scholarly journals Intake, nutrient digestibility, rumen parameters, growth rate, carcase characteristics and cannabinoid residues of sheep fed pelleted rations containing hemp (Cannabis sativa L.) stubble

2021 ◽  
Author(s):  
G L Krebs ◽  
D W De Rosa ◽  
D M White ◽  
B L Blake ◽  
K C Dods ◽  
...  
Keyword(s):  
Cannabis Sativa ◽  
Subcutaneous Fat ◽  
Meat Products ◽  
Live Weight ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Cellulolytic Bacteria ◽  
Low Concentrations ◽  
Kidney Fat ◽  
Feeding Value

Abstract The feeding value and impact of hemp stubble in the diet of ruminants is unknown. Fifteen Merino castrated male sheep were maintained in individual pens and fed one of three pelletised experimental inclusion diets, as a 0% (Control), 28% (Hemp 1), and 56% (Hemp 2) pellet that delivered a diet meeting the nutrient requirements of the animals. Inclusion of hemp stubble had no effect (P > 0.05) on either DM intake, live weight gain or the feed to gain ratio but positively impacted (P < 0.05) on nutrient digestibility. Hemp stubble inclusion increased the concentration (but not molar proportions) of acetic and butyric acids and increased both the concentrations and molar proportions of iso-butyric, iso-valeric, hexanoic and heptanoic acids, possibly due to increased protein digestibility and/or changes in the composition of rumen cellulolytic bacteria. Tetrahydrocannabinolic acid (THCA) was the only cannabinoid found in plasma in the sheep fed the hemp-containing diets, and this was found at very low concentrations (< 16 μg/L). The psychoactive cannabinoid delta-9-tetrahydrocannabinol (Δ 9-THC) was not detected in any plasma samples. THCA was detected in the liver of two sheep fed the Hemp 1 pellets and two sheep fed the Hemp 2 pellets. Cannabidiol (CBD) was detected in the liver of one sheep fed the Hemp 2 pellets (but no liver THCA was detected in this sheep). Δ 9-THC was detected in both the kidney fat and subcutaneous fat of all sheep fed hemp stubble, with the concentrations being higher (P < 0.05) in the sheep fed the Hemp 1 pellets. THCA was also detected in the subcutaneous fat of one of the sheep fed the Hemp 1 pellets. Four of the five sheep fed the Hemp 1 pellet and one of the five sheep fed Hemp 2 pellet had detectable levels of Δ 9-THC in the meat (loin). No other cannabinoids were detected in the meat. Current food standards regulations in Australia prohibit presence of any cannabinoid residues in commercial meat products; thus, determination of a withholding period is required to enable the safe feeding of hemp-stubble to sheep. Further research is also required to gain a greater understanding of the rumen metabolism of cannabinoids.

scholarly journals Zinc and/or Selenium Enriched Spirulina as Antioxidants in Growing Rabbit Diets to Alleviate the Deleterious Impacts of Heat Stress during Summer Season

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 756
Author(s):  
Fawzia Hassan ◽  
Samia Mobarez ◽  
Manal Mohamed ◽  
Youssef Attia ◽  
Aml Mekawy ◽  
...  
Keyword(s):  
Growth Performance ◽  
Antioxidant Status ◽  
Crude Protein ◽  
Ldl Cholesterol ◽  
White Male ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Plasma Total Cholesterol ◽  
Low Concentrations ◽  
Diet Control

