Characteristics of Youthful Beef Carcasses in Relation to Weight, Age and Sex: Iii. Meat Quality Attributes

Martin, A. H.; Fredeen, H. T.; Weiss, G. M.

doi:10.4141/cjas71-043

Cited by 19 publications

(7 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The greater marbling for heifers compared with steers was similar to that reported by others (Hedrick et al 1969;Wilson et al 1969;Martin et al 1971;Jones et al 1991). Bulls have less marbling fat than either heifers or steers (Hedrick et al 1969;Wilson et al 1969;Martin et al 1971;Jones et al 1991).…”

Section: Sex Effectssupporting

confidence: 72%

“…Bulls have less marbling fat than either heifers or steers (Hedrick et al 1969;Wilson et al 1969;Martin et al 1971;Jones et al 1991). Gender differences are most likely the result of the different reproductive hormones present in bulls and heifers, with testosterone causing the production of lean muscle and estrogen resulting in more fat deposition in muscle.…”

Section: Sex Effectsmentioning

confidence: 99%

See 1 more Smart Citation

Effect of Wagyu genetics on marbling, backfat and circulating hormones in cattle

Mears¹,

Mir²,

Bailey³

et al. 2001

Can. J. Anim. Sci.

View full text Add to dashboard Cite

. 2001. Effect of Wagyu genetics on marbling, backfat and circulating hormones in cattle. Can. J. Anim. Sci. 81: 65-73. Backfat depths, marbling scores, and concentrations of plasma insulin, cortisol, triiodothyronine (T3), and thyroxine (T4) were determined in 394 calves with and without Wagyu genetics. Hormone concentrations were determined three to five times for hormones between weaning and slaughter. Calves were weighed and backfat was ultrasonically determined at 28-d intervals, and assigned for slaughter when ultrasonic backfat depths approached 12 mm. Heifers weighed less (P < 0.001) and had more backfat (P < 0.05) and more marbling (P < 0.05) than steers at slaughter. Breed influenced slaughter weight (P < 0.001) and average backfat depth (P < 0.001), with Wagyu/Angus and Wagyu/Hereford crosses and Angus purebreds generally having greater backfat depths and lower slaughter weights than other crosses and purebreds. Marbling scores were not affected by breed (P > 0.1), although Wagyu crosses had more marbling (P < 0.05) compared with purebreds when variability in marbling due to differences in backfat depth was removed. Plasma cortisol, T3 and T4 were affected by calf breed, although there were no clear patterns for groups of breeds or breed crosses. There was a slight trend (P < 0.2) towards higher insulin levels and lower cortisol, T3 and T4 levels in some groups of calves with more backfat. Higher mean levels (P < 0.05) of T3 and T4 were found in all but one group of animals with more marbling. Thus, thyroid hormones may have a role to play in enhancing marbling in cattle. Les génisses étaient moins lourdes (P < 0,001) que les bouvillons à l'abattage, mais elles présentaient plus de gras dorsal (P < 0,5) et un meilleur persillé (P < 0,05). La race influe sur le poids à l'abattage (P < 0,001) et une couche de gras dorsal d'épaisseur moyenne (P < 0,001), les hybrides Wagyu/Angus et Wagyu/Hereford et les Hereford purs se caractérisant généralement par une couche plus épaisse de gras dorsal et un poids plus faible à l'abattage que les autres croisements ou races pures. L'état du persillé n'est pas affecté par la race (P > 0,1), bien que les hybrides Wagyu présentent un meilleur persillé (P < 0,05) que les sujets de race pure quand on ne tient pas compte des variations attribuables aux fluctuations de l'épaisseur du gras dorsal. La concentration de cortisol, de T3 et de T4 dans le sang est affectée par la race du veau, même si aucune tendance ne se dessine clairement pour telle ou telle race ou certains croisements. On note une légère tendance (P < 0,2) à la hausse de la concentration d'insuline et à la baisse de la concentration de cortisol, de T3 et de T4 chez quelques groupes de veaux présentant une couche de gras dorsal plus épaisse. Tous les groupes caractérisés par un meilleur persillé sauf un présentaient une concentration moyenne plus élevée (P < 0,05) de T3 et de T4. Les hormones de la glande thyroïde pourraient donc jouer un rôle à ce niveau chez les bovins.

show abstract

Section: Sex Effectssupporting

confidence: 72%

Section: Sex Effectsmentioning

confidence: 99%

Effect of Wagyu genetics on marbling, backfat and circulating hormones in cattle

Mears¹,

Mir²,

Bailey³

et al. 2001

Can. J. Anim. Sci.

