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| 1 | Mammary gland growth and vascularity at parturition and during lactation in primiparous ewes fed differing levels of selenium and nutritional plane during gestation显示文摘Background: Objectives were to examine the effects of selenium(Se) supply and maternal nutritional plane during gestation on mammary gland growth, cellular proliferation, and vascularity at parturition and d 20 of lactation. Rambouillet primiparous ewes(n = 84) were allocated to treatments in a 2 x 3 factorial. Factors were dietary Se(adequate Se [ASe, 11.5 μg/kg BW] or high Se [HSe, 77.0 μg/kg BW]) and nutritional plane(60% [RES], 100% [CON], or 140% [EXC]). At parturition, lambs were removed and 42 ewes(7/treatment) were necropsied. Remaining ewes were fed a common diet meeting requirements for lactation and mechanically milked twice daily until necropsy on d 20. At both necropsy periods, mammary glands were dissected and tissues harvested. Samples were analyzed for RNA, DNA, and protein content, cell proliferation, and vascularity. Where interactions were present(P ≤ 0.05), least squares means from the highest-order interaction are presented. Results: Final body weight of ewes was least(P ≤ 0.002) in RES, intermediate for CON, and greatest for EXC, regardless of stage of the ewe at necropsy(parturition or d 20 of lactation). In ewes necropsied at parturition, mammary glands were heavier(P = 0.02) in EXC compared to RES, with CON intermediate. Concentration of RNA(mg/g) was decreased(P = 0.01) in EXC compared to CON at parturition. There was a tendency(P = 0.07) for a Se by nutrition interaction in percentage of cells proliferating where ASe-EXC ewes had greater(P ≤ 0.02) number of proliferating cells then all other treatments. Mammary vascular area tended(P = 0.08) to be affected by a Se by nutrition interaction where ASe-CON had less(P = 0.007) vascular area than HSe-CON ewes. In ewes necropsied at d 20 of lactation, the number of alveoli per area was decreased(P ≤ 0.05) in RES compared to CON and EXC-fed ewes. Conclusions: Results of this study indicate that proper maternal nutritional plane during gestation is important for mammary gland development, even out to d 20 of lactation. | Tammi L Neville Allison M Meyer Arshi Reyaz Pawel B Borowicz Dale A Redmer Lawrence P Reynolds Joel S Caton Kimberly A Vonnahme | 2013 | Journal of Animal Science and Biotechnology2013，4，4： | 3 |
| 2 | In vivo tracing of major rat brain pathways using manganese-enhanced magnetic resonance imaging and three-dimensional digital atlasing显示文摘 | Leergaard T B Bjaalie J O Devor A Wald L L Dale A M | 2003 | Neuroimage2003，20，： | 1 |
| 3 | Ethanolic fermentation of hydroly- sates from ammonia fiber expansion ( AFEX) treated com stover and distillers grain without detoxification and external nutrient supplementation显示文摘 | Lau M W Dale B E Balan V | 2008 | Biotechnology and bioengineering2008，99，3： | 1 |
| 4 | Cortical Surface -based analysis Ⅰ: segmentation and surface reconstruction 显示文摘 | A Dale B Fischl M Sereno | | Neuroimage0，9，： | 1 |
| 5 | Mor- phological attribute profiles for the analysis of very high resolution images 显示文摘 | DALE MURA M BENEDIKTSSON J A WASKE B | 2010 | 1EEE Transactions on Geoseienee and Remote Sensing2010，48，10： | 1 |
| 6 | Evaluation of distillers dried grains with solubles as a feed ingredient for broilers 显示文摘 | Lumpkins B S Batal A B Dale N M | 2004 | Poultry Science2004，83，11： | 1 |
| 7 | The measurement of responsibility in Children显示文摘 | Dale B Harris Kenneth E Clark Arnold M Rose Frances Valasek | 1954 | Child Development1954，25，1： | 1 |
| 8 | Enhanced conversion of plant biomass into glucose using trangenic rice producted endoglucanase for cellulosic ethanol 显示文摘 | Oraby H Venkatesh B Dale B Ahmad R Ransom C Oehmke J Sticklen M | 2007 | Transgenic Res2007，16，： | 1 |
| 9 | Progress in improving processingattributes in potato显示文摘 | Finlay M Dale B Bradshaw J E | 2003 | Trends in Plant Science2003，8，： | 1 |
| 10 | Mitochondrial aggregation patterns and activity in human oocytes and preimplantation embryos 显示文摘 | WILDING M DALE B MARINO M | 2001 | Hum Reprod2001，16，5： | 1 |
| 11 | Evaluation of distillers dried grains with solubles as a feed ingredient for broilers 显示文摘 | Lumpkins B S Batal A B Dale N M | 2004 | Pouh Sci2004，83，： | 1 |
| 12 | Effects of ammonia fiber explosion treatment on activity of endoglucanase from Acidothermus cellulolyticus in transgenic plant 显示文摘 | Teymouri F Alizadeh H Laureano-Perez L Dale B Sticklen M | 2004 | Appl Biochem Biotechnol2004，116，： | 1 |
| 13 | Three way k-fold Cross-Validation of resource selection functions显示文摘 | WIENS T S DALE B C BOYCE M S etal | 2008 | Ecological Modelling2008，212，： | 1 |
| 14 | Enhanced conversion of plant biomass into glucose using trangenic rice producted endoglucanase for cellulosic ethanol 显示文摘 | Oraby H Venkatesh B Dale B Ahmad R Ransom C Oehmke J Sticklen M | 2007 | Transgen Res2007，16，： | 1 |
| 15 | 16 S ribosomal DNA amplification for phylogenetic study显示文摘 | Willian G W Susan M B Dale A P | 1991 | J Bacteriol1991，173，2： | 1 |
| 16 | Glycoalkaloid increase in Solanum tuberosum on exposure to light显示文摘 | Dale M B F Griffiths D W Bain H | 1993 | Annual of applied biolo- gy1993，123，2： | 1 |
| 17 | Evaluation of distillers dried grains with solubles as a feed ingredient for broilers显示文摘 | LUMPKINS B S BATAL A B DALE N M | 2004 | Poultry Science2004，83，11： | 1 |
| 18 | A freeze -explosion technique for Increasing cellulose hydrolysis显示文摘 | Dale B E Moreira M J | 1982 | Biotechnol Bioeng Symp1982，，12： | 1 |
| 19 | Molecular structure of the cyanobacterial tumor-promoting microcystins显示文摘 | Sabine R B Dale F Luis M | 1994 | FEBS Letters1994，349，： | 1 |
| 20 | Comparison of steam and ammonia pretreatment for enzymatic hydrolysis of cellulose显示文摘 | Hartree M Mes Dale B E Craig W K | 1988 | Appl Microbiol Biotechnol1988，29，5： | 1 |
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