Ileal and total digestibility studies in pigs fed molasses type A or starch diets supplemented with torula yeast or soybean meal

Figueroa, V.; Maylin, A; Ly, Julio; Pérez, Alina Segredo; Carrillo, Olimpia; Bayley, H. S.

doi:10.1016/0301-6226(90)90048-b

Cited by 4 publications

(4 citation statements)

References 15 publications

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“…The concentration of DM and CP torula yeast used in this experiment was close to values reported for torula yeast (NRC, 2012). However, concentrations of P and Lys, Trp, and Thr in torula yeast that was used in this experiment were slightly greater than values reported in the literature (NRC, 2012), and torula yeast had a greater concentration of DM, GE, CP, and ash than sources of torula yeast previously used in swine and poultry diets (Figueroa et al, 1990;Rodríguez et al, 2011). The main reason for these differences is likely that a lignocellulosic substrate was used to grow the torula yeast used in the present experiment, which may contain different monosaccharides than substrates used to generate other sources of torula yeast.…”

Section: Discussionmentioning

confidence: 55%

“…Torula is a yeast strain that uses xylose and glucose in wood as substrate (Reed and Nagodawithana, 1991) and it has been used in swine diets for decades (Figueroa et al, 1990). Torula yeast derived from lignocellulosic biomass is considered a potential sustainable feed ingredient because of its ability to produce high-value products from low-value substrates without competing with the food industry, and does not depend on land, water, or specific climatic conditions as it is the case for plant-based feed ingredients (Øverland and Skrede, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs

Lagos

Stein

2020

Journal of Animal Science

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Three experiments were conducted to test the hypothesis that the standardized ileal digestibility (SID) of AA, concentrations of DE and ME, and the standardized total tract digestibility (STTD) of P in a source of torula yeast are not different from values obtained in Menhaden fish meal. In experiment 1, six weanling barrows (initial BW: 11.7 ± 0.4 kg) were prepared with a T-cannula in the distal ileum and allotted to a replicated 3 × 3 Latin square design with 3 diets and 3 periods. In each period, there were 5 d of adaptation and 2 d of collection. Two cornstarch-based diets using the torula yeast or fish meal as the sole source of AA and a N-free diet were formulated. The SID of CP and all AA was greater (P < 0.05) in torula yeast than in fish meal. In experiment 2, 24 weanling barrows (initial BW: 14.4 ± 1.1 kg) were individually housed in metabolism crates and allotted to a corn-based diet or 2 diets based on a mixture of corn and torula yeast or corn and fish meal. Feces and urine samples were collected for 4 d following a 5-d adaptation period. There were 8 replicate pigs per diet and fecal and urine materials were collected. Results of this experiment indicated that there were no differences in the concentration of DE and ME (DM basis) between torula yeast and fish meal. In experiment 3, a total of 32 weanling barrows (initial BW: 11.9 ± 1.1 kg) were allotted to 4 diets and 8 replicate pigs per diet. Pigs were placed in individual metabolism crates. The torula yeast or fish meal were used in 2 diets containing either 0 or 500 units of microbial phytase. Feces samples were collected as described for experiment 2. The STTD of P in torula yeast was greater (P < 0.05) than in fish meal, but regardless of ingredient, there was no effect of the inclusion of phytase in the diets. In conclusion, the SID of AA and the STTD of P in torula yeast is greater than in fish meal, but values for the concentration of DE and ME in torula yeast are not different from those in fish meal. Therefore, the torula yeast that was used in the present experiments may be included at the expense of fish meal in diets fed to weanling pigs if the concentration of standardized ileal digestible AA is considered in the formulation.

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Section: Discussionmentioning

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs

Lagos

Stein

2020

Journal of Animal Science

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“…Xandé, Ré gnier, Archimè de, Bocage, Noblet and Renaudeau of SC molasses with a mixture of soluble sugars representative of sugars composition of molasses, Bayley et al (1983) showed a reduced DC of energy with SC molasses. In fact, Figueroa et al (1990) showed that the non-identified OM in SC molasses is poorly digested, which considerably reduces the dietary DE density of this material. In this study, the DC for N was higher than the value reported in the INRA tables (68.1% v. 40.0%; Sauvant et al, 2002).…”

