The effect of the number of insemination on the fertility of mares inseminated three times/week (Monday, Wednesday and Friday), with extended, cooled and transported semen, from only one stallion, was studied. The mares were inseminated from the detection, by rectal palpation, of a 3.0 to 3.5 cm follicle diameter, in one of the ovaries, until ovulation. The semen was transported in skim milk-glucose extender in a “Celle” modified container; with inseminate doses of 400 x 106 motile spermatozoa at the […]

This work was carried out under greenhouse conditions, in 1997, at Faculdade de Agronomia, Universidade Federal do Rio Grande do Sul (UFRGS). A split plot randomized complete block experimental design was used, with six replications, to evaluate root lengths, average radius, roots surface and dry matter of roots with the objective to evaluate the effect of humic compounds addition in the development of ryegrass roots. Ryegrass forage was grown in pots with irrigated sand with four levels of humic compounds […]

The objectives of this work were to evaluate the effects of five dietary concentrate levels (25,0; 37,5; 50,0; 62,5 and 75,0%) on the efficiency of microbial synthesis, the ruminal ammonia concentrations and pH, nitrogenous compounds balance, and the digest passage rate. Five rumen, abomasum and ileum fistulated F1 Limousin x Nellore bulls, with an average initial body weight of 279 kg, were used in a 5 x 5 Latin square design. Ruminal liquid samples were obtained before and 2; 4; […]

An experiment was conducted with the objective to evaluate the effects of the induction of the drinking water with sweetener consumption in the nursery phase (10th to 30th day of age), on the performance of 270 piglets (male and females) submitted to segregated early weaned and its residual effects on their pre nursery (30th to 45th day) and nursery phases (45th to 62nd day) were evaluated. A completely randomized design in a 3 x 2 factorial arrangement with three treatments […]

Data collected from 1982 to 1999, in Brasília, DF, Brazil, on 1102 head of Brazilian Bergamasca sheep were analyzed to obtain information on performance of the breed in the region. Average lambing interval was 337.94±109.4, but under continuous mating, the average lowered to 282.1days. Ewe lambing rate was 90.13%, frequency of twins 12.63%, number of triplets negligible and sex ratio 1:1. Lambing occurred in all months of the year. Age at first lambing was 588.58±65.31days. Average birth, 3, 6 and […]

A study was carried out to evaluate the effect of dried skim milk (LDP) in weaning diets containing different levels of high-protein soybean meal (PCS), for piglets weaned at 21 days of age. Five diets were compared, from weaning to 14 days post-weaning: T1 – basal diet, soybean meal (FS) as the main protein source; T2 and T4 – replacement of 30 and 50%, respectively, FS from basal diet by PCS; T3 and T5 – replacement of 30 and 50%, […]

Records of 776 Nellore cows from a herd raised at São Paulo State, Brazil, were analyzed to determine the cow mature weight and to estimate their genetic and phenotypic parameters. A previous analysis showed that month and season of birth were not important sources of variation for the cow mature weight. This trait was influenced most by the month when the cows were weighted (April or July) and by the age of the cow (4 to 14 years, at the […]

The objective of this work were to estimate the requirement of lysine from 0 to 6 weeks and to evaluate the posterior effect on the performance of two egg-type strains. Three hundred egg-white pullets from 0 to 6 week of age and three hundred egg-brown pullets from 0 to 6 week of age were allotted to a randomized block design with five treatments and four replicates. A basal diet with 18.50% of crude protein (CP) and 2900 kcal metabolizable energy […]

The objective of this study was to develop equations to predict chemical body composition from zebu cattle, based on chemical composition from carcass representative section. Sixty-three young bulls from Gyr, Guzera, Nellore and Mocho de Tabapuã breeds were used. Body content of protein, fat and minerals were determined on samples from the carcass section that included the 9th, 10th and 11th rib joint (HH joint), and from the remaining body tissues. Protein, fat, energy and ash contents from the HH […]

The work objective was to evaluate the effect of using a thermal insulating material installed as lining under the roof, on broiler performance, on environmental conditions of different broiler chickens stocking densities (10, 16 and 22 birds/m2) and on litter characteristics. The experiment was carried out during the summer, using 3328 chicks of Hubbard strain, distributed in a completely randomized design, in a factorial scheme 3×2 (density and sex), with four replicates for each environment. For the environment comparison a […]