Evaluation of the open days and its relationship with hematobiochemical, milk and diet parameters in dairy Holstein cattle

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NOZAD SH.; RAMIN A.GH.; ASRI REZAEI S.

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Journal: Veterinary Research & Biological Products Year:2019 | Volume:32 | Issue:1 (122) Page(s): 63-71

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Title

Evaluation of the open days and its relationship with hematobiochemical, milk and diet parameters in dairy Holstein cattle

Author(s)

NOZAD SH. | RAMIN A.GH. | ASRI REZAEI S. | Issue Writer Certificate

Keywords

Open daysQ1

cattleQ3

bloodQ1

milkQ2

dietQ1

Abstract

Pregnancy Open days (POD) and its relationship with diet, blood and milk parameters was assessed in high producer dairy cows to determine the indices could be affect on pregnancy rate. Following the estruses recording feed, blood and milk samples were prepared monthly up to the date of pregnancy in dairy cows. The visible estruses was from one to 6 and were 21. 3%, 26. 2%, 19. 7%, 18. 1%, 6. 6% and 13. 1%, respectively. The POD were varied from 2 to 11 months and were 11. 5%, 21/3%, 9. 8%, 1. 6%, 11. 5%, 9. 8%, 11. 5%, 3. 3%, 9. 8% and 9. 8%, respectively. The differences among visible estruses and POD were statistically significant. Most cows revealed pregnancy after 3 months of calving. The overall mean for POD were 6 months. Approximately 50% of estruses were latent and have not been recognized. Mean values of urea, protein, calcium, magnesium, and phosphorus in diet, blood and milk during the POD were statistically significant difference among the groups. To realize the relationships between POD and biochemical parameters, POD classified into >120 and <120 days as normal and abnormal groups, respectively. Our results showed that the POD increases by increase in dietary protein andcalcium, blood urea, total protein, and magnesium and milk Mg. Indeed. POD decreases by increase in blood hemoglobin and phosphorus, milk urea, total protein and phosphorus. In conclusion, the POD in the experimental groups were twice as the normal condition. Protein, macro-minerals and urea seem to be more effective in cows POD.

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APA: Copy

NOZAD, SH., RAMIN, A.GH., & ASRI REZAEI, S.. (2019). Evaluation of the open days and its relationship with hematobiochemical, milk and diet parameters in dairy Holstein cattle. VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI), 32(1 (122) ), 63-71. SID. https://sid.ir/paper/200754/en

Vancouver: Copy

NOZAD SH., RAMIN A.GH., ASRI REZAEI S.. Evaluation of the open days and its relationship with hematobiochemical, milk and diet parameters in dairy Holstein cattle. VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI)[Internet]. 2019;32(1 (122) ):63-71. Available from: https://sid.ir/paper/200754/en

IEEE: Copy

SH. NOZAD, A.GH. RAMIN, and S. ASRI REZAEI, “Evaluation of the open days and its relationship with hematobiochemical, milk and diet parameters in dairy Holstein cattle,” VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI), vol. 32, no. 1 (122) , pp. 63–71, 2019, [Online]. Available: https://sid.ir/paper/200754/en

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