Relationships between lamb vigour and maternal behaviour on sucking success at parturition

1990 ◽  
Vol 1990 ◽  
pp. 36-36
Author(s):  
C.E. O'Connor ◽  
A.B. Lawrence
Keyword(s):  
Perinatal Mortality ◽  
Analysis Of Variance ◽  
Maternal Behaviour ◽  
Relative Importance ◽  
General Activity ◽  
Focal Animal ◽  
Welfare Issue ◽  
Lamb Survival ◽  
Grooming Behaviour

High perinatal mortality in sheep flocks worldwide remains a major economic and welfare issue. Maternal behaviour and lamb vigour are both considered major variables affecting lamb survival, but there is little data to describe their relative importance. The aim of this study was to investigate the relationships between lamb vigour and maternal behaviour at parturition. With the increase in hill ewes being crossed to longwool breeds there is an interest in the relative survivability of these lambs. This study compared the behaviour of Mule [Bluefaced Leicester x Blackface] lambs with purebred Scottish Blackface lambs.Data on 32 third parity single and twin-bearing Blackface ewes lambing indoors were collected by focal animal observations on the ewe's grooming behaviour. These observations included details of the time spent grooming specific areas of the lamb's body and also general activity and udder-seeking behaviour of the lambs. Observations lasted 10 minutes and were made at parturition and then at 30 and 90 minute intervals. The data was transformed by arcsin. for proportions, or log, for frequencies, and analysed by Analysis of Variance,

Relationship between lamb vigour and ewe behaviour at parturition

1992 ◽  
Vol 54 (3) ◽  
pp. 361-366 ◽  
Author(s):  
C. E. O'Connor ◽  
A. B. Lawrence
Keyword(s):  
Practical Importance ◽  
Maternal Behaviour ◽  
Limiting Factor ◽  
Relative Importance ◽  
General Activity ◽  
Lamb Survival ◽  
Few Data ◽  
The Relationship ◽  
Grooming Behaviour

AbstractMaternal behaviour and lamb vigour are both considered major variables affecting lamb survival, but there are few data to describe their relative importance. To investigate the relationship between lamb vigour and maternal behaviour this study compared the behaviour of pure Scottish Blackface lambs with Mule (Bluefaced Leicester ♀. × Scottish Blackface ♂) lambs, all born indoors. Anecdotal accounts suggested a significant reduction in lamb vigour in Mule lambs, a matter also of significant practical importance given the current incease in Mule numbers. Observations on the grooming behaviour of 32 single or twin-bearing ewes, and on the general activity and udder-seeking behaviour of their lambs were made at parturition. In this study, neither ewe grooming behaviour nor general lamb activity were directly related to lamb sucking success. It was shown that, although Mule lambs had high birth weights and stood as quickly as Blackface lambs, they showed significantly fewer sucking attempts (P < 0·01) and took longer to suck successfully (28 min for Blackface v. 55 min for Mules). The inability of Mule lambs to suck successfully was due to their failure to show proper udder-directed behaviour. These results indicate the importance of considering the behaviour of both ewes and lambs as it would seem that it is not ‘poor’ maternal behaviour but inappropriate lamb behaviour that is a limiting factor in lamb survival in the Mule breed.

scholarly journals Evaluation of the behavior of dairy calves bred in tropical climate

2021 ◽  
Vol 10 (3) ◽  
pp. e26310312965
Author(s):  
Dariane Fontes da Silva ◽  
Alberto Jefferson da Silva Macêdo ◽  
Amanda Silva de Lima ◽  
Anderson Antônio Ferreira da Silva ◽  
Maycon Souto Gomes ◽  
...  
Keyword(s):  
Analysis Of Variance ◽  
Breeding System ◽  
Sampling Method ◽  
Leisure Activity ◽  
Tropical Climate ◽  
Standing Position ◽  
Dairy Calves ◽  
The Sun ◽  
Focal Animal ◽  
Behavioral States

The purpose of this study was to evaluate the behavior of dairy calves bred in tropical climate. Six calves of the Girolando breed at 3 months old in average were used. For the elaboration of the ethogram, the focal animal sampling method was used for five days. The Analysis of Variance was run and treatment means were compared by Tukey’s test at 5% probability. Findings show that calves spent more time in the concentrate intake and foraging, the rumination occurred more frequently during the night, and no significant differences were found between the water intake and the leisure activity. The thermoregulation behavior regarding the shadow demand did not differ statistically when compared to the sun rays demand. However, animals remained in the standing position for longer in the afternoon, and spent more time walking in the morning. Statistical differences were found between the playing interaction 1 and the playing interaction 2, and there were no statistical differences between the stereotypy and vocalization. Therefore, the behavioral states were found to be indicators of the good welfare degree for calves kept in a tropical breeding system.

