Effect of dietary inclusion of date seed (Phoenix dactylifera L.) on intake,digestibility, milk production,and milk fatty acid profile of Holstein dairy cows |
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| Authors: | A. Rezaeenia A. A. Naserian R. Valizadeh A. M. Tahmasbi A. Mokhtarpour |
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| Affiliation: | 1.Department of Animal Science, Faculty of Agriculture,Ferdowsi University of Mashhad,Mashhad,Iran;2.Research Center of Special Domestic Animals,University of Zabol,Zabol,Iran |
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| Abstract: | The objective of this experiment was to investigate the influence of ground date seed (GDS) on intake, digestibility, and milk yield and milk fatty acid (FA) composition of lactating Holstein cows. The experimental design was a 4?×?4 replicated Latin square with eight lactating dairy cows with an average milk production of 35.5?±?1.5 kg and 75?±?5 days in milk (DIM). Dairy cows were fed one of the four treatments contained 0, 2, 4, and 6% of diet dry matter (DM) GDS in replacement of wheat bran. All diets contained the same amount of forages (alfalfa hay and corn silage). Dietary treatments had no effect on DM intake (DMI), total tract apparent digestibility, milk yield, and milk composition. Increasing GDS linearly decreased concentration of C13:0 and increased cis-9 C14:1 and trans-11 C18:1 (vaccenic acid) (P?P?=?0.06). Feeding GDS resulted in a linear decrease (P?P?
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