Effect of niacin supplementation on Holstein cows during the transition period (review)

Mahdi Mpkhtarian¹

1) MSc in Animal Nutrition from Zanjan University of Agriculture

IOI Code : XBHF-EAABF
Publication : 4th International Conference on Applied Researches in Science & Engineering - Vrije Universiteit Brussel(4carse.com)
Abstract :
    When cows received niacin, cows had the lowest DMI. Eating niacin alone or in combination with heated or unheated soybean meal had no effect on DMI. Unsaturated fat and niacin additive to cows with lactation days of close to 53 days had no effect on DMI treatment. Adding different levels of niacin per cow had no significant effect on milk yield. However, in treated cows, there was a tendency for milk to increase. Niacin-protected cows had higher milk yield (P <0.01) in multiparous cows in early lactation than unicellular cows. Adding different levels of niacin per cow per day had no effect on BW, body weight and BCS. To show the anti-lipolytic properties of niacin, a study was conducted on the effect of niacin additive with or without fat supplemented with dietary treatments including low-fat, low-fat with niacin and high-fat, high-fat with niacin, a significant increase in blood glucose levels. Multiple cows fed with niacin supplementation in early lactation were found to have no effect on plasma NEFA and BHBA concentrations, which may have no effect on lipolysis, or may occur in the liver from early to late gestation. To make fat reserves. In another study, insulin tended to increase in diets supplemented with niacin, which supports the theory that niacin increases milk intake in a way that makes glucose available for milk synthesis in the mammary glands. The potent anti-lipolytic effect is another highly desirable feature of niacin supplementation. High-yielding cows often mobilize fat reserves in a negative energy balance that greatly impair the liver s ability to metabolize fat, leading to NEFAS concentrations, BHBA release and ketosis begin. In a Niacin study from 17 days before calving to 15 weeks postpartum, no effect on plasma BHBA treatment was observed. Two studies were formulated 4 to 43 weeks of lactation in multiparous cows with 12 grams of niacin daily per cow, liquid fat, or both, and the rations were formulated to maximize niacin s chances of increasing RUP-free microbial protein synthesis. There was no significant difference in the effects of treatments on plasma NEFA or BHBA plasma

Keywords : niacin dry matter intake milk production triglyceride transition period