The intake, total apparent digestibility of nutrients and milk production and composition were evaluated in early lactation cows fed with increasing levels (20; 23; 26 and 29% natural matter – NM) of crude protein (CP) in concentrate. Twelve crossbred Holstein cows were assigned to three latin square (4×4), in four periods of 15 days each (one week of adaptation). The feeding consisted of 60% of cow silage and 40% of concentrate. The intakes of dry matter (DM), CP, neutral detergent […]

Equations for predicting elephantgrass (Pennisetum purpureum, Schumack) dry matter intake (DMI) by Holstein x Zebu lactating dairy cows under grazing were developed by stepwise regression analysis. The dataset consisted of results of trials carried out at Embrapa Gado de Leite (Coronel Pacheco, MG, Brazil). The independent variables related to animal factors (days in milk; milk protein, fat and total solids contents and yields; live weight; live weight at calving; milk and fat-corrected milk yield; Holstein x Zebu gene fraction; order […]

Data of 320 animals were obtained from eight comparative slaughter studies performed under tropical conditions and used to estimate the total efficiency of utilization of the metabolizable energy intake (MEI), which varied from 77 to 419 kcal kg-0.75d-1. The provided data also contained direct measures of the recovered energy (RE), which allowed calculating the heat production (HE) by difference. The RE was regressed on MEI and deviations from linearity were evaluated by using the F-test. The respective estimates of the […]

This experiment was carried out to evaluate the dry matter ingestion, average daily gain, feed:gain ratio, live weight at slaughter and days in trial in pure Santa Inês and ½Dorset ½Santa Inês lambs, submitted to isoenergetic (76.59% TDN) and isoprotein (17.48% crude protein) diets with different sources of vegetable oil (soybean oil, canola and linseed) and a control diet (without vegetable oil inclusion). The forage:concentrate ratio was 30:70, and oat hay was used as forage. Digestibility analysis was performed, using […]

Performance, plasmatic parameters and carcass traits of 24 3/4 Simmental 1/4 Nellore steers with 370 kg initial average weight was evaluated. The experimental diets were composed by corn silage (55%) and concentrate with sunflower meal as protein source and ground corn as energy source (MI). Ground corn was partially substituted by soybean hulls (CS) or by corn meal (FGM). The period of intake and average weight gain evaluation was 49 days. Blood samples were collected to measure plasmatic parameters: glucose, […]

Feed intake, partial and total digestibility and nitrogen balance were evaluated in confined steers. Three crossbreed steers, rumen and duodenum cannulated, were allotted to two 3 x 3 Latin square experimental design. The experimental diets were composed by corn silage (60%) and concentrate with sunflower meal as protein source and ground corn as energy source (MI). The ground corn was partially substituted by soybean hulls (CS) or by corn germ meal (FGM). Lignin and indigestible ADF (iADF), NDF (iNDF) and […]

Six half-bred ½ Holstein-Zebu steers, fistulated in the rumen and abomasum, were randomly assigned to two 3 x3 Latin squares (animal, ingestion regime – 1.5, 2.0 and 2.5% LW and period) to determine the intake and total and partial digestibility of total carbohydrates (CHO), neutral detergent fiber (NDF) and non fiber carbohydrates (NFC). Chromic oxide was used as a marker to determine the digestibilities. Animals were fed diet with 60% Tifton-85 bermudagrass (Cynodon spp.) hay and 40% concentrate mixture (corn […]

This work was carried out aiming to evaluate the nutritive value of byproducts of fruit processor. Byproducts of pineapple, west indian cherry (WIC), guava, passion fruit and melon were evaluated. Twenty sheep castrated males, with average weight of 34.5 kg, were assigned to a completely randomized design with five treatments (byproducts) and four replications. Dry matter intakes (DMI) of byproducts of guava, passion fruit and melon by the animals were similar but higher than WIC byproduct. The highest crude protein […]

The objective of this experiment was to verify the effects of soybean oil and/or ethanolic extract of propolis, in the diets of dairy goats, on intake, on digestibility of nutrients, on milk production and composition and some ruminal parameters. Sixteen Alpine female goats were used, in which four animals fistulated in the rumen. The animals were allocated in four 4×4 Latin squares, in a 2×2 factorial arrangement of treatments. It was added to the concentrate 0 or 120 g of […]

The effect of monensin on milk production, milk composition and body condition score of buffaloes cows in early lactation was evaluated. Twenty four Murrah buffalo cows were submitted to two treatments T1 (0 mg of monensin/buffalo cow/day) T2 (300 mg of monensin/buffalo cow/day) evaluated during the 150 first days of lactation. The total ration was composed by sorghum silage, elephant grass, and concentrate. The effect of monensin on milk production, milk composition and body condition score of buffaloes cows in […]