Energy requirements for maintenance and growth of Canindé goat kids

Souza, Antônio Pereira de; Medeiros, Ariosvaldo Nunes de; Carvalho, Francisco Fernando Ramos de; Costa, Roberto Germano; Ribeiro, Luana; Bezerra, Andreia Batista; Branco, Gustavo Leite Castello; Silva, C.G.

doi:10.1016/j.smallrumres.2014.06.005

Cited by 11 publications

(7 citation statements)

References 11 publications

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“…In goats, Bompadre et al (2014) reported ME m values 69% lower (499.1 vs 294.3 kJ kg -0.75 EBW) and k m values 13% greater in Saanen goats than those obtained here. In addition, Souza et al (2014) reported ME m values for indigenous goats 37.6% lower than those presented here. This variation may also be due to putative differences in maturity degree , supporting the genotype effect on maintenance requirements (NRC, 2007), even within indigenous goats.…”

contrasting

confidence: 85%

“…Thus, sources of variation in ME m may be due to NE m and k m estimates. The estimated value of k m in the present study is within theoretical values for ruminants, from 0.60 up to 0.85; (ALMEIDA et al, 2015a;BOMPADRE et al, 2014;FERREIRA et al, 2015;FIGUEIREDO et al, 2016FIGUEIREDO et al, , 2017LACHICA;AGUILERA, 2003;REID et al, 1980;SOUZA et al, 2014). This wide range of variation may be due to the fact that efficiencies of energy use (k m and k g ) may change according to many factors related to environmental conditions, animal traits, and diet quality (AFRC, 1998;BIRKETT;DE LANGE, 2001;CORBETT;FREER, 2003).…”

supporting

confidence: 81%

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Energy and protein requirements during the growing phase of indigenous goats

Resende¹,

Ribeiro²,

Almeida³

et al. 2018

SCA

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The objective of this study was to investigate both energy and protein requirements for the maintenance and growth of indigenous goats, based on data from two separate studies. Goats were weaned at 79 ± 4.4 days of age, with milk and solid diet intake recorded daily. To determine energy maintenance requirements, 32 kids of 4.90 ± 0.302 kg initial body weight (BW) were used. Ten kids were slaughtered at 5.40 ± 0.484 kg BW to estimate initial body composition, with the remaining kids randomly assigned to one of two DM intake levels: ad libitum and restricted-fed (1.2-times maintenance level). Heat production (HP) was calculated as the difference between ingested metabolizable energy (MEI) and retained energy. Net energy requirement for maintenance (NE m ) was estimated as the β 0 parameter of the relationship between HP and MEI [HP = β 0 × exp]. Metabolizable energy required for maintenance (ME m ) was calculated iteratively, as HP = MEI. Efficiency of energy utilization for maintenance (k m ) was calculated as NE m /ME m . The intercept of the linear regression of retained CP on CP intake was used to calculate net protein requirements for maintenance (NP m ). Net energy and protein requirement for gain (NE g and NP g , respectively) were obtained using 26 kids fed ad libitum and randomly slaughtered at 5.40 ± 0.484 kg BW (n = 10), 15.8 ± 0.655 kg BW (n = 10), and 26.3 ± 1.27 kg BW (n = 6). The first derivative of the allometric equation (used to calculate energy and protein contents in empty body weight (EBW)) with respect to EBW yielded estimates of NE g and NP g . A Monte Carlobased method was employed to simulate variation in ME m , NE g , and NP g . This study indicated that the net energy required for maintenance is 310.1 ± 36.7 kJ kg -0.75 EBW, with ME m estimated at 499.1 ± 52.1 kJ kg -0.75 EBW and k m equal to 0.62. This study indicated that 1.246 g CP kg -0.75 EBW is required by indigenous kids weighing from 5 to 25 kg BW to meet their NP m . In addition, indigenous goats require between 186.6 ± 2.97 and 214.3 ± 12.9 g CP, and between 5.39 ± 1.49 and 9.74 ± 2.57 MJ to gain one kilogram of EBW. This study may contribute to future adjustments in feeding system energy and protein recommendations for indigenous kids. de 2 estudos. Os caprinos foram desmamados com 79 ± 4,4 dias de idade. Ingestão de leite e dieta sólida foi tomada diariamente. Utilizou-se 32 cabritos de 4,90 ± 0,302 kg de peso corporal (PC) inicial. Nesse momento, 10 cabritos foram abatidos para estimativa de composição corporal inicial. Os cabritos remanescentes foram distribuídos aleatoriamente em dois níveis de ingestão: ad libitum ou com ingestão de 20% acima do nível de mantença. A produção de calor (C) foi calculada pela diferença da energia metabolizável (IEM) ingerida e energia retida. A energia líquida para manteça (EL m ) foi estimada pelo parâmetro β 0 da relação entre C e IEM [C = β 0 × exp] . A exigência de energia metabolizável para mantença (EM m ) foi calculada quando C = IEM. A eficiência de utilização de energia para...