Effects of dietary supplemental zinc and/ or selenium enriched spirulina (Zn-Sp, Se-Sp and Zn-Se-Sp, respectively) as antioxidants on growth performance, nutrient digestibility, plasma biochemicals and antioxidant status of growing rabbits under summer conditions were evaluated. A total of 160 New Zealand White male rabbits at six-weeks-old were randomly assigned to four groups. The first group received untreated diet (control). The other groups received diet supplemented with 100 mg Zn-Sp/kg diet, 0.5 mg Se-Sp/kg diet or 100 mg Zn-Sp+ 0.5 mg Se-Sp, respectively. The findings showed that the supplemented diets enhanced growth performance of rabbits at marketing. Rabbits fed Zn-Sp exhibited high dry and organic matter digestibilities while those fed Zn-Sp and Zn-Se-Sp diet supplemented achieved high crude protein digestibility. Rabbits fed diet supplemented with Zn-Se-Sp gave the highest hot carcass weight when competed with their counterparts. Zn-Sp and Zn-Se-Sp supplemented diets tended to promote dressing percentage. Low concentrations of plasma total cholesterol, LDL-cholesterol and VLDL-cholesterol were recorded by Se-Sp and Zn-Se-Sp groups. Rabbits fed Se-Sp, Zn-Se-Sp had the greatest HDL, plasma TAC and catalase and the lowest TBARs. Conclusively, dietary supplementation of 100 mg Zn-Sp, 0.5 mg Se-Sp or their combination could improve growth performance, nutrients digestibility and antioxidant status of heat stressed growing rabbits.

scholarly journals Effect of Breed Types and Castration on Carcass Characteristics of Boer and Large Frame Indigenous Veld Goats of Southern Africa

Animals ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1884 ◽  
Author(s):  
Gertruida L. van Wyk ◽  
Louwrens C. Hoffman ◽  
Phillip E. Strydom ◽  
Lorinda Frylinck
Keyword(s):  
Subcutaneous Fat ◽  
Live Weight ◽  
Intramuscular Fat ◽  
Muscle Area ◽  
Eye Muscle ◽  
Significant Difference ◽  
Kidney Fat ◽  
Pelleted Diet ◽  
The Right ◽  
Boer Goats

Weaner male Boer Goats (BG; n = 36; 21 bucks and 15 wethers) and large frame Indigenous Veld Goats (IVG; n = 41; 21 bucks and 20 wethers) were raised on hay and natural grass ad libitum and the recommended amount of commercial pelleted diet to a live weight between 30 and 35 kg. Carcass quality characteristics (live weight, carcass weights, dressing %, chilling loss and eye muscle area) were measured. The right sides of the carcasses were divided into wholesale cuts and dissected into subcutaneous fat, meat and bone. Large frame Indigenous Veld Goat (IVG) wethers were slightly lighter than the IVG bucks with no significant difference observed between BG. Wethers compared to bucks had higher dressing %, subcutaneous fat % in all primal cuts, intramuscular fat %, kidney fat % and, overall, slightly less bone %. Some breed–wether interactions were noticed: IVG wethers were slightly lighter than the IVG bucks, but the IVG bucks tended to produce higher % meat compared to other test groups. Judged on the intramuscular fat % characteristics, it seems as if wethers should produce juicier and more flavorsome meat compared to bucks.

Some effects of implanted hexoestrol on the growth of steers

1959 ◽  
Vol 53 (3) ◽  
pp. 404-411 ◽  
Author(s):  
E. H. Callow ◽  
D. J. Finney
Keyword(s):  
Growth Rate ◽  
Protein Metabolism ◽  
Subcutaneous Fat ◽  
Rapid Change ◽  
Live Weight ◽  
Optimum Dose ◽  
Control Group ◽  
Kidney Weight ◽  
Depressant Action ◽  
Kidney Fat

1. An experimental test of the effects of 15, 30 and 60 mg. of hexoestrol (ear implants) on growth (over a period of 95 to 98 days) has been carried out in Argentina, using 172 Hereford steers (all 4–5 years old).2. On pasture where the growth rate was only about 0·4 kg. a day, the optimum dose was 30 mg., which gave an extra 0·14 kg. per day.3. The carcasses from the 30 mg. group were significantly heavier by 8 kg., those from the 15 mg. group by 7 kg., but those from the 60 mg. group were only 3 kg. heavier than those from the control group.4. It is suggested that both the poorer response and the lower optimum dose were due to the poorer pastures on which this experiment was carried out.5. Evidence for the carcasses of the treated animals being significantly leaner than the controls was given by the 60 nag. group—the grading was poorer, the excess kidney fat was less, and the subcutaneous fat was thinner.6. Carcass measurements showed differences in the treated groups, but these in general followed the differences in carcass weight.7. Measurements of width of thigh and thorax provided evidence that the depth of carcass had been increased by hexoestrol.8. The incidence of ‘tail raising’ had been increased from 10% in the control group, to 50% and more in the 15, 30 and 60 mg. groups. Carcasses from such animals had a slightly greater width at the thigh.9. The existence of an optimum dose is not thought to be due to restlessness, as indicated by ‘tail raising’, but to a depressant action of hexoestrol on growth. In this connexion, data on the weights of the kidneys show that the 60 mg. dose decreases kidney weight (and implicitly the level of protein metabolism) to the value of the control.10. Evidence was obtained of a rapid change in live weight when the steers were without food. During a single morning this was, on the average, about 13 kg. per animal, followed by a further 25 kg. during the subsequent 24 hr. (see Appendix II).

