Effect of Adding Choline Chloride in Some Physiological Traits during the summer

Author(s): Eman Qais Mahmoud, Qays Abduljaleel Khalaf, and Mohammed Ahmed Shwayel

Abstract:

This study aimed to show the effect of adding choline chloride to the feed in some physiological traits during the summer in central Iraq. This study was conducted at Al-Khalis cows station in Diyala Governorate during the period from 2022/6/21 to 2022/ 9/21, where 25 Holstein cows between the ages of 3-5 years used, the cows were divided into five treatments, so that treatment T1 represents the control treatment (without adding Choline chloride), while treatments T2 and T3 add choline chloride untreated and treated with formaldehyde, respectively to the concentrated feed with an amount of 35 g /cow /day, T4 and T5 add choline chloride untreated and treated with formaldehyde respectively, with an amount of 70 g /cow /day, The addition of choline chloride treated with formaldehyde in treatment T3 resulted in a significant decrease (P≤0.05) at some times of the experiment in the number of breaths, as the respiratory rate in 5/8/2022 was 48.00 and 47.00 breaths/min in treatments T2 and T3 compared to 51.80 breaths/ min in T1 treatment in the second measurement treatment of the second measurement process, where the addition of choline chloride treated with formaldehyde in the T3 treatment caused a significant decrease (P≤0.05) in the respiratory rate, as it reached 51.60 breaths/min compared with treatment T1 to 49.50 breaths/min. we conclude from the current study that the addition of choline chloride to the concentrated feed with an amount of 35 g /cow /day It has a role in increasing the resistance to heat stress for cows by reducing the number of breathing cows at some times during the summer.

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