INFLUENCE OF SHORT-TERM FASTING DURING THE LUTEAL PHASE ON OVARIAN FOLLICULAR DIAMETER AND NUMBER, CORPUS LUTEUM SIZE, STEROID AND METABOLIC HORMONES IN HOLSTEIN DAIRY HEIFERS

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PIRESTANI A.; DOROSTKAR SH.

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Journal: Veterinary Research & Biological Products Year:2017 | Volume:30 | Issue:1 (114) Page(s): 100-111

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Title

INFLUENCE OF SHORT-TERM FASTING DURING THE LUTEAL PHASE ON OVARIAN FOLLICULAR DIAMETER AND NUMBER, CORPUS LUTEUM SIZE, STEROID AND METABOLIC HORMONES IN HOLSTEIN DAIRY HEIFERS

Author(s)

PIRESTANI A. | DOROSTKAR SH. | Issue Writer Certificate

Keywords

SHORT-TERM FASTINGQ1

LUTEAL PHASEQ1

STEROID HORMONESQ1

METABOLIC HORMONESQ1

HOLSTEIN HEIFERSQ1

Abstract

The aim of this study was to evaluate the SHORT-TERM FASTING in the LUTEAL PHASE on follicular diameter, the size of corpus luteum (CL), STEROID HORMONES and some METABOLIC HORMONES in Holstein dairy heifers. In this study 60 heifers were allocated randomly to 2 groups, control and treatment, that contained 30 heifers with the same age and weight. After estrous synchronization, heifers entered the LUTEAL PHASE; diet was used in control group based on NRC at one meal, and the treatment group at two meals during 12 days (for SHORT-TERM FASTING during the LUTEAL PHASE). Number and size of follicles were evaluated by ultrasonography at observation of heat, and CL diameter was estimated by ultrasonography as every other day at 30 h after heat. Also, estrogen hormone was measured at follicular phase and progesterone hormone at LUTEAL PHASE as every other day. Two glucose samples were estimated within 5 days during SHORT-TERM FASTING. Also, GH hormone and IGF1 was measured at the end of follicular phase and mid-luteal phase, respectively. Results of study showed that number of follicles, CL diameter on left ovary, and the level of progesterone and IGF1 were significantly different (P<0.05) between the treatment group compare and control. However, glucose was significantly higher (P<0.05) in treatment group in the first sample but wasn’t significantly different in the second sample. Also, AI/pregnancy was higher in the treatment group than control. It was concluded that SHORT-TERM FASTING had an effect on reproduction of heifers.

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APA: Copy

PIRESTANI, A., & DOROSTKAR, SH.. (2017). INFLUENCE OF SHORT-TERM FASTING DURING THE LUTEAL PHASE ON OVARIAN FOLLICULAR DIAMETER AND NUMBER, CORPUS LUTEUM SIZE, STEROID AND METABOLIC HORMONES IN HOLSTEIN DAIRY HEIFERS. VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI), 30(1 (114)), 100-111. SID. https://sid.ir/paper/201011/en

Vancouver: Copy

PIRESTANI A., DOROSTKAR SH.. INFLUENCE OF SHORT-TERM FASTING DURING THE LUTEAL PHASE ON OVARIAN FOLLICULAR DIAMETER AND NUMBER, CORPUS LUTEUM SIZE, STEROID AND METABOLIC HORMONES IN HOLSTEIN DAIRY HEIFERS. VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI)[Internet]. 2017;30(1 (114)):100-111. Available from: https://sid.ir/paper/201011/en

IEEE: Copy

A. PIRESTANI, and SH. DOROSTKAR, “INFLUENCE OF SHORT-TERM FASTING DURING THE LUTEAL PHASE ON OVARIAN FOLLICULAR DIAMETER AND NUMBER, CORPUS LUTEUM SIZE, STEROID AND METABOLIC HORMONES IN HOLSTEIN DAIRY HEIFERS,” VETERINARY RESEARCHES BIOLOGICAL PRODUCTS (PAJOUHESH-VA-SAZANDEGI), vol. 30, no. 1 (114), pp. 100–111, 2017, [Online]. Available: https://sid.ir/paper/201011/en

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