Abstract
This study examines the effect of the physically effective Neutral Detergent Fiber (peNDF) value of roughage on milk composition and milk yield. The physically effective NDF varies depending on the particle length of the roughage and the amount of structural and non-structural carbohydrates in the diet. The quality, quantity, and particle length of the roughage are crucial for a healthy rumen. The longer the particle length of the roughage is, the more the cow ruminates and the more saliva it produces. The produced saliva is used to balance the rumen pH. It is aimed to protect rumen and animal health, improve milk and fertility, and make more efficient animal husbandry through the optimum preparation of physically effective NDF levels in the ration. The optimum NDF in the ration realizes the balance of energy, protein, and fiber required by cows in the early lactation period and makes it possible to maximize the microbial yield and protect the rumen's health. In this period, the lactation peak is maintained by promoting dry matter intake. The current study showed that the effect of peNDF on milk composition properties and somatic cell number significantly differed between farms (P
Highlights
Total Mixed Ration (TMR) is used in feeding dairy cattle in the world and our country
This study aims to examines the effect of the physically effective Neutral Detergent Fiber value of the roughage on milk composition and milk yield
Providing the balance of energy, protein, and fiber required by cows in the early lactation period, maximizing the microbial yield and protecting the rumen health are possible with the optimum Neutral Detergent Fiber (NDF) in the ration
Summary
Total Mixed Ration (TMR) is used in feeding dairy cattle in the world and our country. This system is the most suitable feeding system in terms of milk yield, fertility, and feeding costs. TMR is a feeding system that roughage and concentrate feed are mixed in the ration prepared according to the nutritional requirements of animals and presented as ad libitum. Carbohydrates are divided into two as structural and non-structural carbohydrates. The structural carbohydrates found in the cell wall are pectin, β-glucan, galactosides, arabinoxylan (pentosans), hemicellulose, cellulose, and lignin. Non-structural carbohydrates in the cell are organic acids, starch, and sugars. Carbohydrates are produced by photosynthesis and stored in plants.
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