Vitamin A Nutrition of Beef Cattle Fed Corn Silages1

Jordán, H.; Smith, G. S.; Neumann, Anke; Zimmerman, Jack E.; Breniman, George William

doi:10.2527/jas1963.223738x

Cited by 29 publications

(5 citation statements)

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“…This study also suggests that dairy calves can have quite low levels of liver vitamin A stores without showing any detectable signs of vitamin A deficiency. Jordan et al (1963) silage and having liver and plasma vitamin A concentrations considerably higher than those obtained in this experiment. Deficiency symptoms included failure to gain weight, edema of the brisket, swelling of the hind legs and edema of the optic disk.…”

Section: Resultscontrasting

confidence: 77%

“…p ERRY et al (1957)and Neumann (1960) reported that steers fed an all-concentrate ration developed vitamin A deficiency even though carotene was present in the diet in excess of requirements (N. R.C., 1958). Jordan et al (1963) found similar results when steers were fed principally on corn silage. Steers fed a "high" nitrate silage were depleted of their liver vitamin A reserves more rapidly than those fed a "low" nitrate silage; however, at the end of the trial all animals had rather low levels of vitamin A storage in the liver.…”

supporting

confidence: 58%

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Utilization of Corn Silage Carotene by Dairy Calves

Rw¹,

La²,

Dr³

et al. 1967

Journal of Animal Science

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Section: Resultscontrasting

confidence: 77%

supporting

confidence: 58%

Utilization of Corn Silage Carotene by Dairy Calves

Rw¹,

La²,

Dr³

et al. 1967

Journal of Animal Science

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“…Retinol concentration was lowest in the MGM of rams fed silage made from hybrid ryegrass (group RB), whereas β-carotene intake was higher in this group than in the FF group (322 mg/day vs. 274 mg/day). Previous research has shown that for some reasons, silage carotenes may be very poorly utilized or silage rations may increase the expenditure of vitamin A [53]. These observations should be confirmed in future feeding trials involving hybrid ryegrass silage.…”

Section: Retinol Concentration In Meat From Rams (Musculus Gluteus Ma...mentioning

confidence: 85%

The Effect of Festulolium Silage-Based Diets on the Content of Tocopherols, β-Carotene and Retinol in Meat from Young Rams

Czurgiel

Antoszkiewicz

Mazur-Kuśnirek

et al. 2023

Animals

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This study analyzed the chemical composition and the β-carotene, tocopherol and retinol content of meat (musculus longissimus lumborum, musculus gluteus maximus) from young rams fed different silage-based diets. The animals were divided into four groups depending on the type of silage in the feed ration (hybrid ryegrass, Festulolium cv. Becva, Festulolium cv. Felopa, Festulolium cv. Paulita). The concentrations of the examined lipophilic compounds were measured via high-performance liquid chromatography (HPLC). Animals fed a diet based on ryegrass silage had the highest intakes of α-, β-, γ- and δ-tocopherol and total tocopherols (p < 0.01). Muscles of rams fed Festulolium silage-based diets contained more tocopherols (p < 0.01) and retinol (p < 0.01 in m. g. maximus; p = 0.053 in m. l. lumborum) than the meat of animals receiving hybrid ryegrass-based diets. The highest amounts of tocopherols (p < 0.01) and retinol (p < 0.01 in m. g. maximus; p = 0.053 in m. l. lumborum) were found in meat from rams fed rations based on silage made from Festulolium cvs. Felopa and Paulita. The analysis revealed a positive correlation between the intake of tocopherols and the α-tocopherol content of meat (r = 0.99), as well as between the β-carotene intake and the retinol content of meat (r = 0.92 in m. l. lumborum; r = 0.91 in m. g. maximus).

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“…These levels are, however, appreciably higher than those given by North American workers who report values between 30 and 50/*g./g. Jordan et al 1961;Zimmerman, Neumann, Durdle & Smith, 1962;Meyer et al 1962;Jordan et al 1963;Beeson, 1963, personal communication).…”

Section: Discussionmentioning

confidence: 99%

Finishing steers on high-grain rations. Effects of type of silage, level of urea, vitamin A and cobalt supplementation on body-weight gain, feed efficiency and carcass composition

Morris¹,

Gartner²

1967

J. Agric. Sci.

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Simple rations of sorghum grain and sorghum silage have been shown by Morris & O'Bryan (1965) and Morris (1966) to be suitable for the intensive finishing of steers in yards. With these rations, efficiency of feed conversion increased as the percentage grain in the final ration increased, attaining a maximum at 90 and 100 % grain. At all levels of grain feeding, groups of steers fed 60 g. urea per head daily had rates of gain and efficiencies of feed conversion superior to those not receiving urea. In the experiment reported by Morris (1966), steers fed final rations of 80, 90 or 100 % sorghum grain rapidly depleted their hepatic reserves of vitamin A.The present experiment was designed to investigate the performance of steers fed in yards on rations which ultimately contained 90% sorghum grain. Steers were accustomed to this high level of grain feeding by gradually increasing the allocation of grain according to a set schedule. Variables studied were two types of sorghum silage (sweet and grain) as the roughage component of the rations; with two levels of urea supplementation, 60 and 120 g. per head daily; with and without oral daily supplementation with vitamin A and with and without an intraruminal cobalt oxide pellet. MATERIALSFodder. Sorghum silage was prepared in two concreted hillside pit silos of similar design (Radel, 1961) from crops of sweet sorghum (Sorghum vulgare Pers. variety Sugardrip) and grain sorghum (Sorghum vulgare Pers. variety Brolga). Each variety of sorghum was planted at the rate of 7 lb. seed per acre in strips each of 16 rows. These strips were allocated in a random block design, and harvested by a single row forage harvester. Harvesting of the grain sorghum and sweet sorghum plants for silage commenced 93 and 121 days respectively after planting, when the seed was in the medium to firm dough stage.Random sampling of the standing sweet and grain sorghum crops immediately before harvesting, indicated that the silage made from sweet sorghum plants contained over 10% less grain than from the grain sorghum plants. The percentage contribution, on a dry-matter basis, of the seed head to total plant weight for sweet sorghum was 28-0 + 4-5andforgrainsorghum43-6± 7-1. Similarly, the percentage grain in the seed head and in the whole plant for sweet sorghum was 89-9 ± 4-0 and 25-1, and for grain sorghum 82-2 + 5-1 and 35-9. Sorghum grain (Sorghum vulgare Pers. variety Alpha) was purchased from a single source of production, rolled, and 1 % of superfine limestone added before feeding.

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Vitamin A Nutrition of Beef Cattle Fed Corn Silages1

Cited by 29 publications

References 0 publications

Utilization of Corn Silage Carotene by Dairy Calves

Utilization of Corn Silage Carotene by Dairy Calves

The Effect of Festulolium Silage-Based Diets on the Content of Tocopherols, β-Carotene and Retinol in Meat from Young Rams

Finishing steers on high-grain rations. Effects of type of silage, level of urea, vitamin A and cobalt supplementation on body-weight gain, feed efficiency and carcass composition

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