyr, Nellore, Guzerat, Santa Gertrudis and Caracu), using total collection of feces and the internal marker (lignin in acid detergent – ADL) as the digestibility techniques. The data were analyzed in a completely randomized […]

This study was conducted to evaluate the difference among genetic groups and the effects of diets with different levels of metabolizable energy for broilers. The performance and carcass quality of seven genetic groups (M1C1, C1C1, C2C2, M1C2, C2F1, C1F1 and M1F1) of broilers obtained from the cross among two lines developed by UFV (M1 and F1) and two mainly trade mark lines (C1 and C2) were determined. The chickens were randomly allocated to 84 different boxes (15 birds/box and 12 […]

The objective of this experiment was to evaluate the performance of three genetic groups of broiler chicks, obtained at UFV, called UFV1, UFV2 and UFV3, fed diets with different crude protein (CP) levels. Two hundred and forty chicks of each genetic group, totaling 720 chicks, were allotted to 48 floor pens up to 42 days of age. At the initial phase (1 to 21 days), all chicks were fed an unique diet. At the final phase (22 to 42 days), […]

The objective of this experiment was to evaluate the carcass yield of three genetic groups of broilers chickens, obtained at UFV, called UFV1, UFV2 and UFV3. The chicks were fed an unique diet during the initial phase period and isocaloric diet containing 16.5, 18.0, 19.5, and 21.0% of crude protein (CP) at the finishing phase. Two hundred and forty chicks of each genetic group, totaling 720 chicks, were allotted to 48 floor pens up to 42 days of age. At […]