Regime alimentar para ganho compensatório de ovinos em confinamento: desempenho produtivo e morfometria do rúmen e do intestino delgado

Nóbrega, Giovanna Henriques da; Cézar, Marcílio Fontes; Sousa, Otávio Brilhante de; Filho, José Morais Pereira; Sousa, Wandrick Hauss de; Cunha, M. G. G.; Cordão, Maiza Araújo; Ferreira, Rayanna Campos; Santos, José Rômulo Soares dos

doi:10.1590/1678-6812

Cited by 3 publications

(1 citation statement)

References 21 publications

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“…Thus, refeeding with increased nutrient availability in the groups mentioned above led to an increase in intestinal absorption area due to the availability of nutrients in order to try a greater absorption from a larger area of contact with food. Nóbrega et al (2014) working with Santa Inês sheep subjected to increasing levels of feed restriction followed by refeeding observed that the intestinal villi area increased, linearly, when the level of previous restriction was increased, probably in the attempt of increasing the absorption surface, since the small intestine seems to adapt to satisfy the nutritional needs of the animal. This work would address the need to increase nutrient demand (Zitnan et al 2008), and compensate for the low intake of these elements by lambs during the previous restriction period, since a smaller area of villi would imply less enzymatic activity, digestibility, and nutrient absorption (Arruda et al 2008).…”

Section: Discussionmentioning

confidence: 99%

Performance and ruminal and intestinal morphometry of Santa Inês sheep submitted to feed restriction and refeeding

Lima

Costa²,

Silva

et al. 2022

Trop Anim Health Prod

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A study was carried out to evaluate the performance and ruminal and intestinal morphology of Santa Inês sheep subjected to feed restriction followed by refeeding. A total of 40 uncastrated lambs with an approximate age of 120 ± 15 days and mean body weight (BW) of 17.04 ± 1.18 kg were randomly divided into two groups of BW (20 and 25 kg of BW), which were subjected to different levels of feed restriction (0%, 25%, and 40% of feed restriction). For performance variables, six treatments were considered (0, 25%, and 40% of feed restriction for both groups (20 and 25 kg of BW)) and five treatments for morphometric variables (ad libitum, 25% and 40% for both groups (20 and 25 kg of BW)). All animals were slaughtered with 14 weeks of experimentation. During the feed restriction phase, the dry matter intake (DMI), feed efficiency (FE), and average daily gain (ADG) decreased (P < 0.05) as the level of restriction increased. During the refeeding phase, lambs with 20 kg of body weight subjected to restriction presented lower (P < 0.05) DMI in the ad libitum treatment. However, lambs with 25 kg of body weight under feed restriction presented DMI, FE, and ADG similar (P > 0.05) to the group ad libitum. The final body weight of restricted lambs after refeeding (both groups 20 and 25 kg of body weight) was lower (P < 0.05) than lambs feed ad libitum. In relation to morphology, restricted lambs showed greater height ruminal papillae and larger (P < 0.05) area of ruminal absorption and intestinal absorption, especially the lambs under treatment 40% of feed restriction. The feed restriction followed by refeeding in sheep provided partial compensatory gain, in addition, caused morphological changes in the rumen and intestine that allowed greater absorption and possibly compensatory gain in periods of greater refeeding.

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Section: Discussionmentioning

confidence: 99%

Performance and ruminal and intestinal morphometry of Santa Inês sheep submitted to feed restriction and refeeding

Lima

Costa²,

Silva

et al. 2022

Trop Anim Health Prod

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Aspectos econômicos do uso da parte aérea in natura de mandioca (Manihot esculenta Crantz) para nutrição de cordeiros confinados e semiconfinados

Pereira

Ítavo

Mateus

et al. 2018

Arq. Bras. Med. Vet. Zootec.

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Performance, gastrointestinal morphometry, carcass and non-carcass traits in sheep finished on diets containing canola (Brassica napus L.)

Carneiro

Goes

Sabedot

et al. 2021

Acta Sci. Anim. Sci.

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The objective of this study was to evaluate performance, gastrointestinal morphometry, carcass, and non-carcass traits in lambs finished on different levels of canola grain in the diet. Twenty-seven Santa Ines lambs with an average initial weight of 19.33 ± 1.39 kg were given different levels of canola grain in the diet: 0, 8, and 16%. Weights and body condition scores were determined at the beginning, every 14 days and at the end of the experimental period. Animals were slaughtered to assess gastrointestinal morphometry, carcass and non-carcass traits. The statistical design used was completely randomized. The inclusion of canola grain showed a linear effect (0.723) for the width and height of ruminal papillae in the ventral region of the rumen. Intestinal villi and crypts showed a quadratic effect, with peaks of 0.62 µm and 0.43 µm, with the inclusion of 8 and 16%, respectively. When evaluating carcass traits, a decreasing linear effect was found for hot and cold carcass yield with 16% inclusion of canola. Canola grain can be used as an alternative in diets for finishing sheep up to 8% inclusion in the diet without affecting performance, ruminal and intestinal histometry, carcass, and non-carcass traits.

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Regime alimentar para ganho compensatório de ovinos em confinamento: desempenho produtivo e morfometria do rúmen e do intestino delgado

Abstract: Regime alimentar para ganho compensatório de ovinos em confinamento: desempenho produtivo e morfometria do rúmen e do intestino delgado

Cited by 3 publications

References 21 publications

Performance and ruminal and intestinal morphometry of Santa Inês sheep submitted to feed restriction and refeeding

Performance and ruminal and intestinal morphometry of Santa Inês sheep submitted to feed restriction and refeeding

Aspectos econômicos do uso da parte aérea in natura de mandioca (Manihot esculenta Crantz) para nutrição de cordeiros confinados e semiconfinados

Performance, gastrointestinal morphometry, carcass and non-carcass traits in sheep finished on diets containing canola (Brassica napus L.)

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