Effect of yeast supplementation on health, performance and rumen fermentation in beef bulls∗

Abstract

The effect of 0, 6 or 60 g yeast (Saccharomyces cerevisiae) daily on health and performance was investigated in 90 double-muscled and 48 non-double-muscled Belgian White-blue bulls during 60 and 51 days, respectively, upon arrival at the experimental farm. The yeast was incorporated in the concentrate, which was fed at 2 kg d-1 during the first ten days and at 2.5 kg d-1 afterwards. Besides, maize silage was fed up to 8 kg d-1, while grass hay was offered ad libitum. Feed intake, growth rate and number of sick animals were not affected by the yeast addition. Morbid animals required a similar number of days with antibiotic therapy for each yeast level within each beef strain. Rumen samples taken from 6 non-double-muscled bulls in the last but one week showed a decreased concentration of volatile fatty acids when 6 g yeast was fed daily. Except butyric acid concentration, rumen fermentation parameters were not altered. Yeast supplementation during an adaptation period after purchase did not affect health status and growth performance.

Performance, carcass characteristics and gain cost of feedlot cattle fed a high level of concentrate and different feed additives

“…However, no differences regarding average daily weight gain were detected in the animals that received monensin sodium and polyclonal antibody preparation. Several authors report that they had not found an explanation for the increase of weight gain of cattle when provided with diets supplemented with yeast (Malcolm & Kiesling, 1990;Mir & Mir, 1994;Fiems et al, 1995;Kung et al, 1997;Doreau & Jouany, 1998) (Table 3). Fereli et al (2010) reported that the use of Saccharomyces cerevisiae in high-concentrate diets for cattle increases the production of microbial mass and promotes a greater flow of bacterial protein available to the animal when compared with the use of monensin sodium which increases the ruminal digestibility and total digestibility of crude protein in comparison with the use of Saccharomyces cerevisiae; this digestibility increase may contribute to the weight gain of animals that were fed monensin sodium.…”

The Growth Factor Myostatin, a Key Regulator in Skeletal Muscle Growth and Homeostasis

“…1). The Belgian Blue, for example, comprises about 45% of the total cattle population in Belgium and is of enormous economical significance [1,8]. The molecular and genetic basis of the phenomenon of ªdoublemuscledº animals remained completely mysterious for a long time.…”

Einfluss verschiedener Probiotika (Bacillus cereus u. Saccharomyces cerevisiae) auf den in sacco Abbau und die Verdaulichkeit bei Schafen sowie die Mast- und Schlachtleistung von Jungbullen

“…Untersuchungsergebnisse von KAMALAMMA et al (1996), HADJIPANAYIOTOU et al (1997, AVENDAÑO et al (1995) und PLATA et al (1994 ADAMS et al, 1981;ADAMS et al, 1995;AVENDAÑO et al, 1995;CABRERA et al,2000;DANN et al, 2000;EDWARDS et al, 1990;HUGES, 1987;MIR u. MIR, 1994;MUTSVANGWA et al, 1992;PIVA et al, 1993;PLATA et al, 1994;PULLAR et al, 1999;ROBINSON, 1997;ROBINSON u. GARET, 1999;SODER u. HOLDEN, 1999 Trockensubstanzaufnahme ≈ Kühe, Bullen, Schafe ARAMBEL u. BIRKELO u. BERG, 1994;COLE et al, 1992;FIEMS et al, 1995;HINMAN et al, 1998;KAMALAMMA et al,1996;KEMALYAN et al, 1996;PARRA u. DICOSTANZO, 1992;SOMMART et al, 1993;WILLIAMS et al, 1987;ZINN et al, 1999Trockensubstanzaufnahme ↓ Bullen, Kü-he, Kälber, Schafe CHIQUETTE 1995HARRIS et al, 1992;QUIGLEY et al, 1992;WOHLT et al, 1991;YOON u. STERN, 1996 Lebendmassezunahme ↑ Junge Bullen, Kälber ADAMS et al, 1981;ALONZO et al, 1993;DRENNAN 1990;HINMAN et al, 1998;HUGES, 1987;…”

“…Kühe, Bullen ADAMS et al, 1981;DAWSON et al, 1990;EL HASSAN et al, 1992;ERASMUS et al, 1992;FIEMS et al, 1995;KAMPF et al, 1997;MIRANDA et al, 1996;LODGE et al, 1996; MALCOLM u. KIESLING, 1990;MATHIEU et al, 1996;MUTSVANGWA et al, 1992;PUTNAM et al, 1997;QUIGLEY et al, 1992; YOON u. STERN, 1996;OLSON et al, 1994 PH-Wert ↓ Schafe, Bullen, Kühe ARCOS-GARCIA et al, 2000EDWARDS et al, 1990;HARRISON et al, 1988;PIVA et al, 1993; ZINN et al, 1999 NH 3 -N ↑ Schafe, Kühe, Kälber ARCOS-GARCIA et al, 2000;FIEMS et al, 1993;FONDEVILLA et al, 1990;JOUANY et al, 1998;MATHIEU et al, 1996;MIRANDA et al, 1996;PUTNAM et al, 1997;QUIGLEY et al, 1992;SOMMART et al, 1993;ROA et al, 1997 ADAMS et al, 1981;ERASMUS et al, 1992;HARRISON et al, 1988;EL HASSAN et al, 1992;KUMAR et al, 1994;MUTSVANGWA et al, 1992;NEWBOLD et al, 1995;PIVA et al, 1993 FFS 1) ↑ Kühe, Schafe, Bullen, Büffel Kälber AHRENS et al, 1993;ARCOS-GARCIA et al, 2000;DAWSON et al, 1990;EDWARDS et al, 1990;HARRISON et al, 1988;…”