نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی، پردیس کشاورزی و منابع طبیعی دانشگاه تهران، کرج، ایران
2 پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، تخصص: فیزیولوژی دام
3 پردیس کشاورزی و منابع طبیعی، تخصص: تولیدمثل/ کشت سلول/ سلول های بنیادی/ نانوتکنولوژی
4 پردیس کشاورزی و منابع طبیعی، دانشگاه تهران، تخصص: فیزیولوژی تولیدمثل
5 استاد گروه مهندسی علوم دام، دانشکده علوم و مهندسی کشاورزی دانشگاه تهران
کلیدواژهها
عنوان مقاله English
نویسندگان English
The insulin resistance and glucose, insulin, IGF-1 metabolism (somatotropic axis performance) were investigated in cows to receive (4 g yeast/d/head) (Probio-Sacc®, BioChem, GmbH, Germany) or not receive live yeast supplement from 21 d before expected date of calving under the hot months of summer (THI = 82). Two groups of 6 periparturient Holstein cows were fed a diet without or with 4 g yeast/d/head (15*109 CFU/g) starting 21 d prepartum through 8 weeks postpartum to investigate the changes of blood concentrations of glucose, insulin, IGF-1 and glucose tolerance test (GTT). On d 60 postpartum, greater blood levels of glucose, insulin and insulin-like growth factor I were found in cows receiving yeast supplement than those receiving no yeast (P<0/05). Probiotic had not significant effect on GTT test. Overall, it appears that Probiotics would beneficially improve the blood concentrations of glucose, insulin, IGF-1 in day 60 postpartum (on DFS day) and improve somatotropic axis of dairy cows during the heat stress. Probiosac probiotic had positive effects on somatotropic axis and animal performance. It’s can be a good solution to increase dairy cow’s performance in heat stress condition.
کلیدواژهها English