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contrasting

confidence: 85%

supporting

confidence: 81%

Energy and protein requirements during the growing phase of indigenous goats

Resende¹,

Ribeiro²,

Almeida³

et al. 2018

SCA

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“…O sistema de exploração predominante da caprinocultura no nordeste do Brasil é o extensivo ou o semi-intensivo, com dependência da vegetação de caatinga e da utilização de animais. Os caprinos nativos, na região, são utilizados para produção de leite e carne, sendo a raça Canindé uma dentre as raças nativas criadas (SOUZA et al, 2014). O desempenho dos animais é influenciado por fatores como o consumo e digestibilidade dos alimentos, assim, o uso de suplementação concentrada na dieta de caprinos em condições de pastejo tem sido empregado para melhorar seu desempenho, de maneira que reduza o tempo de abate, para melhor eficiência de produção do sistema de forma geral.…”

Section: Introductionunclassified

Características da carcaça e componentes não integrantes da carcaça de caprinos Canindé suplementados na caatinga

Souza

Medeiros

Costa

et al. 2015

Rev. bras. saúde prod. anim.

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ResumoObjetivou-se avaliar o efeito da suplementação concentrada sobre o ganho de peso, as características quantitativas da carcaça e dos não constituintes da carcaça de caprinos castrados da raça Canindé em sistema de pastejo na caatinga. 40 caprinos com peso corporal (PC) inicial médio de 15,76 ± 0,96kg foram distribuídos nos níveis de zero; 0,5; 1 e 1,5% de suplementação concentrada (% PC), sendo abatidos quando os animais que recebiam 1,5% de suplementação atingiram peso médio de 23,10 ± 1,74kg. Utilizou-se delineamento inteiramente casualizado com quatro níveis de suplementação e dez repetições. O ganho de peso, rendimento de carcaça, rendimento dos cortes e peso dos constituintes não carcaça (pele, cabeça, sangue, fígado, rins, trato respiratório, trato gastrointestinal), bem como o peso da gordura total, foram influenciados positivamente pelos níveis de suplementação. Os níveis de suplementação um e 1,5% do PC são favoráveis ao desempenho, às características de carcaça e ao desenvolvimento de órgãos em caprinos da raça Canindé em pastejo na caatinga.

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“…Indigenous sheep play an important role in arid and semi-arid areas of the world. Knowledge of nutritional requirements of indigenous sheep (Costa et al, 2013) and goats (Souza et al, 2014) is important for a successful nutrition system because animals fed properly will more efficiently convert the nutrients ingested in product. Indigenous sheep are formed by the crosses involving several native and exotic breeds, however, it is not possible to determine exactly their genetic composition.…”

Section: Introductionmentioning

confidence: 99%

Body Composition and Net Energy Requirements of Brazilian Somali Lambs

Pereira

Fontenele

Silva

et al. 2014

Italian Journal of Animal Science

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The aim of this study was to determine the energy requirements for maintenance (NEm) and growth of 48 Brazilian Somali ram lambs with an average initial body weight of 13.47±1.76 kg. Eight animals were slaughtered at the trials beginning as a reference group to estimate the initial empty body weight (EBW) and body composition. The remaining animals were assigned to a randomised block design with eight replications per block and five diets with increasing metabolisable energy content (4.93, 8.65, 9.41, 10.12 and 11.24 MJ/kg dry matter). The logarithm of heat production was regressed against metabolisable energy intake (MEI), and the NEm (kJ/kg 0.75 EBW/day) were estimated by extrapolation, when MEI was set at zero. The NEm was 239.77 kJ/kg 0.75 EBW/day. The animal's energy and EBW fat contents increased from 11.20 MJ/kg and 208.54 g/kg to 13.54 MJ/kg and 274.95 g/kg of EBW, respectively, as the BW increased from 13 to 28.70 kg. The net energy requirements for EBW gain increased from 13.79 to 16.72 MJ/kg EBW gain for body weights of 13 and 28.70 kg. Our study indicated the net energy requirements for maintenance in Brazilian Somali lambs were similar to the values

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Energy requirements for maintenance and growth of Canindé goat kids

Cited by 11 publications

References 11 publications

Energy and protein requirements during the growing phase of indigenous goats

Energy and protein requirements during the growing phase of indigenous goats

Características da carcaça e componentes não integrantes da carcaça de caprinos Canindé suplementados na caatinga

Body Composition and Net Energy Requirements of Brazilian Somali Lambs

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