Influence of Native Shrubs on Nutritional Status of Goats: Nitrogen Retention

Núñez-Hernández, Gregorio; Holecheck, Jerry L.; Wallace, Joe D.; Galyean, M. L.; Tembo, Ackim; Valdez, Raúl; Cárdenas, M.

doi:10.2307/3899479

Cited by 54 publications

(23 citation statements)

References 15 publications

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“…The net effect of tannins was thus minor. Such perspectives have been reported elsewhere (Nastis and Malechek, 1981;Tanner, 1988;Woodward, 1988;Nunez-Hernandez et al, 1989).…”

Section: Photograph: Shewangizaw Bekelesupporting

confidence: 77%

The Borana Plateau of Southern Ethiopia. Synthesis of Pastoral Research, Development and Change

Scarnecchia¹,

Coppock²

1995

Journal of Range Management

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“…The net effect of tannins was thus minor. Such perspectives have been reported elsewhere (Nastis and Malechek, 1981;Tanner, 1988;Woodward, 1988;Nunez-Hernandez et al, 1989).…”

Section: Photograph: Shewangizaw Bekelesupporting

confidence: 77%

The Borana Plateau of Southern Ethiopia. Synthesis of Pastoral Research, Development and Change

Scarnecchia¹,

Coppock²

1995

Journal of Range Management

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“…Nuňez-Hernandez et al (1989) observed similar DM intakes for Angora goats on a diet containing a high tannin shrub (Juniperus monosperma) compared with goats fed an alfalfa hay diet. Other studies have indicated that plant secondary metabolites (PSM) such as tannins may reduce DMI of forage legumes by decreasing palatability (Reed, 1995).…”

Section: Discussionmentioning

confidence: 74%

Blood profiles of indigenous Pedi goats fed varying levels of <i>Vachellia karroo</i> leaf meal in <i>Setaria verticillata</i> hay-based diet

Brown¹,

Ng’ambi²,

Norris³

et al. 2016

SA J. An. Sci.

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Vachellia karroo (Acacia karroo) is promising fodder for goats in the critical dry season in communal rangelands. The only limitation to the use of this fodder tree is the presence of phenolic compounds, such as condensed tannins. A study was conducted to investigate the effects of tanniniferous V. karroo leaf meal feeding on blood profiles of indigenous Pedi goats fed a basal diet of Setaria verticillata grass hay. Twenty indigenous Pedi goats, weighing 18 ± 2 kg, were allocated in a completely randomized design to five dietary treatments containing V. karroo leaf meal at 20% (S 80 A 20 ), 25% (S 75 A 25 ), 30% (S 70 A 30 ), 40% (S 60 A 40 ) and 50% (S 50 A 50 ) of the total diet in a 22-day trial. Twelve ml of blood were collected from the jugular vein from each goat before and after the experiment for haematological and serum biochemical assays. Daily dry matter intake (DMI) was similar across treatments, ranging from 633 g to 765 g per goat per day. There was no difference in initial and final bodyweights of goats consuming various experimental diets. However, bodyweight gains were significantly higher in goats fed a diet with 50% leaf meal as compared with other treatment groups. There were no differences in haematological indices of Pedi goats except for mean corpuscular haemoglobin (Hb) concentration. Goats fed 50% leaf meal had significantly lower mean corpuscular haemoglobin concentration (MCHC) values as compared with other treatment groups. Similarly, there were no differences in the blood serum chemistry of goats that consumed various inclusion levels of V. karroo, except for serum total protein (TP) and alanine aminotransferase (ALT). Goats fed 50% leaf meal had depressed serum TP, while serum enzyme Alanine aminotransferase (ALT) concentration decreased significantly in goats fed 25% leaf meal as compared with those on the 20% dietary treatment. Tannin concentration of 8.2 g/kg dry matter (DM) had no toxic effect on experimental animals. A 40 % inclusion of V. karroo in a Setaria verticillata hay-based diet may be fed to indigenous Pedi goats without compromising the immunity system and health of the animals. ______________________________________________________________________________________

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“…D. Dearing, personal observations). Juniper has notable levels of PSCs, particularly terpenes and, to a lesser extent, phenolics (Adams et al 1981;Nú ñez-Hernández et al 1989). The limited amount of juniper that N. albigula can consume is largely dictated by PSCs and not nutrient content (Dearing et al 2000;Sorensen et al 2005b).…”

Section: Introductionmentioning

confidence: 99%

Ambient Temperature Influences Diet Selection and Physiology of an Herbivorous Mammal, Neotoma albigula

Dearing¹,

Forbey²,

McLister³

et al. 2008

Physiological and Biochemical Zoology

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The whitethroat woodrat (Neotoma albigula) eats juniper (Juniperus monosperma), but the amount of juniper in its diet varies seasonally. We tested whether changes in juniper consumption are due to changes in ambient temperature and what the physiological consequences of consuming plant secondary compounds (PSCs) at different ambient temperatures might be. Woodrats were acclimated to either 20ЊC or 28ЊC. Later, they were given two diets to choose from (50% juniper and a nontoxic control) for 7 d. Food intake, resting metabolic rate (RMR), and body temperature (T b ) were measured over the last 2 d. Woodrats at 28ЊC ate significantly less juniper, both proportionally and absolutely, than woodrats at 20ЊC. RMRs were higher for woodrats consuming juniper regardless of ambient temperature, and T b was higher for woodrats consuming juniper at 28ЊC than for woodrats eating control diet at 28ЊC. Thus, juniper consumption by N. albigula is influenced by ambient temperature. We conclude that juniper may influence thermoregulation in N. albigula in ways that are helpful at low temperatures but harmful at warmer temperatures in that juniper PSCs may be more toxic at warmer temperatures. The results suggest that increases in ambient temperature associated with climate change could significantly influence foraging behavior of mammalian herbivores.

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Influence of Native Shrubs on Nutritional Status of Goats: Nitrogen Retention

Cited by 54 publications

References 15 publications

The Borana Plateau of Southern Ethiopia. Synthesis of Pastoral Research, Development and Change

The Borana Plateau of Southern Ethiopia. Synthesis of Pastoral Research, Development and Change

Blood profiles of indigenous Pedi goats fed varying levels of <i>Vachellia karroo</i> leaf meal in <i>Setaria verticillata</i> hay-based diet

Ambient Temperature Influences Diet Selection and Physiology of an Herbivorous Mammal, Neotoma albigula

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