The use of biochemical parameters in controlling nutritional state in pregnant ewes, and the effect of undernourishment during pregnancy on lamb birth-weight

Russel, A. J. F.; Doney, J. M.; Reid, Richard

doi:10.1017/s0021859600012843

Cited by 96 publications

(52 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar effects were also found for the weight of kids at birth and at 2 weeks of age. In this respect, our results are congruent with those of other studies in sheep (Russel et al, 1967 andRobinson and Aitken, 1985;Dwyer et al, 2003) and goats (Schdeva et al, 1973;Sahlu et al, 1992 and1995) with similar schemes of food restriction. Therefore, it follows that the level of undernutrition applied in the present study impaired more specifically the ability of the doe to develop nonolfactory recognition of her young, while having little influence on other aspects of maternal behaviour.…”

Section: Discussionsupporting

confidence: 93%

Differential effects of undernutrition during pregnancy on the behaviour of does and their kids at parturition and on the establishment of mutual recognition

Terrazas

Robledo

Serafín

et al. 2009

Animal

View full text Add to dashboard Cite

We investigated whether undernutrition during the second half of pregnancy impaired the behaviour of does and their kids at parturition and early mutual recognition. Twenty-two control and 22 underfed mixed-breed, multiparous dairy goats were used, together with their respective kids (control,n= 31: nine singles, 16 twins and six triplets; underfed,n= 32: 11 singles, 18 twins and three triplets). Undernutrition involved limiting protein and energy intake at 70% of the nutritional requirements for maintenance and foetal growth from day 70 of pregnancy until birth. The behaviour of mothers and their two first-born kids was observed for 90 min from the birth of each kid. Maternal olfactory recognition of the kid was assessed at 4 hpost partumby testing selective nursing behaviour. Non-olfactory recognition was assessed at 8 h in a two-choice test excluding olfactory cues. In kids, preference for the mother was assessed in a two-choice test at either 12 or 24 hpost partum. Bodyweight of does and kids were lower in the underfed group up to 2 weekspost partum. At parturition, licking, maternal bleating frequency and latency to nursing did not differ between nutritional groups. Control kids were faster than underfed kids to stand, search for and reach the udder, but underfed kids bleated more and tended to spend more time at the udder. Both control and underfed does accepted their own kid and rejected the alien in the selectivity test at 4 h. In contrast, at 8 hpost partum, only control goats showed a significant preference for their own kid in the non-olfactory recognition test. Both control and underfed kids showed a preference for their own mother at 12 and 24 h and undernutrition during pregnancy had little influence on the performance of kids. However, 12 h-old underfed kids tended to be less active than control kids and visited their own mothers less than control kids. There were no significant correlations between the behaviour of the mother or of the kid at parturition and their performance in the discrimination tests. Overall, undernutrition in the second half of pregnancy appears to be more detrimental for the behaviour of the mother than for the kid. Furthermore, it has more impact on the establishment of maternal non-olfactory recognition than on maternal care at parturition or the establishment of maternal selectivity.

show abstract

Section: Discussionsupporting

confidence: 93%

Differential effects of undernutrition during pregnancy on the behaviour of does and their kids at parturition and on the establishment of mutual recognition

Terrazas

Robledo

Serafín

et al. 2009

Animal

View full text Add to dashboard Cite

show abstract

“…Twenty 5-year-old Scottish Black Face ewes (35-58 kg) from a single flock, with known mating dates were used. The housing, husbandry and maintenance procedures were as before (Russell, Doney & Reid, 1967;. Ewe weight gains during pregnancy, and lamb birth weights and growth rates to weaning were comparable to those reported by .…”

Section: Methodssupporting

confidence: 61%

Daily changes in foetal urine and relationships with amniotic and allantoic fluid and maternal plasma during the last two months of pregnancy in conscious, unstressed ewes with chronically implanted catheters

