Effect of Supplementation of Bypass Fat and Mineral Mixture on Uterine Involution and Fertility in Gir Cows
DOI:
https://doi.org/10.48165/ijvsbt.20.5.24Keywords:
Bypass fat, Cattle, Conception rate, Involution, Mineral supplement, PeripartumAbstract
The study was carried out on 18 advanced pregnant Gir cows, under two treatment (Group I, II) and control (Group III) groups, 6 cows in each. The cows under Group III were maintained as per routine farm feeding schedule, while cows under Group I and II were supplemented with mineral mixture containing rumen protected methionine and lysine @ 50 g/day/head. Additionally, animals in group I were supplemented with bypass fat @ at least 100 g/d/h during 30 days prepartum till 60 days postpartum. The postpartum reproductive events were monitored by USG (5-10 MHz linear array transducer). The mean cervical diameter and wall thickness in cows under control Group III were the highest on all days postpartum as compared to nutrient supplemented groups I & II. The values on day 7 were highest in all three groups and decreased gradually (p<0.01) on days 14 and 28/42 postpartum. The mean diameter and wall thickness of gravid uterine horn were not influenced by the nutrient supplementation in cows, and the values in all groups decreased gradually (p<0.01) from day 7 to 14 till day 28 postpartum, which thereafter did not vary much. The mean period of uterine involution and days for first estrus postpartum in treated Group I and II were significantly (p<0.05) lower than control Group III, with inverse finding on mean service period and conception rate (83.33, 33.33 and 16.66% in Gr I, II, III, resp) by day 120 postpartum. The bypass fat and mineral mixture supplementation had positive effects on uterine involution, early onset of postpartum estrus, better conception rate and reduced service period.
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