Effects of Fat, Oxytetracycline, and Stilbestrol on Performance and Hepatic Stores of Carotene and Vitamin A in Steers

Dyer, I. A.; Ensminger, Margaret E.; Blue, Rupert

doi:10.2527/jas1957.164828x

Cited by 9 publications

(3 citation statements)

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“…There are in literature many reports about the effect of such fats on the digesti bility of rationcomponents. So reported Swift et al (1947), Brooks et al (1954), Ward et al (1957), Dyer et al (1957), Brethour et al (1958), Page et al (1958) and Davidson and Woods (1960) about the depressing effect of supplemented fats on the digestibility of the different components of the rations and especially of crude fibre. These results are not in agreement with those of others.…”

Section: Literaturementioning

confidence: 96%

Influence of supplemented animal fats upon digestibility of ration components by ruminants.

Dijkstra¹

1969

NJAS

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In the first trial 3 wethers were given in 5 periods lucerne meal alone or with 5, 10, 15 or 20% steamed destructor fat. Digestibilities were of crude protein 64.2, 63.4, 64.4, 59.3 and 58.3%, of crude fibre 57.7, 58.0, 58.1, 47.7 and 45.6%, of ether extract 52.9, 81.7, 86.8, 89.1 and 90.5% and of lipids extracted by tetrachloromethane 48.4, 64.9, 57.5, 61.4 and 69.6%. Formation of insoluble Ca and Mg soaps may have been the reason for difference in digestibilities of the fats extracted by different methods. In the second trial 3 wethers were given long hay and 2 wethers in 2 periods got the hay plus 10% linseed oil emulsified with an equal volume of water or not emulsified. There was no effect due to emulsifying, but there was a large difference between duplicates when hay plus oil was given although in both instances oil depressed digestibilities; digestibility of crude protein of hay alone was 60.3%, with 10% oil it was 59.2 and 56.8%. Values for crude fibre were 75.9, 69.0 and 60.8%. The third and fourth trials were with 3 wethers given 6 diets in 6 periods. They got 500 g hay alone or with 600 g concentrate with 12.1% crude protein. The concentrate was given without extra fat or with 5, 10, 15 or 20% lard. Percentage digestibilities were of crude protein 53.1, 62.8, 60.4, 57.8, 53.6 and 54.2, and of crude fibre 68.7, 63.9, 58.4, 51.4, 46.0 and 42.2.-E. O. (Abstract retrieved from CAB Abstracts by CABI’s permission)

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Section: Literaturementioning

confidence: 96%

Influence of supplemented animal fats upon digestibility of ration components by ruminants.

Dijkstra¹

1969

NJAS

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“…Feeding diets to beef cattle that contain 7% tallow or 5% vegetable oil improves average daily gains and feed to gain ratios, whereas dry matter digestibility is reduced (Dyer et al, 1957;. In other studies, increased average daily gains and improved feed efficiencies also were observed for beef cattle fed diets with a protected tallow supplement, but was without an effect on digestibility Dinius et al, 1978;McCartor et al, 1979).…”

Section: Introductionmentioning

confidence: 79%

“…No differences (P>.05) were observed for average daily gain, daily feed intake or feed to gain ratio. Other studies have shown supplemental dietary lipid to increase growth rate when the fat was fed as formaldehyde-protected tallow McCartor and Smith, 1978) or unprotected tallow or vegetable oil (Dyer et al, 1957;. In contrast, other studies have shown a depressing effect of supplemental fat on growth rate in cattle (Putnam et al, 1969;.…”

Section: Growth and Carcass Characteristicsmentioning

confidence: 98%

Use of full-fat soybeans as a source of rumen bypass polyunsaturated fatty acids for beef cattle finishing diets

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Metabolism in Adipose Tissue of Ruminants 32 Lipogenesis in adipose tissue 37 Dietary effects on ruminant lipogenesis 39 Effects of feed restriction 39 Effect of dietary energy 39 Effect of dietary fat 40 Other factors affecting lipogenesis in ruminant adipose tissue 42 Effect of cell volume 42 Effect of animal growth 42 Effect of anatomical location 43 Deposition and mobilization of lipid in ruminants 44 Conclusion 46 SECTION I.

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1974

Intensive Beef Production

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Effects of Fat, Oxytetracycline, and Stilbestrol on Performance and Hepatic Stores of Carotene and Vitamin A in Steers

Cited by 9 publications

References 0 publications

Influence of supplemented animal fats upon digestibility of ration components by ruminants.

Influence of supplemented animal fats upon digestibility of ration components by ruminants.

Use of full-fat soybeans as a source of rumen bypass polyunsaturated fatty acids for beef cattle finishing diets

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