Investigating the Impact of Quebracho Tannins Supplementation on Productive and Reproductive Efficiency of Dairy Cows

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Investigating the Impact of Quebracho Tannins Supplementation on Productive and Reproductive Efficiency of Dairy Cows

January 2, 2021 AGRICULTURE 0

This research was conducted to investigate the impact on dry matter intake (DMI), milk yield and composition, blood metabolites and reproductive efficiency for 12 weeks of supplementing two doses of que-bracho tannins (QT; 100 or 200 g/cow/d; QT100 or QT200) pre- and post-parturition to thirty Holstein dairy cows. Due to QT in the transition cycle of dairy cows, no major changes in DMI were observed. Compared to untreated dairy cows, QT supplementation at either stage decreased milk yield (P < 0.004), fat-corrected milk (FCM) and feed quality (FE; P < 0.016). There was no major effect of QT supplementation on milk fat, lactose percentage and protein and solid non-fat (SNF) yields, while the protein percentage of treated cows increased substantially compared to control cows. Treatment time has had a substantial influence on the composition of the milk. On milk fat and protein percentages, the only time for treatment experiences was found. The total number of ovarian follicles, number of large follicles, diameter of the largest follicle, number of tiny follicles, number and diameter of the corpus luteum, and progesterone concentration appeared to decrease (P > 0.05) with QT supplementation. Compared to monitor cows, the addition of QT increased open days and the number of facilities per conception, which subsequently decreased the conception rate. In contrast with their values in control cows, QT100 decreased (P < 0.05) serum total protein, globulin, glucose and triglyceride concentrations. The addition of commercial QT to dairy cows during their transformation time has therefore had a negative effect on production and reproductive efficiency. For specific judgement on the effects of commercial QT on ruminant diets, further studies using different proportions of RDP and RUP are warranted.

Author(s) Details

Marwa F. A. Attia
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.

Adel N. M. Nour El-Din
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.

Samir Z. El-Zarkouny
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt and Department of Arid Land Agriculture, Faculty of Meteorology, Environment and Arid Land Agriculture, Jeddah, Saudi Arabia.

Hani M. El-Zaiat
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.

Moustafa M. Zeitoun
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt and Department of Animal Production and Breeding, College of Agriculture and Veterinary Medicine, Qassim University, Qassim, Saudi Arabia.

Sobhy M. A. Sallam
Department of Animal and Fish Production, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.

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