Browsing by Subject "Reproduction"
Now showing items 21-40 of 83
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(2020-06-10)In recent years, women’s reproductive healthcare has gained much attention. This is in part due to the work of the reproductive justice movement, which has exposed the ways in which reproductive health is stratified by ...
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(Texas A&M University. Libraries, 1989)The results of laboratory tests indicated diapausing Psorophora columbiae eggs were more tolerant to the low temperatures used (8° to -6°C) than were non-diapausing eggs, particularly at temperatures equal to and below ...
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(Texas A&M University. Libraries, 1980)A series of three experiments were undertaken characterizing the Brahman cow as a seasonal breeder. The addition of light to create a daylength of 14 hours appeared to increase the reproductive capabilities of Brahman ...
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(Texas A&M University. Libraries, 1979)Equine spermatozoa were subjected to both in vivo and in vitro treatment and subsequently evaluated for evidence of capacitation. In vivo treatments consisted of incubating freshly ejaculated spermatozoa for intervals of ...
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(Texas A&M University. Libraries, 1985)Three experiments were conducted to investigate the effects of negative energy balance (NEB) on reproductive activity in cattle. In experiment I the interrelationships of body weight (BW), retained energy (RE), plasma ...
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(Texas A&M University. Libraries, 1984)The present study tested 3 different hypotheses: (1) high levels of progesterone (P(,4)) at artificial insemination (A.I.) impair ova fertilization and early embryo survival in superovulated cows; (2) bovine embryos infected ...
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(Texas A&M University. Libraries, 1987)Separate groups of Culex quinquefasciatus Say, UTMB strain, were exposed for 24 hrs as fourth instar larvae to sublethal concentrations of malathion, methoprene, propoxur and resmethrin. Effects on the insecticide-exposed ...
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(2017-07-26)The potato psyllid, Bactericera cockerelli (Šulc), is a phloem-feeding insect with preference for Solanaceae. This insect species transmits the pathogenic bacteria ‘Candidatus Liberibacter solanacearum’ (Lso) the causative ...
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(Texas A&M University. Libraries, 1993)Efforts to breed the endangered Asian elephant in captivity have historically been difficult because of our primitive understanding of musth. Long-term endocrinological studies of musth are needed; however, it is often ...
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(Texas A&M University. Libraries, 1979)Channel catfish from two domestic strains and two wild strains, and intraspecific crosses between strains were evaluated under aquacultural conditions. Growth studies were conducted in tanks, cages, and communal ponds. ...
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(2010-10-12)The objectives of these studies were (1) evaluate the relationship between temperament, blood parameters, and performance in Brahman calves (n = 300); (2) evaluate the relationship between residual feed intake (RFI) and ...
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(Texas A&M University. Libraries, 1987)The influences of age and dietary energy intake on the hypothalamic-hypophyseal-testicular axis of developing Brahman bulls are not well understood. Two experiments were conducted to examine these relationships. In the ...
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(Texas A&M University. Libraries, 1992)Studies were performed to evaluate postpartum (PP) hormonal profiles in beef cattle. One study examined the effect of aspirin (A) feeding on PP endocrine profiles and reproductive function. The second study evaluated the ...
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(Texas A&M University. Libraries, 1987)Brahman-cross cows (day 11 or 12 of the estrous cycle) were used to study the effects of prostaglandin-induced luteolysis on the corpus luteum (CL). Four cows (0 h controls) were injected (sc) with saline while 16 cows ...
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(Texas A&M University. Libraries, 1983)In the first experiment twenty-four postpartum mares were infused on days two and three with either: (1) .2mg of estradiol benzoate (E(beta)) in a carrier 6 of 60 ml of physiologic saline, (2) 1 x 10('6) units of K Pencillin ...
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(Texas A&M University. Libraries, 1980)A study was conducted to determine the fertilization rate, incidence of embryonic mortality by day 35, and luteal progesterone secretion (in vitro) in Brahman crossbred heifers. On hundred fifty-five virgin heifers were ...
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(Texas A&M University. Libraries, 1987)Data from a purebred Rambouillet range flock between the years of 1919 and 1985 were analyzed to determine: the relationship of age, body weight, birth type, sex of natal twin on lamb and fleece production, and longevity; ...
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(2012-10-19)Sexual selection has long been a working explanation for the elaboration of appreciable traits in plants and animals, but the idea that it is an equally potent agent of change at the level of individual molecules is ...
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(Texas A&M University. Libraries, 1987)Breeding, calving and weaning records of cows produced in a diallel of Angus, Brahman, Hereford, Holstein and Jersey were used to characterize these breed types for measures of female productivity. First-generation crossbred ...
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(Texas A&M University, 2005-02-17)Reproductive, maternal, and weight traits were analyzed for Angus (A), Brahman (B), and Hereford (H) straightbred cows; F1 and F2 BA and BH cows; and 3/8 B 5/8 A first (Bn) and second (Bn2) generation cows in Central ...