Compensatory growth in Belgian Blue bulls previously grazed at two stocking rates: animal performance and meat characteristics

Hornick, Jean-Luc; Raskin, Pascale; Clinquart, Antoine; Dufrasne, Isabelle; Eenaeme, Christian Van; Istasse, Louis

doi:10.1017/s1357729800032835

Cited by 13 publications

(7 citation statements)

References 14 publications

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“…A similar effect was also observed by Mandell et al [35] with steers finished indoors on a cereal diet after a growing period on grass silage compared to a control group fattened indoors on a cereal diet. The slight reduction of the concentration of C18:2 and the significant increase of the concentration in C18:3 in the intramuscular fat of bulls previously grazed were in agreement with the observations of Wood et al [56], Marmer et al [36] and Hornick et al [27]. The determination of the concentration in C18:3 could be used to trace the fattening management when a grazing period is included.…”

Section: Slaughter Performance and Meat Qualitysupporting

confidence: 90%

Less intensified grazing management with growing fattening bulls

et al. 2006

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-Animal performance, composition and quality of meat from Belgian Blue bulls either fattened indoors (FI) or finished indoors after a previous grazing period were studied during six years. During the grazing period, three intensification managements were tested on a permanent pasture conducted as set stocking. The intensification levels were either high (HN: 140 kg N·ha −1 with 6 bulls·ha −1 ) or moderate with a 33% reduction of nitrogen fertilisation but with the same stocking rate (MN: 93 kg N·ha −1 , 6 bulls·ha −1 ) or low with no nitrogen fertiliser but with a reduced stocking rate (ON, 4 bulls·ha −1 ). The levels of intensification did not affect sward characteristics and chemical composition of the grass. The apparent nitrogen efficiency per ha was larger in the ON plot than in the HN and MN plots (26 vs. 14%). The average daily gain of bulls during the grazing season was similar in the three groups at 1.0 kg·d −1 . The bulls from the FI group were characterised by average daily gains significantly higher than the bulls which were previously grazed and then finished indoors (1.5 vs. 1.2 kg·d −1 ; P < 0.01). The slaughter weight, the carcass composition, the dressing percentage and most of the meat quality parameters were similar between the treatment groups. The inclusion of a grazing period in the fattening system produced a meat which was darker (lower L*, P < 0.01), more red (higher a*, P < 0.05) and had a higher content of linolenic acid (C18:3 n-3) than that of the animals fattened indoors.fattening / bulls / grazing / nitrogen fertiliser / stocking rate Résumé -Désintensification de la conduite de prairies pâturées par de jeunes taurillons. Les performances zootechniques, la composition et la qualité de la viande de taurillons Blanc Bleu belge engraissés uniquement en stabulation (FI) ou finis en stabulation après une période de pâturage ont été étudiées pendant six années. Pendant la période de pâturage, trois niveaux d'intensification ont été testés dans une prairie permanente. Le système de pâturage continu a été employé. Les niveaux d'intensification ont été soit élevé (HN : 140 kg N·ha −1 ; 6 taureaux·ha −1 ), soit modéré avec une réduction de 33 % de la fertilisation azotée mais avec le même chargement (MN : 93 kg N·ha gain quotidien moyen des taureaux pendant la période de pâturage a été identique dans les trois lots (1 kg·j −1 ). Les taurillons du groupe FI ont présenté des gains quotidiens moyens significativement plus élevés que ceux des taurillons ayant séjourné en prairie et finis en stabulation (1,5 vs. 1,2 kg·j −1 ; P < 0,01). Le poids d'abattage, la composition de carcasse ainsi que le rendement à l'abattage et les paramètres de qualité de viande ont été semblables entre les traitements. L'inclusion d'une période de pâturage a produit une viande plus foncée et rouge par rapport au lot FI. Les teneurs en C18:3 ont été plus élevées (P < 0,05) pour les taurillons du lot HN par rapport à celles du lot FI. engraissement / taurillons / pâturage / fumure azotée / chargement

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Section: Slaughter Performance and Meat Qualitysupporting

confidence: 90%

Less intensified grazing management with growing fattening bulls

et al. 2006

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“…Although young grass may have an excellent nutritive value, intake by young cattle often results in sub-maximal performances. Growth rate on pasture was lower than in indoor-fed animals in experiments of Boucqué et al (1978) and Hornick et al (1998). This reduced growth rate may be provoked by a relatively low organic matter intake as suggested by Alder and Cooper (1967) and Hodgson (1968).…”

Section: Introductionmentioning

confidence: 84%

Feed Intake of Young Double-Muscled Bulls Fed on Grass and Supplemented with Sugar-Beet Pulp

Fiems¹,

Boever²,

Campeneere³

et al. 2002

Archiv für Tierernaehrung

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Daily dry matter intake in young growing double-muscled bulls, fed indoors on grass, was estimated based on forty-four intake data from 28 animals, ageing at least five months and weighing up to 400 kg live weight. Intake was measured during five consecutive days using one of eighteen cuts of grass. Fresh meadow grass (mainly Lolium perenne) was fed ad libitum and two kg dried sugar-beet pulp was offered per animal and per day. Animal live weight averaged 278 +/- 82 kg and mean total daily dry matter intake amounted to 5.05 +/- 1.59 kg or 73.6 +/- 13.7 g per kg metabolic weight, while pulp dry matter intake amounted to 1.49 +/- 0.50 kg per day. Regression analysis showed that animal as well as feed characteristics could explain up to approximately 90% of the variation in daily dry matter intake. The supplementation resulted in an extra daily dry matter intake of 0.68 g per g pulp dry matter. Intake of double-muscled animals was considerably lower than previously reported for non-double-muscled cattle. An extra supplementation of young grazing double-muscled animals could be advised from these findings, while extra protein should also be considered.

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“…Hornick et al (1998) manipulated growth rates during growout through increases in stocking rate, while slaughtering at a constant fat depth to remove differences in fatness. These researchers found no difference in fatty acid composition of subcutaneous fat resulting from manipulation of growth rate.…”

Section: Discussionmentioning

confidence: 99%

Environmental effects on the fatty acid composition of subcutaneous beef fat

Kelly¹,

Tume²,

Newman³

et al. 2001

Aust. J. Exp. Agric.

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Abstract. This paper describes the effect of location and level of nutrition before finishing on the fatty acid composition of subcutaneous beef fat. Interactions between location and nutritional treatments, finishing regime and market category were also examined. The effect of level of nutrition on the fatty acid composition of beef fat during the period from weaning until feedlot entry was small but significant. The lowest level of nutrition had the highest percentage of C18:0 at slaughter, which was offset by reductions in C16:0 in cohort 93-1 and C18:1c9 in cohort 94-2. Location had a large effect on the fatty acid composition of subcutaneous beef fat. At a common slaughter weight, cattle grown in a tropical environment were older, fatter and had higher percentages of saturated fats, including C16:0 and C18:0, than cattle grown out in a temperate environment.

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Compensatory growth in Belgian Blue bulls previously grazed at two stocking rates: animal performance and meat characteristics

Cited by 13 publications

References 14 publications

Less intensified grazing management with growing fattening bulls

Less intensified grazing management with growing fattening bulls

Feed Intake of Young Double-Muscled Bulls Fed on Grass and Supplemented with Sugar-Beet Pulp

Environmental effects on the fatty acid composition of subcutaneous beef fat

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