Early Post-Partum Contact and Later Attitudes

1980 ◽  
Vol 3 (3) ◽  
pp. 273-286 ◽  
Author(s):  
Peter de Chateau
Keyword(s):  
Post Partum ◽  
Postnatal Period ◽  
Child Rearing ◽  
Control Group ◽  
Maternal Behaviour ◽  
Relative Importance ◽  
Long Term Effects ◽  
Infant Behaviour

In a randomized, prospective study the long-term effects of early post-partum skin-toskin and suckling contact was studied. In follow-up studies 36 hours, 3 and 12 months after delivery maternal behaviour, infant behaviour, the duration of breast feeding and certain attitudes towards child rearing procedures were shown to develop differently in a group of mothers and infants with early post-natal contacts as compared to a control group. Three years after delivery parents with early contact appreciated their children's language development to be faster; the number of siblings born in these families was greater than in controls. In the discussion, the relative importance of the immediate postnatal period is emphasized, a more family oriented development seems to occur in the presence of early post-delivery interaction.

Maternal behaviour in Border Leicester, Glen Vale (Border Leicester derived) and Merino sheep

1990 ◽  
Vol 30 (1) ◽  
pp. 27 ◽  
Author(s):  
G Alexander ◽  
D Stevens ◽  
LR Bradley ◽  
SA Barwick
Keyword(s):  
Maternal Care ◽  
Maternal Behaviour ◽  
Selection Program ◽  
Merino Sheep ◽  
Lamb Survival

Ewe and lamb behaviour in traditional Border Leicesters, Glen Vale Border Leicesters of the NSW Agriculture and Fisheries, Glen Vale x Border Leicester crosses and medium-fine-wool Merinos, all running in paddocks of 3-4.5 ha, were compared in spring 1983 at Glen Innes, N.S.W. Twenty-eight aspects of behaviour with a known or reputed influence on lamb survival, especially of multiples, were examined in undisturbed and contrived situations. The Glen Vales and their crosses were superior to the Border Leicesters and Merinos in behaviour and lamb survival, particularly behaviour concerned with the ability of ewes to keep their lambs together. The study indicates that contrived twin-care tests could form the basis of a selection program to improve maternal care and survival of multiples.

A note on factors affecting lamb survival in Indian sheep

1972 ◽  
Vol 14 (1) ◽  
pp. 123-125 ◽  
Author(s):  
R. C. Malik ◽  
R. M. Acharya
Keyword(s):  
Least Squares ◽  
Analysis Of Variance ◽  
Factors Affecting ◽  
Heritability Estimates ◽  
Lamb Survival ◽  
Indian Sheep

SUMMARYRecords on lamb survival were available for 757 lambs, the progeny of 33 rams. Purebred lambs were of the Nali and Lohi breeds and crossbred lambs were produced by mating Nali ewes to Nellore or Mandya rams, and Lohi ewes to Nellore rams. For the flock as a whole 93% of those born survived to 14 days of age and 86% to weaning. A least-squares analysis of variance showed that among the factors investigated only lamb's weight at birth significantly affected survival to 14 days of age, and lamb's weight at birth, ewe's weight at lambing and the year of birth had significant effects on lamb survival from 15 days to weaning. Heritability estimates for lamb survival were based on half sib correlations. For the period from birth to 14 days of age the estimates were 0·08 for pure Nali lambs and 0·03 for the whole flock, and for the period from 15 days to weaning the estimates were 0·10 and 0·26 for the two groups respectively.

scholarly journals The identification and perceived importance of dimensions of managerial success for different levels of management

1995 ◽  
Vol 21 (2) ◽  
Author(s):  
M. P. Loubser ◽  
L. C. De Jager
Keyword(s):  
Factor Analysis ◽  
Analysis Of Variance ◽  
Principal Components ◽  
Relative Importance ◽  
Factor Scores ◽  
Varimax Rotation ◽  
Managerial Success ◽  
Perceived Importance ◽  
Different Levels ◽  
Multiple Analysis

