Simulation of the development of adipose tissue in beef cattle.

Sainz, R. D.; Hasting, E.; McNamara, J. P.; Beever, D. E.

doi:10.1079/9780851994499.0175

Cited by 23 publications

(20 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A gordura perirrenal é a primeira a ser depositada, seguida pela intermuscular, pela subcutânea e, finalmente, pela intramuscular. O desenvolvimento do tecido adiposo se dá tanto por hiperplasia (aumento no número de células), quanto por hipertrofia (aumento do tamanho dos adipócitos como resultado do acúmulo de gordura no citoplasma) (Sainz & Hasting, 2000). Quando os animais atingem a fase de terminação, os depósitos de gordura que se desenvolvem mais precocemente (intermuscular, perirrenal e mesentérico) já completam seu desenvolvimento hiperplásico e passam a depositar gordura nos adipócitos já existentes, enquanto os depósitos subcutâneo e intramuscular continuam a recrutar novos adipócitos, ao mesmo tempo em que os preenchem com gordura.…”

Section: Resultsunclassified

Deposição de tecidos e componentes químicos corporais em bovinos Nelore de diferentes classes sexuais

Paulino¹,

Filho²,

Detmann³

et al. 2009

R. Bras. Zootec.

View full text Add to dashboard Cite

RESUMO -Objetivou-se avaliar os efeitos de classe sexual e nível de oferta de concentrado (0,6 e 1,2% do peso vivo) sobre a composição corporal e a deposição dos principais tecidos e constituintes químicos do corpo vazio de bovinos Nelore de diferentes classes sexuais (machos não-castrados, machos castrados e fêmeas). Foram utilizados 35 animais, alimentados individualmente durante 112 dias e abatidos. Um grupo-referência foi abatido ao início do experimento, com peso inicial médio de 338 kg (machos não-castrados); 308 kg (machos castrados) e 287,5 kg (fêmeas). Os pesos corporais iniciais e de abate ao final do experimento foram, respectivamente, de 345,3 e 435,0 kg para os machos não-castrados; 328,3 e 396,0 para os machos castrados; e 303,9 e 372,0 kg para as fêmeas. A participação da gordura visceral e subcutânea em relação ao peso de corpo vazio total nas fêmeas foi maior, apesar de as taxas de deposição de gordura não terem sido influenciadas pela classe sexual.O nível de oferta de concentrado não afetou a composição corporal de bovinos Nelore. Machos não-castrados apresentaram maior e menor conteúdo de proteína e gordura, respectivamente, no corpo vazio e no ganho de peso de corpo vazio, em relação aos machos castrados e às fêmeas. A taxa de deposição de proteína no corpo vazio foi maior nos machos não-castrados em relação às fêmeas e aos machos castrados, enquanto a taxa de deposição de gordura corporal não diferiu entre as classes sexuais.A classe sexual afeta a deposição dos constituintes do corpo vazio de bovinos Nelore. The percentage of visceral and subcutaneous fat in the empty body weight was greater in the heifers, although the fat deposition rates were not influenced by gender. The concentrate allowance level did not affect the body composition of Nellore cattle. Bulls had greater and lower protein and fat content, respectively, in the empty body and in the empty body gain than the steers and heifers. The protein deposition rate in the empty body was greater for the bulls compared to the heifers and steers, while the fat deposition rate did not differ among the genders. Gender affects the deposition of carcass and empty body constituents of Nellore cattle.Key Words: beef cattle, body composition, fat, muscle IntroduçãoA composição corporal em bovinos de corte, determinada pela composição química de seus principais componentes, como proteína, gordura, minerais e água, é de extrema relevância para o entendimento da eficiência nos sistemas de produção. Assim, a determinação da composição corporal torna-se de grande importância em R. Bras.

show abstract

Section: Resultsunclassified

Deposição de tecidos e componentes químicos corporais em bovinos Nelore de diferentes classes sexuais

Paulino¹,

Filho²,

Detmann³

et al. 2009

R. Bras. Zootec.

View full text Add to dashboard Cite

show abstract

“…Subsequent additions include a description of partitioning of fat between fat depots in the body (e.g. subcutaneous, intermuscular, visceral and intramuscular) Sainz and Hasting, 2000). To predict industry relevant fat deposition from the DGM the quantity of total body fat is used to estimate subcutaneous fat, which in turn is converted to millimetres of fat thickness at the 12/13th rib site (McPhee et al, 2008) and to millimetres of fat thickness at the P8 site after taking sex, breed type and live weight into consideration .…”

Section: Original Developmentmentioning

confidence: 99%

Development of the BeefSpecs fat calculator: a tool designed to assist decision making to increase on-farm and feedlot profitability

Walmsley¹,

Oddy²,

McPhee³

et al. 2011

Chan, F., Marinova, D. And Anderssen, R.S. (Eds) MODSIM2011, 19th International Congress on Modelling and Simulation.

