Supplementation with a mixture of whole rice bran and crude glycerin on metabolic responses and performance of primiparous beef cows

The aim of the present study was to investigate the effect of manipulating the provision of sports drink during soccer-specific exercise on metabolism and performance. Soccer players (N = 12) performed a soccer-specific protocol on three occasions. On two, 7 mL/kg carbohydrate-electrolyte (CHOv) or placebo (PLA) solutions were ingested at 0 and 45 min. On a third, the same total volume of carbohydrate-electrolyte was consumed (CHOf) in smaller volumes at 0, 15, 30, 45, 60, and 75 min. Plasma glucose, glycerol, non-esterified free fatty acids (NEFA), cortisol, and CHO oxidation were not significantly different between CHOv and CHOf (P > 0.05). Sprint power was not significantly affected (P > 0.05) by the experimental trials. This study demonstrates when the total volume of carbohydrate consumed is equal, manipulating the timing and volume of ingestion elicits similar metabolic responses without affecting exercise performance.

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Crude glycerin is an efficient alternative to corn in the diet of feedlot lambs

Archives Animal Breeding ◽

10.5194/aab-64-387-2021 ◽

2021 ◽

Vol 64 (2) ◽

pp. 387-393

Author(s):

Fernada Almeida Merlim ◽

Américo Garcia Silva Sobrinho ◽

Thiago Henrique Borghi ◽

Luís Gabriel Alves Cirne ◽

Roberta Lima Valença ◽

...

Keyword(s):

Body Weight ◽

Nitrogen Balance ◽

Crude Glycerin ◽

Ether Extract ◽

Final Body Weight ◽

Randomized Design ◽

Total Carbohydrates ◽

Efficient Alternative ◽

Feedlot Lambs ◽

And Performance

Abstract. The objective of this study was to evaluate the intake, digestibility, nitrogen balance, and performance of feedlot lambs fed diets containing crude glycerin. A total of 30 Ile de France lambs were confined to individual pens at an average age of 45 d: 15.1 kg initial body weight and 32.2 kg final body weight. The animals were distributed in a completely randomized design and fed three diets containing fresh sugarcane as forage (50 %) and concentrate (50 %), with or without the inclusion of 100 and 200 g vegetable crude glycerin per kilogram dry matter (DM) replacing corn. Dietary glycerin inclusion reduced the intake of ether extract (P<0.001) and total carbohydrates (P=0.048) as well as the apparent digestibility of ether extract (P<0.001), but it had no effect on the intake and digestibility of the other nutrients nor on lamb performance. The apparent nitrogen balance of lambs on the three diets was positive. Although it does not affect the intake and digestibility of most nutrients, the inclusion of 100 and 200 g kg−1 DM of crude glycerin in the diet tends to worsen lamb performance, indicating that the ideal level of inclusion should be below 100 g kg−1 DM of crude glycerin.

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Feeding behavior, ruminal fermentation, and performance of pregnant beef cows differing in phenotypic residual feed intake offered grass silage1

Journal of Animal Science ◽

10.2527/jas.2013-7438 ◽

2014 ◽

Vol 92 (5) ◽

pp. 2170-2181 ◽

Cited By ~ 19

Author(s):

C. Fitzsimons ◽

D. A. Kenny ◽

A. G. Fahey ◽

M. McGee

Keyword(s):

Feeding Behavior ◽

Feed Intake ◽

Residual Feed Intake ◽

Beef Cows ◽

Ruminal Fermentation ◽

And Performance

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The herbage intake and performance of autumn-calving beef cows and their calves when grazing continuously at two sward heights

Animal Science ◽

10.1017/s0003356100005171 ◽

1990 ◽

Vol 51 (1) ◽

pp. 85-92 ◽

Cited By ~ 9

Author(s):

I. A. Wright ◽

T. K. Whyte ◽

K. Osoro

Keyword(s):

Live Weight ◽

Beef Cows ◽

Metabolizable Energy ◽

Weight Changes ◽

Sward Height ◽

Herbage Intake ◽

Weight Gains ◽

Cow Performance ◽

And Performance ◽

Calving Difficulty

ABSTRACTThirty-nine Hereford × Friesian autumn-calving cows (mean calving date 17 September) and their Charolais-cross calves were used in a 2 × 2 × 2 factorial experiment to assess the effects of feeding level in winter and sward height in summer on intake and performance. Mean estimated metabolizable energy intakes during winter (30 October to 6 May) were 63 (L) or 92 (H) MJ/day. Two sward heights, 4·8 (SI) or 7·6 (Tl) cm, were imposed from turn-out to weaning on 3 July, and a further two sward heights, 4·7 (S2) or 8·0 (T2) cm, from weaning to housing on 1 October. At turn-out the H cows were 17 kg heavier (P > 0·05) than the L cows and their calves were 30 kg heavier (P < 0·01). Cow herbage intakes were significantly higher on the Tl and T2 treatments compared with the SI and S2 treatments as were live-weight changes: 0·94 v. –0·01 kg/day (P < 0·001) for Tl and SI treatments and 0·96 v. –0·18 kg/day (P < 0·001) for T2 and S2 treatments respectively. Calves on the Tl treatment had higher live-weight gains than those on the SI treatment (1·40 v. 0·63 kg/day; P < 0·001). After weaning the SI cows had significantly higher herbage organic matter intakes than the Tl cows (P < 0·05) and had significantly higher live-weight gains (0·51 v. 0·28 kg/day; P < 0·05). Calving difficulty and calf birth weight were not affected by any of the treatments. The results demonstrate that both previous and current level of nutrition have an effect on cow performance. When cows are turned out to pasture at body condition scores of 2·25 to 2·5, the sward heights recommended for spring-calving cows are equally appropriate for autumn-calving cows.

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