A semi-automated reaction rate analysis for d-β-hydroxybutyrate in blood

Chandrasekaran, Appavu; Lord, P.S.

doi:10.1016/0009-8981(73)90390-2

Cited by 3 publications

(2 citation statements)

References 5 publications

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“…Blood samples were taken from the jugular vein of lambs at the start of the trial and prior to leaving the farm for slaughter. Blood serum D-|3-hydroxybutyrate (p"OH) was estimated by a reaction-rate method based on methods described by Chandrasekaran, Glover and Lord (1972) and Chandrasekaran and Lord (1973).…”

Section: Methodsmentioning

confidence: 99%

Effects of fish-meal supplementation on performance of overfat lambs fed on barley straw to reduce carcass fatness

Vipond¹,

King²,

Ørskov³

et al. 1989

Anim. Prod.

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1989). Effects of sh-meal supplementation on performance of overfat lambs fed on barley straw to reduce carcass fatness. Animal Production, 48, pp 131-138 ABSTRACT The effect of undegradable protein supply was studied in overfat lambs given low-energy diets to reduce carcass fatness. Two trials involving sequential batches of 48 overfat Suffolk x lambs investigated the effects of supplementing an ad libitum straw diet with either 0 or 100 g fish-meal pellets daily for 14-, 28-and 42-day periods. Lambs supplemented with fish meal in trials 1 and 2 lost significantly less weight. Weight losses (g/day) were -2 v. -129 (s.e.d. 26) and -58 v. -188 (s.e.d. 29) respectively. There were highly significant and favourable effects of fish-meal supplementation on carcass weight and composition (recorded in the second trial only). Carcass weight (kg) after 14, 28 and 42 days was 21-8, 20-4 and 18-3 for unsupplemented lambs and 22-4, 21-9 and 21-6 for supplemented lambs; saleable lean (kg) as determined by a commercial boning-out process was 12-1, 11-3 and 10-0 v. 12-7, 12-6 and 12-3 respectively. There were corresponding changes in conformation but fat trimmed off the carcass was not significantly reduced by the dietary treatments. There was, however, a reduction by one-fifth in excess carcass fat (about 0-5 kg) over the period 14 to 42 days on trial, and over the trial as a whole, fat trim fell from an estimated proportion of carcass weight of 0-17 to 012, equivalent to a fall in Meat and Livestock Commission fatness score from 4H to 3L. Results indicated very favourable financial rewards for supplementing diets of overfat lambs with fish meal.

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Section: Methodsmentioning

confidence: 99%

Effects of fish-meal supplementation on performance of overfat lambs fed on barley straw to reduce carcass fatness

Vipond¹,

King²,

Ørskov³

et al. 1989

Anim. Prod.

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“…Levels of D-(3 hydroxybutrate in the blood serum were determined from weekly jugular vein samples using a reaction rate method based on methods described by Chandrasekaran, Glover and Lord (1972) and Chandrasekaran and Lord (1973). Ewes were fed in a similar manner to those in experiment 1.…”

Section: Methodsmentioning

confidence: 99%

The effect of winter shearing of housed pregnant ewes on food intake and animal performance

Vipond¹,

King²,

Inglis³

et al. 1987

Anim. Sci.

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1987). The effect of winter shearing of housed pregnant ewes on food intake and animal performance. ABSTRACTThe effects of winter shearing on the food intake and performance of housed ewes was studied in a series of three experiments. Winter shearing resulted in a proportional increase of dry-matter intake in ewes of 0-16 and 0-43 on two silage-based diets, of 0-09 on swede-based diets, but of only 0-02 on a hay-based diet. Shearing increased intake by a greater amount in smaller ewes and a similar trend occurred on diets containing a greater proportion of barley. Shearing increased average lamb birth weight by about 600 g (4-65 kg v. 4-06 kg), apparently as an effect of shearing per se rather than as a result of the increased energy intake. An increase in gestation length of around 1-8 days accounted for one-fifth of this increased birth weight. The effect on gestation length of shearing was to increase the unnaturally short gestation of housed unshorn ewes, this short gestation being attributed to problems of heat stress in late pregnancy. Results indicated management advantages of winter shearing in favourable climatic environments. * * 3-Z m /* X m > JO z o o •n X o c m D to tn C/5t Adjusted by covariate within breed for litter size.

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Catalytic and Differential Rate Methods

Mottola¹,

Pardue²

1974

C R C Critical Reviews in Analytical Chemistry

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A semi-automated reaction rate analysis for d-β-hydroxybutyrate in blood

Cited by 3 publications

References 5 publications

Effects of fish-meal supplementation on performance of overfat lambs fed on barley straw to reduce carcass fatness

Effects of fish-meal supplementation on performance of overfat lambs fed on barley straw to reduce carcass fatness

The effect of winter shearing of housed pregnant ewes on food intake and animal performance

Catalytic and Differential Rate Methods

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