Net protein and energy requirements for weight gain of Santa Inês and Morada Nova sheep

Costa, Roberto Germano; Lima, Hugo Batista; Medeiros, Ariosvaldo Nunes de; Cruz, George Rodrigo Beltrão da; Peixoto, Maria G.L.; Silva, Juscelino K.B.

doi:10.1016/j.livsci.2018.04.011

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…With the exclusion of the second week, where the Td-diet showed better FC, no differences were observed between diets in the remaining weeks of the study. The FC values observed in the present study were greater (3.8 to 5.6 g g -1 ) than those reported by Costa et al (2018) using Santa Inés and Morada Nova lambs (4.3 to 4.8 g g -1 ). The weight of these lambs ranged between 25 and 31 kg, very similar to that of the preset study.…”

Section: Resultscontrasting

confidence: 87%

“…In the other weeks, no differences (P>0.05) in FI were observed between diets (Table 3). To this respect, Costa et al (2018) while investigating the requirements of energy and protein for weight gain and carcass quality of lambs (Santa Inés and Morada Nova, 28 to 31 kg BW), reported a FI of 1 kg day -1 , a value lower than that found in this study (FI>1, for both diets, every week). Furthermore, Ma et al (2019) evaluating the growth and nutrient utilization of Dorper lambs and their crosses (average initial BW of 28.3 kg), found a FI of 1.2 to 1.3 kg day -1 , values similar to those obtained in the present study (Table 3).…”

Section: Resultscontrasting

confidence: 84%

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Use of Tithonia diversifolia (hemsl.) A. Gray in the diet of growing lambs

Cadena-Villegas

Martínez-Maldonado

Sosa-Montes

et al. 2020

Arq. Bras. Med. Vet. Zootec.

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Two assays were conducted to study the Tithonia diversifolia (Td) plant: (1) chemical analysis and in vitro dry matter digestibility (IVDMD) of plant parts and (2) productive performance of lambs fed a traditional diet or a Td diet (30% of Td plus 70% of the traditional diet). The plant parts studied were leaves (L), leaves and petioles (LP); and leaves, petioles and stems (LPS). Feed intake, weight gain and feed conversion were registered weekly during five weeks of experimentation. The L showed higher (P<0.05) crude protein content (26.7%) than LP and LPS (25.5 and 19.7%, respectively). Crude fiber (11.2%), neutral detergent fiber (45.4%), cellulose (16.9%) and hemicellulose (33.5%) were lower in L than in LP (12.5, 46.7, 18.0 and 35.7%, respectively) and LPS (22.6, 59.2, 27.0 and 43.5%, respectively). The L and LP showed the highest IVDMD (89.2 and 88.2%, respectively vs. 77.2% of LPS). The Td diet resulted in greater feed intake and weight gain and lower feed conversion than the traditional diet. Therefore, Tithonia diversifolia is a forage plant of good quality for lambs which does not affect the productive performance.

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Section: Resultscontrasting

confidence: 87%

Section: Resultscontrasting

confidence: 84%

Use of Tithonia diversifolia (hemsl.) A. Gray in the diet of growing lambs

Cadena-Villegas

Martínez-Maldonado

Sosa-Montes

et al. 2020

Arq. Bras. Med. Vet. Zootec.

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“…Animals were identified and housed in individual pens with concrete floors (1.0 m Â 2.20 m) and provided ad libitum access to fresh water. The types of animals and experimental management practices used were in accordance with those described in Costa et al (2018).…”

Section: Location Animal Care and Management Descriptionmentioning

confidence: 99%

“…Animals of different genotypes possess different nutritional requirements due to differences in their body compositions (Pereira et al, 2017; Teixeira et al, 2015). These differences result from a combination of genetic environmental conditions in which phenotypic expression of a given genotype (Wiseman & Mahan, 2010) and knowledge of these requirements contribute to the adaptability of animals and facilitate the adoption of management practices such as concentrated and mineral supplementation, which directly influence the weight at which the animals can be slaughtered and marketed (Assis et al, 2018; Costa et al, 2018).…”

Section: Introductionmentioning

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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Meat quality in ewes submitted to reduction in water supply

Araújo

Magalhães

et al. 2022

Small Ruminant Research

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Net protein and energy requirements for weight gain of Santa Inês and Morada Nova sheep

Cited by 7 publications

References 12 publications

Use of Tithonia diversifolia (hemsl.) A. Gray in the diet of growing lambs

Use of Tithonia diversifolia (hemsl.) A. Gray in the diet of growing lambs

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

Meat quality in ewes submitted to reduction in water supply

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