Effect of injection of vitamin C and copper on milk production and composition and body condition score of transition dairy cows under heat stress

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KHODAMORADI S.; FATAHNIA F.; JAFARI H.; Taasoli G.

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Journal: JOURNAL OF RUMINANT RESEARCH Year:2019 | Volume:7 | Issue:3 Page(s): 77-92

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Title

Effect of injection of vitamin C and copper on milk production and composition and body condition score of transition dairy cows under heat stress

Author(s)

KHODAMORADI S. | FATAHNIA F. | JAFARI H. | Taasoli G. | Issue Writer Certificate

Keywords

CopperQ2

Dairy cowQ1

Milk composition and productionQ2

Transition periodQ2

Vitamin CQ1

Abstract

Background and objectives: Transition period is the period between three weeks before and three weeks after parturition which is one of the most critical physiological stage in Dairy cows. Decreasing dry matter intake (DMI) and negative energy balance (NEB) potentially weakens immunity system and increases higher incidence of metabolic and infectious diseases. High temperature in summer results in heat stress which subsequently reduce DMI and changes metabolic reaction in lactating Dairy cows. Use of some vitamins and minerals such as Vitamin C and Copper could reduce negative effects of Transition period and heat stress. The aim of this experiment was to study the effect of injection of Vitamin C and Copper to transition Dairy cows on milk production and composition and body condition score (BCS), DMI in calving day and blood cells in summer season. Materials and methods: Twenty multiparous (second parity, 603. 18 ± 51 kg BW) and twenty multiparous (third and fourth parity, 669. 05 ± 53 kg BW) Holstein cows were used in a completely randomized block design with 2*2 factorial arrangement. Experiment extended from 40 d before expected calving till 90 d after calving. Experimental treatments consisted of control (injection of 7 mL of NaCl % 0. 9), Vitamin C (injection of 25 mg Vitamin C solution/kg body weight), Copper (injection of 75 mg Copper solution/day) and Vitamin C-Copper (simultaneous injection of 25 mg Vitamin C solution/ kg body weight and 75 mg Copper solution/day). Solutions were injected on 20 and 40 d before expected calving, calving day and 20 d after calving. Maximum temperature-humidity index during the experiment was 68. 27-78. 20. Body condition score (BCS) changes, DMI in calving day, milk production and composition and blood cells were determined. Results: Results showed that BCS, DMI in calving day, milk production and composition on d 7, 30, 60 and 90 after calving and cell blood count except of neutrophil count were not influenced by simultaneous injection of Vitamin C and Copper solutions. Blood neutrophil count on d 20 before expected calving did not affect by injection of Vitamin C while as Vitamin C injection enhanced blood neutrophil count on calving day, 10, 20 and 30 d after calving (P < 0. 05). Copper solution injection in compare to lack of injection tended to less changes on BCS form calving day till 30 d after calving (P = 0. 06). Red blood cell counts on calving day in cows receiving Copper solution injection were greater in compare to lack of injection (P < 0. 05). Conclusion: Although, individual injection of Vitamin C and Copper to transition Dairy cows resulted in some changes in blood cell counts but simultaneous injection of Vitamin C and Copper to heat loaded transition Dairy cows had no considerable effect on Milk composition and production of the first 90 d calving.

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APA: Copy

KHODAMORADI, S., FATAHNIA, F., JAFARI, H., & Taasoli, G.. (2019). Effect of injection of vitamin C and copper on milk production and composition and body condition score of transition dairy cows under heat stress. JOURNAL OF RUMINANT RESEARCH, 7(3 ), 77-92. SID. https://sid.ir/paper/244094/en

Vancouver: Copy

KHODAMORADI S., FATAHNIA F., JAFARI H., Taasoli G.. Effect of injection of vitamin C and copper on milk production and composition and body condition score of transition dairy cows under heat stress. JOURNAL OF RUMINANT RESEARCH[Internet]. 2019;7(3 ):77-92. Available from: https://sid.ir/paper/244094/en

IEEE: Copy

S. KHODAMORADI, F. FATAHNIA, H. JAFARI, and G. Taasoli, “Effect of injection of vitamin C and copper on milk production and composition and body condition score of transition dairy cows under heat stress,” JOURNAL OF RUMINANT RESEARCH, vol. 7, no. 3 , pp. 77–92, 2019, [Online]. Available: https://sid.ir/paper/244094/en

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