نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه علوم دامی دانشکده کشاورزی دانشگاه لرستان خرم آباد ایران
2 گروه علوم دامی دانشکده کشاورزی، دانشگاه لرستان، خرم آباد ایران
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study conducted to use three sources tannin on functional characteristics, blood metabolites and health parameters of Holstein calves. 36 female Holstein calves were assigned to three experimental treatments : ( 1) control group 2) calves fed with tannin supplementation ( 50% oak kernel + 30% elm and 20% pomegranate peel) for 30 days daily 30 gr and 3) calves they were fed tannin supplement for 30 days daily for 60 gr) in a completely randomized design. All calves were weaned at 70 days of age. Feed efficiency, daily weight gain and weaning weight was higher for calves treated with tannin supplementation compared to the control group but Treatments had no significant effect on the amount of dry matter consumed. The highest daily weight gain was observed in the third treatment. Clutch height and cap height were higher in the third treatment compared to calves in the other two groups, but other traits related to skeletal growth were not affected by experimental treatment. Stool scores, days of diarrhea and rectal temperature were affected by experimental treatments. Total white blood cell and neutrophil counts were significantly higher in calves receiving Tannin supplementation was lower. In general, the use of a combination supplement of oak, pomegranate peel and elm improves the performance of calves and leads to strengthening the immune system and reducing disease.
کلیدواژهها [English]
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