Dimensions or factors related to managerial success were identified from the literature and a list of 78 generic dimensions compiled. These dimensions were rated in terms of their relative importance for every level of management by 241 managers on junior, middle and senior levels. A principal components factor analysis with varimax rotation was performed on the data and nine factors or clusters of dimensions were extracted. The resulting factor scores were then subjected to a multiple analysis of variance. Results indicate that the importance of these factors differ significantly across the three levels of management. The implications of the findings are discussed in both theoretical and practical terms. Opsomming Dimensies of faktore wat met bestuursukses verband hou is uit die literatuur gei'dentifiseer en 'n lys van 78 generiese dimensies is saamgestel. Hierdie dimensies se relatiewe belangrikheid vir eike bestuursvlak is deur 241 bestuurders op junior, middel en senior vlak beoordeel. 'n Hoofkomponent faktorontleding met varimax rotasie is op die data uitgevoer en nege faktore of groepe dimensies is onttrek. Die resulterende faktortellings is daarna aan 'n meervoudige analise van variansie onderwerp. Resultate dui daarop dat die belangrikheid van hierdie faktore beduidend verskil oor die verskillende bestuursvlakke. Die implikasies van die bevindinge word in beide teoretiese en praktiese terme bespreek.

scholarly journals Behaviour of twin- and triplet-born lambs and their dam 3 to 18 hours after birth is not a useful predictor of lamb survival to weaning

2020 ◽  
Vol 33 (11) ◽  
pp. 1848-1857
Author(s):  
G. V. Gronqvist ◽  
R. E. Hickson ◽  
P. R. Kenyon ◽  
S. T. Morris ◽  
K. J. Stafford ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Contact Zone ◽  
Recognition Test ◽  
Maternal Behaviour ◽  
Lamb Survival ◽  
Behaviour Score ◽  
Walking Time

Objective: An experiment was designed to determine if behaviour traits expressed by twinand triplet-bearing lambs and their dams at 3 to 18 hours of age (after the immediate ewelamb bonding had occurred) were associated with lamb survival to weaning.Methods: The behaviour of twin and triplet lambs and their dams was assessed in the paddock at 3 to 18 hours after birth. Observations were made of the number of high- and low-pitched bleats, time to stand, make contact with dam, suck from dam and follow dam were recorded for each lamb. The maternal behaviour score of each dam was assessed. A random sub-sample of lambs were assessed during a maternal-recognition test at 12 or 24 hours of age. Traits included time spent standing, sitting, walking, time taken to reach the ewes and time spent with the ewes as well as the number of high- and low-pitched bleats emitted by the lamb.Results: In the paddock, for each additional second required for twin-born lambs to follow their dam, lambs were 1.004 (95% confidence interval [CI] 1.000 to 1.008) times more likely to survive to weaning (p<0.05). The opposite relationship, however, was seen in triplet lambs. For each additional second required for triplet-born lambs to follow their dam, lambs were 0.996 (95% CI 0.993 to 0.999) times as likely to survive to weaning (p<0.05). During the maternal recognition test, twin-born lambs were 0.989 (95% CI 0.979 to 1.000) times as likely to survive to weaning for every additional second they took to reach the contact zone (p<0.05). Similarly, triplet-born lambs were 0.994 (95% CI 0.989 to 0.999) as likely to survive for every additional second they took to reach their dam (p<0.05).Conclusion: All ewe behaviours and the majority of lamb paddock and test behaviours were not associated with the survival of twin- or triplet-born lambs and, therefore, are of little use as indicators of lamb survival to weaning.

