Effects of dietary selenium supply and timing of nutrient restriction during gestation on maternal growth and body composition of pregnant adolescent ewes1

Carlson, Donald E.; Reed, J. J.; Borowicz, P. P.; Taylor, J. B.; Reynolds, Lawrence P.; Neville, Tammi L; Redmer, Dale A.; Vonnahme, K. A.; Caton, J. S.

doi:10.2527/jas.2007-0837

Cited by 29 publications

(45 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…An increase in BW and BCS was observed when cows were realimented. Dietary restriction or realimentation did not influence jejunal oxygen consumption, which is in agreement with data from Carlson et al (2009) …”

Section: Discussionsupporting

confidence: 82%

“…Previous research using pregnant sheep as a model (Scheaffer et al, 2003 and have demonstrated that changes in the GIT of the dam occur with the advance of pregnancy, which can also be influenced by changes in nutrient intake (Carlson et al, 2009). The current study shows the alterations in maternal hepatic O 2 consumption and jejunal mass and O 2 consumption over different stages of gestation in the cow.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Nutrient restriction and realimentation in beef cows during early and mid-gestation and maternal and fetal hepatic and small intestinal in vitro oxygen consumption

Prezotto

Camacho

Lemley

et al. 2016

Animal

View full text Add to dashboard Cite

Objectives were to determine the effects of advancing gestation, maternal nutrient restriction during early and mid-gestation, and realimentation on fetal liver and jejunal mass and energy use in both dams and fetuses. On day 30 of pregnancy, multiparous, non-lactating beef cows (initial BW = 621 ± 11.3 kg and body condition score = 5.1 ± 0.1) were assigned to one of the two dietary treatments: control (CON; 100% requirements; n = 18) and restricted (R; 60% requirements; n = 28). On day 85, cows were slaughtered (CON, n = 6; R, n = 6), and remaining cows continued on control (CC; n = 12) and restricted (RR; n = 12) diets, or were realimented to the control diet (RC; n = 11). On day 140, cows were slaughtered (CC, n = 6; RR, n = 6; RC, n = 5), remaining cows continued on the control diet (CCC, n = 6; RCC, n = 5), or were realimented to the control diet (RRC, n = 6). On day 254, all remaining cows were slaughtered. Maternal liver O 2 consumption linearly increased ( P ⩽ 0.04) and jejunal weight (g/kg) linearly decreased (P = 0.04) as gestation advanced in CON groups. Fetal BW, and hepatic and small intestinal absolute mass, protein content and O 2 consumption linearly increased ( P ⩽ 0.04) as pregnancy advanced in CON groups. However, mass and O 2 consumption relative to BW linearly decreased ( P ⩽ 0.001) in the fetal liver in CON groups. When analyzing the effects of dietary treatment, at day 85, fetal jejunal O 2 consumption (mol/min per kg BW) was lower ( P = 0.02) in the R group when compared with the CON group. At day 140, maternal hepatic weight (g) was lower ( P = 0.02) in RC and RR cows when compared with CC, and fetal jejunual O 2 consumption (mmol/min per mg tissue and mmol/min per g protein) was greater ( P ⩽ 0.02) in RC when compared with RR. At day 254, maternal hepatic O 2 consumption (absolute and relative to BW) was lower ( P ⩽ 0.04) in the RCC cows when compared with RRC. Fetal hepatic weight was lower ( P = 0.05) in the CCC group when compared with RCC and RRC. The changes in response to nutrient restriction and realimentation in both the dam and fetus may indicate an adaptation to a lower amount of available nutrients by altering tissue mass and metabolism.Keywords: bovine, energy use, fetal, maternal, viscera ImplicationsPoor nutrition during pregnancy can result in long-lasting negative effects on the cow and offspring. Our data suggest that cows and fetuses have the ability to adapt to restriction and realimentation by altering mass or energy use in an attempt to increase the digestion and utilization of feed or to alter maintenance requirements to maintain fetal growth and development. Maternal realimentation and length of realimentation has the potential to change the effects observed in cows and fetuses by mid or late gestation. These effects may influence whole animal energetic efficiency and future productivity of the cow and offspring. IntroductionPregnancy results in a 20% to 50% increase in maternal metabolic rate, measured via O 2 consumption, in most mammals (Stock and Metcalfe, 199...

