Recent studies on the body composition of ruminants

Greenhalgh, J. F. D.

doi:10.1079/pns19860043

Cited by 7 publications

(4 citation statements)

References 35 publications

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“…This means that BB bulls do not only produce more meat at the same slaughterweight, but the energy cost to accrete each kg weight during growth is also much lower. This is in agreement with Greenhalgh [13] who concluded that the most effective way of producing lean meat without excessive fat is to use intact males of late maturing breeds, and to slaughter them while still immature. The BB dm bulls are therefore quite appropriate and efficient for beef production.…”

Section: Unitsupporting

confidence: 80%

Compositional data on Belgian Blue double-muscled bulls$^{1, 2}$

Campeneere¹,

Fiems²,

Paepe³

et al. 2001

Anim. Res.

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-Compositional data of 17 Belgian Blue double-muscled bulls with empty body weight between 276 and 669 kg were analysed. Body composition only changed slowly and linearly within the investigated live weight range. Water, protein, fat and ash in the empty body varied between 65.8 and 72.0%, 18.9 and 21.2%, 3.5 and 9.7% and 3.0 and 4.% respectively. The chemical fat content in the empty body was remarkably low. The percentage of accreted energy as protein always remained higher than 50% of the total accreted energy, which is much higher than generally reported in literature. Caloric values for protein and fat were: 22.91 (± 0.90) MJ . kg -1 and 38.74 (± 1.53) MJ . kg -1 respectively. Carcass protein contained on average (in %) 8.8 Asp, 15.6 Glu, 5.3 Pro, 7.7 Gly, 6.6 Ala, 7.5 Leu, 7.4 Lys and 6.5 Arg, while the protein in the non-carcass parts contained (in %) 8.0 Asp, 12.7 Glu, 8.8 Pro, 15.1 Gly, 8.0 Ala, 6.6 Leu, 5.6 Lys and 7.2 Arg. The protein composition proved to be rather constant for the considered live weight range.

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Section: Unitsupporting

confidence: 80%

Compositional data on Belgian Blue double-muscled bulls$^{1, 2}$

Campeneere¹,

Fiems²,

Paepe³

et al. 2001

Anim. Res.

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“…In view of the uncertainties associated with the use of the several methods for predicting the composition of gain, discussed above, another approach has been developed. It takes account of the information on mainly 'British' breeds of cattle and sheep, and Merino sheep, reviewed by ARC (1980); on 'European' breeds of cattle, and on sheep, reviewed by INRA (1978); and of reports made after the publication of those two monographs, which have been reviewed by Greenhalgh (1986). In addition, Garrett (1987) discussed the relationship between energy metabolism and the amounts of protein and fat deposited in growing cattle.…”

Section: Prediction Of the Composition Of Gain In Growing Animalsmentioning

confidence: 99%

Nutrient Requirements of Domesticated Ruminants

Freer¹,

Dove²,

Nolan³

2007

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Nutrient Requirements of Domesticated Ruminants draws on the most up-to-date research on the energy, protein, mineral, vitamin and water requirements of beef and dairy cattle, sheep and goats. It defines the responses of animals, in weight change, milk production and wool growth, to quantitative and qualitative changes in their feed supply. It has particular application to grazing animals. Factors affecting the intake of feed are taken into account and recommendations are given according to the production systems being used; for instance, the feed intake of a grazing animal is affected by a larger number of variables than a housed animal. Examples of the estimation of the energy and nutrients required for the different production systems are given, as well as the production expected from predicted feed intakes. The interactions between the grazing animal, the pasture and any supplementary feeds are complex, involving herbage availability, diet selection and substitution. To facilitate the application of these recommendations to particular grazing situations, readers are directed to decision support tools and spreadsheet programs. Nutrient Requirements of Domesticated Ruminants is based on the benchmark publication, Feeding Standards for Australian Livestock: Ruminants, published in 1990 by CSIRO Publishing on behalf of the Standing Committee on Agriculture. It provides comprehensive and useful information for graziers, livestock advisors, veterinarians, feed manufacturers and animal nutrition researchers. The recommendations described are equally applicable to animals in feedlots or drought yards.

