Growth promoters and meat yield

Fiems, L. O.; Cottyn, B. G.; Boucque, C. V.

doi:10.1016/b978-0-444-88930-0.50009-2

Cited by 4 publications

(2 citation statements)

References 77 publications

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“…In terms of unfasted LW, the advantage from Compudose treatment was 36.3 kg. The magnitude of the response in LWG for the Compudose-treated steers was similar to that from studies using Compudose on feedlots O'Callaghan et al 1986;Fiems et al 1991) and for those obtained under European grazing conditions (O'Lamhna & Roche 1984) and in New Zealand (Fitzpatrick 1986;Bass et al 1989). Table 2 Herbage mass, sward height, botanical composition, in vitro digestibility, and ash content of herbage offered to the steers during December 1992 (first intake period) and during April 1993 (second intake period) (mean ±SE).…”

Section: Discussionsupporting

confidence: 58%

Liveweight gain, herbage intake, and ingestive behaviour in Compudose®‐treated and untreated steers at pasture

Osorio

McCutcheon

et al. 1996

New Zealand Journal of Agricultural Research

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Twenty 14-month-old Friesian steers and sixteen 14-month-old Angus cross steers were randomly assigned within "breed" to Compudose® treatment (24 mg of oestradiol-17β impregnated in a silicone rubber implant with an active life of 200 days) or left untreated. Fasted liveweight gain (LWG) of the steers was recorded as were calculated herbage intakes and grazing behaviour, measured on two occasions (days 34-50 and days 168-184 of treatment). Compudose-treated steers gained a mean of 856 g/day compared with 710 g/day by the control steers over the treatment period (20.6% increase, P < 0.001). The final fasted liveweight of treated steers was improved by 29.5 kg (7.1%) over that of the untreated steers (P < 0.001). There were no significant differences in the amount of herbage eaten or in components of grazing behaviour between the treated and untreated groups. Under pastoral conditions, as in feedlots, Compudose treatment appears to increase both LWG and the efficiency of that gain.

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Section: Discussionsupporting

confidence: 58%

Liveweight gain, herbage intake, and ingestive behaviour in Compudose®‐treated and untreated steers at pasture

Osorio

McCutcheon

et al. 1996

New Zealand Journal of Agricultural Research

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“…Les f!-agonistes des catécholamines ont montré ces dernières années leur possibilité d'accroître la synthèse protéique et de diminuer la lipogénèse et d'aboutir ainsi à des différences notables de composition corporelle des animaux à viande. La synthèse des essais réalisés chez les bovins fait ressortir une amélioration, dose-dépendante, du gain de poids et de l'efficacité alimentaire, une augmentation de à 5 points du rendement en carcasse, un accroissement de la masse musculaire (+ 9 à 17 %) et une réduction de la masse adipeuse pouvant atteindre 30 % (Geay 1990 ;Fiems et al 1991). Il existe cependant diverses molécules dont les effets sont à préciser aussi bien sur le développement des tissus que sur les caractéristiques biologiques des muscles et des viandes (cf revue de Moloney et al 1991).…”

Section: / Influence De La Nature De La Rationunclassified

Composition corporelle et caractéristiques biologiques des muscles chez les bovins en croissance et à l’engrais

1993

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Cet article présente de façon synthétique les connaissances acquises par différentes équipes de recherches sur les lois biologiques de variations de la composition corporelle des bovins et les effets des facteurs zootechniques qui permettent de la modifier (génotype, sexe, stade d’abattage, niveau d’alimentation, nature de la ration et facteurs de croissance). Les caractéristiques du tissu musculaire, déterminantes pour la qualité de la viande, et leurs variations sous l’influence des mêmes facteurs sont également développées.

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Monitoring for clenbuterol abuse in N. Ireland 1989–1994

Elliott

Shortt

Kennedy

et al. 1996

Veterinary Quarterly

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Laboratory testing in N. Ireland for the illegal growth promoting agent, clenbuterol (CBL), is centralized at the Veterinary Sciences Division, Belfast. During the past 6 years a variety of testing schemes have evolved to determine the level of abuse of this drug in the local meat industry. The types of samples from cattle tested during this period altered as pharmacokinetic data for the compound increased. Initially, fluids such as urine and bile were used, however testing switched to more appropriate tissues such as liver, eyes, and hair. The first positive samples were detected in 1990, with 43 out of 121 samples tested showing detectable residues. In the following year, this number increased to 139 out of 286 tests. Despite substantial increases in the number of samples analysed over the succeeding years, the numbers of positive results steadily declined, thus giving strong evidence that abuse was also on the decline. From the data collected over the 6-year period, it became clear that the EU National Surveillance Scheme designed to detect abuse of illegal substances was ineffective and locally designed programmes were required to effectively tackle the problem.

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Growth promoters and meat yield

Cited by 4 publications

References 77 publications

Liveweight gain, herbage intake, and ingestive behaviour in Compudose®‐treated and untreated steers at pasture

Liveweight gain, herbage intake, and ingestive behaviour in Compudose®‐treated and untreated steers at pasture

Composition corporelle et caractéristiques biologiques des muscles chez les bovins en croissance et à l’engrais

Monitoring for clenbuterol abuse in N. Ireland 1989–1994

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