Reproduction in Domestic Animals
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Mammalian Sperm Energy Resources Management and Survival during Conservation in Refrigeration
Reproduction in Domestic Animals - Tập 41 Số s2 - Trang 11-20 - 2006
ContentsThe present review has as its main aim to present an overview regarding
the mechanisms utilized by mammalian sperm to manage its intracellular energy
levels. This management will strongly influence the sperm's ability to maintain
its overall function during its entire life span. Thus, the precise knowledge of
these mechanisms will be of the utmost interest to optimize the systems utilized
...
Is Sperm Freezability Related to the Post‐Thaw Lipid Peroxidation and the Formation of Reactive Oxygen Species in Boars?
Reproduction in Domestic Animals - Tập 48 Số 2 - Trang 177-182 - 2013
ContentsThe aim of the present study was to determine whether the levels of
reactive oxygen species (ROS) substances production and the levels of lipid
peroxidation of the sperm membrane were related to the quality that the
ejaculates exhibited after cryopreservation in boars. Ejaculates from 42 healthy
boars were used in this study and they were cryopreserved with the lactose‐egg
yolk extender (L...
Capacitation and Capacitation‐like Sperm Surface Changes Induced by Handling Boar Semen
Reproduction in Domestic Animals - Tập 46 Số s2 - Trang 7-13 - 2011
ContentsSince it has been well recognized that reproductive technologies, such
as cryopreservation and sex‐sorting, have a detrimental impact on sperm quality.
These procedures cause sperm membrane destabilization which resembles that of
capacitation. The pathways of this complex biochemical event are slowly
unravelling, including the vital role of coating and decoating factors on the
sperm surfac...
Long Chain Fatty Acids of Diet as Factors Influencing Reproduction in Cattle
Reproduction in Domestic Animals - Tập 43 Số s2 - Trang 23-30 - 2008
ContentsCattle are fed moderate amounts of long chain fatty acids (FA) with the
objective to enhance lactation and growth; however, recent interest on lipid
feeding to cows has focused on reproduction, immunity and health. Increasing the
caloric density of the ration by fat feeding has generally improved measures of
cow reproduction, but when milk yield and body weight losses were increased by
fat...
Supplementation with Calcium Salts of Linoleic and trans‐Octadecenoic Acids Improves Fertility of Lactating Dairy Cows
Reproduction in Domestic Animals - Tập 45 Số 1 - Trang 55-62 - 2010
ContentsObjectives were to evaluate effects of feeding a calcium salt rich in
linoleic and trans‐octadecenoic acids (LTFA) on synthesis of prostaglandin F2α
based on its metabolite (PGFM), uterine involution and pregnancy rates in
lactating dairy cows. Five hundred and eleven Holstein cows were blocked
according to parity, body condition score and milk yield in the previous
lactation. Primiparous ...
The In Vitro Development of Bovine Oocytes after Maturation in Glucose and β-Hydroxybutyrate Concentrations Associated with Negative Energy Balance in Dairy Cows
Reproduction in Domestic Animals - Tập 41 Số 2 - Trang 119-123 - 2006
Evaluation of the Lipid Content in Bovine Oocytes and Embryos with Nile Red: a Practical Approach
Reproduction in Domestic Animals - Tập 40 Số 1 - Trang 76-78 - 2005
ContentsIn this study, the fluorescent lipid dye Nile Red, was used to
demonstrate that the lipid content of immature bovine oocytes is correlated with
the morphological appearance of the ooplasm. Oocytes with a uniform dark
cytoplasm contained significantly more intracellular lipids in lipid droplets
compared with oocytes with a granulated or pale cytoplasm (p < 0.05).
Furthermore, this lipid‐ana...
Effects of Clinical Mastitis on Ovarian Function in Post‐partum Dairy Cows
Reproduction in Domestic Animals - Tập 40 Số 3 - Trang 199-204 - 2005
ContentsMastitis‐induced ovarian abnormalities were studied in a field trial. At
1–3 day after calving, ≥2 parity cows not affected with chronic recurrent
mastitis and yielding <400 000/ml somatic cell count (SCC) individual milk in
the previous lactation, were enrolled in the study. Thereafter milk samples were
collected three times weekly for 95–100 day for progesterone (P4) assay.
Individual P4...
In vitro Follicle Growth: Achievements in Mammalian Species
Reproduction in Domestic Animals - Tập 36 Số 1 - Trang 3-9 - 2001
The exact mechanisms regulating in vivo folliculogenesis in mammalians have only
been partly unravelled. Some processes, such as the initiation of growth of
primordial follicles are still poorly understood. This increases the difficulty
to culture follicles in vitro as the primordial follicles will be the ultimate
starting material for culture.There are important species differences in
regulation ...
Effects of Endocrine Disrupters on the Oocytes and Embryos of Farm Animals
Reproduction in Domestic Animals - Tập 40 Số 4 - Trang 291-299 - 2005
ContentsCurrently, approximately 60 chemicals have been identified as endocrine
disruptors (EDs): exogenous agents that interfere with the synthesis, secretion,
transport, metabolism, binding, action, or elimination of natural blood‐borne
hormones. Farm animals ingest these substances with food and drinking water.
Their stability and lipid solubility has led to increased concern that these
substan...
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