Section: Nutritional and Energy Values Of Final Sc Molassesmentioning

confidence: 99%

Nutritional values of sugarcane products in local Caribbean growing pigs

Xande¹,

Régnier²,

Archimède³

et al. 2010

Animal

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A total of 24 castrated male Creole were used for digestibility studies on three sugarcane (SC) products: final molasses, SC juice and ground SC. Digestibility of macronutrients were determined in three consecutive experimental trials between 35 and 60 kg BW. The first trial measured the effect of a constant rate of incorporation of those SC products in a control diet (23% on a dry matter (DM) basis) on digestibility of energy and nutrients. The second and the third trials were designed to determine the effects of increasing rates of inclusion of SC juice and ground SC in the control diet on the digestibility of nutrients and energy. The DM content of molasses, SC juice and ground SC were 74.3%, 19.3% and 25.8%, respectively. Free sugar contents were 73.8%, 81.6% and 51.5% of DM for molasses, SC juice and ground SC, respectively. In contrast with molasses and SC juice, NDF content of ground SC was very high (40.3% DM). Energy digestibility coefficients (DC) were 99.0% and 83.6% for SC juice and molasses, respectively. For ground SC, amounts and composition of intakes differed from feed allowance as a consequence of chewing-then-spitting out most of the fibrous contents of ground SC. Expressed as a percentage of energy intake and energy allowance, DC of energy for ground SC were 68.6% and 31.9%, respectively. On an intake basis, digestible energy (DE) and metabolisable energy (ME) values were higher for SC juice (17.3 and 17.2 MJ/kg DM, respectively) than for molasses (13.1 and 12.6 MJ/kg DM, respectively) or ground SC (12.3 and 11.8 MJ/kg DM, respectively). On an allowance basis, the corresponding values for ground SC were only 5.7 and 5.6 MJ/kg DM, respectively. The gradual inclusion rate of SC juice in the diet up to 66% resulted in a linear increase of the DC of the diet organic matter and energy (P , 0.001) by 0.10% per 1% in SC juice DM. On the other hand, the partial substitution of the control diet by ground SC up to 74% resulted in a linear (P , 0.05) reduction of digestibility of nutrients and energy. Each 1% increase of ground SC incorporation rate resulted in a 0.13% and 0.61% linear decrease of DC of the energy, expressed as a percentage of energy intake or energy allowance, respectively. In conclusion, our study provides updated energy values of SC products usable as energy sources for feeding pigs.

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“…The TY used here had a DM content similar to that of several previous reports (93.70% to 95.63%; Ringrose, 1949 ; Olvera-Novoa et al, 2002 ; Øverland et al, 2013 ; Lagos and Stein, 2020 ). Figueroa et al (1990) and Ringrose (1949) reported similar ash (8.4% and 8.0%, respectively) but lower CP values (44.9% and 48.5%, respectively), whereas Olvera-Novoa et al (2002) reported greater ash (10.2%) and lower CP (46.11%). Øverland et al (2013) reported lower ash (5.4%), similar CP (56.0%), and greater GE (5110 kcal*kg −1 ) concentrations.…”

Section: Discussionmentioning

confidence: 93%

Evaluation of Torula yeast as a protein source in extruded feline diets

Holt

Aldrich

2022

Journal of Animal Science

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The objective of this work was to evaluate the use of a Torula yeast on diet processing, palatability, and total tract nutrient digestibility in extruded feline diets. Four dietary treatments were compared, differing by protein source: Torula yeast (TY), pea protein concentrate (PP), soybean meal (SM), and chicken meal (CM). Diets were produced using a single-screw extruder under similar processing conditions. Palatability assessment was conducted as a split plate design where both first choice and intake ratio (IR) were determined. Apparent total tract digestibility (ATTD) of nutrients was estimated using Titanium dioxide as an indigestible marker. During diet production, specific mechanical energy (SME) of TY and SM (average of 187 kJ/kg) was greater (P<0.05) than for PP (138 kJ/kg); however, CM was similar to all treatments (167 kJ/kg). Kibble diameter, piece volume, and sectional expansion ratio were greatest for TY (P<0.05). Additionally, both bulk and piece density were lowest (P<0.05) for TY. Kibble hardness was lower for TY and SM (P<0.05; average of 2.10 Newtons) compared to CM and PP (average of 2.90 Newtons). During the palatability trial, TY was chosen first a greater number of times than CM (P<0.05; 36 vs 4, respectively), but differences were not found between TY and PP (25 vs 15, respectively) or TY and SM (24 vs 16, respectively). Cats had a greater IR (P<0.05) of TY compared to CM and PP (0.88 and 0.73, respectively). However, there was no difference in preference between TY and SM. ATTD of dry matter (DM) and organic matter (OM) was greater (P<0.05) for CM (87.43 and 91.34%, respectively) than other treatments. Both DM and OM ATTD of TY were similar (P<0.05) to PP and SM (average of 86.20 and average of 89.76%, respectively). Ash ATTD was greater (P<0.05) for cats fed TY and SM (average of 37.42%), intermediate for PP (32.79%), and lowest for CM (23.97%). Crude protein (CP) ATTD of TY was similar to all other treatments (average of 89.97%), but fat ATTD was lower (P<0.05; 92.52%) than other treatments (93.76 to 94.82%). Gross energy (GE) ATTD was greater (P<0.05) for CM than TY (90.97 vs 90.18%, respectively); however, TY was similar to PP and SM (average of 90.22%). Total dietary fiber (TDF) ATTD was similar between TY and CM (average of 66.20%) and greater (P<0.05) than PP and SM (average of 58.70%). The Torula yeast used in this study facilitated diet formation, increased diet preference, and was highly digestible when fed to cats.

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Ileal and total digestibility studies in pigs fed molasses type A or starch diets supplemented with torula yeast or soybean meal

Cited by 4 publications

References 15 publications

Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs

Torula yeast has greater digestibility of amino acids and phosphorus, but not energy, compared with a commercial source of fish meal fed to weanling pigs

Nutritional values of sugarcane products in local Caribbean growing pigs

Evaluation of Torula yeast as a protein source in extruded feline diets

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