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At least 325 records · Page 18Linked to original sources
PubMed1985

[Adaptation of breeding swine to high environmental temperatures and delimitation of tolerance ranges of thermically stressed swine populations].

Proceeding from the morphological and physiological specifics of pigs as to their adaptation to high ambient temperatures, the paper presents recent international findings on problems of the thermal tolerance of breeding pigs active in reproduction. The effect of humidity and air speed near the animals are summarized in attempting to delimitate tolerance levels for thermal stress to pigs, and conclusions are drawn for the amelioration of the climate.

Adaptation, Physiological↗
PubMed1979

[Control of swine parturition. 1. Results of clinical, histological and hematological studies of parturition induction in swine using prostaglandin F2 alpha].

Parturition was induced to 23 sows on the 112th day of pregnancy by intramuscular injection of 7.5 mg PGF2 alpha (Dinoprost-Upjohn Co.). Onset of parturition was achieved within 27 hours and 52 minutes +/- four hours and 54 minutes in 21 animals (91.3 per cent). Average litter size was 11.33 piglets, with parturition time per litter having been five hours and 45 minutes +/- two hours and 39 minutes. Stillbirths accounted for 6.3 per cent. The average birth weight, 1.245 g +/- 264 g did not differ with significance from that of the controls. The physiological process accompanying parturition is described in greater detail. Unobstructed re-intergration with further reproduction of animals which had received PGF2 alpha treatment is established with hard evidence on the basis of clinical examination of oestrus, ovulation, conception, and farrowing rates as well as by histological examination of the endometrium. Alterations in the blood state recorded from animals with PGF2 alpha treatment close to full term were identical with those recorded from untreated animals.

Animal Husbandry↗