نتایج جستجو برای: estrus behavior
تعداد نتایج: 624085 فیلتر نتایج به سال:
The present study was conducted on the Murrah buffaloes maintained at Livestock Research Centre of ICAR-National Dairy Research Institute (NDRI), Karnal. The animals were classified into heifer, primipara and pluripara. For this experiment a total of 50 Murrah buffaloes were followed, out of which 8 were heifers, 12 were primipara and 30 were pluripara. Daytime was considered to be from 6.00 am...
Abstract Background & aim: Formostontin is a non-steroidal phytostrogenic polyphenolic plant with estrogen-like properties found in some plants, including red clover. The aim of the present study was to determine the effects of formostontin during pregnancy on the onset of puberty, estrus cycle, genital weights and their children's lordosis behavior. Methods: In the present experimental stu...
i. Normative data from the anestrous, estrous, and post-estrous periods of females .. .275 2. The response of individual females to individual males 277 3. Behavior in the circle when females were in estrus . . . . 277 4. A comparison of present and previous mating preferences 28I 5. Behavior in the circle when females were in nonestrus 282 6. Temporal changes during estrus .. .282 7. Individua...
Background and Objectives: Since intra-paragigantocellularis lateralis (LPGi) injection of 17β-estradiol induces strong analgesia in male rats which might be mediated via estrogen receptors, this study investigated the role of estrogen receptors of LPGi nucleus in the modulation of formalin-induced pain (while being stimulated by 17β-estradiol) during estrus phase in female rats. Materials and...
Virgin rodents exhibiting cycling estrus have traditionally been used for comparative studies of reproductive behavior. However estrus occurs in other life-history contexts, some of which differ from cycling estrus (CE) in that (a) the female is disposed to behave both maternally and sexually and (b) they result in litter overlap (i.e., the simultaneous gestation and lactation of two litters). ...
Title of Thesis: THE EFFECTS OF NEONATAL OXYTOCIN ON SEXUAL MATURATION AND THE EXPRESSION OF SOCIOSEXUAL REPRODUCTIVE BEHAVIOR IN FEMALE RATS Thomas F. Withuhn, Master of Science, 2004 Thesis directed By: Professor Bruce S. Cushing Department of Biology While the role of oxytocin (OT) in regulating adult behavior data is thoroughly documented, increasing evidence suggests that neonatal exposure...
The objective of this experiment was to determine the relative importance of olfaction and visual observation of heifer mounting behavior to the detection of estrus by bulls. An observation pen was designed to allow the evaluation of the preference of five sexually experienced bulls under three sets of stimuli. The observation pen was 4 m x 17 m with a smaller enclosure (2 m x 4 m) at each end ...
To evaluate an artificial insemination program in postpartum Bos indicus cows and by using deterministic models, to estimate the possible economic advantages of insemination by appointment over detected estrus, sixty-three multiparous animals were synchronized using a progestagen device inserted at day 31 and withdrawn after 9 days (average time for withdrawal was 40.9 ± 6.8 days). Cows were ob...
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