show abstract

Section: Discussionsupporting

confidence: 82%

Section: Discussionmentioning

confidence: 99%

Nutrient restriction and realimentation in beef cows during early and mid-gestation and maternal and fetal hepatic and small intestinal in vitro oxygen consumption

Prezotto

Camacho

Lemley

et al. 2016

Animal

View full text Add to dashboard Cite

show abstract

“…Interestingly, high Se in the maternal diet also decreased jejunal proliferation in female and male fetuses in a similar study (Carlson et al 2008). In fact, it has been demonstrated that Se is involved in the regulation of cell proliferation (Zeng 2002) and angiogenesis inhibition in mammary cancer (Jiang et al 1999).…”

Section: Cellular Proliferation In Fetal Ovariesmentioning

confidence: 74%

“…The control (ASe) and HSe pellets were formulated using similar ingredients to maintain similar concentrations of metabolizable energy (ME), crude protein, acid detergent fiber, neutral detergent fiber, Ca, and P. Selenium-enriched yeast replaced soybean meal and partially replaced ground corn relative to the control pellet. The approach by which dietary Se was supplemented to pregnant, primigravid ewes has been used previously by our laboratory (Reed et al 2007, Carlson et al 2008.…”

Section: Animals and Treatmentsmentioning

confidence: 99%

Cellular proliferation and vascularization in ovine fetal ovaries: effects of undernutrition and selenium in maternal diet

Grazul-Bilska¹,

Caton²,

Arndt³

et al. 2009

Reproduction

View full text Add to dashboard Cite

Sheep were fed a maintenance (M) diet with adequate (A) Se or high (H) Se concentration from 21 days before breeding to day 135 of pregnancy. From day 50 to day 135 of pregnancy (tissue collection day), a portion of the ewes from ASe and HSe groups were fed restricted (R; 60% of M) diet. Fetal ovarian sections were stained for: 1) the presence of proliferating cell nuclear antigen (a marker of proliferating cells) to determine the proportion of proliferating primordial follicles, or the labeling index (LI; percentage of proliferating cells) for primordial, primary, secondary and antral follicles, stromal tissues, and blood vessels; 2) factor VIII (a marker of endothelial cells) or 3) a presence of apoptotic cells/bodies. The number of proliferating primordial follicles and the LI of primordial follicles was decreased by R and/or HSe diets. The LI was similar for theca and granulosa cells, and for secondary or antral follicles, but was greater in secondary and antral than in primordial and primary follicles. R diet and/or Se affected the LI in all follicle types, in stromal tissues and blood vessels. A dense network of blood vessels was detected in the areas containing secondary to antral follicles, medulla, and hilus, but areas containing primordial follicles were poorly vascularized. The number of apoptotic cells was minimal. These results demonstrate that nutrient restriction and/or Se level in the maternal diet affected cellular proliferation in follicles, blood vessels, and stromal tissues in fetal ovaries. Thus, plane of nutrition and Se in the maternal diet may impact fetal ovarian development and function.

show abstract

“…A formação do tecido muscular é uma função de baixa prioridade na partição dos nutrientes, quando comparado a orgãos como cérebro, coração e fígado (DU et al, 2010), pois o comprometimento do crescimento dos órgãos internos é geralmente mais severo quando a restrição nutricional materna ocorre no início e meados da gestação em relação a restrição durante o final da gestação (REED et al, 2007;CARLSON et al, 2009;CATON et al, 2009). Entretanto, a restrição nutricional do segundo ao sétimo mês de gestação da vaca pode ter conseqüências irreversíveis na formação das miofibras secundárias e, conseqüentemente, no crescimento muscular pós-natal, pois o processo de hiperplasia muscular é restrito à gestação (DU et al, 2010), e, após o nascimento, o crescimento muscular ocorre por meio da hipertrofia das células musculares pré-existentes, o que é dependente das células satélites.…”

