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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"Animal Reproduction"”.
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Luteinizing hormone and progesterone dynamics in the early pregnancy of the sow
… axis is the endocrinological pathway of reproduction, where fertility is adjusted and fine-tuned with respect to intrinsic and extrinsic information. The pituitary gland receives the information that determines secretion of luteinizing hormone (LH) from the hypothalamus in the form of …
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MicroRNA expression and function during porcine oocyte maturation and early embryonic development
… in the pig is essential to improving farm animal reproduction efficiency. Many reproductive tissues are associated with a high degree of transcriptional and translational turnover that may be in part regulated by non-coding RNA such as microRNA (miRNA). The oocyte consists of a storage of …
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An analysis of lambing ewes three times in two years in Southland
This study examines the management and profitability of three lambings in two years under Southland conditions, and how they compare with those of a conventional Southland farming system. There has been little work done world wide but what overseas literature there is suggests that lambing ewes …
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Desarrollo de Embriones Sexados de Raza Holando Argentino
Munar y Asociados SA (MYA), es una empresa PyMe (Pequeña y Mediana Empresa) dedicada a proveer servicios para la producción de embriones de genética superior desde 1981. Los embriones se obtienen a través del Sistema de Reproducción Multiple Ovulation Embryo Transfer (MOET) e Inseminación …
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Control of LH secretion in red deer (Cervus elaphus)
… in oestradiol-treated hinds than in control animals, suggesting that pituitary responsiveness to GnRH was partly suppressed by oestradiol treatment. This indicated that in red deer hinds oestradiol achieved its negative feedback effects at both hypothalamic and pituitary gland sites. Another …
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Cervical artificial insemination in sheep
Results are reported from a fresh semen cervical artificial insemination trial in April 1989 at the Lincoln College Research Farm. One hundred and ninety Coopworth ewes were inseminated over 5 days. Semen was collected twice daily from four Dorset Down rams using an artifical vagina (A.V.). …
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An attempt to advance seasonal reproductive activity in stoats (Mustela erminea) by use of an artifical photoperiod: A dissertation submitted in partial fulfilment of the requirements of the Degree of Bachelor of Science with Honours at Lincoln University
… a requirement for year-round breeding in captive animals. This study tested the hypothesis that a long-day photoperiod applied to stoats during winter months would stimulate reproduction in these animals. Adult stoats (12 males and 12 females) were captured from the wild during summer and autumn. …
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Administration of arginine does not alter material circulating concentration of C-type natriuretic peptide in pregnant sheep: A thesis submitted in partial fulfilment of the requirements for the Degree of Bachelor of Science with Honours
C-type natriuretic peptide (CNP) circulates at higher levels in the circulation of ewes pregnant with multiple fetuses than in those with singletons. Because parenteral administration of arginine can mitigate the nutritional constraint that occurs in multi-fetal pregnancies, it was hypothesised …
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Lamb wastage and its association with ewe body condition
The effect of ewe body condition and live weight, and change in these factors, on lamb wastage was examined in a composite (principally Coopworth) flock of small- or large-framed ewes. Approximately equal sized flocks of small- and large-framed ewes, balanced for age and condition were selected …
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Níveis de treonina digestível para porcas em lactação
Foram conduzidos dois experimentos com o objetivo de avaliar níveis de treonina digestível para porcas em lactação. No experimento I, foram utilizadas 76 fêmeas lactantes, de médio potencial genético, com peso inicial de 207,0 ± 32,0 kg e ordem de 3,5 ± 2,11 partos, distribuídas em delineamento …
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Gene variations of FABP4, SCD, GH, and IGF1R and their associations with meat and carcass traits in sheep : A thesis submitted in fulfilment of the requirements for the Degree of Doctor of Philosophy at Lincoln University
… Enhancing economically valuable traits in animal production is a primary focus, achievable through biotechnological approaches such as marker-assisted selection. This method leverages genetic variations within candidate genes that influence production traits, guiding animal breeding efforts …