Effects of timing of chlortetracycline in combination with decoquinate on growth performance, health, and carcass characteristics of feeder steers

Autor:	Thomson, Daniel U., Swingle, R. Spencer, Branine, Mark, Bartle, Steven J., Yates, David A.
Jazyk:	angličtina
Rok vydání:	2014
Předmět:	Chlortetracycline business.industry Feedlot cattle Body weight Feed conversion ratio chemistry.chemical_compound Minimal effect Animal science chemistry Respiratory morbidity Medicine Dry matter Decoquinate business neoplasms medicine.drug
DOI:	10.21423/bovine-vol48no2p120-128
Popis:	Steer calves (n=1690) were used in a 220-day study to evaluate the effects of chlortetracycline (CTC) plus decoquinate (DEQ) on health and performance of feedlot cattle. Treatments were (1) control (CON); (2) CTC+decoquinate early (CTC+DEQ Early), and (3) CTC+decoquinate delayed (CTC+DEQ Delayed). Ten mg of CTC/lb (22 mg/kg) body weight (BW) was fed daily for 5 consecutive days beginning either on day 0 (Early) or day 6 (Delayed); decoquinate was fed at 22.7 mg/100 lb (45.4 kg) BW for 28 days. There were 6 pens per treatment, and 85 to 105 steers per pen. Steers in the CTC+DEQ groups had higher (P The Bovine Practitioner, Vol. 48, No. 2 (2014 Summer)
Databáze:	OpenAIRE
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