Níveis de concentrado na dieta de bezerros

Ribeiro, Marinaldo Divino; Pereira, José Carlos; Bettero, Vítor Pereira; Queiróz, Augusto César de; Costa, Marcone Geraldo; Leonel, Fernando de Paula

doi:10.1590/s1516-35982009000600022

Cited by 2 publications

(2 citation statements)

References 20 publications

(19 reference statements)

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“…Ribeiro et al (2009) In this study, although DMI did not alter, the animals fed diets with 60 and 80% of concentrate showed 17.3and 13.3%, respectively, higher DMI when compared to animalsfed 40% concentrate. Regarding CPI, the lack of effect is related to result obtained for DMI, considering that the diets were isonitrogenous.…”

Section: Resultsmentioning

confidence: 42%

Increasing levels of concentrate digestibility, performance and ingestive behavior in lambs

Parente

Gomes

et al. 2016

Rev. bras. saúde prod. anim.

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SUMMARY The objectives of this research were to determine the effects increasing levels of concentrate on nutrients digestibility, performance, economic viability of diets and ingestive behavior of lambs. Fifteen crossbred lambs were used in a randomized complete block design according to initial body weight and age. Lambs were penned individually during 55 days, being 10 days for adaptation of diets and 45 days for data collection. The treatments consisted in three isonitrogenous diets with increasing levels of concentrate: 40, 60, or 80%, in dry matter basis. No effect (P>0.05) were observed on dry matter intake, crude protein intake, crude protein digestibility and neutral detergent fiber digestibility, whereas the dry matter digestibility was lower (P<0.01) for lambs fed diets with 40% of concentrate. The addition of 80% concentrate decreased (P<0.05) neutral detergent fiber intake, however this treatment provided higher average daily gain, followed by 60 and 40% of concentrate. In relation to feeding behavior, the animals fed80% concentrate spent more time with feeding (P<0.05) compared to the other treatments. It is concluded that supplementation of concentrate between 60 to 80% improves dry matter digestibility and performance of crossbred lambs without relevant affect dry matter intake and ingestive behavior. A diet with 80% concentrate provides positive gross margin of profit.

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Section: Resultsmentioning

confidence: 42%

Increasing levels of concentrate digestibility, performance and ingestive behavior in lambs

Parente

Gomes

et al. 2016

Rev. bras. saúde prod. anim.

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“…The higher the fiber content in the diet, the faster the rumen fill and animal satiation (GERON et al, 2013;RIBEIRO et al, 2009; VAN SOEST, 1994;). This was observed in the present study because DM intake increased with supplementation level, and feed intake was lower in non-supplemented lambs (Table 1).…”

Section: Resultsmentioning

confidence: 99%

Protein-energy supplementation for lambs: feed intake, ingestive behavior, rumen parameters and nutrient digestibility

Silva

Ítavo

et al. 2017

SCA

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The study evaluated the effects of dietary protein-energy supplementation on feed intake, ingestive behavior, rumen parameters and nutrient digestibility in lambs. Four castrated lambs with 31.9 kg mean body weight and fistulated rumen were tested. distributed into latin square design (4x4), four treatments were tested over four periods of time: no supplementation (control) or with supplementation at 8, 16 and 24 g kg -1 body weight. The supplement (soybean meal, soybean hulls, ground corn and minerals) was provided with roughage (Tifton Bermudagrass, Cynodon spp., hay), which was offered ad libitum once a day, at 8h00. In treatments receiving 0 (control), 8, 16 and 24 g kg -1 supplementation, dry matter intake was 685.26, 742.86, 842.51 and 1013.33 g day -1 , crude protein intake was 80.18, 95.98, 118.64, 150.14 g day -1 and metabolizable energy intake 1.55, 1.91, 2.31 and 2.98 g day -1 , respectively. Treatments receiving the highest supplementation levels spent less time with rumination and feeding and rested for longer (P < 0.05). Protein-energy supplementation level did not affect rumen parameters. Average rumen pH was 6.3 and rumen ammonia nitrogen 165 mg dL -1 ; both were affected by sampling time. Supplementation levels until 24 g kg -1 BW improves feed intake and nutrient digestibility linearly and changes ingestive behavior, lowering rumination time without affecting rumen parameters. Key words: Diet. Ammonia nitrogen. Rumen pH. Rumination. Sheep. ResumoObjetivou-se avaliar o efeito da suplementação proteico-energética sobre o consumo, comportamento ingestivo, parâmetros ruminais e digestibilidade de nutrientes em ovinos. Foram utilizados quatro cordeiros castrados, com peso médio de 31,9 kg, fistulados no rúmen. O delineamento foi quadrado latino (4x4), sendo 4 tratamentos e 4 períodos: controle (sem suplementação) e suplementados com 8, 16 e 24 g kg -1 do peso corporal (PC content intake diet, which moves slowly through the gastrointestinal tract, thereby limiting feed intake. Diets containing protein-energy supplements increase total dry matter intake, lowering roughage intake and increasing voluntary nutrient intake, which can improve performance (JOCHIMS et al., 2010). On the other hand, although supplements can attenuate nutritional deficiency arising from poor quality pastures, they may also raise production costs and even make sheep husbandry unfeasible if used in excess (VOLTOLINI et al., 2009). Accordingly, the present study evaluated protein-energy supplementation levels for lambs by assessing their ingestive behavior, rumen parameters and nutrient digestibility.

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Níveis de concentrado na dieta de bezerros

Cited by 2 publications

References 20 publications

Increasing levels of concentrate digestibility, performance and ingestive behavior in lambs

Increasing levels of concentrate digestibility, performance and ingestive behavior in lambs

Protein-energy supplementation for lambs: feed intake, ingestive behavior, rumen parameters and nutrient digestibility

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