View full text Add to dashboard Cite

The BeefSpecs fat calculator combines data from beef cattle growth-path studies with the extensive body of knowledge within animal growth and body composition models to predict body composition of cattle. It uses easy to obtain on-farm measurements to assist beef producers make management decisions to better achieve domestic and international market specifications. To facilitate uptake, it makes explicit use of practical end-user knowledge of cattle and production systems that can be translated for incorporation into the underpinning research models and output is returned in producer language.The simple interface of BeefSpecs has been refined and developed to be used in a structured manner.• Its primary use is as an educational tool to demonstrate the relationship(s) between management actions and the performance of groups of animals, • The next level of use is to facilitate refined animal management on-farm by assisting drafting decisions to create sub-groups of animals according to expected performance, and in its final form, • It will be used to optimise feeding and marketing decisions to increase profitability in both feedlots and pasture finishing systems.

show abstract

“…In the finishing phase, lipocytes that have been developed earlier (intermuscular, perirenal and mesenteric) complete their hyperplasic development and become depots for fat. However, subcutaneous and intramuscular deposits continue to produce new adipocytes, as they accumulate fat (Sainz & Hasting, 2000). In addition, similarly to bones and adipose tissue, muscle tissue also grows allometrically.…”

Section: Ad Libitummentioning

confidence: 99%

“…In addition, fat deposition occurs differently in the different parts of the body of the animal (Berg & Butterfield, 1976). Fat deposition in cattle typically follows the order in which perirenal fat is deposited first, followed by intermuscular, subcutaneous and finally by the intramuscular fat (Sainz & Hasting, 2000). As in any other tissue, adipose development occurs both by hyperplasia and hypertrophy.…”

Section: Ad Libitummentioning

confidence: 99%

Carcass traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at maintenance or ad libitum with two concentrate levels in the diet

et al. 2011

View full text Add to dashboard Cite

-This trial was conducted to evaluate the quantitative carcass traits of Nellore, F 1 Simmental × Nellore and F 1 Angus × Nellore steers fed at maintenance level or ad libitum with 1% and 2% of the body weight in concentrate. The animals were allotted to the treatments in a completely randomized experimental design, in a 3 × 3 factorial arrangement. The animals fed the ad libitum diet with more concentrate had greater cold carcass weight, cold carcass yield and longissimus muscle area/ 100 kg of cold carcass weight when compared with animals fed the diet with low concentrate allowance. There was no difference between the ad libitum diets for all of the carcass cuts yields, except for top sirloin. Crossbred animals had cold carcass yield larger than the Nellore animals. F 1 Angus × Nellore animals had greater rib fat thickness and smaller longissimus muscle area/ 100 kg than the F 1 Simmental × Nellore cattle. The yield of commercial carcass cuts was not influenced by genetic group, except for the shoulder clod yield, which was smaller in crossbred animals compared with Nellore animals. The longissimus muscle area, rib fat thickness and rump fat, taken by ultrasound were influenced by the body weight of the animals. Crossbred animals fed diets with higher concentrate level produce carcasses most suitable for the requirements of the market.

show abstract

Simulation of the development of adipose tissue in beef cattle.

Cited by 23 publications

References 0 publications

Deposição de tecidos e componentes químicos corporais em bovinos Nelore de diferentes classes sexuais

Deposição de tecidos e componentes químicos corporais em bovinos Nelore de diferentes classes sexuais

Development of the BeefSpecs fat calculator: a tool designed to assist decision making to increase on-farm and feedlot profitability

Carcass traits of Nellore, F1 Simmental × Nellore and F1 Angus × Nellore steers fed at maintenance or ad libitum with two concentrate levels in the diet

Contact Info

Product

Resources

About