Optimizing Rumen and Milk Quality with Top Dress Hay in Dairy Cows
Department of Animal Sciences, University of Zanjan, Iran
Submission: October 06, 2016; Published: November 05, 2016
*Corresponding author: Akbar Nikkhah, Chief Highly Distinguished Professor, Department of Animal Sciences, Faculty of Agricultural Sciences, University of Zanjan, Foremost Principal Highly Distinguished Elite-Generating Scientist, National Elite Foundation, Iran,
E-mail: [email protected]
How to cite this article: Akbar N. Optimizing Rumen and Milk Quality with Top Dress Hay in Dairy Cows. Nutri Food Sci Int J. 2016; 1(4): 555566. DOI: 10.19080/NFSIJ.2016.01.555566
It is common knowledge that the Aedes mosquitoes are the major vectors for the Dengue Fever (DF) virus and the Zika virus and the Culex mosquitoes are the major vectors for West Nile Virus (WNV). The Culex mosquito is a common mosquito in the United States of America (USA), as it is elsewhere in the world. The Zika virus is carried by the Aedes mosquitoes and possibly by the Culex mosquitoes. In this work, it is reasoned that all the mosquitoes mentioned could be capable of being vectors of these major viral diseases of concern. It is also known that the infected female Aedes mosquito can give rise to baby mosquitoes infected with the DF virus. Because of their similarity inlife-cycles, it is quite possible that the Culex, Aedes, and Anopheles mosquitoes can all spread DF, Zika and WNV. Thus, it is likely that DF, Zika and WNV can be spread to all 50 states of the USA. The spraying of insecticides over the rice fields of California may be unnecessary. Fishes which eat mosquito larvae should be preferred instead as a mitigation agent against the mosquitoes. Abstinence from meat could be considered a possible method to prevent DF from progressing to Dengue Hemorrhagic Fever (DHF)..
The rapid growth of ruminant husbandry in many regions has caused many health problems that largely contribute to devastating economy losses. High levels of milk and beef production have been realized by feeding overly high levels of starch and fat. On the other hand, fertility and longevity have dramatically declined. Preparing total mixed rations to dilute the energy content of super diets usually fed to high-merit ruminants has been introduced as a strategy to reduce risks from rumen over-fermentation and consequent health and immune problems [1-4]. However, such a presumed efficacy has been under serious questions [5-8]. The real initial problem is not how to prepare or deliver diets to high-producing ruminants, but it is rather.
how to formulate diets that maintain reasonable rumen and host health while wisely and not overly improving production properties [9-12]. Because of feeding too much concentrate and starch, mixing forage and concentrate may significantly reduce forage fibre effectiveness within a suboptimal subacidotic rumen environment [1-3]. Overfeeding starch and fat and then mixing them with forages hoping to eradicate problems is just self-cheating.
That could be a reason why component feeding proves more effective than total mixed ration delivery under certain management systems [1,2]. Top-dress delivery of adequately effective forage choices helps ensure that metabolically pressured ruminants receive reasonable amount of physically effective fibre at least once daily. This separate forage provision acts as an appetizer while providing the rumen with sufficient effective fibres to stimulate ruminating, chewing, and timely naturalized rumen conditions. As a consequence, overall daily intake can be improved, which is of utmost importance in early postpartum dairy cows suffering from negative nutrient balances.
Wet and ensiled forages are better suited for total mixed rations preparation, as they embrace small concentrate particles and improve meal and bout uniformity. For top-dress presentation, however, dry forages would be more appropriate. Top-dress alfalfa and mixed legume-grass hays would be among optimal choices. Notable, the amount of top-dress forage offered must not be too much of a good thing to not increase nutrient
imbalance and not reduce nutrient and feed efficiency.
This perspective article discussed the necessity and efficacy
of top-dress forage provision in modern dairy and beef farming
for the healthy management of ruminant husbandry and human
food production. Top-dress and delicate provision of adequately
long and physically effective forages is a workable strategy
to improve food intake and rumen conditions. This on-farm
approach works towards sustainable ruminant husbandry and
food safety and security. But, too much of a good thing hurts.
Thanks to the Ministry of Science Research and Technology,
National Elite Foundation, and University of Zanjan for
supporting the author’s global initiatives and programs of
optimizing science edification in the new millennium.