The 35th Meeting of Dairy Club (Joint Venture of Alltech and UVAS) was held on Saturday May 24, 2014 at Syndicate Room UVAS.

Following was the agenda of meeting:

A total of 33 participants attended this meeting.

Dr. Muhammad Zafar Ullah Khan opened the house and introduced the speaker and explained the agenda of the meeting.

Dr. Aijaz Ali Channa gave presentation and shared his field experience on Reproductive challenges in dairy animals during hot summer.

Bullet points of his presentation are as follows:

Importance of THI (Temperature Humidity Index):

• THI = takes in to account the combined  effects of air temperature and humidity.
• The cows will show heat stress  signs when THI, reaches 72. In summer it also goes up and heat stress is produced.
• Local Cows and Imported Holstein Frisian
  (Local resist well the stress imported are susceptible to heat stress

Local Buffaloes

• ( Breeding season and Low breeding Seasons)

Heat Stress Causes Effect:

1. Estrus Detection (  Intensity and duration)
2. Fertility (   fertility by impeded development  of mature follicle )
3. Follicle Maturity ( Causes early development of follicular wave)
4. Embryonic development ( Up to Gestation day 40  Embryo is  susceptible to  Elevated cows internal temperature that reduces the  development  of Embryo)

How to fight with heat stress?

• Cow comfort (Shade, water availability, Air movement and Sprinkles)
• Nutrition ( Prevent from decrease DMI , aid buffers to prevent  acidosis,  addition of energy, grain or fat is advantageous during hot weather)
• Reproductive management
• (Heat detection Aids,  Timed A.I Protocols,  GnRH agonist or hCG day 5 Post AI)

Conclusion:

• Cow cooling/ comfort reduces many reproductive problems.
• Management  to improve reproduction by:
• Heat detection Aids, Dietary supplement, TAI and Embryo Transfer

After his presentation, discussion forum was opened farmers from different area shared their views.

At the end Dr. Shahzad Naveed Jadoon summarized the discussion and paid thanks to the worthy speaker and participants for their active participation.

Reproductive challenges hot summer