
	Asian Journal of Animal and Veterinary Advances
	Year: 2011 \| Volume: 6 \| Issue: 10 \| Page No.: 978-991 DOI: 10.3923/ajava.2011.978.991

Evaluating Methionine Hydroxyl Manganese and Manganese Sulfate Sources for Dairy Cows During Peak-and Mid-lactation Stage

Fen Wang, Libin Wang, Shengli Li, Yanming Wang, Xin Jin and Hong Cao

Abstract: Thirty Holstein cows (10 cows per treatment) were blocked according to calving date, milk yield and party and randomly assigned to a study to determine the effect of manganese (Mn) sources on lactating cows. Treatments were (1) all Mn (14 ppm) supplied by sulfate (S), (2) Mn sulfate (MnSO₄) and methionine hydroxyl manganese (Mn-(HMTBA)₂) contributed half of the dietary Mn (SM) or (3) all Mn supplied by (Mn-(HMTBA)₂) (M). The average 4% Fat-corrected Milk (FCM) yield and fat yield of cows supplied with M dietary were significantly higher than the cows fed with SM and the S (p<0.05). The average lactose rate of SM was significantly lower than S and M (p<0.05). Numerically, the apparent digestibility of organic matter, crude protein, crude fat and acid detergent fiber of S were the lowest but no significant difference were found between groups (p>0.05). Significant increases was observed for serum High-density lipoprotein cholesterol concentration of M compared with S and SM (p<0.05). The average detectable follicle numbers and ovarian score for cows of M was generally lower than cows of SM and S but no significant difference was observed (p>0.10). The present study suggested that replacing a portion of dietary Mn sulfate with Mn-(HMTBA)₂ during the peak-and mid-lactation periods will improve the lipid metabolism and milk fat secretion; however, the follicular development may be hampered.

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How to cite this article:

Fen Wang, Libin Wang, Shengli Li, Yanming Wang, Xin Jin and Hong Cao, 2011. Evaluating Methionine Hydroxyl Manganese and Manganese Sulfate Sources for Dairy Cows During Peak-and Mid-lactation Stage. Asian Journal of Animal and Veterinary Advances, 6: 978-991.

DOI: 10.3923/ajava.2011.978.991

URL: https://scialert.net/abstract/?doi=ajava.2011.978.991

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