Radioimmunoassay of milk progesterone as a tool for fertility control in smallholder dairy farms.
M Shamsuddin, MMU Bhuiyan, PK Chanda, MGS Alam, D Galloway
Tropical Animal Health and Production | Published : 2006
This study focused on the use of radioimmunoassay of progesterone in milk for the diagnosis of post-partum ovarian cyclicity and accurate detection of oestrus and non-pregnancy in cows in the artificial insemination (AI) programme in Bangladesh. In Investigation 1, milk samples were collected on day 0 (day of AI), day 9-13 and day 21-24 from 444 milking cows of various breeds presented for the first postpartum insemination by 413 farmers living at 182 villages/regions in Mymensingh District from 6 AI centres and sub-centres. Each cow was then examined three times after each AI until it stopped returning to oestrus. Sixty to 90 days after the last AI, the cows were examined per rectum to conf..View full abstract