Skip to main content

Effects of Heat Stress on Milk Production in Cattle

by Yadav Sharma Bajagai


Reduction in milk production is one of the major economic impacts of climatic stress in dairy cattle. Decrease in milk yield due to heat stress is more prominent in Holstein than in Jersey cattle [1]. Decreased synthesis of hepatic glucose and lower non esterified fatty acid (NEFA) level in blood during heat stress [2, 3, 4] causes reduced glucose supply to the mammary glands resulting low lactose synthesis which in turn ensues low milk yield [5]. Reduction in milk yield is further intensified by decrease in feed consumption by the animals to compensate high environmental temperature [5, 6].


Reduced milk production due to heat stress is attributable only partly to decrease in feed intake [7]. Actually 35% of reduced milk production is due to decreased feed intake while remaining 65% is attributable to direct effect of heat stress [7]. Other factors resulting reduced milk production during heat stress are decreased nutrient absorption, effect in rumen function and hormonal status and increased maintenance requirement resulting reduced net energy supply for production [8, 9].

Milk production in cow has been found to be reduced when ambient temperature and temperature humidity index increases above critical threshold [10, 11]. Heat stress during 60 days prepartum period negatively affects postpartum milk production [12] and cows parturated during summer produce less milk as compared to other season [17]. Similarly, quantity of milk protein and solid not fat (SNF) have been found to be reduced during heat stress in dairy cattle [7, 13, 14]. Mallonee [15] reported 20% less milk yield in cattle kept in sun than milk yield in cattle kept in shed. Similarly, Roman-Ponce [16] found 10.7% higher milk production in cows kept in shed than that in cows kept in sun during hot weather.

Comments

  1. The Holstein and Jersey dairy breeds have emerged to be the top two breeds in the world and their popularity is primarily due to the two breeds having the ability to convert large quantities of forage-based diets into milk and milk components. As mentioned by Underwood JP ( Illini Dairy Net) made a comparison between these two major breeds for their performance in the USA.

    For the year 1999, registered Holsteins averaged on a 305-day M.E. basis, 24,291 pounds milk, 3.66 percent milk fat, 888 pounds milk fat, 3.15 percent milk protein, and 765 pounds milk protein.

    Registered Jerseys averaged 16,997 pounds milk, 4.57 percent milk fat, 776 pounds milk fat, 3.72 percent milk protein, and 633 pounds milk protein.

    Comparative features of the two Breeds (something that should be considered in formulating dairy policy with regards to breed selection and promotion in countries like Nepal):

    Holsteins are more profitable than Jerseys under fluid milk markets and in the sale of market cows and bull calves.

    Jerseys are competitive with Holsteins under component milk markets.

    Holsteins and Jerseys have similar feed efficiency.

    Jerseys are superior in reproductive efficiency.**

    **Reproduction Efficiency and performance under poor management should be given huge emphasis in conditions prone to climatic and other stresses.
    (Text available at :http://www.livestocktrail.illinois.edu/dairynet/paperdisplay.cfm?contentid=351)

    ReplyDelete
    Replies
    1. Thank you very much for sharing such an important information.

      Delete
  2. i'd be grateful if you please tell me the detailed feeding chart for milking jersey cow in nepal..

    ReplyDelete
  3. Impressive web site, Distinguished feedback that I can tackle. Im moving forward and may apply to my current job as a pet sitter, which is very enjoyable, but I need to additional expand. Regards site link.

