The objective of this work was to determine the apparent metabolizable energy (AME) and nitrogen-corrected apparent metabolizable energy (AMEn) of meat and bone meal (MBM) with different particle sizes (coarse, medium and fine), in two levels of substitution (20 and 40%) for broiler chicks. Two hundred and eighty broiler chicks with 15 days of age were allotted to a completely randomized design, with seven treatments (six treatments with meat and bone meal and a reference diet), four replicates and ten […]

This research was conducted to determine the minimum endogenous losses, the nutritional requirement of phosphorus (P) for maintenance, the biological availability of P from dicalcium phosphate and the variation of plasma P concentration in swine of 20 kg LW. The pigs were fed diets containing different levels of total phosphorus (.30, .40, .51, .65 and .73%). Twenty commercial crossbred barrows were maintained in metabolic cages for a seven-day period of adaptation and seven days of total collection of feces, urine […]

This work was carried out to evaluate the physical characteristics of the digesta throughout the gastrointestinal tract and to exam the conception of critical particle size that escape from the reticulum-rumen (RR), in the dairy bull calves fed diets with different concentrate levels. Thirty two dairy bull calves, one half straightbred Holstein and half crossbreed Holstein-Zebu, slaughtered with average six months of age and 190 kg LW, after fasting for 16 hours. The diets fed libitum were constituted of coast-cross […]

The objective of this work was to evaluate the intake and apparent digestibility of nutrients of elephant grass forages, alfalfa and coast-cross grass hays in adult horses. Eighteen adult Mangalarga Marchador mares were allotted to a completely randomized design with three treatments that consisted on diets with the following forages: T1 – elephant grass, T2 – alfalfa hay, T3 – coast-cross grass hay. The animals were ad libitum fed twice a day. The experimental period was constituted by a phase […]

The milk production, the dry matter intake (DMI) and the NDF passage rate in the gastrointestinal tract in four seasons (July, October, January and March), of crossbred cows, under grazing of elephant grass, submitted to two levels of nitrogen (300 and 700 kg N/ha•year) were estimated. The rotation grazing with three days of occupation and 30 days of resting, using 36 crossbred Holstein Zebu milking cows, in a stocking rate of 6 cows/ha, was used. The estimates of the intake […]

Annual cold season forage species, Avena strigosa Schreb cv. IAPAR-61 Ibiporã, Lolium multiflorum Lam cv. Comum, Lotus subbiflorus Lag cv. El Rincón, Avena sativa L. cv. UPF-16, Trifolium subterraneum L. cv. Woogenellup, Trifolium resupinatum L. var. resupinatum cv. Kyambro, Secale cereale L. cv. BR-1, Trifolium vesiculosum Savi cv. EMBRAPA-28 Santa Tecla and Vicia angustifolia L. were evaluated using a randomized block design with three replicates, from 1994 to 1996, at Terras Baixas Experimental Station, EMBRAPA – Temperate Climate Research Center, […]

With the objetive to compare the genetic group performances for growth traits, data on 2888 yearling weight (YW) and average daily gain from weaning to yearling (AGY) and 1909 long yearling weight (LYW) and average daily gain from 365 day weight to 550 day weight (AGL), from progenies of Nellore cows mated to Aberdeen Angus, (red and black) Brangus, Gelbvieh, Nellore and Simmental sires in the State of Mato do Grosso do Sul were analyzed. The F1 genetic groups were: […]

The nutritional improvement of rice straw fermented by Trichoderma viride, Rhizopus stolonifer and Pycnoporus sanguineus was evaluated using the in situ ruminal degradability technique. The fermentation of the straw with T. viride and water for two weeks increased the degradation rate in 31.5 and 264% when compared with the control and water, and with fermentation of the straw for one week. Also, there was a reduction on the effective degradation time of the straw dry matter in the digestive tract […]

The objective of this work was to study the effect of genetic and non genetic factors on weights at birth (BW), weaning (WW), yearling (YW), 18 months (EW) and 24 months (TW) of age, and weight gains from birth to weaning (GBW), weaning to yearling (GWY), yearling to 18 months (GYE), and 18 to 24 months (GET) of age, of crossbred Canchim x Nellore animals, sired by Canchim (5/8 Charolais + 3/8 Zebu) bulls. The data were studied by the […]

Performance and physiological data from 100 crossbred female piglets, 50 maintained in a termoneuter environment (21.4±1.00°C) and 50 in a high temperature environment (32.0±.88°C), allotted to a randomized blocks design, with five replicates and two animals per experimental unit, fed diets with five levels of digestible energy (3100, 3250, 3400, 3550 and 3700 kcal of dietary ED/kg), were evaluated. The animals which were exposed to the temperature of 32ºC had reduced weight gains and feed, protein and energy intakes. The […]