Performance, carcass and meat quality of young bulls, steers and heifers slaughtered at a common body weight

Blanco, M.; Ripoll, G.; Delavaud, Carole; Casasús, I.

doi:10.1016/j.livsci.2020.104156

Cited by 34 publications

(36 citation statements)

References 51 publications

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“…Calculated dressing percentage was also higher in the bulls' group, in average ˗ 55.5 ± 0.10%, while in the heifers' group -54.1 ± 0.12% (p ≤ 0.05). Similar results have been found in studies by other authors (Blanco M et al 2020; Bures D, Barton L 2012; Pesonen M, Huuskonen A 2015; Weglarz A 2010a;) showing that bulls before slaughter reached higher weight and dressing percentage.…”

Section: Resultssupporting

confidence: 90%

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Effect of sex and age on beef cattle meat pH

Muizniece

Kairiša

2020

Agric. sci. pract.

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Aim. The aim of the study was to explain the difference of pH values in heifer and bull meat and to carry out an analysis of the effect of age in groups of both sexes. Methods. The study contains data on 2,469 beef breed and their crossbreed cattle fattened on farms in Latvia and Lithuania, slaughtered in a certifi ed Lithuanian slaughterhouse ʻAgaras’ in 2018. For the assessment of the effect of sex, the beef cattle were divided into 2 study groups: 1,266 bulls and 1,203 heifers. 3 study groups were created for analysis of the effect of age: 12 – 17 months; 18 – 23 months; 24 and more months. Analysis of the data acquired was based on the indicators of descriptive statistics. T–test and Pearson correlation analysis were used. Results. The average pH in the meat of bulls was 5.87 ± 0.011, but in the meat obtained from heifers – 5.66 ± 0.005 (p ≤ 0.05). Within the desired pH value from 5.4 to 5.8, the group of bulls comprised 65 % of carcasses and the group of heifers – 86 % of carcasses. In the group of bulls, 35 % of carcasses had an increased pH in the meat (pH –≥ 5.9), while in the heifers’group – 13%. For a small part of the carcasses in both study groups, too low pH was found in meat (pH ≤ 5.3), with 1% in the group of bulls and 0.4% in the group of heifers. An analysis of the effect of age found no signifi cant differences in pH values between bulls of different ages. In the heifers’study group, the highest pH in meat was found in the group above 24 months of age, pH–5.69. Correlation analysis between the meat pH and the slaughter results showed a weak or non–existent relationship. In the overall study group, stronger correlation was observed between pH and fat score (r = –0.21, p < 0.05). Conclusions. The results indicate that meat from heifers is better quality in terms of desired pH. Meat with the desired pH can be used in the production of high-quality products that provide higher profi ts.

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Section: Resultssupporting

confidence: 90%

“…Heifers' group received signifi cantly higher fat score -2.98 ± 0.01. As shown by the work of several other researchers, bulls are charact erized by better muscularity, while heifers show a higher fat content on carcass (Blanco M et al 2020;Pogorzelska-Przybyłek et al 2018).…”

Section: Resultsmentioning

confidence: 88%

Effect of sex and age on beef cattle meat pH

Muizniece

Kairiša

2020

Agric. sci. pract.

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“…Thus, this study utilized live weight information for steers [25] and assumed the same live weight gains for bulls. Dairy-origin heifers were assumed to have 10% lower weaning weight and live weight gain [29,45,46] compared to male calves. To utilize excess spring pasture supply, this study extended the slaughtering ages of young beef cattle to 14 months, based on live weight gain projected from 8-, 10-and 12-month-old young beef cattle.…”

Section: Young Beef Cattle Activitiesmentioning

confidence: 99%

Optimization of Profit for Pasture-Based Beef Cattle and Sheep Farming Using Linear Programming: Young Beef Cattle Production in New Zealand

