Mineral requirements for growth of Moxotó goats grazing in the semi-arid region of Brazil

Araújo, Marcos Jácome de; Medeiros, A. F.; Teixeira, Izabelle Auxiliadora Molina de Almeida; Costa, Roberto Germano; Marques, Carlo Aldrovandi Torreão; Resende, Kléber Tomás de; Melo, Gabriel Maurício Peruca de

doi:10.1016/j.smallrumres.2010.04.021

Cited by 18 publications

(13 citation statements)

References 13 publications

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“…However, Araújo et al. () reported increased mineral content in g/kg EBW for goats weighing 15–25 kg BW.…”

Section: Discussionmentioning

confidence: 98%

“…Regarding sexual maturity, Morada Nova ram hair sheep would be able to reproduce at approximately 8–9 months of age but with lower BW (approximately 28 kg BW) compared to that of other breeds (Somalis Brasileira e Santa Ines). Thus, it is necessary to examine native or naturalized animals, characterized as rustic animals adapted to their original conditions through natural selection and currently considered as valuable genetic material (Araújo et al., ). Knowledge of relevant factors that interfere in the nutrition of these animals must be a priority, whereby in combination with proper knowledge of nutritional requirements and the chemical composition of feed, efficient animal production can be achieved (AFRC, ).…”

Section: Introductionmentioning

confidence: 99%

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Mineral requirements of hair sheep in tropical climates

Pereira

Carmo

Costa

et al. 2016

Animal Physiology Nutrition

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RESUMEN Los ovinos de pelo juegan un papel importante en la producción animal en las regiones tropicales; sin embargo, sus requerimientos nutricionales no se han determinado en la misma medida que los de las razas de lana. Debido a las condiciones ambientales de las regiones tropicales (clima, calidad y disponibilidad de alimentos), es razonable la hipótesis de que los requerimientos de energía metabolizable (EM) y la eficiencia de utilización de la EM pueden ser diferentes entre los ovinos de razas de pelo y de lana. La información disponible en ovinos de pelo muestra una gran discrepancia en cuanto a las necesidades de energía. Con base en datos de la literatura disponible para hembras ovinas, el requerimiento de EM para mantenimiento (EM m) fue de 419±129 kJ/kg PC 0.75 (media ± desviación estándar) y para machos fue 388±123 kJ/kg BW 0.75. El requerimiento de energía neta para la ganancia de peso (EN g) varió de 8.75 a 14.06 kJ/g (11.63±1.86 kJ/g). Las eficiencias de utilización de la EM para el mantenimiento (k m) y la ganancia de peso (k g) fueron de 0.66±0.023 y 0.42±0.044, respectivamente. Esta revisión también indicó que la información es escasa para ovejas adultas en diferentes etapas fisiológicas (mantenimiento, lactancia y gestación). Se requiere más trabajo de investigación con relación a la estimación de las necesidades de energía de los ovinos de pelo, con el fin de hacer ajustes a los modelos existentes de alimentación, con el objetivo de predecir la respuesta de los animales con la condición que prevalece en los trópicos (tipo de animal, medio ambiente y alimentos disponibles). PALABRAS CLAVE: Ovinos de pelo, Requerimientos de energía, ABSTRACT Breeds of hair sheep play an important role in animal production in tropical regions; however, their nutrient requirements have not been determined to the same extent as those of wool breeds. Due to the environmental conditions of the tropical regions (climate, quality and availability of feedstuffs), it is reasonable to hypothesize that energy requirements and efficiency of utilization of metabolizable energy (ME) may be different between hair and wool breeds of sheep. Information available on hair sheep shows a large discrepancy regarding energy requirements. Based on available literature data for female sheep, ME requirement for maintenance (ME m) was 419±129 kJ/ kgBW 0.75 (mean ± standard deviation) and for the male 388±123 kJ/kg BW 0.75. The requirement of net energy for gain (NE g) ranged from 8.75 to 14.06 kJ/g (11.63±1.86 kJ/g). The efficiency of ME utilization for maintenance (k m) and gain (k g) were 0.66±0.02 and 0.42±0.04, respectively. This review indicated also that information is scarce for adult ewes at different physiological stages (maintenance, lactation, or pregnancy). More work is required regarding estimates of nutrient requirements of hair sheep in order to develop adjustments to existing nutrition models to predict animal's response under the conditions prevailing in the tropics (animal type, environment and feedstuffs available).

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“…However, Araújo et al. () reported increased mineral content in g/kg EBW for goats weighing 15–25 kg BW.…”

Section: Discussionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Mineral requirements of hair sheep in tropical climates

Pereira

Carmo

Costa

et al. 2016

Animal Physiology Nutrition

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“…Deposition of fat is very important for breeds in arid and semi-arid zones. In studies with indigenous breeds, some authors also found a large deposition during this stage of the animal's growth curve (Alves et al, 2008a;Araújo et al, 2010).…”

Section: Performance and Body Compositionmentioning

confidence: 92%

“…However, in marketing this product, the greater amount of fat deposited around the viscera indicates that the energy costs will not be commercially rewarded in the carcass weight. The body composition of Moxotó goats in the same weight range but under a grazing regime was also evaluated by Araújo et al (2010) in which the levels of supplementation were tested. The values of constituent fat in the animals fed ad libitum in the present study (in a feedlot regimen) were 25% larger than in grazing castrated indigenous goats with similar body weight and age.…”

Section: Performance and Body Compositionmentioning

confidence: 99%

Energy requirements for maintenance and growth of Canindé goat kids

Souza

Medeiros

Carvalho

et al. 2014

Small Ruminant Research

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“…In this study, we found that when the Zn, Fe, Cu, and Co contents were expressed based on the metabolic weight (mg/kg 0.75 of EBW) (Table 3), a linear increase was observed in response to the increased level of supplementation. This concentration pattern may have been a reflection of the increased mineral intake and weight gain, which led to a better body development of the animals as the increase in BW has been noted as one of the main discriminating factors in body composition (Mahgoub and Lu, 1998;Bellof and Pallauf, 2007;Fernandes et al, 2007;Araújo et al, 2010;Fernandes et al, 2012;Teixeira et al, 2013). Silva et al (2013) observed that trace element concentrations in the empty body of Canindé goats increased as feed intake levels increased.…”

Section: Discussionmentioning

confidence: 94%

Trace mineral requirements for growth of Moxotó goats grazing in the semiarid region of Brazil

et al. 2017

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-A comparative slaughter trial was conducted to estimate the body composition and net requirements of Cu, Zn, Mn, Fe, and Co for growth of castrated Moxotó goat kids, with15.69±0.78 kg initial body weight (BW), grazing in the semiarid region of Brazil. The baseline group consisted of four randomly selected kids (15.37±0.30 kg BW). Thirty-two kids were randomly allocated into eight groups (considered as block), distributed among four levels of concentrate supplementation (0, 0.5, 1.0, and 1.5% BW). Animals in a group were slaughtered when the 1.5% BW treatment kids in the group reached approximately 25 kg BW.

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Mineral requirements for growth of Moxotó goats grazing in the semi-arid region of Brazil

Cited by 18 publications

References 13 publications

Mineral requirements of hair sheep in tropical climates

Mineral requirements of hair sheep in tropical climates

Energy requirements for maintenance and growth of Canindé goat kids

Trace mineral requirements for growth of Moxotó goats grazing in the semiarid region of Brazil

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