David G. Armstrong

David G. Armstrong's AcademicInfluence.com Rankings

David G. Armstrong

Chemistry

#4068

World Rank

#5128

Historical Rank

Analytical Chemistry

#168

World Rank

#175

Historical Rank

chemistry Degrees

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Chemistry

David G. Armstrong's Degrees

PhD Chemistry Stanford University
Bachelors Chemistry University of California, Berkeley

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David G. Armstrong's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Enzyme method for determination of α-linked glucose polymers in biological materials (1968) (395)
Control of follicular growth: local interactions and nutritional influences. (2004) (384)
Molecular mechanisms regulating follicular recruitment and selection. (2019) (202)
Ovarian follicular dominance: the role of intraovarian growth factors and novel proteins. (1997) (195)
Effect of Dietary Energy and Protein on Bovine Follicular Dynamics and Embryo Production In Vitro: Associations with the Ovarian Insulin-Like Growth Factor System1 (2001) (181)
Environmental temperature, energy metabolism and heat regulation in sheep. I. Energy metabolism in closely clipped sheep (1959) (180)
Mechanisms regulating follicular development and selection of the dominant follicle. (2019) (179)
Immune cells and cytokine production in the bovine corpus luteum throughout the oestrous cycle and after induced luteolysis. (1999) (172)
Angiogenesis in the human corpus luteum: localization and changes in angiopoietins, tie-2, and vascular endothelial growth factor messenger ribonucleic acid. (2000) (157)
Studies on intestinal digestion in the sheep (1969) (150)
The effects of intraruminal infusions of urea, casein, glucose syrup and a mixture of casein and glucose syrup on nitrogen digestion in the rumen of cattle receiving grass-silage diets (1987) (141)
The utilization of the energy of two mixtures of steam-volatile fatty acids by fattening sheep (1958) (140)
Studies on intestinal digestion in the sheep (1969) (140)
The utilization of acetic, propionic and butyric acids by fattening sheep (1957) (139)
Interactions between nutrition and ovarian activity in cattle: physiological, cellular and molecular mechanisms. (2019) (132)
The effect in sheep of physical form on the sites of digestion of a dried lucerne diet (1972) (126)
Expression of mRNA encoding IGF-I, IGF-II and type 1 IGF receptor in bovine ovarian follicles. (2000) (121)
The heat increment of steam-volatile fatty acids in fasting sheep (1957) (120)
Insulin-like growth factor binding protein -2 and -4 messenger ribonucleic acid expression in bovine ovarian follicles: effect of gonadotropins and developmental status. (1998) (120)
The effect in sheep of physical form and stage of growth on the sites of digestion of a dried grass (1972) (111)
The effect in sheep of physical form and stage of growth on the sites of digestion of a dried grass (1972) (92)
The chemical composition and nutritive value of grass silages prepared with no additive or with the application of additives containing either Lactobacillus plantarum or formic acid (1988) (89)
Studies on intestinal digestion in the sheep (1970) (88)
The influence of inclusion of either an antibiotic or a probiotic in the diet on the development of digestive enzyme activity in the pig (1990) (88)
Environmental temperature, energy metabolism and heat regulation in sheep. II. The partition of heat losses in closely clipped sheep (1959) (86)
Post-abomasal digestion of carbohydrate in the adult ruminant (1969) (82)
Effects of IGF-I bioavailability on bovine preantral follicular development in vitro. (2007) (78)
Corpus luteum (CL) function: local control mechanisms. (2002) (75)
Ovarian aromatase activity in the domestic fowl (Gallus domesticus). (1984) (75)
The heat increments of mixtures of steam-volatile fatty acids in fasting sheep (1957) (74)
The effect of drying and ensiling grass on its digestion in sheep (1971) (73)
Activin promotes oocyte development in ovine preantral follicles in vitro (2003) (72)
Insulin-like growth factor (IGF) system in the oocyte and somatic cells of bovine preantral follicles. (2002) (72)
The establishment in one operation of a cannula into the rumen and re-entrant cannulae into the duodenum and ileum of the sheep. (1968) (69)
The effect in sheep of physical form on the sites of digestion of a dried lucerne diet (1972) (69)
