The effects of social exchange between two groups of lactating primiparous heifers on milk production, dominance order, behavior and adrenocortical response

Hasegawa, Nobumi; Nishiwaki, Aya; Sugawara, Kazuo; Ito, Iwao

doi:10.1016/s0168-1591(96)01082-9

Cited by 151 publications

(139 citation statements)

References 40 publications

Supporting

Mentioning

112

Contrasting

Unclassified

Order By: Relevance

“…The major factors include the following: environmental (season, temperature), physiological (milk yield, age, and stage of lactation; Hasegawa et al, 1997;Bertoni et al, 2006a) and genetic (Weiss et al, 2004;Kosti et al, 2006). One of more intriguing aspects has been shown by Kosti et al (2006), who found an exaggerated ACTH release to restraint stress (30 minutes), but only a slightly higher (NS) rise of corticosterone, in a strain of rat characterised by more 'anxious-like' behaviour in comparison to a nonreactive strain.…”

Section: Cortisolmentioning

confidence: 99%

Some physiological and biochemical methods for acute and chronic stress evaluationin dairy cows

Trevisi

Bertoni

2009

Italian Journal of Animal Science

View full text Add to dashboard Cite

Stress factors are so numerous and so diverse in their strength and duration that the consequences on animal welfare can be quite varied. The first important distinction concerns the characterization of acute and chronic stress conditions. Acute stress is a short-lived negative situation that allows a quick and quite complete recovery of the physiological balance (adaptation), while chronic stress is a long lasting condition from which the subject cannot fully recover (maladaptation). In the latter case, the direct effects of the stress factors (heat, low energy, anxiety, suffering etc.), as well as the indirect ones (changes occurring at endocrinological, immune system or function level) can be responsible for pre-pathological or pathological consequences which reduce animal welfare. To evaluate the possible chronic stress conditions in single animals or on a farm (in particular a farm of dairy cows), some parameters of the direct or indirect effects can be utilised. They are physiological (mainly hormone changes: cortisol, β-endorphin), behavioural (depression), biochemical (metabolites, acute phase proteins, glycated proteins etc.), as well as performance parameters (growing rate, milk yield, fertility, etc.). Special attention has been paid to the interpretation of cortisol levels and to its changes after an ACTH challenge. Despite fervent efforts, well established and accepted indices of chronic stress (distress) are currently lacking; but without this objective evaluation, the assessment of animal welfare and, therefore, the optimization of the livestock production, could prove more difficult.

show abstract

Section: Cortisolmentioning

confidence: 99%

Some physiological and biochemical methods for acute and chronic stress evaluationin dairy cows

Trevisi

Bertoni

2009

Italian Journal of Animal Science

View full text Add to dashboard Cite

show abstract

“…Heifers that were high-ranking till that point are confronted with higher-ranking cows and must thus deal with a loss of rank. Dobson & Smith (2000) and Hasegawa et al (1997) demonstrated that the decrease if individual rank is a considerable strain. In the present study dominant heifers often and apparently causeless showed aggression against submissive heifers.…”

Section: Discussionmentioning

confidence: 99%

“…The hierarchy is stable after approximately three weeks (Brakel & Leis 1976). After integration into existing groups cows can show decreasing milk yield (Hasegawa et al 1997), shorter feeding and resting times (Hasegawa et al 1997) and increased blood cortisol, albumin and urea (Gupta et al 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Regrouping can lead to loss of rank, especially when the animal held a high rank until that time (Hasegawa et al 1997). Loss of rank is a severe strain, which can lead to decreasing milk yield (Hasegawa et al 1997) and fertility disorders (Dobson et al 2000).…”

Section: Introductionmentioning

confidence: 99%

“…Loss of rank is a severe strain, which can lead to decreasing milk yield (Hasegawa et al 1997) and fertility disorders (Dobson et al 2000). When heifers are introduced into a group of multiparous cows, a loss of rank for the heifer can be expected, because due their higher body weight cows are usually dominant over heifers (Arave et al 1977, Baehr 1983.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of rank, group size and number of group changes ante partum on the occurrence of milk ejection disorders in primiparous cows – a field study

2011

View full text Add to dashboard Cite

In the present study causes for the development of milk ejection disorders (MED) in primiparous cows of two herds were investigated. We hypothesised that MED are provoked by social problems within the herd that appear close to calving. Data were collected on 67 heifers of herd A and 60 heifers of herd B. In herd A, heifers were introduced into existing groups of cows 2-4 weeks prior to calving. They were kept in a group housing system with deep bedding. All animals were hornless. In herd B, heifers were kept separated from the cows from 2-4 weeks a.p. in a three-row cubicle barn. In contrast to herd A, all animals had horns.The animals´ reactions regarding the milking process and MED were analysed during the first four milkings p.p. We evaluated the correlation between social rank, group size and frequency of group changes in the antepartal period and the occurrence of MED.12 % of the animals in herd A and 47 % of the animals in herd B showed MED. In herd A, lowranking heifers had significantly more often MED than higher-ranking heifers. A correlation between low rank, increasing strain due to rank order fights and increasing frequency of MED can be assumed here. In herd B, a correlation between stocking rate and frequency of MED could be observed. Keywords

show abstract

Time is of the essence: an application of a relational event model for animal social networks

Patison

Quintane

Swain

et al. 2015

Behav Ecol Sociobiol

View full text Add to dashboard Cite

Understanding how animal social relationships are created, maintained and severed has ecological and evolutionary significance. Animal social relationships are inferred from observations of interactions between animals; the pattern of interaction over time indicates the existence (or absence) of a social relationship. Autonomous behavioural recording technologies are increasingly being used to collect continuous interaction data on animal associations. However, continuous data sequences are typically aggregated to represent a relationship as part of one (or several) pictures of the network of relations among animals, in a way that parallels human social networks. This transformation entails loss of information about interaction timing and sequence, which are particularly important to understand the formation of relationships or their disruption. Here, we describe a new statistical model, termed the relational event model, that enables the analysis of fine-grained animal association data as a continuous time sequence without requiring aggregation of the data. We apply the model to a unique data set of interaction between familiar and unfamiliar steers during a series of 36 experiments to investigate the process of social disruption and relationship formation. We show how the model provides key insights into animal behaviour in terms of relationship building, the integration process of unfamiliar animals and group building dynamics. The relational event model is well suited to data structures that are common to animal behavioural studies and can therefore be applied to a range of social interaction data to understand animal social dynamics.Electronic supplementary materialThe online version of this article (doi:10.1007/s00265-015-1883-3) contains supplementary material, which is available to authorized users.

show abstract

The effects of social exchange between two groups of lactating primiparous heifers on milk production, dominance order, behavior and adrenocortical response

Cited by 151 publications

References 40 publications

Some physiological and biochemical methods for acute and chronic stress evaluationin dairy cows

Some physiological and biochemical methods for acute and chronic stress evaluationin dairy cows

Effect of rank, group size and number of group changes ante partum on the occurrence of milk ejection disorders in primiparous cows – a field study

Time is of the essence: an application of a relational event model for animal social networks

Contact Info

Product

Resources

About