The data analyzed were live weights of females (3475) of six genetic groups obtained by crossing red and white Holstein-Friesian (HVB) x Guzerá (Guz), with expected HVB gene fractions 1/4, ½ (F1) , 5/8 (from inter se mating), 3/4, 7/8 and > 31/32. The data were separately analyzed for 374 calves (up to age 120 d) and 524 heifers (121 to 550-d-old), using Proc Mixed of the SAS package, under a model including the fixed effects of genetic group (G), […]

The aim of this work was evaluate the effect of supplementation with different energetic sources, on growing steers performance and economical viability, and also evaluate the structure and chemical composition of Signalgrass (Brachiaria decumbens) from July to November, on São Paulo state west region. Forty-two animals (Nelore) and three pastures of 7.2 ha each, were used. The energy sources used for supplements were: corn and cob with husks (CCH), cassava meal (CM) and soybean hulls (SH); each treatment had cottonseed […]

The performance of steers fed diets using as roughage rice straw treated with anydrous ammonia, rice straw+urea, sugar cane + urea and sorghum silage were evaluated. Sixteen PO Simental steers, averaging 400 kg initial LW, were assigned to a completely randomized design. The experiment last 88 days, 15 days of adaptation and 61 experimental days, divided in three periods of 21 days. Total DM intake, that ranged from 7.1 to 10.0 kg/day, differ among treatments, where higher intakes were observed […]

The effects of month, year, order and type parturition on mating weight (MW), weight gain during gestation (WG), respectively, of 753 and 527 Caninde native goats, 463 and 333 exotic Anglo Nubian and 374 and 296 Alpine goats, 151 and 87 crossbred ½ Alpine ½ SRD, and 92 and 73 ¾Alpine ¼SRD goats, raised in the Experimental Station of the Governmental Research Institute (EMEPA-PB), Soledade – Paraiba – Brazil, in the period from 1980 to 1994. The effect of month […]

The work was carried out to evaluate the effect of animal sex, genetic group and slaugher weight on fedlot lambs performance. One hundred and three male and female lambs, purebred Santa Inês (SS) and crosses between Santa Inês and Texel (TS), Ile de France (FS) and Bergamacia (BS) were fedlot in individual cages. Diet and orts were daily collected to calculate the intakes of dry matter (MS), metabolizable energy (EM), digestible protein (PD) and neutral fiber detergent (FDN). The lambs […]

The objective of this experiment was to evaluate the food intake, food conversion and weight gain of Braford calves, weaned with 88 days of age, fed with triticale silage associated to 35, 45, 55 or 65% concentrate, dry matter basis. The animals were fed ad libitum, twice daily with the 15% CP diet. The experiment was conducted during 84 days, divided in four periods of 21 days. Average daily intakes of dry matter (DMI) expressed in kg (DMID), per 100 […]

Sixteen Santa Inês sheep were randomly allotted to four treatments (T0 = 81% tifton hay (TH) and 19% concentrate (soybean meal and corn); T27 = 27% egeria hay (EH), 54% TH and 19% concentrate; T81 = 81% EH and 19% concentrate) to evaluate the effect of Egeria hay inclusion in the diet on voluntary intake, weight gain and feed efficiency. Voluntary intake reduced and body weight gain was not affected by EH inclusion. During the experimental period, weight gain was […]

The objective of the experiment was to evaluate the feedlot performance of 5/8 Nellore-3/8 Charolais steers slaughtered at 425, 467 and 510 kg. The steers presented at the beginning of the confinement average age of 660 days, live weight of 361 kg and body condition score of 2.9 points. The animals were fed with a 60:40 roughage:concentrate diet, containing 10.25% of crude protein (CP), 72.18% of total digestible nutrient (TDN) and 3.18 Mcal of digestible energy (DE)/ kg of DM. […]

The objective of the experiment was to evaluate the performance of Charolais (CH) and ½Nellore (NE) ½CH (produced by CH cows), NE and ½CH ½NE (produced by NE cows) calves, mantained with the cows until weaning, on native pasture (NP) or winter (oat + italian rye grass) and summer (alexander grass) cultivated pasture (CP). Sixty straigthbred or crossbreds calves were used, and weighted at birth; 14; 42; 70; 98; 126; 154; 182 days; and at weaning. The cows milk yield […]

The research was carried out to evaluate the performance of kids submitting of different periods of suckling. Forty-two Alpine goats crossbred (21 males and 21 females) were assigned to three treatments with 14 replicates: T1 weaning at 56; T2 weaning at the 70 and T3 weaning at the 84 days old. The liquid diet (goat milk) was fed up to 35 days old, in two suckling and, after, the animals received the same quantity of goat milk at one suckling, […]