TAILIEUCHUNG - Incidence of silent oestrus and an investigation of reproductive status in crossbred cows under field conditions of assam

The present study was carried out in a total of 673 postpartum crossbred cows of first to fifth lactations maintained under stall fed conditions at different Government and private farms from Kamrup Metro, Cachar and Udalguri district of Assam. All the postpartum crossbred cows were examined per rectum to determine the reproductive status based on the owner’s history and the incidence of cows with silent oestrus was worked out. Results revealed that a total of 86 crossbred cows () reported to be anestrous were identified as silent oestrus on the basis of presence of either uterine tone or corpus luteum or Graafian follicle on clinico-gynaecological examination. The district-wise incidence of silent oestrus was found to be , and per cent in Kamrup Metro, Cachar and Udalguri district respectively. Reproductive status of the crossbred cows other than anoestrus investigated were pregnant, recently calved, repeat breeder, true anoestrus, chronic cervicitis, metritis, ovaro-bursal adhesion, cystic ovary and normal oestrus with the percentage frequencies of , , , , , , , and respectively when estimated out of the total number of postpartum cows. | Incidence of silent oestrus and an investigation of reproductive status in crossbred cows under field conditions of assam

• Nông nghiệp
• Crossbred cows
• Silent oestrus
• Field conditions of assam
• Investigation of reproductive status
• Silent oestrus
• Bypass fat
• Conception rate
• Silent oestrus in crossbred cows
• Repeat insemination
• GnRH analogue
• Non infectious repeat breeding crossbred cows
• Gonadotropin releasing hormone
• Antioxidant enzymes
• Stress hormone
• Pregnant Crossbred cows
• Peripartum period
• Haematological parameters of crossbred cows
• Haematological parameters
• Significantly increased
• Milk yield
• Milk composition
• Economics in crossbred HF cows
• Supplementation on milk yield
• Metabolic profile
• Jersey crossbred cows
• Holstein Friesian crossbred
• Serum metabolic profile
• During early lactation
• Bacterial isolates
• Cattle vagina
• Estrus cycle
• Endometritic and pregnant crossbred cows
• Total mixed ration
• Concentrate ratio
• Residual feed intake
• High yielding crossbred cows
• Rumen protected choline
• Body weight changes
• Crossbred dairy cows
• Nutrient intake
• Feed additives
• Feed efficiency
• Lactating crossbred cows
• Metabolic parameters
• Dairy cows
• Repeat breeding crossbred dairy cows
• Influence of metabolic parameters
• Body condition score
• Bacterial association
• In vitro antimicrobials susceptibility
• Subclinical mastitis
• Bacteria in subclinical mastitis affected cows
• Post partum estrus
• Lactating sahiwal crossbred cows
• Herbal feed supplementation shatavari
• Asparagus racemosus
• Holstein friesian cross
• Ocular and periocular tumors
• HF crossbred cows
• Lower eyelid
• Revealed squamous cell carcinoma of eye
• Biochemical profile
• Milk production
• Lactation in indigenous
• Milk production during different stages
• Cholesterol level
• Chemical parameters of ghee
• Phagocytic activity
• Phagocytic activity of blood
• Milk neutrophils
• Crossbred cows during Peripartum period
• Aerobic bacteria
• Antibiotic sensitivity testing
• Multiple drug resistance
• Organized dairy farm
• Assessment of mineral status
• Mineral status
• Peri partum period
• Analyzed for mineral parameters
• Subclinical endometritis
• Day’s postpartum
• Postpartum subclinical endometritis
• Puerperal period
• Endometrial cytology
• White side test
• Association with fertility
• Probiotics on milk yield
• Production economics
• Endometrial tissue
• Normally calved postpartum dairy cows
• Immunohistochemistry study
• Control cows
• β carotene
• Crossbred cows and infertile
• Infertile crossbred cattle
• Beta carotene incorporated mineral vitamin premix
• Resultant monetary loss