Digestibility, ingestive behaviour and performance of non-descript breed hair lambs of different sexual classes subjected to feed restriction

Rodrigues, Rafael Torres de Souza; Chizzotti, Antônio; Martins, Samara Rodrigues; Queiróz, Mário Adriano Ávila; Busato, Karina Costa

doi:10.22358/jafs/65699/2014

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…different sex classes of sheep, averaging 15-35 kg BW [29][30][31]. However, the NRC system considers different nutritional requirements for male and female sheep based on their mature weights, which are not the same.…”

Section: Plos Onementioning

confidence: 99%

‘Meta-analysis of dry matter intake and neutral detergent fiber intake of hair sheep raised in tropical areas’

et al. 2020

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Inadequate estimates of fiber and dry matter intake of sheep raised in tropical conditions may explain part of the inefficiency of those production systems. Therefore, we aimed to estimate dry matter intake (DMI) and neutral detergent fiber intake (NDFI) of hair sheep raised under tropical conditions. A meta-analysis of 61 independent performance experiments, comprising a total of 413 experimental units (treatment means or animals), was performed. Trials were conducted in tropical conditions, using hair sheep in growing and finishing phases and endowed with the following information: neutral detergent fiber (NDF) in diet, initial and final body weight (BW), average daily gain (ADG), DMI and NDFI of treatment means (51 studies) or individual data (10 studies). Data on organic matter and NDF digestibilities were collected to estimate D-value (Dv) and B-value (Bv) (20 and 33 studies, respectively). The equations obtained were: DMI(g/day)=50.5773±71.0504+1.4423±0.1704×ADG+28.4406±2.9697×BW;DMI(g/kgBW)=42.1088±4.7298+0.05516±0.009427×ADG−0.4402±0.1865×BW;NDFI(g/day)=−52.2187±47.7718+1.3773±0.2292×NDF(g/kgDM)−0.0007±0.0002×NDF(g/kgDM)2. DMI (g/kg BW) as a function of Dv (g/kg DM) revealed a quadratic relationship, whose point of maximum DMI (38.69 g/kg BW) was obtained at 634.1 g/kg DM Dv. On the other hand, DMI decreased linearly as Bv (g/kg DM) increased. In conclusion, equations to predict DMI from BW and ADG as well to predict NDFI from dietary NDF were fitted with great accuracy and are recommended for hair sheep raised in tropical regions. DMI values were, in general, greater than those reported by the NRC, AFRC and INRA systems, which may be a reflection of the sheep breeds used in this study. Using Dv and Bv concepts was satisfactory to describe an integrated mechanism between metabolic and bulking regulation of DMI in sheep.

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Section: Plos Onementioning

confidence: 99%

‘Meta-analysis of dry matter intake and neutral detergent fiber intake of hair sheep raised in tropical areas’

et al. 2020

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“…In this perspective, before replacing a diet with an alternate feed, it is of utmost importance to examine parameters such as feed intake, feeding behavior patterns, blood markers, rumen fermentation, and energy estimation. This would provide a better understanding on how to incorporate the feed into the new diet, understand its nutritive value, and thereby optimize animal production (Van Soest, 1994;Eustáquio Filho et al, 2014;Rodrigues et al, 2014;Mendes et al, 2015). Thus, the objective of this study was to evaluate feeding behavior; physiological, hematological, and biochemical parameters; and rumen fermentation parameters in lactating goats fed diets containing P. platycephala pod meal (PP).…”

Section: Introductionmentioning

confidence: 99%

Effects of Parkia platycephala on feeding behavior, rumen health, blood markers, and physiological responses of lactating goats

Batista¹,

Silva²,

Marques³

et al. 2020

Revista Brasileira De Zootecnia

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“…Estudios recientes han mostrado que el comportamiento en el consumo y la digestibilidad en ovinos de lana y en el ganado se afectaron cuando se utilizó la restricción alimenticia para mejorar la utilización de los nutrientes (6,7) . También se ha reportado que la conformación y composición de la canal en ovinos de pelo puede verse afectada por factores como, el sexo y el nivel de alimentación (8) .…”

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Evaluación del consumo de energía metabolizable sobre el contenido energético de la canal en borregas Pelibuey

Chay-Canul

Kú-Vera

Magaña-Monforte

et al. 2017

Rev. Mex. Cienc. Pecu.

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Digestibility, ingestive behaviour and performance of non-descript breed hair lambs of different sexual classes subjected to feed restriction

Cited by 8 publications

References 22 publications

‘Meta-analysis of dry matter intake and neutral detergent fiber intake of hair sheep raised in tropical areas’

‘Meta-analysis of dry matter intake and neutral detergent fiber intake of hair sheep raised in tropical areas’

Effects of Parkia platycephala on feeding behavior, rumen health, blood markers, and physiological responses of lactating goats

Evaluación del consumo de energía metabolizable sobre el contenido energético de la canal en borregas Pelibuey

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