Efficacy of altrenogest in synchronizing estrus in two swine breeding programs and effects on subsequent reproductive performance of sows
Article Abstract:
The use of altrenogest at a dose of 15 mg per animal for 10 to 14 days was effective in synchronizing estrus for cycling gilts and nonpregnant sows. At this level, there were no observed effects on litter size and a low incidence of cystic follicles was found. Farrowing rates for treated gilts in one herd were found to be lower than in controls. The reasons for this are unknown. In the other herd, no differences in farrowing rate was found between treated and untreated gilts and sows. There appears to be a carryover effect in treated gilts, which needs to be studied further.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Effect of feeding organic acids on selected intestinal content measurements at varying times postweaning in pigs
Article Abstract:
Post weanling pigs were given diets supplemented with either fumaric or citric acid to determine the effect of the supplements on intestinal acidity, chloride ion (Cl-) levels, volatile fatty acid content and microfloral profile. Weanlings were sacrificed and the content of the gastrointestinal tract was analyzed. Results show that organic acid supplements had no effect on intestinal acidity and Cl- concentrations. Likewise, volatile fatty acid content was not altered and no conclusive effects were observed on bacterial populations in the gastrointestinal tract.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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Effect of evening or morning weaning and immediate or delayed feeding on postweaning performance of pigs
Article Abstract:
Weanling pigs were studied to determine the effect of evening or morning weaning and immediate and delayed weaning on postweaning performance. The pigs were grouped according to feeding times of 0800, 2000 together with immediate and 12-hour delayed feedings. Results showed that evening weaning reduces variability of gain, increases feed intake and growth rate. This improves postweaning performance often observed in weanlings during the transition period but is not affected by immmediate or delayed intake of feeds after weaning.
Publication Name: Journal of Animal Science
Subject: Zoology and wildlife conservation
ISSN: 0021-8812
Year: 1992
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