التفاصيل البيبلوغرافية
| العنوان: |
Effects of dietary supplemented with coated folic acid on milk production and reproductive performance of dairy cows. (English) |
| المؤلفون: |
CHENG Yu, PENG Xia-yu, WEI Yong, ZOUA-ling, MIAO Miao, WEI Tian-yu, ZHANG Sha-sha, LIZhi-xing |
| المصدر: |
Feed Research; 2024, Vol. 47 Issue 20, p1-6, 6p |
| مصطلحات موضوعية: |
MILK yield, DAIRY cattle, DIETARY supplements, LACTATION in cattle, FOLIC acid, DAIRY farms, MILK proteins |
| مستخلص: |
The experiment aimed to investigate the effects of coated folic acid supplementation in feed on the milk production performance, reproductive performance, and reproductive hormone levels in early lactation dairy cows. A total of 80 Holstein cows were selected five weeks postpartum and randomly divided into four groups with 20 replicates in each group and one cows per replicate. Group A (control group) was fed a basal diet, while Groups B, C, and D were supplemented with 35, 70, 105 mg/(cowday) of encapsulated folic acid in their basal diet, respectively. The preliminary period lasted for seven days, and the formal experimental period was 82 days. The results showed that Groups C and D had significantly higher milk production in August compared to Group A (P<0.05). In September, Group C had a significantly higher milk protein percentage than Groups A, B, and D (P<0.05). The first service conception rate for Groups C and D increased by 2.95% and 5.25%, respectively, compared to Group A, and the pregnancy rate at 150 days increased by 5.88% and 2.02%, respectively. At day 21, the estradiol (E2) content in Group A was significantly higher than in Groups C and D (P<0.05), while the progesterone (P4) content in Groups C and D was significantly higher than in Group A (P<0.05). The study indicates that the supplementation of 70 mg/(cow • day) of encapsulated folic acid in the diet can help improve the milk production and reproductive performance of high-yielding dairy cows in large-scale dairy farms. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |