Effects of undegradable protein supplementation on digestion and nitrogen balance in sheep and goats

Jassim, Rafat Al; Hassan, Shaker A.; Al-Ani, A.N.; Dana, T.K.

doi:10.1016/0921-4488(91)90030-t

Cited by 7 publications

(4 citation statements)

References 13 publications

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“…The N outgo in faeces was lower (p<0.05) in LP fed animals in comparison to NP or HP groups. A positive relationship between N intake and its excretion through faeces has been noted by several authors (Al Jassim et al, 1991;Pattanaik et al, 2003). In the present case, however, no such clear-cut pattern was evident except for the lower faeces N excretion upon feeding LP diet, similar to the findings of Patil and Kaur (1994) and Kakkar et al (1991).…”

Section: Balances Of Nutrientssupporting

confidence: 89%

Effect of Dietary Protein Levels on the Performance, Nutrient Balances, Metabolic Profile and Thyroid Hormones of Crossbred Calves

Lohakare¹,

Pattanaik²,

Khan³

2006

Asian Australas. J. Anim. Sci

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An experiment was conducted to study the effect of different dietary protein levels on the performance, nutrient balances, blood biochemical parameters and thyroid hormones of crossbred calves. Thirty crossbred (Bos taurus×Bos indicus) calves aged 3-5 months were divided into 3 equal groups of 10 each and fed graded levels of crude protein, namely 100 (NP), 75 (LP) and 125 (HP) percent of the Kearl recommendations for 105 d. The calves had access to ad libitum oat hay as the basal roughage. A metabolism trial of 6 d duration was conducted at 90 d of the study. Blood collection and its analysis for various hematological and biochemical parameters as well as thyroid hormones was done both during the pre-and post-experimental periods. The fortnightly body weight changes and the net gain did not differ significantly due to dietary variation. The average daily gain was 367±21.6, 347±22.9 and 337±26.4 g in calves fed NP, LP and HP diets, respectively. Averaged across the feeding trial, oat hay intake was higher (p<0.05) in NP animals than HP or LP fed groups. The dry matter (DM) intake showed no significant difference between the 3 groups but the DM digestibility was higher (p<0.05) in the HP fed animals. The digestibility of crude protein, organic matter, crude fiber and nitrogen-free extract was significantly higher (p<0.05) on HP diets compared to LP or NP diets. The calves on all 3 diets were in positive nitrogen (N) balance, however the N retention was higher (p<0.05) in HP than in LP fed calves. The intake and retention of calcium and phosphorus were similar between the treatments. The blood biochemical profile revealed no significant influence of the dietary treatments on hemoglobin, packed cell volume as well as serum levels of glucose, total protein, albumin, globulin, Ca, P, and alkaline phosphatase. Serum levels of the circulating thyroid hormones (T 3 and T 4 ) tended to be lower (p>0.05) on feeding of the LP diet besides showing an increasing trend with the advancement of age. Considering the similar performance and metabolic profile, it could be concluded that crossbred calves can be satisfactorily reared on 25% lower protein level as recommended by Kearl for developing countries, which would not only economize the cost of production but also help to reduce environmental pollution attributable to livestock production.

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Section: Balances Of Nutrientssupporting

confidence: 89%

Effect of Dietary Protein Levels on the Performance, Nutrient Balances, Metabolic Profile and Thyroid Hormones of Crossbred Calves

Lohakare¹,

Pattanaik²,

Khan³

2006

Asian Australas. J. Anim. Sci

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“…decreased N retention observed in goats (Antoniou and Hadjipanayiotou, 1985), but endogenous losses were not measured in our study. In agreement with our results, some (Antoniou and Hadjipanayiotou, 1985;Al Jassim et al, 1991;Isac et al, 1994) have reported reduced N retention in goats than in sheep, although others reported no differences (Gihad, 1976;Jetana, 2005;Molina-Alcaide, 2007, 2008) or greater N retention in goats than in sheep (Bohra, 1980). However, no relation between diet quality and observed interspecies differences could be easily made from the results of these studies.…”

Section: Nitrogen Balancesupporting

confidence: 92%

“…cies (Devendra, 1989). Goats have shown reduced N losses compared with sheep in some studies (Bohra, 1980;Doyle et al, 1984), whereas, in other studies, they showed greater (Antoniou and Hadjipanayiotou, 1985;Al Jassim et al, 1991;Isac et al, 1994) or similar losses (Gihad, 1976;Doyle et al, 1984;Yáñez-Ruiz and Molina-Alcaide, 2007). These contrasting results would indicate that species differences in N use may vary with the diet.…”

Section: Introductionmentioning

confidence: 96%

Urinary excretion of purine derivatives, microbial protein synthesis, nitrogen use, and ruminal fermentation in sheep and goats fed diets of different quality1

Carro

Cantalapiedra-Hijar

Ranilla

et al. 2012

Journal of Animal Science

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The objective of this study was to compare N balance, microbial N flow (MNF) estimated from purine derivatives (PD) urinary excretion, and its variation when estimated using purine bases:N ratios in liquid associated bacteria (LAB) from models reported in the literature (MNF - response models) or measured ratios in liquid and solid-associated bacterial (SAB) pellets (MNF-LAB+SAB), diet digestibility, and rumen fermentation variables in sheep and goats fed 3 different practical, quality diets to study interspecies differences concerning N use as accurately as possible. Four mature female Merino sheep and 4 mature female Granadina goats, each fitted with a ruminal cannula, were used in 3 × 3 Latin square design with an extra animal. Two experimental diets had a forage-to-concentrate ratio of 70:30 (DM basis) with alfalfa hay (ALC) or grass hay (GRC) as forage, and the third diet contained 70% concentrate and 30% alfalfa hay (CAL). All animals were fed the diets at a daily rate of 56 g/kg BW(0.75) to minimize feed selection. Digestibility of nutrients was similar (P = 0.16 to 0.88) in the 2 species, but some animal species × diet interactions (P = 0.01 to 0.04) were detected. There were small differences between the fermentation patterns of both animal species. Goats showed decreased VFA concentrations (P = 0.005) and butyrate proportions (P = 0.04), and greater acetate proportions (P = 0.02) compared with sheep, whereas N intake and percentage of N intake excreted in feces were similar in both species (P = 0.58 and 0.15, respectively), the percentage excreted via the urine was greater in goats compared with sheep (P < 0.001). As a consequence, sheep had greater (P < 0.001) N retention than goats (averaged across diets, 32.6% and 16.1% of N intake, respectively). There were no differences (P = 0.95) between animal species in total PD excretion, but goats showed a greater excretion of allantoin (P = 0.01) and decreased excretion of xanthine (P = 0.008) and hypoxanthine (P = 0.007) compared with sheep. In general, differences between sheep and goats were more pronounced for the medium-quality diet (GRC) compared with those of high-quality diet (ALC and CAL). The greater urinary losses in goats would indicate a greater contribution of goats to N environmental contamination compared with sheep.

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“…Οι αίγες θεωρούνται ότι υπερέχουν των προβάτων στην ικανότητα πέψης τροφών πλούσιων σε ινώδεις ουσίες (Al Jassim et al, 1991). Η μικρή υπεροχή των αιγών έναντι των προβάτων στην πεπτικότητα της τροφής έχει πρακτικό ενδιαφέρον πιθανώς μόνο στις τροφές με πολύ χαμηλή περιεκτικότητα σε ΑΟ, ενώ σε σύγκριση με τις αγελάδες, η πεπτικότητα της τροφής είναι μικρότερη στις αίγες και η διαφορά τείνει να αυξάνεται στις τροφές με χαμηλή περιεκτικότητα σε ΑΟ (Tolkamp and Brouwer, 1993).…”

Section: αποτελέσματα τωνunclassified

Εποχική Και Καθ' Ύψος Διακύμανση Της Χημικής Σύστασης Και Της Θρεπτικής Αξίας Βοσκήσιμης Ύλης Λιβαδιών Της Ηπείρου Και Απεικόνισή Της Σε Γεωγραφικό Σύστημα Πληροφοριών

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Effects of undegradable protein supplementation on digestion and nitrogen balance in sheep and goats

Cited by 7 publications

References 13 publications

Effect of Dietary Protein Levels on the Performance, Nutrient Balances, Metabolic Profile and Thyroid Hormones of Crossbred Calves

Effect of Dietary Protein Levels on the Performance, Nutrient Balances, Metabolic Profile and Thyroid Hormones of Crossbred Calves

Urinary excretion of purine derivatives, microbial protein synthesis, nitrogen use, and ruminal fermentation in sheep and goats fed diets of different quality1

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