The importance of diet choice on stress-related responses by lambs

Catanese, Francisco Hernan; Obelar, Marianela; Villalba, Juan J.; Distel, Roberto Alejandro

doi:10.1016/j.applanim.2013.07.005

Cited by 37 publications

(33 citation statements)

References 60 publications

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“…Our results agree with the study by Miranda- de la Lama et al (2010a) who reported immune suppression as a consequence of the cumulative effect of factors associated with a barren environment and poor handling at the CC. Catanese et al (2013) found similar results in penned lambs subjected to a monotonous diet (without a source of fiber) compared with varied diet (with a fiber source). These authors suggest that a monotonous diet increases stress levels and hence immunosuppression.…”

Section: Physiological Variablessupporting

confidence: 88%

“…In this study, EE lambs had similar cortisol levels to controls, indicating that the hypothalamic-pituitary-adrenal axis response of both groups was similar when faced with potentially stressful stimuli in these environments (e.g., handling). However, intensive feedlots can be a source of chronic stress, mainly due to high animal density, a poor environment, minimal sensory stimulation (Wood-Gush & Vestergaard, 1989), and a monotonous diet (Catanese et al, 2013). The higher N/L ratio found in CO lambs could indicate chronic stress, but the values were not accompanied by clinical signs of disease.…”

Section: Physiological Variablesmentioning

confidence: 99%

See 1 more Smart Citation

Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators

Aguayo-Ulloa

Villarroel

Pascual-Alonso

et al. 2014

Journal of Veterinary Behavior

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Section: Physiological Variablessupporting

confidence: 88%

Section: Physiological Variablesmentioning

confidence: 99%

Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators

Aguayo-Ulloa

Villarroel

Pascual-Alonso

et al. 2014

Journal of Veterinary Behavior

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“…Moreover, other details such as dietary monotony or even nutritionally balanced diets could influence this parameter. Catanese et al (2013) observed that restricting lambs' dietary choice produced changes in blood and behavioural parameters indicative of stress in sheep.…”

Section: Discussionmentioning

confidence: 99%

Feedlot conditions and their influence on blood parameter values in Merino lambs in Extremadura, Spain over a specific time-period

Fernández

Galapero

Rey

et al. 2018

J Hellenic Vet Med Soc

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ABSTRACT. It has been suggested that the evaluation of specific blood parameters can be used as indicators of animal health and welfare. The aim of this study was to determine possible differences in these parameters at the beginning and at the end of the feedlot period and to analyse the influence of feedlot conditions on these animals. Blood parameter ranges can vary widely depending on factors such as transport, handling and feedlot. Four hundred and ten fattening lambs were studied to establish average values of different blood parameters. For data analysis, descriptive statistics and paired t-tests were used. The results of the current study indicate that mean values of Haematocrit, Cellular Haemoglobin Concentration and Cortisol levels were outside of the normal range, both at the beginning of the feedlot period and at upon leaving the feedlot. Higher mean values of MCHC, Urea, Total Proteins and Cortisol levels were observed at the end compared to the beginning of the feedlot period. On the other hand, Haematocrit, Mean Corpuscular Volume (MCV), Eosinophils and Creatine phosphokinase (CPK) were at higher mean values at the beginning of the feedlot period. Elevations in some blood parameters that are associated with acute stress states were raised in slaughter lambs during the feedlot period, transport and handling.

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“…Scott & Provenza 1998). Lambs fed a uniform diet with no opportunity for choice had slower feed intakes than did those allowed to choose between feeds that varied over time, as well as higher cortisol levels and neutrophil to lymphocyte ratios, suggesting that they might have been experiencing stress (Catanese et al 2013). Consistent with the hypothesis that cattle prefer variety, all beef heifers tested consumed more than one type of feed when they are offered a choice (Ginane et al 2002), and calves select different dietary ingredients day to day and at different times of day (Atwood et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Some like it varied: Individual differences in preference for feed variety in dairy heifers

Meagher

Weary

Keyserlingk

2017

Applied Animal Behaviour Science

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Motivation to explore is believed to be widespread among animals, but exploratory behaviour varies within populations. Offering variety in feed is one simple way of allowing intensively housed dairy cattle to express exploratory foraging behaviour. Individuals' exploration of different feed types, as with other new stimuli, likely reflects a balance between exploratory motivation and fear of novelty. We tested the degree to which Holstein heifers (n=10) preferred variety in feed vs. a constant, high quality mixed ration, by first providing varying types of forages and then varying flavours of mixed feed. We also investigated individual differences in exploratory behaviour by measuring switching between feed bins. Individual consistency in preferences was assessed between tests, and longer-term consistency was evaluated by comparing 2 these results with behaviour in novel object and novel feed tests before weaning. On average, the heifers preferred the constant, familiar feed (spending on average just 20% of their time at varied feed bins), but this preference varied among individuals (from 0 to 46% of time eating in the forage trial, and 0 to 93% in the flavour trial). Preference for varied forages correlated positively with intake of novel feed as calves (rs=0.72, n=9). Preference for varied flavours showed a negative correlation with latency to approach a novel object (rs=-0.65). It thus appears that preference for variety and exploratory foraging behaviour reflect consistent personality traits. These results suggest that offering novel feeds on a rotating schedule as a supplement to the regular diet may be an effective form of enrichment for at least some individuals within a herd.

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The importance of diet choice on stress-related responses by lambs

Cited by 37 publications

References 60 publications

Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators

Finishing feedlot lambs in enriched pens using feeder ramps and straw and its influence on behavior and physiological welfare indicators

Feedlot conditions and their influence on blood parameter values in Merino lambs in Extremadura, Spain over a specific time-period

Some like it varied: Individual differences in preference for feed variety in dairy heifers

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