The importance of the form of nitrogen on microbial protein synthesis in the rumen of cattle receiving grass silage and continuous intrarumen infusions of sucrose (1989) (67)
Expression of monocyte chemoattractant protein-1 in the bovine corpus luteum around the time of natural luteolysis. (1998) (66)
Protein Nutrition and the Utilization of Dietary Protein at Different Levels of Intake by Growing Swine (1955) (64)
Effects of heat treatments of antinutritional factors and quality of proteins in winged bean (1987) (63)
Regulation of expression of ovarian mRNA encoding steroidogenic enzymes and gonadotrophin receptors by FSH and GH in hypogonadotrophic cattle. (2002) (62)
The digestion of grass silages produced using inoculants of lactic acid bacteria (1994) (61)
Insulin action and glucose metabolism in sheep fed on dried-grass or ground, maize-based diets (1985) (61)
The effect of increased dietary intake on superovulatory response to FSH in heifers. (2002) (60)
The fate of carbohydrates in the small and large intestines of the ruminant (1979) (60)
Absorption and metabolism of glucose by the mesenteric-drained viscera of sheep fed on dried-grass or ground, maize-based diets (1985) (59)
The effect of inoculation with Lactobacillus plantarum on fermentation in laboratory silos of herbage low in water-soluble carbohydrate (1990) (58)
The effects of IGF-I on bovine follicle development and IGFBP-2 expression are dose and stage dependent. (2006) (53)
Steroidogenesis in bovine granulosa cells: the effect of short-term changes in dietary intake. (2002) (53)
Urea synthesis and degradation in sheep given pelleted-grass diets containing flaked barley (1982) (53)
Rumen fermentation studies on two contrasting diets. 1. Some characteristics of the in vivo fermentation, with special reference to the composition of the gas phase, oxidation/reduction state and volatile fatty acid proportions (1977) (52)
The effects of intraruminal infusions of sodium bicarbonate, ammonium chloride and sodium butyrate on urea metabolism in sheep (1982) (50)
Control of ovarian function; effect of local interactions and environmental influences on follicular turnover in cattle: a review (1998) (50)
The digestion of untreated and formaldehyde-treated soya-bean and rapeseed meals by cattle fed a basal silage diet (1983) (49)
Insulin-like growth factor-I binding proteins in serum from the domestic fowl. (1989) (46)
Insulin-like growth factor (IGF)-binding protein production by primary cultures of ovine granulosa and theca cells. The effects of IGF-I, gonadotropin, and follicle size. (1996) (46)
Antibiotic feed additives and livestock production (1987) (46)
The flow of amino acids into the small intestine of cattle when fed heated and unheated beans (Vicia faba) (1979) (46)
Milk production in early lactation dairy cows given grass silage ad libitum : Influence of concentrate energy source, crude protein content and level of concentrate allowance (1988) (44)
The effect of urea and urea plus sodium sulphate on microbial protein production in the rumens of sheep given diets high in alkali-treated barley straw (1982) (43)
Insulin-like growth factor-I (IGF-I) production by bovine granulosa cells in vitro and peripheral IGF-I measurement in cattle serum: an evaluation of IGF-binding protein extraction protocols. (1997) (41)
The energetic efficiency of rumen microbial protein synthesis in cattle given silage-based diets (1985) (40)
The digestion by cattle of silage-containing diets fed at two dry matter intakes (1985) (39)
Effect of sodium and potassium level on the absorption of magnesium and other macrominerals in sheep. (1990) (39)
The effect of in sacco rumen incubation of a grass silage upon the total and D-amino acid composition of the residual silage dry matter (1984) (39)
Nutrition, metabolism, and fertility in dairy cows: 3. Amino acids and ovarian function. (2008) (36)
Carbohydrase activity in the pancreatic tissue and small intestine mucosa of sheep fed dried-grass or ground maize-based diets (1985) (36)
The effect of partially replacing urea nitrogen with protein N on N capture in the rumen of sheep fed a purified diet (1978) (36)
Biotechnology and the rumen: A mini review (1985) (33)
The expression of a putative insulin-like growth factor-I receptor gene in the liver of the developing chick. (1992) (33)
Expression of mRNA encoding insulin-like growth factors I and II and the type 1 IGF receptor in the bovine corpus luteum at defined stages of the oestrous cycle. (2000) (32)
