To estimate the magnitude of sire of fetus (SOF) effects on productive and reproductive traits in females of Pitangueiras breed, 2287 lactations of 618 cows, daughters of 82 bulls, mated with 68 sires were analyzed. The statistical analyses were made using LSMLMW program (Mixed Model Least Squares and Maximum Likelihood Computer Program). Sire of fetus (SOF) did not affect the milk production in the subsequent lactation, however its effect was significant for the percent fat and production, days open, gestation […]

This experiment was conducted to evaluate the digestibility and total digestive nutrients (TDN) of poultry litter made from different types of absorbent materials. Twenty castrated sheeps of Morada Nova breed were allotted to metabolic cages and fitted with bag device for total feces collection. The experimental design was a randomized block with four treatments and five replicates. The treatments consisted in alternatives sources of poultry litter: A – wood shavings, B – elephant “Napier” grass, C – corncob with husks […]

The ruminal dry matter (DM) and crude protein (CP) degradability of some feeds were evaluated by the in situ technique, using three Holstein cows. The concentrate feeds were ground through a 2 mm screen and the forage and the cassava root, in 5 mm screen, and incubated in nylon bag (53µ). The effective degradability (ED) of DM (5%/h) for corn silage, sorghum silage, corn, sorghum, wheat bran, triticale, cassava scraping, citrus pulp, soybean meal, cottonseed meal and meat and bone […]

This work was carried out to isolate, characterize and identify Lactobacillusacidophilus strain from calves feces with 1- 3 days of age, collected directly from the rectum. The following tests for the characterization of the isolates were done: cellular morphology, gran test, catalase, gas production from glucose, growth at 15 and 45ºC, Litmus milk reduction, growth in culture medium with 4 and 8% sodium chloride, arginine hydrolysis, nitrate reduction and fermentation of several “carbohydrates”. From a total of 526 initial isolates, […]

A performance trial was conducted to determinate the nutritional requirement of lysine for laying Japanese quails (Coturnix coturnix japonica). Two hundred and eighty eight Japanese quails with 51 old days, during four cycles of 21 days, were allotted to a completely randomized design, with six treatments and six replicates, and the experimental unit constituted by eight quails. One control diet, with appropriated levels of the crude protein and amino acids and others five diets, with increasing levels of lysine (.65, […]

This research was carried out to evaluate the chemical composition of cipó-de-escada (Bauhinia glabra Jacq) hay at 42, 56, 70, 84 and 98 days of growth after uniformity cut. A completely randomized experimental design, with five treatments and four replicates, was used. The hay was obtained from an area of native pasture lowed and cleaned of 7200 m2, which were subdivided in plots of 360 m2. There were no differences for the content of dry matter (DM), organic matter (OM), […]

To evaluate the effect of previous days dry (PDD) and days open (DO) on milk (M305) and fat (F305) yield in 305 days and milk (MDAY) and fat (FDAY) yield per day of calving interval in Holstein cows, a data set contained 5,454 lactations from the Minas Gerais Holstein Cattle Breeders Association were analyzed. The model included effects of: nucleus (5), heard-year: nucleus, genetic group (1- 31/32 Holstein, 2- upgraded Holstein with known genealogy and 3- pure of origin Holstein), […]

The objective of this work was to determine the amylase activity in the chyme present in the medium and posterior intestines or in the rectum of three tropical freshwater Teleostei species: piracanjuba, Brycon orbignyanus (Valenciennes, 1849), piau, Leporinus friderici (Bloch, 1974), omnivorous, and surubim, Pseudoplatystoma coruscans (Agassiz, 1829), preferably carnivorous, aiming to provide nutritional reference data for the adjustment of the artificial feeding systems. The amylase activity was determined by the use of BIOCLIN kit with a modified methodology by […]

The objective of this work was to select strains of Lactobacillus acidophilus to be used as a probiotic in calves.Strainsof Lactobacillus acidophilus (12) were isolated from calves feces and selected according to their acidifying capacities, resistance to hydrochloridric acid, lysozyme, phenol, biliary salt, antibiotics used in the calves productions, capacities of growing in ruminal liquid, and their capacities to inhibit a strain of enteropathogenic Escherichia coli in vitro. The isolates were classed as slower in lactic acid production. In test […]

This work was carried out to evaluate the effect of the season of the year, from March/96 to March/97, on the rectal temperature (RT) and breathing rate (RR) of rams from Bergamacia, Corriedale and Hampshire Down (Hd) breeds, with three-four years of age. Twenty-four rams, nine Bergamacia (Be) eight Corriedale (Co) and seven Hampshire Down (Hd), were used. The month of the year had a significant effect on RT for Hd breed. The observed rectal temperatures was higher in the […]