scholarly journals Performance of weaned male rabbits fed varied levels of dietary fumonisin B1

2021 ◽  
Vol 39 (1) ◽  
pp. 146-152
Author(s):  
E. O Ewuola ◽  
F. A Gbore ◽  
J. T Ogunlade ◽  
G. N Egbunike
Keyword(s):  
Weight Gain ◽  
Crude Protein ◽  
Control Diet ◽  
Fumonisin B1 ◽  
Live Weight ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Daily Weight Gain ◽  
The Mean ◽  
Dietary Treatments

In a six-week feeding trial, a total of 48 crossbred weaned male rabbits of 7 weeks old were randomly allotted to four dietary treatments, with 12 replicates per treatment to determine growth indices and nutrient digestibility of rabbits fed fumonisin-contaminated diets. Maize grains contaminated with fumonisin B1 were incorporated into rabbit diets excluding the control diet (treatment 1, 0.13mgKg-1), at varied inclusion levels of 5.0mgKg-1, 7.5mgKg-1 and 10.0mgKg-1 fumonisin B1, constituting treatments 2, 3 and 4 respectively. The results showed that the average final live weight of rabbits fed treatments 3 and 4 were significantly (P<0.05) lower than those fed treatment 2 and the control. The average daily dry matter intake of the animals fed the dietary treatments was not significantly different. The mean daily weight gain of rabbits fed 5.0mgkg-1, 7.5mgKg-1 and 10.0mgKg-1 however declined significantly (P<0.05) by 91.23, 83.92 and 81.88% respectively, relative to the mean daily weight gain of 12.31g/rabbit/day of animals fed the control diet. The result further showed that digestibility of the nutrients of the experimental diets except crude protein, were similar among the treatments. The crude protein digestibility of rabbits fed 7.5mgKg-1and 10.0mgKg-1 were identical but significantly (P<0.05) lower than those fed 5.0mgKg-1 and the control diet. This suggests inhibition of nitrogen utilization and depressed performance in the animals fed diets containing ≥ 5.0mg fumonisin B1/Kg. Diets containing up to 7.5 mg fumonisin B1/Kg will depress live weight and daily weight gain as a result of reduced protein utilization in weaned rabbits.  

scholarly journals Impact of caecotrophy on the performance, nutrient digestibility and blood parameters of growing rabbits

2021 ◽  
Vol 48 (2) ◽  
pp. 140-147
Author(s):  
S. A. Salami ◽  
O. A. Isah ◽  
R. Y. Aderinboye ◽  
L. O. Ajayi ◽  
S. Ashi
Keyword(s):  
Crude Protein ◽  
Detrimental Effect ◽  
Live Weight ◽  
Protein Digestibility ◽  
Blood Parameters ◽  
Nutrient Digestibility ◽  
Daily Weight Gain ◽  
Feed Conversion ◽  
Serum Biochemical ◽  
Group Serum