The influence of a formulated excess of rumen degradable protein or undegradable protein on milk production in dairy cows in early lactation (1988) (32)
The digestion by cattle of grass silages made with no additive or with the application of formic acid or formic acid and formaldehyde (1983) (32)
Heat production and heat emission of two breeds of sheep (1960) (32)
3β-Hydroxy-Δ5-steroid dehydrogenase activity in the rapidly growing ovarian follicles of the domestic fowl (Gallus domesticus) (1982) (31)
Insulin-like growth factor I (IGF-I), IGF-II and type-I IGF receptor gene expression in the ovary of the laying hen. (1996) (31)
3 – GUT-ACTIVE GROWTH PROMOTERS (1986) (30)
Changes in insulin-like growth factor binding protein (IGFBP) isoforms during bovine follicular development. (2002) (29)
The digestion of untreated and formaldehyde-treated soya-bean meals and estimation of their rumen degradabilities by different methods (1982) (29)
Production of matrix metalloproteinases by cultured bovine theca and granulosa cells. (2005) (27)
Amino acid requirements and amino acid supply in the sheep (1973) (27)
The expression patterns of mRNA‐encoding stem cell factor, internal stem cell factor and c‐kit in the prepubertal and adult porcine ovary (2004) (26)
The release of mineral elements from grass silages incubated in sacco in the rumens of Jersey cattle (1983) (26)
Biological activity of insulin-like growth factor-I purified from chicken serum. (1990) (25)
Activity of 3β-hydroxysteroid dehydrogenase in the postovulatory follicle of the domestic fowl (Gallus domesticus) (1977) (25)
Expression of transforming growth factor-beta mRNA in chicken ovarian follicular tissue. (1995) (24)
Expression of messenger ribonucleic acid encoding for steroidogenic acute regulatory protein and enzymes, and luteinizing hormone receptor during the spring transitional season in equine follicles. (2004) (24)
Type-I insulin-like growth factor receptor gene expression in the chick. Developmental changes and the effect of selection for increased growth on the amount of receptor mRNA. (1994) (23)
A note on concentrate energy source for dairy cows in mid lactation (1987) (22)
The chemical composition of grass silages prepared with and without pre-treatment with inoculants containing Lactobacillus plantarum (1985) (21)
Changes in aromatase activity in the neuroendocrine tissues of red grouse (Lagopus lagopus scoticus) in relation to the development of long-day refractoriness. (1986) (21)
The variation throughout a year in the fatty acid composition of milk fat from 2 dairy herds (1969) (21)
The administration of sugar solutions to pigs immediately prior to slaughter 1. Effect on carcass yield and some muscle and liver characteristics (1979) (19)
Reduction of proteolysis during ensilage of perennial ryegrass by protease inhibitors (1995) (18)
The effect of environmental conditions on food utilisation by sheep. (1959) (18)
Changes in aromatase activity in small ovarian follicles of the domestic fowl (Gallus domesticus) during growth and atresia. (1985) (18)
The digestion by cattle of silage and barley diets containing increasing quantities of fishmeal (1987) (17)
The digestion by cattle of barley and silage diets containing increasing quantities of soya-bean meal (1986) (17)
The effect of chemical treatment of barley on starch digestion in ruminants (1999) (17)
The retention of certain minerals in pigs from birth to 90 kg live weight (1969) (16)
Calcium, phosphorus, and magnesium absorption and secretion in the bovine digestive tract as influenced by dietary concentration of these elements (1992) (16)
Changes in metabolism of the rumen bacterium Streptococcus bovis H13/1 resulting from alteration in dilution rate and glucose supply per unit time. (1984) (15)
The metabolism of the small intestine: glycolysis in the mucosa of the small intestine of the sheep. (1971) (15)
The influence of dietary concentration of calcium and phosphorus on their retention in the body of the growing pig (1969) (15)
Utilisation of the end products of ruminant digestion. (1957) (15)
Effect of site of starch digestion on metabolic hormones and ovarian function in dairy cows. (2009) (15)
The effect of an intravenous infusion of aldosterone upon magnesium metabolism in the sheep. (1989) (14)
Effect of including barley or molassed sugar beet feed in grass silage diets on their digestion by cattle and sheep (1992) (14)