Section: Desenvolvimento Muscular E Peso Ao Nascimentounclassified

<b>Efeito da suplementação proteica no terço final da gestação de vacas Nelore associada a suplementação das crias em <i>creep-feeding</i> e o subseqüente desempenho produtivo e reprodutivo das bezerras e/ou novilhas</b>

Faleiro¹

View full text Add to dashboard Cite

Agradeço a Deus pelo discernimento e sabedoria e por poder contar com pessoas especiais, as quais contribuíram muito para a finalização desse trabalho.À minha filha Maria Ilídia, companheira no corre-corre do cotidiano e pela sua existência.Aos meus pais, pelas orações e apoio.À minha madrinha, respeito, amizade e gratidão.Ao prof. Dr°. Alexandre Vaz Pires, pela oportunidade, apoio e paciência; lhe tenho muito respeito e eternamente serei grata.À prof. Dr ₐ . Ivanete Susin, pela atenção, simpatia e respeito.Ao Delci e Filipe, os quais deram início a este trabalho.Ao pai da minha filha, José Alípio, agradeço pelo incentivo a busca do conhecimento e pelo apoio durante a parceria. The objective of this study was to evaluate the influence of dam supplementation on least trimester of gestation of Nellore cows and creep-feeding supplementation on productive and reproductive performance of heifers. For this purpose, a factorial arrangement (2X2) was used, which the factor I was dam supplementation of cows in the least trimester of gestation (n = 350) and the factor II was creep-feeding supplementation (n = 153). Cows were supplemented with 0.5 kg of soybean meal by 90 days before partum, and the female calves were supplemented in creep-feeding from 30 days after birth until weaning at 6.38 months of age. The experimental period comprised the least trimester of gestation up to 30 months of age. There was no interaction between supplementations on body weight (P = 0.66) and BCS (P = 0.58) of cows, and on body weight (P = 0.62), and ADG (P = 0.73) of heifers from 1.2 to 26.0 months. In the same way, there was no effect of dam supplementation (P = 0.98), and creep-feeding (P = 0.78) on body weight of heifers. However, dam supplementation exerted punctual influence on body weight of heifers at 24.9 months of age, when heifers that dam were supplemented were heavier (P = 0.040). The reproductive parameters such puberty rate at 12.5 (P = .31) and 24.9 (P = 0.75) months and the pregnancy rate at 18.7 (P = 0.86) and 26.0 (P = 0.36) months were not influenced by any nutritional strategies. However, there was interaction between supplementations on the pregnancy rate at 30 months of age, which heifers from cows that received supplement on least trimester of gestation and were submitted to creep-feeding showed higher pregnancy rate (92%, P = 0.019) than heifers who received only one of two types of supplementation. The association between dam supplementation and creep-feeding did not affect body weight, ADG, and puberty onset in Nellore heifers.

show abstract

Effects of dietary selenium supply and timing of nutrient restriction during gestation on maternal growth and body composition of pregnant adolescent ewes1

Cited by 29 publications

References 32 publications

Nutrient restriction and realimentation in beef cows during early and mid-gestation and maternal and fetal hepatic and small intestinal in vitro oxygen consumption

Nutrient restriction and realimentation in beef cows during early and mid-gestation and maternal and fetal hepatic and small intestinal in vitro oxygen consumption

Cellular proliferation and vascularization in ovine fetal ovaries: effects of undernutrition and selenium in maternal diet

<b>Efeito da suplementação proteica no terço final da gestação de vacas Nelore associada a suplementação das crias em <i>creep-feeding</i> e o subseqüente desempenho produtivo e reprodutivo das bezerras e/ou novilhas</b>

Contact Info

Product

Resources

About