Department of Animal Reproduction, Gynaecology & Obstetrics, College of Veterinary Science and Animal Husbandry, Anand Agricultural University, Anand-388 001, Gujarat.
The study was carried out on 22 crossbred cows of a Panjarapole to know the variation in metabolic profile due to physio-pathological status of the cows. After thorough gynaeco-clinical examination of all animals for their reproductive status twice 10 days apart, the cows were divided into two groups, viz. cyclic (n=12), and noncyclic (n=10) group. The noncyclic/anoestrus group of animals was fed mineral supplements @ 50 g/d/h for 15 days prior to i/m administration of 0.02 mg GnRH (Receptal, 5 ml). The animals exhibiting estrus were inseminated and pregnancy was confirmed per rectum 45 days later. Out of the total 12 cycling animals, 7 animals conceived in the cycle monitored. Among GnRH treated cows 3 (30%) exhibited oestrus, but none conceived at induced oestrus. Blood samples were collected at 11 days intervals over 2 months period from all animals. The blood glucose (93.67±3.78 vs 49.15±2.14 mg %) and plasma cholesterol (165.43±4.56 vs 109.80±5.25 mg %) levels were significantly (P< 0.01) higher in cyclic as compared to anoestrus cows. Glucose was also significantly higher in conceiving than non-conceiving cows. The values of plasma total proteins (g %) in cyclic and anoestrus animals were 6.94±0.11 and 7.74±0.13 (P<0.05), respectively. The levels of plasma triglycerides, however, did not show significant variation between cyclic and anoestrus (96.01±4.20 and 102.51±4.52 mg %)cows or even conceiving and non-conceiving cows. Moreover, none of the traits differed significantly due to period effect post-AI or post-treatment.
Crossbred cows, Estrus cycle, Reproduction, Anoestrus, Blood metabolites