A 42-days trial was conducted to investigate the effect of caecotrophy on performance, apparent nutrient digestibility and blood parameters in growing rabbits. Thirty-six cross- bred rabbits with an average initial weight of 875±25 g were divided into 2 groups (collared and uncollared). The collared group was prevented access to their caecotropes (soft faeces) while the uncollared group were allowed access. Each group had 18 animals with 3 growing rabbits per group, replicated 6 times in a completely randomised design (CRD). The result of the study showed that the uncollared group had higher (P<0.05) final live weight, daily weight gain, feed intake which were, 1.76 kg, 17.00 g/day, 50.6 g/day, respectively when compared with the collared group which recorded 1.53 kg, 11.7 g/day and 41.7 g/day respectively. Also, lower (P<0.05) values were recorded for feed conversion ratio and mortality in uncollared rabbits in comparison to their collared counterparts. The ash and crude protein digestibility were higher (P<0.05) in the uncollared group. Serum total protein and albumin were higher in uncollared group while globulin was higher in collared group while Urea and AST was lower in uncollared group. Haematological parameters were not affected by caecotrophy. It can be concluded that prevention of caecotrophy has detrimental effect on the performance, nutrient digestibility and serum biochemical parameters of growing rabbits     Un essai de 42 jours a été mené pour étudier l'effet de la caecotrophie sur la performance, la digestibilité apparente des nutriments et les paramètres sanguins chez les lapins en croissance. Trente-six lapins croisés d'un poids initial moyen de 875±25 g ont été divisés en 2 groupes (à collier et non-collier). Le groupe à collier a été empêché d'accéder à leurs caecotropes (excréments mous) tandis que le groupe non collier a été autorisé à y accéder. Chaque groupe avait 18 animaux avec 3 lapins en croissance par groupe, répliqués 6 fois dans un design complètement randomisé (CRD). Le résultat de l'étude a montré que le groupe non collier avait un poids réel final plus élevé (P<0.05), un gain de poids quotidien, une consommation d'aliments qui étaient de 1.76 kg, 17.00 g/jour, 50.6 g/jour, respectivement par rapport au groupe à collier qui enregistrait respectivement 1.53 kg, 11.7 g/jour et 41.7 g/jour. De plus, des valeurs inférieures (P<0.05) ont été enregistrées pour le ratio de conversion des aliments et la mortalité chez les lapins noncollier par rapport à leurs homologues à collier. La digestibilité des cendres et des protéines brutes était plus élevée (P<0.05) dans le groupe noncollared. La protéine totale de sérum et l'albumine étaient plus élevées dans le groupe noncollier tandis que la globulin était plus élevée dans le groupe collier tandis que l'urée et l'AST étaient plus bas dans le groupe noncollier. Les paramètres hématologiques n'ont pas été affectés par la caecotrophie. On peut conclure que la prévention de la caecotrophie a un effet néfaste sur la performance, la digestibilité des nutriments et les paramètres biochimiques sériques des lapins en croissance

scholarly journals Effect of organic acid treated diets on growth, apparent nutrient digestibility and faecal moisture of broiler chickens

2021 ◽  
Vol 43 (2) ◽  
pp. 218-223
Author(s):  
E. K Ndelekwute ◽  
E. D Assam ◽  
P. C Ekere ◽  
U. E. Ufot
Keyword(s):  
Organic Acids ◽  
Organic Acid ◽  
Broiler Chickens ◽  
Live Weight ◽  
Basal Diet ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Randomized Design ◽  
Dietary Treatments ◽  
Daily Gain

An experiment was conducted to determine the effect of four organic acids (acetic, butyric, citric and formic acids) inclusion in the diets of broilers on growth, nutrient digestibility and faecal moisture. One hundred and fifty one day old Arbor-Acre - plus chicks were used. There were five dietary treatments. Basal diet which served as control contained no organic acid was formulated, while diets 2, 3, 4 and 5, respectively contained 0.25% acetic, butyric, citric and formic acids formed by adding 0.25% of each acid to the basal diet. Each treatment was replicated three times with 10 birds per replicate, arranged in completely randomized design (CRD). Diets were both isocaloric and isonitrogenous. The experiment lasted for 4 from the fourth to the eight week. Feed and water were given ad libitum. There were no significant differences (P>0.05) in live weight, daily gain, feed intake, feed: gain ratio and protein efficiency ratio. Acetic acid significantly (P<0.05) increased water intake. Fecal moisture was significantly reduced by citric and butyric acids. Higher crude protein digestibility was achieved by butyric acid (69.98%) citric (69.67%) and formic acid (71.33%) than the control (63.75%). Digestibility of CF, EE and ash was significantly (P<0.05) higher in all the organic acid groups. Feeding of diets treated with 0.25% of the test organic acids at the finisher phase, in that despite improved digestibility of nutrients the practice should not be encouraged for reasons of insignificant growth performance.