Extent and pattern of genetic diversity in linseed(Linum usitatissimum L) under irrigated ecology

2018 ◽  
Vol 5 (01) ◽  
Author(s):  
M. P. CHAUHAN ◽  
H. K. SINGH ◽  
JAY KUMAR YADAV ◽  
M K. MAURYA
Keyword(s):  
Genetic Diversity ◽  
Cluster Analysis ◽  
Multivariate Analysis ◽  
Analysis Of Variance ◽  
Linum Usitatissimum ◽  
Morphological Traits ◽  
Field Data ◽  
Relative Importance ◽  
Linum Usitatissimum L ◽  
Phenotypic Divergence

Sixty six genotypes of linseed were analysed for the morphological traits to investigate the genetic diversity between and within the genotypes. The field data was initially subjected to analysis of variance. There were highly significant differences among the genotypes for all the traits indicating the presence of variability among the genotypes and the possibility to undertake cluster analysis. The phenotypic divergence and relative importance were estimated by multivariate analysis. The cluster analysis classified linseed genotypes in to nine major groups. The maximum intercluster diversity was observed between cluster VIII and V. Based on mean performance of the genotypes and intercluster distance the crosses between ICAR Sel-1 and L-9, NDC 2005-34, H660, LCK 87042, NDL2005-22, GS335 is recommended to get use full transgressive sergeants in linseed.

The Importance of Spatial Visualization and Cognitive Development for Geometry Learning in Preservice Elementary Teachers

1982 ◽  
Vol 13 (5) ◽  
pp. 332-340 ◽  
Author(s):  
Michael T. Battista ◽  
Grayson H. Wheatley ◽  
Gary Talsma
Keyword(s):  
Cognitive Development ◽  
Elementary Teachers ◽  
Spatial Ability ◽  
Analysis Of Variance ◽  
Spatial Visualization ◽  
Preservice Elementary Teachers ◽  
Relative Importance ◽  
Main Effect ◽  
Geometry Learning ◽  
Visualization Ability

The relative importance of spatial visualization ability and cognitive development for achievement in a geometry course for preservice elementary teachers was investigated. Both factors correlated significantly with achievement, but in an analysis of variance, only the main effect due to cognitive development was significant. There was no interaction between the factors. The effect of the semester-long geometry course on students' spatial ability was also investigated. It was found that the students' spatial visualization ability was significantly greater at the end of the geometry course than at the beginning.

The effects of selection for lean tissue content on maternal and neonatal lamb behaviours in Scottish Blackface sheep

2001 ◽  
Vol 72 (3) ◽  
pp. 555-571 ◽  
Author(s):  
C. M. Dwyer ◽  
A. B. Lawrence ◽  
S. C. Bishop
Keyword(s):  
Genetic Selection ◽  
Maternal Behaviour ◽  
Selection Line ◽  
Median Latency ◽  
Lean Tissue ◽  
Lean Growth ◽  
Tissue Content ◽  
Selection For ◽  
Lamb Survival

AbstractBritish hill sheep are required to give birth to and rear their lambs under harsh extensive conditions. The aim of this study was to investigate whether genetic selection for increased (LEAN) or decreased (FAT) carcass lean content in the Scottish Blackface breed over 7 years had affected the ability of ewes to rear lambs by altering the expression of maternal and neonatal lamb behaviours. The behaviour of 61 ewes (32 LEAN and 29 FAT) and their 119 lambs were recorded at parturition and over the first 8 weeks of life. Overall there were very few effects of selection on the behaviour of the ewes. LEAN ewes were significantly faster than FAT ewes to start grooming their lambs after birth and FAT ewes tended to withdraw more frequently from their lambs than LEAN ewes. There was, however, a highly significant effect of selection line on lamb behaviour. LEAN lambs were significantly quicker than FAT lambs to perform all righting movements (median latency to stand (mins): LEAN = 11·7, FAT = 23·4, P < 0·01), were more likely both to suck (percentage that sucked: LEAN = 81·0%, FAT = 57·1%, P < 0·05), and to play within the first 2 h of birth. The higher rate of sucking in LEAN lambs persisted over the first 3 days after birth (percent observations where lambs were sucking: LEAN = 7·8 (s.e. 0·8), FAT = 5·1 (s.e. 0·6), P < 0·05), when LEAN lambs were also significantly closer to their mothers than FAT lambs. Thereafter, there were no significant effects of ewe or lamb line on behaviours recorded up to 8 weeks after birth. Overall lamb mortality to 8 weeks was 19·3% and was not significantly affected by lamb line. However, lambs that were slow to perform early behaviours had a reduced survival to 8 weeks of age. These data suggest that, although ewe maternal behaviour has not been significantly affected by selection for lean growth, the activity of the neonatal lamb has been affected. Lamb activity was related to lamb survival, even in our indoor lambing conditions. It is likely that the speed with which newborn lambs stand and suck will be even more important for survival under extensive conditions.

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