Feed restriction in cyclic gilts: gonadotrophin-independent effects on follicular growth
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چکیده
منابع مشابه
Feed restriction in cyclic gilts: gonadotrophin-independent effects on follicular growth.
Our objective was to determine whether changes in metabolic hormones, induced by feed restriction, can alter follicle distribution in swine ovaries through effects independent of LH pulsatility. In a factorial arrangement, 24 gilts were fed a high or a low level of dietary energy (240 or 80% of maintenance requirements) and given an antagonist of GnRH or saline between days 3 and 12 of the oest...
متن کاملEffects of gonadotrophin deprivation on follicular growth in gilts.
The endocrine and ovarian effects of hypophysectomy (n = 5) and gonadotrophin-releasing hormone (GnRH) antagonist administration (Antarelix) (n = 5) were studied in gilts by comparison with control animals (n = 6). All gilts were given Regumate (20 mg/d for 18 d). The last day of Regumate was day 0. Hypophysectomy and initiation of Antarelix administration (0.6 mg iv twice daily for 7 d) were p...
متن کاملInfluence of insulin treatment and feed restriction on follicular development in cyclic gilts.
Crossbred gilts were used to investigate whether exogenous insulin can restore normal follicular growth in feed-restricted gilts. After an 18-day altrenogest treatment, the first day of oestrous behaviour was designed as day 0. From day 0 to 13, all gilts received the same amount of feed, calculated to meet 200% of the energy requirements for maintenance. On day 14, luteolysis was induced by in...
متن کاملEffects of different feed restriction periods on the growth and fatty acid compositions in juvenile rainbow trout (Oncorhynchus mykiss)
The aim of this study was to determine the effect of different feed restriction periods on the growth performance as well as the biochemical and fatty acid compositions of fillet in rainbow trout (Oncorhynchus mykiss). Fish with an average initial weight of 64.80±7.41g were used in the study. The trial lasted 60 days and 4 different feeding diets were alternately applied to the fish. The contro...
متن کاملEffects of different patterns of feed restriction and insulin treatment during the luteal phase on reproductive, metabolic, and endocrine parameters in cyclic gilts.
The objectives of the present study were 1) to study potential effects of previous nutritional treatment on developmental competence of early fertilized oocytes in vitro; 2) to study responses to insulin treatment during the period of feed restriction in the late luteal phase which has deleterious effects on subsequent fertility; and 3) to establish the metabolic and endocrine status of gilts d...
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ژورنال
عنوان ژورنال: Reproduction Nutrition Development
سال: 2000
ISSN: 0926-5287,1297-9708
DOI: 10.1051/rnd:2000108