Effect of Temperature Humidity Index on Semen Quality of Bovine Bull

Artificial insemination (AI) of cattle in India is expanding day by day to improve the production potential and genetic merit of our indigenous cows, superior germplasm have been introduced all over India. The success and efficiency of the programme primarily depends on the successful selection of fertile bulls. It is well known that the superior sire can only produce best quality semen. There are many factors that may affect the effectiveness of AI in field condition. The semen characteristics are the major factors that influence conception in cattle and therefore, a determinant of efficiency of reproduction. Among various factors involved, quality of semen is of important consideration. The bulls used for AI at Pantnagar are mostly crossbred and pure Sahiwal, The adaptability and efficiency of such cross-bred bulls and pure Sahiwal in hot and humid climate as prevailing in Pantnagar are not known. A thorough knowledge of environment related variations particularly temperature and humidity in semen characteristics of these breeds is very important.

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