scholarly journals Effect of organic acid treated diets on growth, apparent nutrient digestibility and faecal moisture of broiler chickens

2021 ◽  
Vol 43 (1) ◽  
pp. 218-225
Author(s):  
E. K. Ndelekwute ◽  
E. D. Assam ◽  
P. C. Ekere ◽  
U. E. Ufot
Keyword(s):  
Organic Acids ◽  
Organic Acid ◽  
Broiler Chickens ◽  
Live Weight ◽  
Basal Diet ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Randomized Design ◽  
Dietary Treatments ◽  
Daily Gain

An experiment was conducted to determine the effect of four organic acids (acetic, bubric, citric and formic acids) inclusion in the diets of broilers on growth, nutrient digestibility and faecal moisture. One hundred and fifty one day old Arbor-Acre-plus chicks were used. There were five dietary treatments. Basal diet which served as control contained no organic acid was formulated, while diets 2, 3, 4 and 5, respectively contained 0.25% acetic, butyric, citric and formic acids formed by adding 0.25% of each acid to the basal diet. Each treatment was replicated three times with 10 birds per replicate, arranged in completely randomized design (CRD). Diets were both isocaloric and isonitrogenous. The experiment lasted for 4 from the fourth to the eight week. Feed and water were given ad libitum. There were no significant differences (P>0.05) in live weight, -daily gain, feed intake, feed: gain ratio and protein efficiency ratio. Acetic acid significantly (P<0.05) increased water intake. Fecal moisture was significantly reduced by citric and butyric acids. Higher crude protein digestibility was achieved by butyric acid (69.98%) citric (69.67%) and formicucid (71.33%) than the control (63.75%). Digestibility of CF, EE and ash was significantly (P<0.05) higher in all the organic acid groups. Feeding of diets treated with 0.25% of the test organic acids at the finisher phase, in that despite improved digestibility of nutrients the practice should not be encouraged for reasons of insignificant growth performance.

scholarly journals Effects of Feed Particle Size and Hydro-Thermal Processing Methods on Starch Modification, Nutrient Digestibility and the Performance and the Gastrointestinal Tract of Broilers

Animals ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 294 ◽  
Author(s):  
Wendy Liermann ◽  
Mandy Bochnia ◽  
Andreas Berk ◽  
Verena Böschen ◽  
Liane Hüther ◽  
...  
Keyword(s):  
Particle Size ◽  
Thermal Processing ◽  
Body Weight Gain ◽  
Protein Digestibility ◽  
Nutrient Digestibility ◽  
Processing Methods ◽  
Beneficial Effects ◽  
Starch Modification ◽  
Pelleted Feed ◽  
Feeding Value

Influences of feed particle size (coarse, fine) and hydro-thermal processing methods (HTPM) (without–non-compacted feed, pelleting, expanding and pelleting) on feeding value and the performance and digestive tract of 624 broilers were studied. HTPM increased the starch disintegration of feed. Starch disintegration and electron microscopy indicated the highest degree of starch modification in expanded and pelleted feed. HTPM affected ether extract digestibility (p < 0.05). A grinding-by-HTPM interaction was found in case of crude protein digestibility (p = 0.008). Non-compacted feed reduced daily feed intake (DFI) and body weight gain and increased the feed to gain ratio compared to compacted feeds (p < 0.001). Compacted feeds increased proventricular size and the risk of Isthmus gastrici dilatation compared to coarsely ground non-compacted feed, except for finely ground expanded and pelleted feed. Finely ground feed reduced proventricular weights compared to coarsely ground feed and pelleted feed compared to other feeds. Non-compacted feed increased gizzard weights compared to compacted feeds. Relationships between proventricular size and Isthmus gastrici dilatation and the DFI were detected. Summarizing, the beneficial effects of pelleted feed were mainly based on the reduction of feed wastage and selection. However, the high DFI caused by pellet feeding is also a main risk factor for proventricular dilatation.

