1,721,040 research outputs found
Effetti della somministrazione parenterale di beta -carotene e vitamina E allo svezzamento sulla fertilità della scrofa
No full textThe effect of a single intramuscular (i.m.) beta -carotene (one mg/kg body weight) and vitamin E (1.3 mg/kg b.w.) administration on the day of weaning was evaluated in a swine herd for a period of one year. The proportion of sows in oestrus at different times of weaning, pregnancy rate and number of piglets born alive were considered, as well as environmental humidity and temperature conditions on the day of insemination (IS). The number of sows with a weaning-oestrus interval no longer than 5 days was significantly (p=0.01) higher in the treated group (126/142) compared to the control group (110/143). The pregnancy rate was also significantly (p<0.01) higher in the treated group (76.7%) than in the control group (61.5%). A double risk for pregnancy was observed in the treated sows (odds ratio=2.0644). On the other hand, insignificant differences were observed in the number of piglets born alive between the 2 groups. Concerning the environmental conditions recorded on the day of insemination, a significantly higher pregnant sow number was found when IS was performed at a temperature of <30 deg C (80.9 vs 60%, p<0.005) and humidity of more than or equal to 70% (78.8 vs 50%, p<0.005). The index of piglets born alive was unaffected by the treatment in any environmental condition. The statistical analysis confirmed that the environmental conditions to obtain better results were characterized by a <30 deg C temperature and <70% humidity
Relationship between pharmacological induction of estrous and/or ovulation and twin pregnancy in the Thoroughbred mares
No full textThe aim of this study was to evaluate the possible relationship of pharmacological induction of estrous and/or ovulation with the occurrence of twin pregnancies in Thoroughbred mares. Out of 680 mares, 356 received one of the following treatments during the estrous cycle in which they became pregnant: injection of 0.5 mg of cloprostenol at the ultrasonographic detection of a CL (n=86); injection of 5000 IU human chorionic gonadotropin (hCG) immediately before mating (n=221); injection of 0.5 mg of cloprostenol at the ultrasonographic detection of a CL plus injection of 5000 IU hCG immediately before mating on cloprostenol-induced estrous (n=49). The other 324 mares, not treated for induction of estrous or ovulation in the estrous cycle resulting in pregnancy, were used as control group. The occurrence of twin and single pregnancies in treated and control mares underlines that the percentage of twin pregnancy in treated mares (16.6%) was statistically significantly higher (p<0.0001; odds ratio, OR=2.87) than the percentage of twinning in the control group (6.5%). Comparison of the occurrence of twins between treatments revealed a statistically significant difference between mares treated with hCG alone compared to animals given prostaglandin F2α(PGF2α) plus hCG. The results show a statistically significant difference for each treatment compared to controls, with the least difference (p<
0.05; OR=2.18) for the comparison between hCG treatment group and controls, a significance of p<0.01; OR=3.05; for the comparison between PGF2α treatment and controls, and a highly statistically significant difference (p<0.0001; OR=6.37) for the comparison between PGF2α plus hCG-treated animals and controls
Valutazione della pressione intramammaria in scrofe dopo trattamento con PGF 2 alfa (alfaprostol) e con ossitocina
No full text
Effetti della somministrazione di una preparazione di ferrodestrano su alcuni parametri ematochimici dei vitelli.
No full text- …
