Increased postnatal growth rates of offspring after antiestrogen treatment of rat dams during pregnancy
Article Abstract:
Prenatal anti-estradiol given to rat dams at 12 days of gestation resulted in offspring with 12.2% higher body weight. Furthermore, the increased birth weight of the pups continued into their postnatal life. There were no significant differences in the chemical composition of the carcasses of both treated and control groups although there was increased percentage of body fat in the treated group. This may be important in increasing the growth performance of meat-producing animals without treating the animals themselves.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Tertiary myotubes in postnatal growing pig muscle detected by their myosin isoform composition
Article Abstract:
The development of skeletal muscles of growing pigs was studied by indirect immunoperoxidase staining. Anti-NE serum, which reacts with neonatal and embryonic myosins, detected few small fibers or tertiary myotubes in the porcine semimembranosus and longissimus muscles of 8-day old pigs. A gradual decrease in the number of these fibers was associated with a gradual increase in area of Type I and II fibers from 8 to 210 days. These data suggest that hyperplasia of pig skeletal muscle continue in the postnatal period.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Influence of carbadox on fasting oxygen consumption by portal vein-drained organs and by the whole animal in growing pigs
Article Abstract:
The influence of carbadox on fasting oxygen consumption by portal vein-drained organs was determined by putting chronic catheters into the portal vein, ileal vein and carotid artery of ten pigs. Oxygen consumption was measured by indirect calorimeters. Carbadox was supplemented in the diet of some pigs and assays show that it reduces the energetic requirements of the gastrointestinal tract, spleen and pancreas. The energy spared by the process is diverted to other growth needs of the animal.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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