Effect of Niacin Supplementation and spraying water in milk yield and some of its components for Friesian Cow | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 12, Issue 2, June 2012, Pages 46-53 | ||
| Author | ||
| Emad GH. ALAbbasy | ||
| Abstract | ||
| This study was conducted in AL- Ishaqi Cattle Station , north of Baghdad, and use of 36 multiparous Friesian cows in the in the early season productivity, cows were divided randomly into two main groups are set equal spraying and the control group without spray and Each group was divided into three sub-groups for the period from 1/6/2010 to 31/10/2010 to study the effect of niacin supplementation (0 , 6 , 12 g/day / cow) and spraying water in the middle of the day and at frequent intervals with niacin milk yield and some of its components, the results showed niacin supplementation (12g/cow/day) showed highly significant positive impact )P < 0.01 (on the production of milk daily and monthly 19.30 Kg , 579.05 kg. respectively during the month of July compared to 9.89 kg and 296.76 kg. for the group that did not receive niacin, while these values for cows sprayed with water by mid-day 18.39, 551.96 kg. versus 11.08 and 332.68 kg. for cows that have not sprayed for the same month , as well as the impact of niacin supplementation was significant on components of milk (protein, fat, lactose), most months experiment so that the averages of these ratios reached during the month of August3.45 , 3.22 4.53 % respectively versus3.18 ,2.21 ,3.97 % for the group that did not receive niacin, while the impact of spraying on the same components volatile from month to month between the lack of impact or influence on some of these components . | ||
| Keywords | ||
| Niacin; milk yield; cow | ||
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