Clinical profile of sheep fed non-conventional feeds containing phenols and condensed tannins

Mahgoub, O.; Kadim, Isam T.; Tageldin, Mohammed H.; Al-Marzooqi, W.; Khalaf, S.Q.; Ali, Ahsan

doi:10.1016/j.smallrumres.2008.05.009

Cited by 67 publications

(56 citation statements)

References 12 publications

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“…Below or above normal calcium, magnesium, and/or phosphorus levels indicate problems with health status of goats (Invartsen and Andersen, 2000). In addition, aspartate aminotransferases (AST), glutamyltransferase (GGT), alkaline phosphatase (ALP), and alanine aminotransferase (ALT), which are enzymes that are mostly produced by the liver (Smith and Sherman, 1994), are also predictive of the health status of goats (Otto et al, 2000;Ikhimioya and Imasuen, 2007;Pierce et al, 2007;Mahgoub et al, 2008). The information obtained from liver enzymes, blood minerals, and faecal egg counts substantiates the physical examination and, coupled with medical history, provides an excellent basis for estimation of severity of cases (Piccione et al, 2010) and treatment of goats (Tibbo et al, 2008).…”

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confidence: 99%

Effect of season and age on blood minerals, liver enzyme levels, and faecal egg counts in Nguni goats of South Africa

Gf¹,

Chimonyo²,

Dzama³

2012

Czech J. Anim. Sci.

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ABSTRACT:The objective of the study was to determine the relationships between age of the goat and faecal egg counts, liver enzymes, and minerals in the wet and dry seasons in male and female Nguni goats of South Africa. Fifty-six female and forty male Nguni goats were used for the study. Faecal and blood samples were collected once in the dry (August) and wet (January) season. Faecal egg counts (FEC) were determined by the modified McMaster technique while trematodes were determined by the sedimentation method. Blood was analyzed for phosphorus, calcium, magnesium, alkaline phosphatase (ALP), alanine transaminase (ALT), creatine kinase (CK), aspartate aminotransferase (AST), and gamma-glutamyltransferase (GGT) levels. Faecal egg counts were significantly higher in the wet compared with the dry season. Most (P < 0.05) of the goats were within the reference values for calcium, phosphorus, and magnesium in both seasons. Phosphorus concentrations were significantly affected by age with higher levels in the young (2.1 ± 0.06) compared to the adult (2.0 ± 0.03) goats. Alkaline phosphate was significantly affected by age with higher levels in young than in mature goats. Higher AST, CK, and GGT concentrations were recorded in the wet compared to the dry season (P < 0.05). Higher CK and AST were recorded in male than in female goats while for ALP, the values were higher in female than in male goats. Linear negative relationships (P < 0.05) existed between age and ALP, phosphorus, and FEC, while quadratic relationships existed between age and strongyles and Strongyloides egg counts. Calcium was linearly related (P < 0.05) to FEC, while CK was related to FEC in a quadratic fashion. Age of the Nguni goats can be used to predict faecal egg counts, phosphorus, and ALP levels.

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confidence: 99%

Effect of season and age on blood minerals, liver enzyme levels, and faecal egg counts in Nguni goats of South Africa

Gf¹,

Chimonyo²,

Dzama³

2012

Czech J. Anim. Sci.

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“…It has been reported that similar levels of condensed tannins in sheep have reduced protein degradation in the rumen and increased protein flow to the intestine [16,17]. There was an indication of these classical effects of tannin-containing feeds in ruminants from a digestibility trial using UTPF with sheep [3]. Higher levels of nitrogen in the faeces indicate lower nitrogen retention, which is a characteristic of dietary tannins, which bind to proteins in the rumen and consequently reduce digestion and absorption in the gut [2,4,5].…”

Section: Discussionmentioning

confidence: 95%

“…The UTPF with its higher fibre content and lower digestibility coefficients resulted in larger volumes of faeces and lower viscosity of gut contents in the sheep, a characteristic of highly fibrous diets [3]. The UTPF also contained higher levels of phenols and condensed tannins, which have been known to have antinutritional effects [2,15].…”

Section: Discussionmentioning

confidence: 99%

“…The NCF feeds usually contain polyphenols and condensed tannins that may cause antinutritional effects [1]. The tannins have been proved to form combinations with proteins in the rumen rendering them unavailable for digestion [2,3]. Tannins interfere with nutrient digestion and promote excretion of endogenous nitrogen in monogastric animals by forming tannin-enzyme complexes [4].…”

Section: Introductionmentioning

confidence: 99%

“…Tannins interfere with nutrient digestion and promote excretion of endogenous nitrogen in monogastric animals by forming tannin-enzyme complexes [4]. Tannins might also cause physical damage to the digestive system and other vital organs such as the kidney and liver [5,6]. Research has indicated different responses to tannin consumption in various animal species.…”

Section: Introductionmentioning

confidence: 99%

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Morphometry of Organs in Sheep Fed a Diet Containing Tannins and Polyphenols

Mahgoub¹,

Inwa

Kadim³

et al. 2017

SQU Journal for Science

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ABSTRACT:The aim of this study was to use morphometry to investigate the essential organs of sheep fed with nonconventional diets. Twelve male Omani sheep were fed with one of two types of roughages supplemented with a commercial concentrate for 63 days and then slaughtered. The volumes of their kidneys, testes, and livers were measured. Random samples from the organs were fixed in formalin and embedded in paraffin. Random five micrometer sections from each block were stained with hematoxylin and eosin. Images from four random fields were taken from each slide using a digital camera attached to the microscope and then loaded onto a stereology software installed on a personal computer. Morphometric measurements of body organs were taken. Animals fed diets containing tannins had lower final total body weight and lower weights and volumes of their livers, testes and kidneys. There was high variability in the results of intestinal parts measurements, but there was a general trend of the treated animals having higher duodenal and ilial height, villus height, crypt depth and epithelial thickness. The only significant diet effect was higher liver l and lower Vfrac cytoplasm in the control animals than in those treated. The only significant treatment effect on the kidney measurements was a higher tube length/density in treated animals. There were no treatment effects on the testes measurements. The current study indicates that sheep may safely utilize diets containing the levels of polyphenols and tannins used here with no drastic effects on the digestive system and vital organs.

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