Yeasts isolated from beef heifers with ringworm

Bioactivity of endophytic bacteria and yeasts isolated from Thymus

Endophytes are important resources of bioactive compounds and due to their potential in theproduction of secondary metabolites, they are regarded as a potential reservoir ofbiotechnological applications. In this study, the bioactivity of bacteria and yeasts endophytesresiding in Thymus sp. was evaluated. During April to October 2011, symptomless and healthytissues of Thymus sp. were collected. ...

Reproductive Management of Beef Heifers

Quality of beef from semi-intensively fattened heifers and bulls

Used were 15 bulls and 15 heifers of the Black-and-White Polish Holstein-Friesian breed, semiintensively fattened, with the aim of evaluating the effect of sex on the selected traits of quality of beef. Bulls were slaughtered at the mean age of 536.2 days and 523.1 kg body weight, and heifers at 528.7 days and 459.7 kg body weight, respectively. After slaughter and post-slaughter treatment, the...

Factors influencing calving difficulty in beef heifers.

Records of 547, 2-yr-old heifers of three breed groups were used to evaluate the relative influence of dam's body and pelvic measurements, calf birth weight, sire birth weight and some relative measures (ratios) of calf birth weight and dam weight at calving on calving difficulty. The data were analyzed by regression and least squares procedures. The full model explained 32.5% of the variation ...

Levels of Supplementation for Grazing Beef Heifers

The objective of this experiment was to evaluate the effect of providing different levels of a supplement on the nutritional characteristics and productive performance of heifers on pasture during the rainy-dry transition and dry season in Brazil or tropical area. Thirty crossbred heifers with predominance of Zebu breed were used in a completely randomized experimental design. Treatments consis...