Perspective Volume 7 Issue 1
Department of Animal Sciences, University of Zanjan, Iran
Correspondence: Akbar Nikkhah, Department of Animal Sciences, Faculty of Agricultural Sciences University of Zanjan, Iran
Received: July 21, 2017 | Published: September 21, 2017
Citation: Nikkhah A. Dry and periparturient cow adaptation to optimized starch assimilation. J Nutr Health Food Eng. 2017;7(1):228. DOI: 10.15406/jnhfe.2017.07.00229
This article describes how proper adaptation to optimized starch assimilation during dry period and through periparturient phase can improve dairy cow production and health. Feeding blends of differently processed grains is a viable strategy. Feeding different grains (e.g., corn and barley) with both soft and hard endosperms is another helpful strategy. Well-adapted rumen and post-rumen conditions to adequate starch feeding is a must for healthy and persistent lactation.
Keywords: starch, dry cow, assimilation, processing
The objective of this article was to describe how proper adaptation to starch assimilation during dry period and periparturient phase can improve production and health in dairy cows. Starch is a major component in dairy cow rations that requires optimization in both inclusion rate and processing.1–4 Although not always wise, it is a common practice to feed up to 35-40% cereal grains in dairy diets (dry matter basis). This is very risky when highly fermentable grains such as barley and wheat are fed. But, it is not as risky when corn and sorghum are fed because these grains possess harder endosperm (comparing barley and wheat) that is fermented much less rapidly in the rumen.5–8
Feeding a combination of soft (e.g., barley and wheat) and hard (e.g., corn and sorghum) grains can improve rumen fermentation and prevent sub acute rumen acidosis (SARA). Implementing this strategy during dry period and especially through periparturient phase (i.e., 3weeks before and after calving) is very critical. Feeding differently processed grains of mainly ground and dry and steam-rolled grains would be a thoughtful practice that would support healthy rumen fermentation. Rumen microbes require different sources of differently processed starches to stay safe and sound.
To prevent obesity, cows must receive much long forage alongside starchy grains during the dry period. Some farmers greatly limit grain feeding to dairy cows just not to over feed them and indeed to not cause obesity. But, this strategy must be revisited. When and if more than adequate forage fibers are fed, only moderate reductions in grain feeding would suffice. It must be noted that cows should receive adequate amount of starchy grains to remain adapted and perform well after calving when they usually receive high rates of grains in their lactation diet.
Adding slowly degradable grains such as sorghum to dry and periparturient rations can ensure that rumen fermentation stays stable enough with reduced risk from SARA. Forage and concentrate may be fed separately to promote the rumen adaptation to optimal starch assimilation during dry and periparturient periods.
This article discussed optimal starch feeding and processing strategies for dry and periparturient dairy cows. This adaptation was for more effective starch assimilation during lactation for superior productivity and health.
None.
The author declares no conflict of interest.
©2017 Nikkhah. This is an open access article distributed under the terms of the, which permits unrestricted use, distribution, and build upon your work non-commercially.