et al. 2021

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In New Zealand, surplus dairy-origin calves not needed as replacement or for beef cattle farms requirements for finishing are commercially slaughtered within two weeks of age. This system has perceived ethical issues which can potentially negatively affect the dairy industry. Therefore, a young beef cattle production system to maximize the use of excess calves within the land size constraint is considered as an alternative to a traditional 18 to 33-months slaughtering system. The current study examined the effects of young beef cattle production with slaughter ages at 8 to 14 months on pasture utilization, farm profitability and selling policy on class 5, intensive finishing sheep and beef cattle farms in New Zealand. A linear programming model that had previously been developed for this farm class (optimized traditional beef cattle system) was modified to include a young beef cattle slaughter system and identified the carrying capacity for young and traditional beef cattle and the selling policy required to optimize pasture utilization and farm profitability. Systems with young beef cattle slaughtered at 8, 10, 12 or 14-months of age were simulated without (Scenario I) or with (Scenario II) decreasing the number of traditional beef cattle. Daily per head energy demand for maintenance and live weight change was estimated and converted to kg DM/head on a bimonthly basis. Carcasses from young beef cattle were processed as one class under manufacturing beef price (NZ$4.50). The modified young and traditional beef cattle slaughtering system maintained an extra 6% and 35% beef cattle in Scenario I and Scenario II respectively, and finished 90% and 84% of traditional beef cattle before the second winter. Pasture supplied 98% of the feed demand for the beef cattle activities and 79–83% of that was consumed. Mixed young and traditional beef cattle finishing scenarios returned 2% less gross farm revenue per hectare (GFR/ha). However, earnings before tax per hectare (ETB/ha) in Scenario I and Scenario II were 15–25% greater than that of the optimized traditional beef cattle system, respectively. Young beef cattle production increased pasture utilization and farm profitability and increased selling options for finished beef cattle. Therefore, the young beef cattle system is a viable option for farmers and will help to reduce the need to slaughter calves within two weeks of age.

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“…This is because females reach mature weight sooner than males and start depositing fat earlier, whereas males have increased muscle deposition (Doyle et al, 2021). Blanco et al (2020) evaluated steers and heifers and found no difference in weight gain or fat thickness between sexes, probably because animals were purebred Canchim, which is characterized by low-fat deposition. In the present study, males were castrated only at 15 months of age, which allowed the action of male hormones on muscle development.…”

Section: Dm)mentioning

confidence: 99%

“…The sexual condition also influences the carcass and sensory traits of beef cattle. In this respect, heifers and steers are interesting alternatives to produce wellfinished carcasses (Blanco, Ripoll, Delavaud, & Casasús, 2020). This study aimed to evaluate the performance, carcass traits, and meat quality of Nellore x Canchim steers and heifers fed diets with increasing linseed oil levels by measuring reductions in meat n-6:n-3 ratio.…”

Section: Introductionmentioning

confidence: 99%

Carcass and beef quality of crossbred cattle fed increasing linseed oil levels

Rosa¹,

Henrique²,

Mota³

et al. 2021

Semina: Ciênc. Agrár.

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Strategies to improve beef nutritional value, mainly fatty acid composition, have been a major goal for the scientific community. The use of different oil contents, mostly those rich in unsaturated fatty acids, can be interesting for cost reduction, as well as cattle performance and meat quality improvements. This study assessed the influence of diets containing increasing linseed oil levels (1.0, 3.8, and 5.2% DM) on performance, carcass traits, and meat quality of feedlot-finished Nellore x Canchim steers and heifers. The experiment was carried out in a randomized block design and arranged in a mixed 3 x 2 factorial scheme. Increasing oil levels linearly decreased dry matter intake (DMI) (P < 0.05) and hence improved feed efficiency (P < 0.05), regardless of sexual condition. A beneficial effect of increasing the inclusion of linseed oil was the reduction DMI. Steers had a higher weight at slaughter (P < 0.05) and heifers had greater backfat thickness (P < 0.05). The concentrations of most fatty acids were changed by the linseed oil levels studied (P < 0.05). Dietary inclusion of linseed oil improved beef quality by reducing (P < 0.05) the n-6:n-3 ratio by 1.3 points per percentage point increase in linseed oil level in the finishing diet of both sexes.

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Performance, carcass and meat quality of young bulls, steers and heifers slaughtered at a common body weight

Cited by 34 publications

References 51 publications

Effect of sex and age on beef cattle meat pH

Effect of sex and age on beef cattle meat pH

Optimization of Profit for Pasture-Based Beef Cattle and Sheep Farming Using Linear Programming: Young Beef Cattle Production in New Zealand

Carcass and beef quality of crossbred cattle fed increasing linseed oil levels

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