Abstract The objective of this study was to evaluate the effect feeding pelleted or mash ergot contaminated grain continuously intermittently on performance and blood parameters backgrounding steers. Sixty black angus steers (300 ± 29.4 kg) were used in a complete randomized (60% barley silage:40% concentrate DM basis) 84 d study. Steers randomly assigned 4 different treatments housed individua...

ABSTRACT This study aimed to evaluate the productive performance, dry matter intake, apparent digestibility and ingestive behavior of feedlot calves fed corn silage from feed out face trench silos with different types sealing. The animals were divided into three treatments four repetitions: Conventional seal - double-sided polyethylene 110µm thickness; Double-sided 200µm Double composed double ...

Les bovins en parc d’engraissement sont soumis aux mêmes pressions face aux maladies queles autres types de production bovine. Les facteurs impliqués dans le développement desmaladies sont nombreux. Le défi des producteurs et des vétérinaires est d’élaborer unprogramme complet afin d’améliorer la résistance aux maladie. Nous aborderons les principauxproblèmes de santé dans l...

A study was conducted to determine the effect of different parasite control programs on weight gain and other measurements for stocker beef calves during the grazing season and subsequent feedlot phase of production. One hundred eighty recently weaned beef steers were purchased from a Mississippi sale barn and were allocated by restricted randomization on pretreatment weight to three treatments...

Over 3 yr, 250 calves (236 kg initial BW; 133 steers and 117 heifers) were used to compare a low-input pasture backgrounding system (PAST) to a highinput drylot system (DLOT) to evaluate performance and profit during the backgrounding (BACKGRD; weaning to 42 to 45 d) and finishing (FINISH; end BACKGRD to slaughter) phases. Calves were randomly assigned to PAST or DLOT treatments during BACKGRD....

Annexins A1 and A2 are proteins known to function in the stress response, dampening inflammatory responses and mediating fibrinolysis. We found, in healthy cattle recently arrived to a feedlot, that lower levels of these proteins correlated with later development of pneumonia. Here we determine the localization of annexin A1 and A2 proteins in the respiratory tract and in leukocytes, in healthy...

Steers (n = 335) of known genetic backgrounds from four fundamentally different growth types were subjected to two production systems to study the main effects and possible interactive effects on carcass composition. Growth types were animals with genetic potential for large mature weight (LL), intermediate mature weight-late maturing (IL), intermediate mature weight-early maturing (IE), and sm...

Weed seeds may maintain their viability when passing through the digestive tract of cattle and can be therefore dispersed by animal movement or the application of manure. Whether different cattle types of the same species can cause differential weed seed fate is largely unknown to us particularly under non-grazed systems similar to Holstein-Friesian dairy farming. We investigated the effect on ...

Spring-born purebred Brahman bull calves (n = 467) with known pedigrees, sired by 68 bulls in 17 private herds in Louisiana, were purchased at weaning from 1996 through 2000 to study variation in growth, carcass, and tenderness traits. After purchase, calves were processed for stocker grazing on ryegrass, fed in a south Texas feedlot, and processed in a commercial facility. Carcass data were re...