Comparative Study on the influence of Three Feed Additives on Methane Production, Rumen Fermentation, and Milk Yield in Dairy Cows
Comparative Study on the influence of Three Feed Additives on Methane Production, Rumen Fermentation, and Milk Yield in Dairy Cows
Soliman Mohammed Soliman
ABSTRACT
Methane emission from ruminants during the fermentation of feed represents a loss of energy and contribution of greenhouse gas. Feed additives are one of the various dietary strategies that have been used to mitigate and reduce methane production in dairy cows. This aimed to determine the effects of three varieties of feed additives (green seaweed, probiotics Saccharomyces cerevisiae or Yucca schidigera) on in-vitro total gas and methane production, in-vivo rumen fermentation parameters, and milk production in dairy cows. Twenty Friesian cows were randomly allocated to four groups (five cows /group). All cows were fed TMR (total mixed rations). The first group was fed TMR without supplementation, groups from 2 to 4 were fed TMR supplemented with one of the feed additives S. cerevisiae, yucca, or green seaweed at a rate of 25 g, 20 g, and 100 g/head/day for respectively.The amount of ammonia, short-chain fatty acid, in-vitro dry matter digestibility (IVDMD), in-vitro organic matter digestibility (IVOMD) were estimated. The results revealed that feed additives enhanced the beneficial processes of the rumen with the reduction in total gas and methane production. All the experimental fed additives had a positive significant effect on the reduction of methane production. Moreover, green seaweed and yucca reduced total gas and methane production significantly more than the probiotic Saccharomyces cerevisiae. Dietary supplements with probiotics or seaweed recorded a significant increase in short-chain fatty acid, in-vitro dry matter digestibility, and in-vitro organic matter digestibility than did other groups. However, dietary supplements with yucca recorded the lowest value in rumen ammonia concentration and protozoal population. Furthermore, the addition of probiotics or green seaweed to the diet has significantly improved milk yield and composition compared with yucca supplementation, as well as decreased the somatic cells count (SCC) as a result of feed additives. Experimental feed additives contributed to enhancing beneficial processes and the reduction of methane production.
Keywords
| Gas and methane production, Green seaweed, Milk yield, Probiotics Saccharomyces cerevisiae, Yucca schidigera
| Gas and methane production, Green seaweed, Milk yield, Probiotics Saccharomyces cerevisiae, Yucca schidigera
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April 2022
Vol. 10, Iss. 4, Pages 712-954
