ABSTRACT The objective of this study was to evaluate residual feed intake (RFI), residual intake and body weight gain (RIG) and their relationship with other traits of efficiency, performance, and economic analysis of sheep. Lambs (n = 102) were evaluated during 56 days and a herd consisting of 500 ewes was simulated with the mean of dry matter intake (DMI) and final body weight of the lambs, the same as that of the experimental lambs. The lambs were fed hay-based […]

ABSTRACT The current study was undertaken to investigate the ensilage characteristics in triticale lines treated by inoculants and their interaction on fermentation metabolites and rumen degradability. Costs were estimated for growing and feeding whole-crop triticale lines for animal production. Triticale hybrids were harvested at the dough stage of maturity (38% dry matter, DM). Plants were chopped approximately 2 cm after harvest and then treated with inoculants and were ensiled in 1.5-L mini laboratory silos. Two lactic acid bacterial inoculants with […]

The objective of this study was to evaluate the effects of feeding cattle with isoprotein and isoenergetic diets, with and without the addition of polyclonal antibody preparation (PAP), yeasts (YST) or monensin sodium (MON) on performance, carcass characteristics and gain cost in feedlot. Ninety-five 20-month old bullocks (323.3±21.8 kg) were distributed in 25 pens. The completely randomized experimental design had a 2 × 2 + 1 factorial arrangement and the treatments were replicated 5 times. There was no effect of […]

The objective of this work was to economically evaluate the use of the qualitative feed restriction for castrated male pigs during finishing phase by performance and carcass characteristics of 60 animals. Ten pigs were slaughtered at the beginning of experimental phase (89.0 ± 4.2 kg) and other pigs fed rations with levels of qualitative nutritional restriction (0.0, 5.0, 10.0, 15.0 and 20.0%), obtained by inclusion of finely ground rice hulls, until the end of the experiment (127.8 ± 2.9 kg). […]

The economic viability of milk production in small family farms (SFF) in São Carlos, SP, from 1998 to 2001, after implementation of several technical and management actions in order to increase production was studied. Six SFF with sizes varying from 4.2 to 27.2 hectares and milk production as the main economical activity were selected. The technical actions implemented in each SFF were: agricultural: a) feeding: cropping and feeding sugar-cane + urea in the dry-season, concentrate supplementation according to the cow […]

The experiment was conducted to evaluate the performance of beef heifers with average age of ten months and average initial weight of 200 kg, grazing cultivated annual temperate grasses mixtures supplemented with salt plus lasalocid or salt. Spread sowing ocurred on 04/21/95, being the area fertilized with 200 kg/ha of 05-30-15. Nitrogen fertilization in the form of urea (175 kg/ha of N) was subdivided in four applications. The establishment of the pasture occured from 04/21 to 06/08 and the experimental […]

The objective of this experiment was to evaluate the animal productivity and economic return of the use of urea or ammonium sulfate for fertilization of oat (Avena strigosa Schreb) plus ryegrass (Lolium multiflorum Lam.) pasture. The pasture was established on 04/21/94 and the grazing period occured from 06/05 to 11/06/94. The continuous grazing method with variable stocking rate was used. The animals used were beef heifers, with 10 months of age. The amount of nitrogen used was 200 kg/ha, subdivided […]

ABSTRACT – The experiment was conducted to evaluate the animal production and the economic result of the mixtures of oat + ryegrass (MOR), triticale + ryegrass (MTR), rye + ryegrass (MRR) in continuous grazing. Beef heifers with seven months of age and initial 140 kg LW were used. The sowing was broadcast at 04/12/96, using 85 kg/ha of oat, 170 kg/ha of triticale, 140 kg/ha of rye and 30 kg/ha of ryegrass, in the respective mixtures. The area was fertilized […]

The animal performance and productivity in mixtures of annual temperate grasses under continuous grazing condition were evaluated. The mixtures MTR – Triticale (X Triticosecale Wittmack) plus ryegrass (Lolium multiflorum Lam.), MOR – Oat (Avena strigosa Schreb) plus ryegrass, MTOR – Triticale plus oat plus ryegrass, were used. The broadcasting sowing was realized at 04/21/95, being fertilized with 200 kg/ha (05-30-15), being the broadcasting fertilization of 175 kg/ha of nitrogen. The beginning of the grazing occurred at 06/10/95, and was extended […]