Composição corporal e exigências nutricionais de cálcio e fósforo de cordeiros Santa Inês em crescimento

Pérez, Juan Ramón Olalquiaga; Geraseev, Luciana Castro; Santos, Cristiane Leal dos; Bonagúrio, Sarita

doi:10.1590/s0100-204x2001000500012

Cited by 5 publications

(1 citation statement)

References 11 publications

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“…Therefore, reductions in the concentrations of Ca, P and Mg can be attributed to reductions in the proportion of bone tissue in the body of the animal, rather than increased fat deposition. Pérez et al (2001), who studied Santa Inês hair lambs with weights that ranged between 25 and 35 kg of BW, showed that Ca and P values needed for daily gains of 100 to 300 g ranged from 1.63 to 3.48 g Ca and from 0.58 to 1.74 g P. These values were higher than net requirements of the Santa Inês animals determined in this research, and provides evidence that variability can be observed with respect to the nutritional requirements of similar animals. According to Assis et al (2018), estimates of the net Ca and P requirements of several studies conducted in Brazil also showed differences that were up to 100% of the values proposed by the AFRC (1991).…”

Section: Net Requirements For Macrominerals Of Hair Lambsmentioning

confidence: 99%

Mineral requirements for weight gain in growing male Santa Inês and Morada Nova hair sheep

Costa

Silva²,

Medeiros

et al. 2021

Animal Science Journal

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This study estimated the net macro and micromineral requirement from the 48 male uncastrated lambs (24 growing male Santa Inês and 24 growing male Morada Nova hair sheep), with initial weights of 21.7 ± 1.2 kg and 20.8 ± 0.8 kg using the comparative slaughter method. The experimental diet consisted of 30% forage (Buffel—Cenchrus ciliaris (L) hay) and 70% concentrate (corn grain 43.5%, soybean meal 22.0%, vegetable oil 3.0% and mineral supplement 1.5%). The experimental design was a completely randomized with two breeds, four weights, and six replicate. Mineral requirements sufficient to promote weight gain in Santa Inês sheep ranged from 1.75 to 1.03 g Ca, 1.01 to 0.61 g of P, 0.38 to 0.21 g of K, 0.38 to 0.16 of Na, 0.10 to 0.06 Mg, 28.5 to 16.0 mg of Fe, 6.14 to 3.22 mg of Cu, and Zn 23.0 to 14.0 mg/kg per unit of empty body weight (EBW) gain. In the Morada Nova breed, the requirements ranged from 1.96 to 0.84 g of Ca, 1.15 to 0.46 of P, 0.39 to 0.19 of K, 0.28 to 0.13 of Na, 0.10 to 0.05 Mg, 26.2 to 12.9 mg of Fe, 5.59 to 2.46 Cu, and Zn 23.6 to 10.3 mg/kg of EBW gain. Mineral requirements varied mainly in accordance with the proportion of bone mass and fat concentration in the carcass, which were influenced by the slaughter weight of the animals, and therefore should be used in the formulation of dietary mineral supplements.

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Section: Net Requirements For Macrominerals Of Hair Lambsmentioning

confidence: 99%

Mineral requirements for weight gain in growing male Santa Inês and Morada Nova hair sheep

Costa

Silva²,

Medeiros

et al. 2021

Animal Science Journal

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Composição corporal e exigências nutricionais de macrominerais para cordeiros morada nova

Neto

Sobrinho²,

Resende³

et al. 2005

R. Bras. Zootec.

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Este trabalho foi desenvolvido para se determinar a composição corporal e as exigências nutricionais de cálcio (Ca), fósforo (P), magnésio (Mg), sódio (Na) e potássio de ovinos da raça Morada Nova. Foram utilizados 30 cordeiros com peso vivo (PV) médio inicial de 15 kg e 70 dias de idade. Seis cordeiros foram abatidos aos 15 kg, para determinação da composição corporal inicial (animais-referência) pela metodologia do abate comparativo; seis foram abatidos aos 20 kg (abate intermediário) e os demais distribuídos em seis grupos de três animais (um para cada dieta), de acordo com as relações volumoso(V):concentrado(C): 1) 40V:60C; 2) 55V:45C; e 3) 70V:30C. Os animais, em cada grupo, foram abatidos quando o cordeiro que recebia a dieta com maior teor de concentrado atingiu 25 kg de PV. A composição corporal variou de 14,33 a 12,42 g de Ca; 8,12 a 7,15 g de P; 0,47 a 0,46 g de Mg; 1,60 a 1,40 g de Na e de 2,30 a 2,23 g de K por kg de peso de corpo vazio. As exigências líquidas de ganho variaram de 13,54 a 11,74 mg de Ca; 7,96 a 7,02 mg de P; 0,57 a 0,55 mg de Mg; 1,54 a 1,35 mg de Na e de 2,75 a 2,68 mg de K por g de ganho de PV. As exigências dietéticas diárias de macrominerais para cordeiros dos 15 aos 25 kg de PV, ganhando 100 g/dia, variaram de 2,76 a 3,12 g de Ca; 1,91 a 2,95 de g de P; 0,60 a 0,77 g de Mg; 0,60 a 0,86 g de Na e de 1,51 a 2,63 g de K.

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Intake, performance and nutrient digestibility of sheep fed sugarcane treated and ensiled with calcium oxide or urea

et al. 2013

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-The objective of this study was to evaluate intake, performance and nutrient digestibility of sheep supplemented with sugarcane ensiled with four levels of calcium oxide (0.0, 0.8, 1.6 and 2.4%) and urea (1.5%), on a natural matter basis. Twenty castrated Santa Ines lambs with 24.09 kg average weight were housed in individual 1.5 m 2 pens, distributed in a completely randomized design. The diet supplied had a roughage:concentrate ratio of 70:30 and the experimental period lasted 77 days, of which 14 days were used for adaptation to the diet and three 21-day periods for data collection. No differences were observed for the average daily intake of dry matter, ether extract, neutral detergent fiber, neutral detergent fiber corrected for ash and protein, total carbohydrates, hemicellulose and total digestible nutrients. The treatment with urea showed differences for the intake (kg/day) of crude protein, acid detergent fiber and non-fibrous carbohydrates. There was no effect of diets on the digestibility of dry matter, ether extract, neutral detergent fiber, acid detergent fiber or total digestible nutrients, but there was a quadratic effect for total carbohydrates and increasing linear effect for non-fibrous carbohydrates. The calcium intake increased as the levels of calcium oxide in the sugarcane were elevated. The calcium:phosphorus ratio in the silage of calcium oxide was different from the silage with urea and control. No effect was observed for the performance characteristics of sheep. Sugarcane silages with calcium oxide levels of up to 2.4% or with urea do not improve the intake or weight gain of sheep.

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Composição corporal e exigências nutricionais de cálcio e fósforo de cordeiros Santa Inês em crescimento

Cited by 5 publications

References 11 publications

Mineral requirements for weight gain in growing male Santa Inês and Morada Nova hair sheep

Mineral requirements for weight gain in growing male Santa Inês and Morada Nova hair sheep

Composição corporal e exigências nutricionais de macrominerais para cordeiros morada nova

Intake, performance and nutrient digestibility of sheep fed sugarcane treated and ensiled with calcium oxide or urea

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