Desempenho e características da carcaça de novilhos terminados em pastejo rotacionado ou em confinamento

Olmedo, Diego Avilio Ocampos; Barcellos, Júlio Otávio Jardim; Canellas, Leonardo Canali; Velho, Maria Martha Silva; Paniagua, Pedro; Horita, I.; Tarouco, Jaime Urdapilleta

doi:10.1590/s0102-09352011000200012

Cited by 7 publications

(10 citation statements)

References 18 publications

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“…Zebu physical development studies mainly evaluate body weight and average weight gain [16,17,35]. The average daily weight gain of the present study was similar to that described by [35] in Brahman cattle in the same age groups, and higher than the daily weight gain reported in Nellore by [36].…”

Section: Considerations and Practical Applicationsupporting

confidence: 83%

Influence of Testosterone on Body and Testicular Development in Zebu Cattle in the Tropical Climate

Chacur¹,

Arikawa²,

Oba³

et al. 2018

Advances in Testosterone Action

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The Brahman cattle is mainly used for breeding and the meat industry. The present chapter had the objective of evaluating the physical and testicular development, and the serum testosterone level of 8-18 months old male Brahman cattle on grazing weight gaining performance tests. In Bos indicus, puberty usually occurs between the ages of 16 and 18 months. Variables such age, weight, and scrotal circumference were equally important in the estimation of sexual maturity in male Bos indicus. An increase in serum testosterone level occurred between 12 and 14 months of age, followed by testicular and body growth. An elevation in testosterone levels is an indicator that an acceleration in physical and testicular growth is approaching. The variables body weight and scrotal circumference which are important in the estimation of sexual maturity are dependent on testosterone levels in zebu cattle according to literature. It is recommended to calculate body mass index and testicular volume to follow male growth due to the high correlation between these variables.

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Section: Considerations and Practical Applicationsupporting

confidence: 83%

Influence of Testosterone on Body and Testicular Development in Zebu Cattle in the Tropical Climate

Chacur¹,

Arikawa²,

Oba³

et al. 2018

Advances in Testosterone Action

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“…The 14% increase in FW represented an average additional 60 kg in the total weight gain (TWG) for the animals in confinement during the same feeding period, due to their high average daily weight gain (ADG), at an average of 1.37 kg animal -1 day -1 . The ADG of animals in confinement was higher (P<0.05) than that of grazing animals (Table 3), which is consistent with the findings of Menezes et al (2010) and Olmedo et al (2011). Certainly, the low quality of the forage used in the confinement, with lower nutritional quality compared to the pastures (Table 2), did not determine animal performance.…”

Section: Resultssupporting

confidence: 88%

“…This was attributed to the lack of variation in the drip loss (DL) between the feeding systems, with an average of 0.94%. These DL values can be considered inferior to those reported previously (OLMEDO et al, 2011;CRUZ et al, 2015), which in view of the high coefficient of variation (CV=80.88) can be attributed to problems during the weighing process, or in the calibration of the scales, since the scales were in different places inside the slaughtering plant.…”

Section: Resultscontrasting

confidence: 69%

Performance and carcass characteristics of feedlot-finished Zebu cattle in different feeding systems

