Eight Holstein cows with body weight 570 ± 43 kg and 60 ± 20 lactation days were distributed in a double Latin square design with four 21-day periods to determine the effects of feeding ground or whole flaxseed with or without monensin supplementation (0.02% on a dry matter basis) on fatty acid profile of butter stored for 15 and 45 days. Ground flaxseed supply, in comparison to whole flaxseed, reduced relative percentages of 16:0, cis7-16:1, 17:0, and cis10-17:1 but it […]

It was used 80 Santa Inês ewes with average body weight 47.79 ± 3.76 kg, mated with Dorper rams and fed concentrated diet with 15.20; 22.48; 26.52 and 35.65% crude protein (CP) on the initial third of pregnancy. Sheep were kept on aruana grass (Panicum maximum cv. Aruana) pasture during the day. At birth, biopsy on the left Semitendinosus muscle were done on male lambs to evaluate the number and diameter of muscular fibers. During finishing phase, lambs were distributed […]

The objective of the present study was to evaluate the nutritional value of elephant-grass silages containing annato byproduct. Twenty intact rams were distributed in a complete randomized block design with five diets (0; 4; 8; 12 and 16% annato byproduct in the silage) and four replications and used to estimate the intake, apparent nutrient digestibility, content of total digestible nutrients and nitrogen balance. The addition of annato byproduct raised the intakes of dry matter (DM), organic matter (OM), crude protein […]

It was evaluated several levels of mineral mixture and urea for crossbred heifers, with Gyr predominance, in the dry season period in Zona da Mata region in Minas Gerais. The experiment was carried out in a Brachiaria decumbens pasture area, divided in five paddocks of 3.5 hectares. It was used 35 heifers distributed in a 2 õ 2 + 1 factorial scheme, composed of two levels of urea (10 and 25%), two levels of mineral salt (10 and 25%) and […]

Forty Holstein cows, with previous reproductive problems, empty, at second or more lactations, with an average milk production of 9,200 kg in the previous lactation and a dry period over than 50 days were distruibuted in two groups to evaluate two protocols of milking induction. It was given to group 1, on days one, eight and 21 recombinant bovine somatotropin-bSTr (500 mg); from day two to eight, estradiol cypionate (0.075 mg/kg BW) and medroxi progesterone acetate (0.25 mg/kg BW); from […]

In order to study the effect of pH on defaunation in the rumen, four rumen fistulated steers were fed a basal roughage diet for a 4-week adaptation period followed by 17 weeks of feeding with three diets and two feeding levels of high concentrate diet. Rumen outflow fluid rate was evaluated in both ration levels. Rumen protozoa population was monitored weekly and when animals became defaunated, protozoa were reinoculated with rumen contents from one of the faunated steers. At every […]

The objective of this work was to evaluate the effect of sugar cane hydrolysis with calcium oxide (CaO) on nitrogen balance, concetrations of urea in the urine and in the plasma and synthesis in microbial protein in goats. Eight castrated male Saanen breed goats, with 22.6 kg average body weight and at four months of age were used distributed in two 4 õ 4 Latin squares, during four 14-day experimental periods. The rations which were formulated to be isoprotein, with […]

This experiment was carried out to evaluate the effects of levels of methionine and lysine on performance and on the internal and external egg quality of commercial laying hens. It was used 256 Hisex White laying hens at 68 weeks of age, which were individually housed in a complete random design in a 4 õ 4 factorial scheme with four levels of lysine (0.482, 0.682, 0.882, and 1.082%) and of methionine (0.225, 0.318, 0.411, and 0.505%) totaling sixteen diets with […]

This research aimed at generating and evaluating prediction equations to estimate metabolizable energy values in poultry offal meal. The used information refers to values of apparent and true metabolizable energy corrected for nitrogen balance (AMEn and TMEn) and for chemical composition of poultry offal meal. The literature review only included published papers on poultry offal meal developed in Brazil, and that had AMEn and TMEn values obtained by the total excreta collection method from growing broiler chickens and the chemical […]

The objective of this study was to evaluate the effects of an enzymatic complex composed of protease, xylanase and amylase, associated or not to betaine in diets for broiler chickens on the performance of birds and economical analysis. It was used Cobb 500 male broiler chicks (924) at average initial weight of 45.8 g fed four diets, each one with seven replicates, in a completely randomized design. Each experimental unit had 33 birds. The diets were: control – corn and […]