    ReplyDelete
  4. It is shrewd to introduce both heating and cooling frameworks, in light of the fact that a solitary framework performs the two occupations. Warmtepomp

    ReplyDelete
  5. Excellent article. Very interesting to read. I really love to read such a nice article. Thanks! keep rocking. organic ghee benefits

    ReplyDelete
  6. Agriculture is the process of mainly producing fiber and food with the help of cultivating certain plants and raising livestock which are primarily domesticated animals. Sometimes the practice of agriculture is also referred to as "farming" although this term is mostly used in the context of plant agriculture only. cérealiculture

    ReplyDelete
  7. Fresh produce, milk, eggs, and more. Or 1000 other products. Delivered to your door whenever you want – 2/3 working days. Online Supermarket Shopping

    ReplyDelete
  8. With its varied allied sectors, Deutz Parts Catalog is undeniably the largest source of revenue for millions across the length and breadth of India. Contributing a momentous figure to the Gross Domestic Product (GDP) of the nation, sustainable agriculture that offers rural occupation and environmentally sustainable expertise, agriculture is essential for a comprehensive development of a nation.

    ReplyDelete
  9. This is one of the serious types. It's one thing to be stressed out, but something is off when a person gets worked out about almost everything. Even things that is not stressful. So be it their wedding day or their nothing day, there is something they will stress about. discount cbd products

    ReplyDelete
  10. At the point when persistent stress poses a potential threat, you will require some endurance tips to get past it. how to smoke cbd oil

    ReplyDelete
  11. Thx for your post. I’d like to write my opinion that the expense of car insurance varies from one insurance plan to another, due to the fact there are so many different facets which contribute to the overall cost. Such as, the model and make of the auto will have a massive bearing on the price. A reliable outdated family motor vehicle will have an inexpensive premium compared to a flashy sports vehicle. Infra panel

    ReplyDelete
  12. Great article Lot's of information to Read...Great Man Keep Posting and update to People..Thanks products for pain

    ReplyDelete
  13. Precision agriculture is the practice of growing crops using highly advanced technology, such as geospatial techniques and sensors. This type of agriculture has been practiced for a long time now. It is usually done using GPS technology that utilizes images from satellites to study variations in the state of the crops and to study the condition of the soil. Mandi Bhav Today

    ReplyDelete
  14. I am always searching online for articles that can help me. There is obviously a lot to know about this. I think you made some good points in Features also. Keep working, great job ! vape attic olathe

    ReplyDelete
  15. While the teen years can be exceptionally stressful, some run of the mill stressors include: stress from school, social tension, and burdensome sentiments - for instance, not having a place, self-hurt and other broken adapting procedures. residential facilities for troubled youth

    ReplyDelete
  16. that eliminate buildup are essential. At the point when left untreated, buildup can leave behind revolting stains on an assortment of your boat's surfaces.Boat care products exceptionally made to battle mold will eliminate. targonca szállítás Debrecen Europa-Road Kft.

    ReplyDelete
  17. Outfitting yourself with the right products will help you clean your boat all the more proficiently. You'll have the option to do speedy cleaning meetings when each sailing trip rather than long ones that require hours to finish. Europa-Road targonca szállítás Debrecen

    ReplyDelete
  18. If you are looking for DNA Testing Services. Visit DNA Bio Services to know more about our Services.

    ReplyDelete

  19. HELLO GET OUT OF FINANCIAL MESS WITH THE HELP OF drbenjaminfinance@gmail.com

    I have been in financial mess for the past months, I’m a single mum with kids to look after. My name is REBECCA MICHAELSON, and am from Ridley Park, Pennsylvania. A couple of weeks ago My friend visited me and along our discussion she told me about DR BENJAMIN OWEN FINANCE of drbenjaminfinance@gmail.com that he can help me out of my financial situation, I never believed cause I have spend so much money on different loan lenders who did nothing other than running away with my money. She advised, I gave it a try because she and some of her colleagues were rescued too by this Godsent lender with loans to revive their dying businesses and paying off bills. so I mailed him and explain all about my financial situation and therefore took me through the loan process which was very brief and easy. After that my loan application worth $278,000.00USD was granted, all i did was to follow the processing and be cooperative and today I am a proud business owner sharing the testimony of God-sent Lender. You can as well reach him through the Company Email drbenjaminfinance@gmail.com

    THANK YOU VERY MUCH

    ReplyDelete
  20. Valuable information! Looking forward to seeing your notes posted <a href="https://qurist.in”>Hemp oil buy India</a>

