Temperament and bruising of Bos indicus cross cattle

Fordyce, Geoffry; Goddard, M. E.; Tyler, R; Williams, G L; Toleman, Mark

doi:10.1071/ea9850283

Cited by 86 publications

(66 citation statements)

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“…In a number of studies, temperament, measured in a variety of ways, has been found to be correlated with improved production (Fordyce et al 1985(Fordyce et al , 1988aVoisinet et al 1997a;Fell et al 1999) and our results agree with those findings. Flight speed was negatively correlated with ADG, iFCE, body condition and dressing percentage, and flight speed, as measured on day 0 (as well as on other days during the trial), was a reliable predictor of the performance of the animals.…”

Section: Discussionsupporting

confidence: 83%

“…Thus, temperament is a significant factor in cattle production. There is evidence that temperament influences ease of handling (Fordyce et al 1988a;Matthews et al 1997), liveweight gains in feedlots (Voisinet et al 1997a;Fell et al 1999) and at pasture (Fordyce et al 1985(Fordyce et al , 1988a, carcass damage (Fordyce et al 1988b) and aspects of beef quality (Fordyce et al 1988b;Voisinet et al 1997b).…”

Section: Introductionmentioning

confidence: 99%

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Productivity, carcass and meat quality of lot-fed Bos indicus cross steers grouped according to temperament

Petherick¹,

Holroyd²,

Doogan³

et al. 2002

Aust. J. Exp. Agric.

148

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Abstract. One hundred and twenty Bos indicus cross steers were allocated to 3 treatments (good, mixed and poor) on the basis of flight speed, as a measure of cattle temperament. The cattle were lot-fed for 100 days and data collected at intervals on their temperament (flight speeds) and productivity (liveweight changes, body condition, pen feed intakes) during this time. After slaughter, data were collected on carcass traits and meat quality. Eating-quality attributes were measured in meat samples from 22 carcasses from each treatment.Flight speeds were highly correlated across animals and within treatments, showed little change in variability over time and were highly repeatable. Flight speed indicated a slight deterioration in temperament with time in the feedlot until day 70, suggesting an increasing fearfulness in the steers. Differences in flight speeds between treatments were maintained throughout the feedlotting period; poor-temperament animals retained poor temperaments and good retained good.Flight speed was correlated with measures of production, and flight speed measured at feedlot induction was a predictor of performance. Correlations and treatment effects showed that cattle with poor temperaments had poorer average daily gains, feed conversion efficiencies, body conditions and dressing percentages compared with those with good temperaments. Reduced performance in the poor-temperament animals may have resulted from their fearfulness and state of high arousal.Treatment (temperament grouping) did not influence carcass traits, but there was evidence of lower initial pH levels and indicators of 'heat-shortening' in the meat of steers with poor temperament compared with those with good temperament. These findings suggest that the poor temperament steers were more susceptible to pre-slaughter stressors than the good temperament animals. However, the meat quality differences were not detected in eating-quality measurements.

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Section: Discussionsupporting

confidence: 83%

Section: Introductionmentioning

confidence: 99%

Productivity, carcass and meat quality of lot-fed Bos indicus cross steers grouped according to temperament

Petherick¹,

Holroyd²,

Doogan³

et al. 2002

Aust. J. Exp. Agric.

148

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show abstract

“…This finding agrees with the suggestion of Fordyce et al (1985), that differences between individual animals in susceptibility to bruising and in temperament might be more important than the variability between breeds. Transport Distance, time and transport conditions.…”

Section: Factors Affecting the Occurrence Of Bruisessupporting

confidence: 82%

Origin and assessment of bruises in beef cattle at slaughter

Strappini

Metz

Gallo

et al. 2009

Animal

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Studies of bruises, as detected on carcasses at the slaughterhouse, may provide useful information about the traumatic situations the animals endure during the pre-slaughter period. In this paper, we review scientific data on the prevalence, risk factors and estimation of the age of bruises in beef cattle. Risk factors such as animal characteristics, transport conditions, stocking density, livestock auction and handling of the animals are discussed. Investigation of the age of bruises could provide information on when in the meat chain bruises occur and, could help to pinpoint where preventive measures should be taken, from the stage of collecting the animals on the farm until slaughter. We review the methods available to assess the age of the bruises; data on human forensic research are also included. The feasibility to identify traumatic episodes during the pre-slaughter period, in order to improve animal welfare is discussed.

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“…According to Fordyce et al (1985), cattle accustomed to human contact have a calmer temperament compared with non-acclimated ones. The fact that the response to stress in steers fed the AK diet can be explained by several mechanisms further confirms that determination of pre-slaughter stress and its causes is a conundrum.…”

Section: Discussionmentioning

confidence: 99%

Stress reactivity and its relationship to beef quality in Nguni steers supplemented with Acacia karroo leaves

Mapiye

Chimonyo

Marufu

et al. 2011

Animal

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The objective of this study was to determine the levels of catecholamines and their relationship to beef quality in Nguni steers fed on Acacia karroo leaves. A total of 30 19-month-old steers were randomly assigned to A. karroo leaves (AK), sunflower cake (SF) and the control with no supplement (CN) diets. The AK and SF diets provided the steers with an additional 150 g of protein per day for 60 days. Catecholamine levels were determined from urine samples collected from each steer before and after slaughter. The Musculus longissimus thoracis et lumborum was sampled for selected meat quality measurements. Nguni steers on the CN diet had higher ( P , 0.05) concentrations of post-mortem urinary norepinephrine and dopamine compared with those that received the AK and SF diets. Norepinephrine was negatively linearly related ( P , 0.05) to the Warner-Bratzler shear force value of meat aged for 21 days and cooking loss of meat aged for 2 days (CL2) in steers that were given the SF diet. Meat pH and drip loss values were inversely related ( P , 0.05) to epinephrine concentration in steers that received the AK diet. Dopamine concentration was negatively linearly related ( P , 0.05) to water holding capacity and CL2 for steers on the CN diet. For steers on the CN diet, lightness ( L*) values increased ( P , 0.05) with increase in dopamine concentration. It was concluded that stress responsiveness and its relationship to certain beef quality attributes could be positively manipulated by supplementation with A. karroo leaves.

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Temperament and bruising of Bos indicus cross cattle

Cited by 86 publications

References 0 publications

Productivity, carcass and meat quality of lot-fed Bos indicus cross steers grouped according to temperament

Productivity, carcass and meat quality of lot-fed Bos indicus cross steers grouped according to temperament

Origin and assessment of bruises in beef cattle at slaughter

Stress reactivity and its relationship to beef quality in Nguni steers supplemented with Acacia karroo leaves

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