César Alberto Meza-Herrera

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  • Universidad Autónoma De Yucatán, México López-Medrano, J I Meza-Herrera, C A González-Bulnes, A Torres-Moreno, M Mellado-Bosque +8 others
  • 2015
SUMMARY Thyroid hormones and their receptors in the ovaries are active regulators of reproductive function; both hyper-and hypo-thyroidism may result in estrous cycle disturbances. In addition, thyroid hormones elicit an extraordinary multiplicity of biochemical, cellular, and physiological responses, both in the simplest and the most complex organisms. On(More)
Two trials were conducted to evaluate the effect of diverse socio-sexual cues upon male sexual behavior and the reproductive performance of anestrous does (AD). Trials were conducted in northern Mexico (26°N) during the natural anestrous season (Feb-Mar) with crossbred dairy bucks. In Experiment 1, sexually inactive bucks (SIB, n=12) were randomly allotted(More)
The aim of this study was to test if vitamin E supplementation during late gestation and early lactation would affect the weight of ewes under nutritional restriction and the performance of their lambs. Mature Rambouillet ewes (n = 37) were fed a diet that supplied 70 % of the energy and 80 % of recommended protein requirements and randomly assigned to(More)
The effect of two divergent nutritional levels during late pregnancy upon some physiological variables and the number (NC) and diameter (DC) of placental cotyledons along with litter weight at birth (LWB) on heat-stressed (42-45 °C) hair ewes was evaluated. Multiparous Katahdin x Pelibuey ewes (n = 24) at the onset of the 3/3 of pregnancy were randomly(More)
Contents 1. Introduction: Interface between nutrition, reproduction and animal production 2. Basic aspects on intermediary metabolism: Hormonal control of energy homeostasis 3. Basic aspects of reproduction: Neuroendocrine regulation 4. Integration of nutrition and reproduction: Neuroendocrine mechanisms 5. Direct roles of nutrition in modulating(More)
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