THE FEED VALUE OF A BY–PRODUCT OF THREONINE PRODUCTION BY FERMENTATION IN CATTLE FEEDING
Effects of mother liquor (a by-product of threonine production by fermentation) as a potential feed component for cattle were evaluated in an experiment with Holstein-Friesian steers. Experimental animals were surgically equipped with rumen cannula, and two were equipped with duodenum cannula in ord...
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| Veröffentlicht in: | Annals of Faculty Engineering Hunedoara 2021-02, Vol.19 (1), p.153-160 |
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| creator | Tóth, Tamás Tempfli, Károly Zsédely, Eszter Schmidt, János |
| description | Effects of mother liquor (a by-product of threonine production by fermentation) as a potential feed component for cattle were evaluated in an experiment with Holstein-Friesian steers. Experimental animals were surgically equipped with rumen cannula, and two were equipped with duodenum cannula in order to facilitate sample collection. The experiment consisted of a control and three consecutive experimental phases, each lasting 5 days and separated by 10-day pre-feeding periods. Composition of daily ration of control and experimental phases was identical except for the following supplementations in the different experimental phases: 1.0 kg mother liquor, 1.5 kg mother liquor, and 1.5 kg mother liquor with 1.0 kg molasses, respectively. The experimental supplements increased bacterial activity in the rumen resulting in a significant (P |
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Experimental animals were surgically equipped with rumen cannula, and two were equipped with duodenum cannula in order to facilitate sample collection. The experiment consisted of a control and three consecutive experimental phases, each lasting 5 days and separated by 10-day pre-feeding periods. Composition of daily ration of control and experimental phases was identical except for the following supplementations in the different experimental phases: 1.0 kg mother liquor, 1.5 kg mother liquor, and 1.5 kg mother liquor with 1.0 kg molasses, respectively. The experimental supplements increased bacterial activity in the rumen resulting in a significant (P<0.05) increase in total volatile fatty acid production and an improved energy supply. Furthermore, supplementations increased the ammonia (NH3) content of rumen fluid and thus improved N supply for ruminal bacteria. 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Experimental animals were surgically equipped with rumen cannula, and two were equipped with duodenum cannula in order to facilitate sample collection. The experiment consisted of a control and three consecutive experimental phases, each lasting 5 days and separated by 10-day pre-feeding periods. Composition of daily ration of control and experimental phases was identical except for the following supplementations in the different experimental phases: 1.0 kg mother liquor, 1.5 kg mother liquor, and 1.5 kg mother liquor with 1.0 kg molasses, respectively. The experimental supplements increased bacterial activity in the rumen resulting in a significant (P<0.05) increase in total volatile fatty acid production and an improved energy supply. Furthermore, supplementations increased the ammonia (NH3) content of rumen fluid and thus improved N supply for ruminal bacteria. 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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | Amino acids Ammonia Animals Bacteria By products Cannulae Cattle Experiments Fatty acids Feeds Fermentation Liquor Microorganisms Molasses Normal distribution Phases Proteins Small intestine Syrups & sweeteners |
| title | THE FEED VALUE OF A BY–PRODUCT OF THREONINE PRODUCTION BY FERMENTATION IN CATTLE FEEDING |
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