Gastric mucosal toxicity of duodenal juice constituents in the rat (1994) (14)
Changes in aromatase activity in the brain of the male ring dove (Streptopelia risoria) during the breeding cycle. (1986) (14)
The digestion by cattle of silage-containing diets fed at two dry matter intakes (1985) (13)
Insulin-like growth factors-I and -II and insulin-like growth factor-binding protein-2 in dominant equine follicles during spring transition and the ovulatory season. (2004) (13)
Effect of protein intake on gastrin secretion in ruminants. (1988) (13)
Protection of starch in barley against rumen degradation by glutaraldehyde and formaldehyde as assessed by the dacron bag technique (1999) (12)
The effects upon digestion in sheep of the dietary inclusion of additional salivary salts (1982) (12)
Rumen fermentation studies on two contrasting diets. 2. Comparison of the performance of an in vitro continuous-culture fermentation with in vivo fermentation (1977) (12)
Mesenteric venous blood flow and the net absorption of glucose in sheep fed dried grass or ground maize-based diets (1984) (12)
The heat increment in fasting sheep of acetic acid partially neutralized with sodium hydroxide (1961) (12)
Movements of minerals in the digestive tract of dry and lactating Jersey cows. 2. Net movements of Cu, Fe, Mn and Zn (1976) (12)
Expression of markers of differentiated cell function in the ovarian follicles of sheep carrying the FecB gene. (1998) (11)
Digestion by sheep of ground and unground dried molassed sugarbeet pulp diets and the effect of partially replacing the beet pulp with barley (1989) (11)
NITROGEN LEVELS IN LOW-ROUGHAGE DIETS FOR EFFICIENT RUMEN MICROBIAL PROTEIN PRODUCTION (1977) (10)
The amino-acid composition of potato protein and of cooked potato (2005) (9)
The administration of sugar solutions to pigs immediately prior to slaughter 2. Effect on carcass yield, liver weight and muscle quality in commercial pigs (1979) (9)
An amperometric enzyme electrode for bile acids (1993) (9)
27 – ANTIBIOTICS AS FEED ADDITIVES FOR RUMINANT LIVESTOCK (1984) (8)
An attempted evaluation of the proposed ARC protein system with reference to the lactating cow. (1979) (8)
The effect of methanal (formaldehyde) treatment of casein on its digestion in vivo and in vitro (1986) (8)
The effect of varying the sodium or potassium intake, or both, on magnesium status in the rat (1989) (8)
Effects of drying grass on sites of its digestion in sheep. (1969) (8)
INSULIN AND GLUCOSE METABOLISM IN SHEEP FED DRIED GRASS OR GROUND MAIZE-BASED DIETS (1984) (8)
The effect of LH, FSH and pregnant mares' serum gonadotrophin on ornithine decarboxylase activity in thecal and granulosa tissue during follicular growth and atresia in laying hens (Gallus domesticus). (1994) (8)
Ornithine decarboxylase activity in small ovarian follicles from the laying hen (Gallus domesticus): a comparison of follicles from several regions of the ovary. (1987) (7)
The measurement of 3beta-hydroxysteroid dehydrogenase in ovaries of fowls (Gallus domesticus). (1976) (7)
O-027. Leptin: in-vitro and in-vivo evidence for direct effects on the ovary in monovulatory ruminants (1999) (7)
The Application of Biotechnology for Future Livestock Production (1991) (7)
Changes in metabolism and cell size of the anaerobic bacterium Selenomonas ruminantium 0078A at the onset of growth in continuous culture. (1984) (7)
Changes in ornithine decarboxylase activity in ovarian follicles of the laying hen (Gallus domesticus) during the ovulatory cycle. (1986) (7)
Recent advances in ruminant biochemistry: nitrogen digestion and metabolism. (1983) (6)
Ammonium salts of fatty acids. for milk production. 1. The effect of feeding a salt solution containing ammonium acetate on the yield and composition of milk produced by Jersey cows fed hay/concentrate diets. (1969) (6)
Effect of sodium and potassium on overall digestibility of a semi-purified diet and microbial protein production in the rumen of sheep (1990) (6)
Bovine mural granulosa cells, and not the oocyte, are the major source of proteases capable of IGFBP-2 degradation. (2007) (6)
Expression of mRNA encoding insulin-like growth factor binding protein-2 (IGFBP-2) during induced and natural regression of equine corpora lutea. (2005) (5)
Heat Increments of Feeding in Ruminants (1956) (5)
A note on the influence of Avoparcin on apparent digestibility and nitrogen retention in growing pigs (1983) (5)
Effect of inclusion of saliva salts in the diet on milk yield and composition in dairy cows (1992) (5)