    ReplyDelete
  21. I have to thank you for the efforts you have put in writing this blog. I’m hoping to view the same high-grade blog posts by you later on as well. In truth, your creative writing abilities have motivated me.
    shrishuddhiaddictioncentre@gmail.com

    ReplyDelete
  22. purchase youtube views You have completed and uploaded your new video creation to YouTube and now you are looking to generate traffic to it. Whether or not your creation lends itself to easy growth or not, you have two basic approaches of promoting it gain views: Paying for the traffic and organically promoting it. This article discusses strategies you can employ using both pay for traffic and organic traffic creation techniques.

    ReplyDelete
  23. Reliability, coverage and confidentiality of transmitted information along with the institution's capacity in handling the equipment, play an important role. mcalister's deli diabetic friendly

    ReplyDelete
  24. Heating and cooling duct cleaning is one of the most important services that you can get for your business. With the right ducts, your heating and cooling system will last longer. heating duct replacement melbourne

    ReplyDelete
  25. While transferring your video, try to have a viable method for allowing individuals to return to your site. New York City

    ReplyDelete
  26. It is typically worn as a foundation, for fashion and for fun. Waist trainer latex will provide you an immediate transformation to a temporary, smaller waist and it will create a shape that is eye-catching. waist trainer

    ReplyDelete
  27. In the event that each room air conditioner sold in the U.S. were Energy Star qualified, we could forestall 1.2 billion pounds of ozone depleting substance emanations to place that into point of view that is identical to the discharges from 100,000 vehicles. cold

    ReplyDelete
  28. This article is very informational. Genuinely it is good and instructive information. It is very excellent. Thank you so much for sharing with us. 43 inch led tv lowest price

    ReplyDelete
  29. "Thanks to the cooling system, my home gym is a pleasant place to exercise even in the peak of summer." air conditioning

    ReplyDelete

Post a Comment

Popular posts from this blog

Food Safety Regulation in Nepal

by Yadav Sharma Bajagai 1          Introduction   Being member of different international organizations, Nepal has many food safety related obligations to comply with rules and regulations of those organizations. Food safety related issues started to become matter of increased concern and one of the priority areas of the government after the country has become member of the world trade organization (WTO) in 2004. Being a developing country, food chains are generally long in developing countries like Nepal as compared to those in developed countries due to poor infrastructure which makes the food more vulnerable to be contaminated with harmful agents (microorganism and chemicals). In addition, infrastructures related to technical regulation, conformity assessment and safety of food are still in developing phase which requires more focus and investment for better functioning. Similarly, Inspections and regulation of food related business are challenging and difficult due

Basic Concepts of Food Security: Definition, Dimensions and Integrated Phase Classification

by Yadav Sharma Bajagai "Food Security" is one of major elements of development and poverty alleviation and has been the goal of many international and national public organizations. The issue is so important that according to the state of food insecurity in the world 2012 published by FAO around 870 million people (out of which 852 million from developing countries) are estimated to have been undernourished in the period 2010-12. Although the phrase "Food Security" is being used widely, the definition and concept of food security is elusive and being evolved and expanded over time.

How to make balanced and healthy diets for children using basic food groups

By Maria Prihtamala Omega The food groups consist of fruits, vegetables, protein, grains and dairy that have been used as a basic guidance to eat balanced and healthy meals. Firstly, vegetables have essential nutrients that are needed to grow and stay healthy. For example, dark green vegetables like broccoli, spinach, and collard greens have calcium which the bodies need to grow strong bones. Carrots, sweet potatoes, bell peppers, squash, and beets have vitamin A which helps to protect and heal the bodies. Beans are also part of vegetable groups. They are good source of protein which is needed to build strong muscles including the heart. Humans should eat different vegetables in order to get different nutrients. Children should get about one-and-a-half cups of vegetables a day, including a small salad at lunch and vegetables at dinner. Secondly, fruit is also an important part of a balanced meal. For instance, fresh apples, oranges, bananas, and o