Low glucosinolate full-fat rapeseed meal in the diets of early-weaned piglets

1989 ◽  
Vol 49 (2) ◽  
pp. 317-321 ◽  
Author(s):  
B. P. Gill ◽  
A. G. Taylor
Keyword(s):  
Control Diet ◽  
Live Weight ◽  
Rapeseed Meal ◽  
Weaned Piglets ◽  
Low Concentrations ◽  
Feeding Value ◽  
Bean Meal ◽  
Whole Seed ◽  
Soya Bean Meal ◽  
Dietary Treatments

ABSTRACTThe potential of using low glucosinolate full-fat rapeseed meal (FFR) in the diets of early-weaned piglets was investigated in this experiment. FFR (containing 17 (xmol total glucosinolates and 2·8 mg erucic acid per g of whole seed) was used on an isonitrogenous basis at either 200 g<kg or 400 g<kg to replace full-fat soya-bean meal. Four replicates of three contemporary pen groups of 10 piglets weaned between 3 and 4 weeks of age were randomly allocated at a mean initial weight of 8·41 (s.e. 1·105) kg to the three dietary treatments. The experimental diets were given for 3 weeks. Inclusion of FFR significantly depressed food intake, daily live-weight gain and food conversion. There were no significant differences between the performance of piglets given either 200 or 400 g FFR per kg. Intakes of the diets containing FFR per unit of metabolic body weight as a proportion of the control diet decreased from about 0·85 to 0·75 from the 1st to the last week of the feeding period. This suggested that the acceptability of diets containing FFR decreased with time, possibly due to the presence of unpalatable and perhaps antinutritive factors which may include glucosinolates although present at relatively low concentrations. It was concluded that the feeding value of FFR would need to be improved by development of oilseed rape varieties with much lower levels of glucosinolates.

scholarly journals Processed By-Products from Soy Beverage (Okara) as Sustainable Ingredients for Nile Tilapia (O. niloticus) Juveniles: Effects on Nutrient Utilization and Muscle Quality

Animals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 590
Author(s):  
Glenise B. Voss ◽  
Vera Sousa ◽  
Paulo Rema ◽  
Manuela. E. Pintado ◽  
Luísa M. P. Valente
Keyword(s):  
Nile Tilapia ◽  
Lactobacillus Rhamnosus ◽  
Protein Digestibility ◽  
Nutrient Utilization ◽  
Nutrient Digestibility ◽  
Fish Growth ◽  
Muscle Quality ◽  
Whole Body ◽  
Hypertrophic Growth ◽  
Bifidobacterium Animalis

The apparent digestibility coefficients (ADCs) of differently processed okara meals were assessed in Nile tilapia diets: dried okara not autoclaved (FOK), dried okara autoclaved (AOK), okara hydrolyzed with Alcalase (ALOK) or Cynara cardunculus proteases (CYOK), and hydrolyzed okara fermented with lactic bacteria: Lactobacillus rhamnosus R11 (CYR11OK) or Bifidobacterium animalis ssp. lactis Bb12 (CYB12OK). Okara processing significantly affected nutrient digestibility: dry matter ADC was highest in CYR11OK (80%) and lowest in FOK (40%). The lowest protein digestibility was observed in CYR11OK (72%), and the highest in AOK (97%) and CYOK (91%), evidencing the effectiveness of the autoclave and the use of C. cardunculus proteases to increase okara protein bioavailability. The inclusion of up to 20% of AOK or CYOK did not affect fish growth, nutrient utilization, or whole body composition of Nile tilapia. The flesh quality (color, pH, water activity, cohesiveness, elasticity and resilience) was not affected by the dietary incorporation of AOK or CYOK. Fish fed with AOK diets stand out for their high density of muscle fibers, particularly in AOK20, which can explain their high muscle firmness and may result in further hypertrophic growth. Altogether, results suggest that hydrolyzed or autoclaved okara are valuable ingredients for Nile tilapia diets.

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