Eighty-three swine females were inseminated with semen from three boars, diluted in Beltsville Thawing Solution (BTS), Modified-Zorlesco (ZOR) and BTZOR (a medium developed at Universidade Estadual de Maringá). Twenty eight females were inseminated with BTS, 28 with ZOR and 27 with BTZOR, with the objective to evaluate the indexes of heat return and farrowing rate, and the averages numbers of born piglets and born alive piglets from the inseminated females. The females inseminated with ZOR showed the best farrowing rate […]

Fifteen male castrated sheep were used during a period of 22 days to determine the bromatological composition, intake and in vivo digestibility of diets with increasing levels (0, 50 and 100%) of “catingueira” hay (CH). A completely randomized experimental design with three treatment and five replications was used. “Catingueira” hay presented a 91.5% dry matter (DM), 93.89% organic matter (OM), 11.25% crude protein (CP), 4.31% ether extract (EE), 45.47% neutral detergent fiber (NDF), 37.08% acid detergent fiber (ADF), 8.39% hemicellulose […]

The chemical composition, crude protein fractions (A, B1, B2, B3 and C) and total carbohydrate fractions (A, B1, B2 and C), and respective degradation rate of B1, B2 and B3 protein fractions and A + B1 and B2 carbohydrate fractions of Tifton 85 bermudagrass hay from plants harvested with 28, 35, 42 and 56 days of regrowth, fertilized with 75 kg/ha/cut of N, were evaluated. The protein content of hays from 28 to 56 days of regrowth ranged from 17.58 […]

Forty five adult ewes were used, 15 for each of the three breeds: Hampshire Down (HD), Texel (TE) and Ile de France (IF). These animals were measured for rectal temperature (Rt), skin temperature (St), fleece temperature (Ft), temperature of the coat surface (Cst) and respiratory rate (Rr), Air temperature (At), air vapour pressure (Avp), wind speed (Ws), globe temperature (Gt) and radiant heat load (Rhl) were also recorded. The Thermal Comfort Index equation was used: TCI = 0.6678Ta + 0.4969e […]

Simulated data were used to verify the effect of the connectedness on the accuracy of progeny and performance tests. The simulated genome was formed from a quantitative trait governed by 500 loci. Significance herd effect (9 herds) by 5% probability F test was simulated. Data sets with 0, 15, 30, 60, 90 and 100% of connectedness for heritabilities 0.10, 0.30 and 0.60 and for different progeny sizes (9, 54 and 90 progenies/sire) were simulated. In each generation nine males were […]

The objective of the present study was to evaluate the effects of the non-nitrogenous sources and the addition of Sacharomyces cerevisiae to sugarcane based diets on the intakes and the total and partial apparent digestibilities of dry matter (DM), organic matter (OM), crude protein (CP), ether extract (EE), total carbohydrates (TC), neutral detergent fiber (NDF) and non- structural carbohydrates (NEC). The nitrogen balance and ruminal parameters were also evaluated. Four Holstein-Zebu young bulls rumen and abomasal fistulated were allotted to […]

This experiment was conducted to evaluate the replacement of different corn grains (dry corn grain, reconstituted grain corn silage and high-moisture grain corn silage) on th epreformance of feedlot lambs. Sixty lambs (males and females) were randomly assigned to five treatments with twelve replicates and fed iIsoprotein and isoenergetic diets, in different treatments: T1= (RCGS) reconstituted grain corn silage; T2 = (DCG) dry corn grain; T3 = 50% RCGS + 50% DCG; T4 = (HMGCS) high-moisture grain corn silage; T5 […]

The objective of this trial was to evaluate the biological and economical feeding systems feasibility during critical periods as an alternative to reduce the slaughter ages the animals raised in Brachiaria decumbens pastures. Sixty F1s Angus-Nellore weaned calves were randomly assigned in the following treatments: A) no supplementation; B) supplementation during the dry season after weaning; C) supplementation during the second dry season of the animal’s life; D) supplementation during the both dry seasons; and E) supplementation during the first […]

The experiment was conducted to evaluate, the forage losses and litter accumulation, in a pasture of Tanzania grass (Panicum maximun Jacq cv. Tanzania) managed in different sward height levels. The studied levels of sward heights (treatments) were: 29.8, 32.0, 47.1, 51.5, 57.9, 62.7, 72.6 and 80.0 cm, in a completely randomized design and two replications. The litter accumulation rate, litter accumulation and forage losses were similar in all heights. The percentage of senescent forage in the plant canopy was influenced […]

The chemical composition and the preservation of sugar cane byproducts treated with 0, 1, 2 and 4% (N-ammonia in dry matter) using anhydrous ammonia, urea and ammonia sulfate, on a factorial arrangement in a completely randomized design were studied. No alteration was observed in dry matter content of sugar cane bagasse in function of sources of ammonia. The sources of ammonia decreased neutral detergent fiber (NDF) content of sugar cane bagasse, however; only the ammonia sulfate decreased the NDF of […]