View full text Add to dashboard Cite

show abstract

“…Marbling score decreased (higher levels ofmarbling fat) from August to September (Hedrick et al 1969;Wilson et al 1969;Martin et al 1971 …”

mentioning

confidence: 99%

A survey of marbling fat in Canadian beef carcasses

Jones¹,

Tong²,

Talbot³

1991

Can. J. Anim. Sci.

View full text Add to dashboard Cite

“…For example, in Czechoslovakia, Mojto, Jedlicka, Foltys and Palenik (1982) found the proportions of bulls, cows and heifers with dark-cutting beef were 0-56, 0-14 and 0-16 respectively (of a total of 630 animals). It is widely accepted that the incidence of dark-cutting beef is higher among bulls than among steers and heifers (Martin, Fredeen and Weiss, 1971;Augustini, Fischer and Schon, 1979;Buchter, 1975). The reason for the higher incidence appears to be a greater susceptibility to stress among bulls (Martin et al, 1971) rather than any intrinsic quality of the bulls' muscles.…”

Section: Introductionmentioning

confidence: 90%

“…It is widely accepted that the incidence of dark-cutting beef is higher among bulls than among steers and heifers (Martin, Fredeen and Weiss, 1971;Augustini, Fischer and Schon, 1979;Buchter, 1975). The reason for the higher incidence appears to be a greater susceptibility to stress among bulls (Martin et al, 1971) rather than any intrinsic quality of the bulls' muscles. The method of handling bulls before slaughter was observed to be related to the incidence of carcasses with dark-cutting characteristics (Tarrant, 1977).…”

Section: Introductionmentioning

confidence: 90%

Pre-slaughter social activity of young bulls relating to the occurrence of dark-cutting beef

Franc¹,

Bartoš²,

Hanyš³

et al. 1988

Anim. Sci.

View full text Add to dashboard Cite

Twenty bulls of three different breeds were tethered individually from 5 months until slaughter at 21 months. On the day of slaughter, the bulls were divided into groups of five animals, transported and then released in a pen. The first bull of the group was slaughtered 60 or 110 min after regrouping. Subsequent bulls were slaughtered individually at 50-min intervals. Social interactions among the bulls were recorded. Muscle pH, light reflectance values and water-holding capacity were measured in samples of m. longissimus dorsi. These characteristics showed correlations with the amount of non-agonistic social activity in which a bull had been involved before slaughter. The characteristics were also correlated with the number of agonistic interactions. Whether a bull was behaving as a dominant or a submissive animal did not influence the incidence of dark-cutting meat as judged by pH values. On the other hand, light reflectance values and water-holding capacity were correlated with the number of passive agonistic interactions (i.e. how many times a bull was attacked) and considerably less with the number of active interactions (number of attacks by the bull). The incidence of butting was not significantly related to muscle characteristics but mounting was significantly correlated with them.The study indicates that dark-cutting beef is primarily caused by physically exhausting activities such as mounting, and further modified by stress-inducing social interactions.

show abstract

Characteristics of Youthful Beef Carcasses in Relation to Weight, Age and Sex: Iii. Meat Quality Attributes

Cited by 19 publications

References 7 publications

Effect of Wagyu genetics on marbling, backfat and circulating hormones in cattle

Effect of Wagyu genetics on marbling, backfat and circulating hormones in cattle

A survey of marbling fat in Canadian beef carcasses

Pre-slaughter social activity of young bulls relating to the occurrence of dark-cutting beef

Contact Info

Product

Resources

About