The digestion by sheep of barley and maize-based diets containing either meat and bone meal or soya bean meal (1986) (5)
Some effects of potassium chlorate administration on in vitro and in vivo rumen fermentation (1978) (4)
Sites of digestion in sheep of a dried lucerne fed in three different physical forms. (1969) (4)
Ammonium salts of fatty acids for milk production 2. The effect of feeding a salt solution containing ammonium acetate on the yield and fatty acid composition of Jersey milk fat (1969) (4)
An assessment of the potential of a lactobacilli inoculant as a silage additive (1989) (4)
Changes in 3β-hydroxy-Δ5-steroid dehydrogenase activity in granulosa tissue during the ovulatory cycle of the laying hen (Gallus domesticus) (1985) (4)
The administration of sugar solutions to pigs immediately prior to slaughter. 3. Effect on bacon yield (1979) (4)
Pelleted dried grass and rolled barley diets for lactating dairy cows (1975) (4)
The effects upon rumen microbial protein synthesis of giving sheep diets of rolled barley and hay supplemented with increasing quantities of soya-bean meal (1986) (3)
Development of 3beta-hydroxysteroid dehydrogenase in the ovary of the domestic fowl during sexual maturation. (1976) (3)
Subcellular distribution of delta 5-3 beta-hydroxy steroid dehydrogenase in the granulosa cells of the domestic fowl (Gallus domesticus). (1979) (3)
Type II collagen expression in small, biopsy-sized samples of cartilage using a new method of RNA extraction. (1994) (3)
7 – THE POTENTIAL IMPLICATIONS OF BIOTECHNOLOGY IN ANIMAL NUTRITION (1986) (3)
Is the ex vivo rat gastric chamber model suitable for studying the gastrotoxicity of refluxed duodenal contents? Initial results using deoxycholic acid. (1988) (3)
Control of ovarian function in cattle (1995) (2)
How does nutrition interact with fertility in dairy cows (2008) (2)
3 beta-hydroxy-delta 5-steroid dehydrogenase activity in the rapidly growing ovarian follicles of the domestic fowl (Gallus domesticus). (1982) (2)
Activity of 3beta-hydroxyteroid dehydrogenase in the postovulatory follicle of the domestic fowl (Gallus domesticus). (1977) (2)
4 – CEREAL PROCESSING (1976) (1)
Properties of 5-ene-3 beta-hydroxysteroid dehydrogenase in granulosa tissue from the domestic fowl (Gallus domesticus). (1982) (1)
The in vitro Assessment of an Enzymatic Bile Acid Electrode: A Prelude to Continuous Ambulatory Monitoring of Duodenogastric Reflux (1987) (1)
The living gut: An introduction to micro-organisms in nutrition. 1994: W.N. Ewing and D.J.A. Cole, Published by Context, 117 Carrycastle Road, Dungannon, Co. Tyrone N. Ireland, BT70 1LT. 220 pp HB. ISBN 1 899043 00 4 (1996) (1)
Ammonium salts of fatty acids for milk production. 3. The effect of a salt solution containing ammonium acetate on milk yield and composition in Jersey cows fed on a high concentrate diet (1973) (1)
Discussion (1969) (0)
Comparison of Biological Mechanisms for Conversion of Feed to Meat (1976) (0)
Molecular and functional characteristics of dominant follicles during spring transition in mares: a review (2007) (0)
The Differing Gastrotoxicity of Various Bile Acids; Studies with an ex vivo Rat Gastric Chamber Model (1987) (0)
The effect of different carbohydrate and nitrogen sources on the utilization of amino acids in the small intestine of sheep (1990) (0)
Both Lysolecithin and Bile Acids are Gastrotoxic in the Ex Vivo Rat Gastric Chamber (1988) (0)
The effect of supplementary soya on milk production in the lactating cow and an attempted evaluation of the proposed Agricultural Research Council protein system. (1980) (0)
Changes in 3 beta-hydroxy- delta 5-steroid dehydrogenase activity in granulosa tissue during the ovulatory cycle of the laying hen (Gallus domesticus). (1985) (0)
Effect of gonadotrophins on ovarian 3 beta -hydroxysteroid dehydrogenase in pullets (Gallus domesticus). (1980) (0)
Insulin-like growth factor binding protein-2 (IGFBP-2) mrna in equine follicles during vernal transition and the breeding season (2002) (0)
A5-3p-Hydroxy Steroid Dehydrogenase in the Granulosa Cells of the Domestic Fowl (Gallus domesticus) (2005) (0)
Ultrastructural visualization of protein-4 binding insulin-like growth factors in cow ovarian follicles (1998) (0)
[Ultrastructural localization of protein-4 binding insulin-like growth factors in cow follicles]. (1998) (0)

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