Mellor¹,

Slater²

1972

The Journal of Physiology

View full text Add to dashboard Cite

SUMMARY1. The fluid sacs and bladders of ten foetuses and the allantoic sacs of five foetuses were catheterized between 79 and 96 days gestational age and daily samples were withdrawn until lambs were born naturally at 147 days. Maternal jugular plasma obtained daily allowed the nutritional status of each ewe to be regulated and monitored. All lambs were observed for 7 weeks, and at post-mortem no abnormalities were seen in those operated upon in utero. 6. Changes in urine composition suggested large daily variations in the secretion of foetal antidiuretic hormone and also a rapid increase in its secretion during the last 7 days, and particularly the last 2-4 days before birth. 9. Further evidence has been presented supporting the hypothesis that maternal induced foetal hypoglycaemia effects a relative increase in the secretion of foetal corticosteroids having an action on the chorioallantois. Also, high concentrations of maternal plasma corticosteroids may decrease the permeability of the placenta to glucose.

show abstract

“…Consequently it is high when energy expenditure exceeds energy intake, for example, in fasted and in pregnant, undernourished sheep (Annison, 1960;Reid and Hinks, 1962;Russel, Doney and Reid, 1967), and in lambs and adult sheep exposed to low temperatures (Alexander, 1962;Bost and Dorleac, 1965;Slee and Halliday, 1968). The concentration is also increased by certain experimental procedures, such as injection and bloodsampling, but these effects are small (Slee and Halliday, 1968).…”

Section: Discussionmentioning

confidence: 99%

Cold exposure of Southdown and Welsh Mountain sheep. 4. Changes in concentrations of free fatty acids, glucose, acetone, protein-bound iodine, protein and antibody in the blood

Halliday¹,

Ar²,

Slee³

et al. 1969

Anim. Sci.

Self Cite

View full text Add to dashboard Cite

Twenty-four Southdown and 24Welsh Mountain year-old female sheep, half on high-plane and half on low-plane nutrition, were shorn and given two acute cold exposures in climate chambers. For 2 weeks before and 2 weeks between exposures the sheep were kept in a subcritical (4-8°C) or a thermoneutral (+30°C) environment. Before the temperature treatment each sheep received an injection of Brucella abortus vaccine. Blood samples were taken during exposure to + 8°C and + 30°C and during the acute cold exposures for estimation of free fatty acid (FFA), protein-bound iodine (PBI), glucose, acetone, serum protein and antibody levels. FFA and glucose levels alone were measured in 32 similarly treated Scottish Blackface sheep. 1. Low plane sheep had higher PBI levels at all temperatures, and higher glucose levels during acute cold exposure than high plane sheep. Otherwise most major effects were attributable to ambient temperature. 2. At +8°C the PBI, FFA, glucose, serum protein and acetone levels were higher than at + 30°C. 3. Blackface sheep had lower FFA and glucose levels than Southdown and Welsh sheep at both temperatures. 4. During acute cold exposure, PBI, acetone and FFA levels increased further. PBI levels were highest in sheep previously at + 30 c C, and acetone highest in sheep previously at + 8°C. Very high FFA levels were recorded, especially in sheep not previously coldacclimatized. 5. Glucose levels increased initially, but fell towards the end of acute exposure, suggesting that relatively less carbohydrate and more fat was utilized for energy metabolism during this period. t Present address: Moredun Research Institute, Edinburgh 9. 479 ANIM. PROD.-VOL. 11, PT. 4 4 8 0 HALLIDAY, SYKES, SLEE, FIELD AND RUSSEL6. Serum protein levels fell during acute exposure, possibly because protein catabolism increased. The proportions of albumin and y-globulin increased and decreased respectively. 7. No effects of temperature on antibody levels were detected.

show abstract

The use of biochemical parameters in controlling nutritional state in pregnant ewes, and the effect of undernourishment during pregnancy on lamb birth-weight

Cited by 96 publications

References 19 publications

Differential effects of undernutrition during pregnancy on the behaviour of does and their kids at parturition and on the establishment of mutual recognition

Differential effects of undernutrition during pregnancy on the behaviour of does and their kids at parturition and on the establishment of mutual recognition

Daily changes in foetal urine and relationships with amniotic and allantoic fluid and maternal plasma during the last two months of pregnancy in conscious, unstressed ewes with chronically implanted catheters

Cold exposure of Southdown and Welsh Mountain sheep. 4. Changes in concentrations of free fatty acids, glucose, acetone, protein-bound iodine, protein and antibody in the blood

Contact Info

Product

Resources

About