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“…O termo composição refere-se à composição química de todo o corpo do animal (Greenhalgh, 1986;Teixeira, 2004). Segundo Lofgreen et al (1962) e Medeiros (2001), a composição corporal do animal está relacionada à composição do corpo vazio, obtido pela diferença entre o peso vivo (PV) e peso dos conteúdos do trato gastrintestinal e da bexiga e vesícula.…”

Section: Introductionunclassified

Composição corporal e exigências de energia para ganho de peso de caprinos Moxotó em crescimento

Alves¹,

Carvalho

Batista

et al. 2008

R. Bras. Zootec.

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RESUMO -Utilizaram-se 26 animais da raça Moxotó, machos não-castrados, com peso vivo (PV) médio inicial de 15 kg e 7 a 8 meses de idade, alimentados com dieta contendo 2,6 Mcal de energia metabolizável, com o objetivo de avaliar a composição corporal e as exigências de energia para ganho de peso. Ao início do experimento, seis animais foram abatidos e serviram como referência na estimativa da composição corporal e do peso do corpo vazio (PCVZ) iniciais. O experimento foi conduzido em delineamento inteiramente casualizado, com quatro tratamentos (alimentação à vontade -AV; e 85, 70 ou 55% do consumo observado no grupo com AV) e cinco repetições. Quando o PV dos animais com AV se aproximava de 25 kg, um animal de cada tratamento com restrição alimentar era abatido. Ajustaram-se as equações do logaritmo (log) dos conteúdos corporais de gordura (CCG) e energia (CCE) em função do log do PCVZ. A concentração de água no corpo dos animais experimentais foi baixa, entretanto, as deposições de gordura, proteína e cinzas aumentaram com a maturidade dos animais.Foram observados aumentos de 78,55 para 125,38 g/kg de PCVZ nos conteúdos corporais de gordura e de 1,90 para 2,34 Mcal/kg de PCVZ nos conteúdos corporais de energia com o aumento de 15 para 25 kg no PV dos animais. Verificou-se relação linear positiva entre a composição em energia do ganho em PCVZ (GPCVZ) (Mcal/kg GPCVZ) e o PCVZ. Resposta semelhante foi constatada para os conteúdos de gordura no ganho. Os conteúdos corporais de gordura (g) e energia (Mcal) de caprinos Moxotó aumentam de 14,33 para 22,87 e 0,26 para 0,32 por 100 g de GPCVZ, respectivamente, à medida que aumenta o PCVZ.Palavras-chave: cabras nativas, exigência, gordura, peso do corpo vazio Body composition and energy requirements for weight gain of growing Moxotó goat kidsABSTRACT -Twenty-six Moxotó non-castrated males kids, with average 15 kg BW and 7 to 8 mo old, were fed a diet containing 2.6 Mcal/kg ME were used to evaluate the body composition and energy requirements for weight gain.At the beginning of the experiment, six animals were slaughtered as a reference to estimate initial body composition and initial empty body weight (EBW). While, the remaining animals (four groups of five animals, one for each feeding regime, were distributed to a completely randomized experimental design, with four feeding regime (100% or ad libitum (AL), and 85, 70 or 55% of the intake recorded for the animals from the AL group) and five replications. As the animals from the AL group approached 25 kg BW, an animal from each feeding regime was slaughtered. Logarithm (log) equations body fat (BFC) and energy (BEC) content were fitted on log10 of EBW. The concentration of water in the body of animals was low, however, the deposition of fat, protein and ash content increased with the maturity of animals. There was an IntroduçãoO termo composição refere-se à composição química de todo o corpo do animal (Greenhalgh, 1986; Teixeira, 2004). Segundo Lofgreen et al. (1962) e Medeiros (2001), a composição corporal do animal ...

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Recent studies on the body composition of ruminants

Cited by 7 publications

References 35 publications

Compositional data on Belgian Blue double-muscled bulls$^{1, 2}$

Compositional data on Belgian Blue double-muscled bulls$^{1, 2}$

Nutrient Requirements of Domesticated Ruminants

Composição corporal e exigências de energia para ganho de peso de caprinos Moxotó em crescimento

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