Neto¹,

Alexandrino²,

Costa³

et al. 2018

SCA

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The performance and characteristics of 18 carcasses of feedlot-finished Zebu cattle were evaluated over 93 days in confinement or semi-confinement systems. In the semi-confinement system, two strategies of pasture deferral were adopted, 40 days (40DD) and 80 days (80DD). The feed of animals in confinement was composed of 24% of grass silage Urochloa spp. and 76% concentrate, on dry matter, freely supplied twice daily. Grazing animals received 4 kg of animal concentrate per day. The final fasting weight of the animals in confinement (534.92 kg) was higher than that of animals semi-confined in 40DD (475.33 kg) and 80DD (460.67 kg) pastures, because of the higher daily weight gain (1.37 vs. 0.82 and 0.64 kg, respectively). Feedlot-finished animals had a greater carcass gain (0.91 kg animal -1 day -1 ), resulting in a higher carcass weight (296.47 kg), higher thickness of external fat (5.42 mm), weight and percentage of side cut (17.88 kg and 12.20%), and weight and percentage of fat in the carcass (74.50 kg and 25.22%). However, no difference was observed for the metric and developmental characteristics of the carcass, which allowed good quality carcasses to be obtained, independent of the strategies evaluated. Feedlotfinished Zebu cattle provide heavier and bulky carcasses, leading to higher revenue per marketed carcass. Key words: Confinement. Fat. Gain yield. Semi-confinement. Trimming. ResumoAvaliou-se o desempenho e as características da carcaça de 18 bovinos anelorados terminados durante 93 dias em confinamento ou semiconfinamento. No semiconfinamento foram adotadas duas estratégias de diferimento da pastagem, com 40 dias (40DD) e 80 dias (80DD). A ração dos animais confinados foi composta de 24% de silagem de capim Urochloa spp. e 76% de concentrado, na matéria seca, fornecida à vontade duas vezes ao dia, enquanto que os animais em pastejo receberam 4 kg de concentrado animal -1 dia -1 . O peso final em jejum dos animais confinados (534,92 kg) foi superior aos semiconfinados em pastagem 40DD (475,33 kg) e 80DD (460,67 kg), devido ao maior ganho de peso diário (1,37 vs. 0,82 e 0,64 kg, respectivamente). Animais terminados em confinamento tiveram maior ganho de carcaça (0,91

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“…The average daily weight gain (ADG) of the present study was similar to that described by Olmedo et al (2011) in Brahman cattle in the same age groups, and higher than the ADG reported in Nellore by Ribeiro et al (2008). The present study showed differences (P <0.05) between 12, 14 and 16 months of age for body weight, and between 12 and 14 months for ADG.…”

Section: Discussionsupporting

confidence: 86%

“…Zebu physical development studies mainly evaluate body weight and average weight gain (LÔBO et al, 2006;PACHECO et al, 2008;OLMEDO et al, 2011). The average daily weight gain (ADG) of the present study was similar to that described by Olmedo et al (2011) in Brahman cattle in the same age groups, and higher than the ADG reported in Nellore by Ribeiro et al (2008).…”

Section: Discussionsupporting

confidence: 81%

Body and testicular development and serum testosterone concentrations in Brahman males

Chacur

Miyasaki

Oba

et al. 2017

SCA

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The present study had the objective of evaluating the physical and testicular development, and the serum testosterone concentration of 8 to 18 months old male Brahman cattle on grazing weight gaining performance tests. Bovine cattle (n=40), aged 259.76 ± 26.15 days and weighing 239.71 ± 33,94kg had the following characteristics evaluated every 56 days, corresponding to 8, 10, 12, 14, 16, and 18 months of age (six different data collections): body weight (BW), scrotal circumference (SC), girth (G), height at the withers (WH), body length (BL), body mass index (BMI), right and left testicular length (RTL and LTL, respectively), right and left testicular height (RTH and LTH, respectively), average daily weight gain (ADG), testicular volume (TV), and serum testosterone (ST).Analysis of variance and Tukey's test at 5% probability were used. Correlations between variables were assessed using Pearson's method at 5% confidence. There was significant difference (P < 0.05) from 12 months of age onwards for ADG and ST. There were differences (P < 0.05) for: BW, SC, G, WH, BL, BMI, RTL, LTL, RTH,and TV from 14 months of age. There was a positive correlation between: ST x G (r=0.38; P < 0.01); ST x WH (r=0.38; P < 0.01); ST xRTH (r=0.23; P < 0.05); ST x LTH (r=0.21; P < 0.01); ST x TV (r=0.22; P < 0.008); TV x weight (r=0.70; P < 0.01); TV x SC (r=0.90; P < 0.01); and TV x BMI (r=0.93; P < 0.01). A rapid increase in serum testosterone concentration occurred between 12 and 14 months of age, followed by rapid body and testicular growth. An elevation in testosterone levels is an indirect indicator that an acceleration inphysical and testicular growth is approaching. It is recommended to calculate both BMI and TV to follow cattle growth due to the high correlation between these variables.

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Desempenho e características da carcaça de novilhos terminados em pastejo rotacionado ou em confinamento

Cited by 7 publications

References 18 publications

Influence of Testosterone on Body and Testicular Development in Zebu Cattle in the Tropical Climate

Influence of Testosterone on Body and Testicular Development in Zebu Cattle in the Tropical Climate

Performance and carcass characteristics of feedlot-finished Zebu cattle in different feeding systems

Body and testicular development and serum testosterone concentrations in Brahman males

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