Tail docking of feedlot cattle is a management practice used in some confined, slatted-floor feedlots of the midwestern United States. Justification for tail docking in these management systems is to reduce tail injuries and their sequelae and improve performance, but limited evidence exists to support these claims. The primary objective of this study was to determine the effect of tail docking...

Calfhood diseases have a major impact on the economic viability of cattle operations. A three part review series has been developed focusing on calf health from birth to weaning. In this paper, the last of the three part series, we review disease prevention and management with particular reference to pneumonia, focusing primarily on the pre-weaned calf. Pneumonia in recently weaned suckler calv...

to evaluate the effects of wheat processing and dietary lipid sources on feedlot performance, carcass characteristics and fatty acids profile in meat of fattening calves, a number of 28 holstein male calves averaging in weight of 296±56kg were randomly allotted in four treatments (7 steers each). the study was conducted in a 2 × 2 factorial arrangement (two methods of wheat processing: steam fl...

Corn Distillers Dried Grains with Solubles (CDDGS) supplementation of Augustcalving cows or calves in a winter grazing system was evaluated. In two years, ‘Fawn’ endophyte-free tall fescue forage in six 4.04-ha pastures was stockpiled from mid-August. In mid-November, 24 pregnant, mature, August-calving Simmental x Angus cows (mean BW = 676 ± 2.6 and 669 ± 2.6 kg; mean BCS = 6.0 ± 0.05 and 6.2 ...

Postweaning, feedlot, and carcass data from crossbred calves sired by five Bos indicus breeds and one Bos taurus breed were evaluated. Data included records from F1 calves out of multiparous Hereford cows sired by Angus, Gray Brahman, Gir, Indu-Brazil, Nellore, and Red Brahman bulls. The Zebu crosses grew faster postweaning and were heavier and taller as yearlings than the Angus crosses (P < .0...

Crossbred calves (n = 572; initial BW = 186 +/- 27 kg) purchased from northern Texas, Arkansas, and southeast Oklahoma auction markets were delivered to the Willard Sparks Beef Research Center, Stillwater, OK, and used to study the effects of dietary energy and starch concentrations on performance and health of newly received feedlot calves during a 42-d receiving period. On arrival, calves wer...

This paper describes the control, epidemiological, pathological, and molecular aspects of an outbreak of meningoencephalitis in calves due to bovine herpesvirus 5 at a feedlot with 540 animals in São Paulo State, Brazil. The introduction of new animals and contact between the resident animals and the introduced ones were most likely responsible for virus transmission. Bovine herpesvirus 1 vacci...

Charolais-sired calves from three groups of beef cows, similar in growth potential and mature size but different in genetic potential for milk production (5.6, 7.7, 9.0 kg/d; low, medium, and high, respectively), were allotted to two beef production systems each year for 3 yr. At weaning, calves in an intensive (Int) system went directly into the feedlot for finishing (236 d); calves in an exte...

The objective of this work was to evaluate the effect of very early weaning of calves in cull cows on nutritional quality of meat. Two treatments were assayed: cull cows with very early, thirty days, weaned calves (CVEW) and cull cows with traditionally, seven months, weaned calves (CTW). Cows with very early weaned calves were grazed on pasture, meanwhile cows with traditional weaning were gra...

The effect of implants containing anabolic steroid (Synovex) on testis function, feedlot performance, and carcass traits was evaluated in bulls, steers, and bulls actively immunized against gonadotropin-releasing hormone (GnRH). Ninety-one Hereford or Hereford x Red Angus bull calves were randomly assigned to a 3 x 2 factorial experiment. The treatments were: 1) unimmunized control (n = 30), 2)...