Volume 39, April 2016, Pages 12–19
Original Research
- a Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca, México
- b Dairy Science Department, National Research Centre, Giza, Egypt
- c Unidad Académica de Medicina Veterinaria y Zootecnia, Universidad Autónoma de Guerrero, Altamirano, México
- d Department of Animal Sciences, School of Agriculture and Environmental Sciences, Pwani University, Kilifi, Kenya
- Received 5 July 2015, Revised 21 August 2015, Accepted 26 August 2015, Available online 3 September 2015
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Highlights
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- F53 had higher oat straw and total dry matter intake and nutrients' digestibilities.
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- The SC47 resulted in lower blood total protein.
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- F53 had higher asymptotic in vitro fecal gas production.
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- Yeast cultures did not change in vitro fecal pH, CH4, CO2 and dry matter degradability.
Abstract
Sixteen
Quarter Horse mares (body weight: 450–500 kg) were used in a complete
randomized design to determine the effects of feeding horses a high
fiber diet with or without yeast cultures addition on nutrient intake
and digestion, blood chemistry, fecal coliform count, and in vitro fecal
fermentation. The treatments were (1) a basal diet without yeast
cultures addition (control treatment), (2) control diet plus Procreatin 7
at 15 g/mare/d (P7 treatment), (3) control diet plus Biocell F53 at
11 g/mare/d (F53 treatment), or (4) control diet plus Biosaf SC47 at
15 g/mare/d (SC47 treatment). The basal concentrate diet consisted of a
mixture of 50% commercial concentrates and 50% wheat bran fed at
4 kg/mare and offered twice daily at 04:00 and 16:00 hours, while oat
straw was offered ad libitum at 05:00 and 17:00 hours. The mares fed the
F53 had higher (P < .05) oat straw and total nutrient
intakes compared to the control diet. Addition of Biocell F53 and Biosaf
SC47 yeast cultures increased (P < .05) all nutrients' digestibilities. Feeding the yeast cultures resulted in higher crude protein (P = .029), neutral detergent fiber (P = .042), and acid detergent fiber (P = .035) digestibilities compared to the control diet. The SC47 treatment had lower blood total protein (P = .014) than the control treatment. Higher (P
< .05) asymptotic in vitro fecal gas production was obtained with
F53 treatment compared to SC47 treatment without differences between
F53, P7, and control treatments. Increased methane production was
obtained (P < .05) with F53 and SC47 treatments compared to
the control treatment. It can be concluded that daily addition of
Biocell F53 yeast culture at 11 g/mare/d resulted in higher feed intake
and nutrients digestibility without affecting the mare's health.
Keywords
- Coliform;
- Feed utilization;
- Horse;
- Yeast culture
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