The effect of maternal nutrient restriction during late gestation on muscle, bone and meat parameters in five month old lambs

Tygesen, M. P.; Harrison, Adrian P.; Therkildsen, Margrethe

doi:10.1016/j.livsci.2006.11.003

Cited by 30 publications

(21 citation statements)

References 48 publications

(56 reference statements)

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“…The current results regarding kid growth emphasised the importance of additional feeding before mating and during lactation in extensive goat farming (Martin et al 2004;Scaramuzzi et al 2006;Sultana et al 2012). It has been reported that the nutritional level in maternal feeding during pregnancy affected the number of secondary muscle fibres in striated muscle tissue in foetus which had an effect on birth weight (Dwyer et al 1994;Tygesen & Harrison 2005;Tygesen et al 2007). Also, as given in Table 6, weaning kids from treatment goats were heavier than those of control goats (p<0.05).…”

Section: Resultsmentioning

confidence: 59%

Effects of supplemental feeding on performance of Kilis goats kept on pasture condition

Gül

Keskin

Göçmez³

et al. 2016

Italian Journal of Animal Science

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In this study, the effects of supplemental feeding to extensive pasture condition on some reproductive and milk yield characteristics in Kilis goats have been investigated. For this study, 180 Kilis goats were used. These goats were assigned into two groups as control and treatment. Control goats were allowed to graze pasture, while treatment goats were additionally fed 750 g/day with concentrated feed per head plus pasture facility. At the end of the study the average fertility rate, marketable milk yield, lactation length and lactation milk yield were determined as 115.56%, 215.5 6 5.28 l, 212.5 6 1.09 days 293.7 6 5.76 l, respectively, in the control goats; 131.1%, 304.1 6 6.48 l, 256.5 6 1.79 days, 408.3 6 7.21 l, respectively, in the treatment goats. To conclude, supplementary feeding plus pasture improved reproductive and milk yield performance in Kilis goats. ARTICLE HISTORY

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Section: Resultsmentioning

confidence: 59%

Effects of supplemental feeding on performance of Kilis goats kept on pasture condition

Gül

Keskin

Göçmez³

et al. 2016

Italian Journal of Animal Science

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“…The lightest 20% of Merino weaners within a flock are~3 times more likely to die than those from the middle 20% of weaning weights, and Campbell et al (2009) reported that increasing growth rates from~10 to 20 g/day during the 5 months after weaning reduced the risk of mortality by more than 70%. If restriction of growth of sheep before weaning is severe and prolonged the growth of muscle and bone may be limited (Greenwood et al 1998(Greenwood et al , 2000Tygesen et al 2007) and ultimately mature size may or may not be reduced (Schinckel and Short 1961;Everitt 1967;Krausgrill et al 1997;Kelly et al 2006). Lamb growth to weaning is largely determined by intake of milk (Doney and Peart 1976;Snowder and Glimp 1991) and increasing the dietary energy intake of ewes during lactation increases ewe milk production and lamb growth (Langlands 1977;Jordan and Mayer 1989).…”

Section: Introductionmentioning

confidence: 99%

Improving the nutrition of Merino ewes during pregnancy and lactation increases weaning weight and survival of progeny but does not affect their mature size

et al. 2011

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Abstract. Lamb growth to weaning, and during the period immediately following weaning, influences post-weaning mortality and may affect mature size. The hypothesis tested in the experiments reported in this paper was that changes in the maternal liveweight of Merino ewes during pregnancy and lactation could predict the weight at weaning, post-weaning survival and mature size of their progeny. At two sites (Vic. and WA) in each of two years, a wide range in the liveweight profiles of ewes was generated during pregnancy and lactation by varying the amount of supplements fed and feed on offer grazed. Across the four experiments this resulted in progeny weights ranging from 13.8 to 28.3 kg just before weaning. Lamb growth was primarily related to the amount of feed on offer during lactation, but was also related to the liveweight change of the ewe during pregnancy. These relationships were consistent in both experiments at each site. Weaning weight was strongly associated with post-weaning survival at the Vic. site. Survival rates decreased significantly when weaning weights were below 20 kg. These results indicate that management of ewe and lamb nutrition to maximise growth of lambs before weaning and growing weaners at 30 g/day or more after weaning are important for optimal post-weaning survival. The findings also suggest that the mature size of offspring is unlikely to be adversely affected by pre-weaning nutrition within the range of nutritional scenarios during pregnancy and lactation that are likely to be experienced within the Australian sheep industry.

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“…This concept of “programming” represents the mechanism whereby a stimulus or an insult during a critical developmental period has permanent effects on structure, physiology, and metabolism 7. There is evidence of programming affecting structure and function of skeletal muscles postnatally 4. For example, Ozanne et al3,8 showed alterations in muscle metabolic capacities in rats undernourished during fetal development and lactation.…”

Section: Introductionmentioning

confidence: 99%

Passive stiffness of rat skeletal muscle undernourished during fetal development

Toscano

Ferraz

Castro

et al. 2010

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OBJECTIVES:The aim of the study was to investigate the effect of fetal undernutrition on the passive mechanical properties of skeletal muscle of weaned and young adult rats.INTRODUCTION:A poor nutrition supply during fetal development affects physiological functions of the fetus. From a mechanical point of view, skeletal muscle can be also characterized by its resistance to passive stretch.METHODS:Male Wistar rats were divided into two groups according to their mother's diet during pregnancy: a control group (mothers fed a 17% protein diet) and an isocaloric low‐protein group (mothers fed a 7.8% protein diet). At birth, all mothers received a standardized meal ad libitum. At the age of 25 and 90 days, the soleus muscle and extensor digitorum longus (EDL) muscles were removed in order to test the passive mechanical properties. A first mechanical test consisted of an incremental stepwise extension test using fast velocity stretching (500 mm/s) enabling us to measure, for each extension stepwise, the dynamic stress (σd) and the steady stress (σs). A second test consisted of a slow velocity stretch in order to calculate normalized stiffness and tangent modulus from the stress–strain relationship.RESULTS:The results for the mechanical properties showed an important increase in passive stiffness in both the soleus and EDL muscles in weaned rat. In contrast, no modification was observed in young adult rats.CONCLUSIONS:The increase in passive stiffness in skeletal muscle of weaned rat submitted to intrauterine undernutrition it is most likely due to changes in muscle passive stiffness.

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The effect of maternal nutrient restriction during late gestation on muscle, bone and meat parameters in five month old lambs

Cited by 30 publications

References 48 publications

Effects of supplemental feeding on performance of Kilis goats kept on pasture condition

Effects of supplemental feeding on performance of Kilis goats kept on pasture condition

Improving the nutrition of Merino ewes during pregnancy and lactation increases weaning weight and survival of progeny but does not affect their mature size

Passive stiffness of rat skeletal muscle undernourished during fetal development

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