Some Effects of Lactose on Protein Utilization in the Baby Pig

Sewell, R. F.; West, J. P.

doi:10.2527/jas1965.241239x

Cited by 26 publications

(10 citation statements)

References 8 publications

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“…However, there was no significant difference between glucose and dextrin. This result is in contrast with reports that pigs fed diets containing lactose had higher (PO.05) apparent N digestibility (Sewell and West, 1965). This improvement may be caused by the high rate of screen of lactase, the enzyme responsible for lactose degradation, present in the digestive system of the young pig (Corring et al, 1978).…”

Section: Nutrient Digestibilitycontrasting

confidence: 84%

“…The best crude protein (CP) digestibility was found in pigs fed diet A, and the worst was found in pigs fed diet E; those for diets B, C and D were intermediate. This result is supported by reports (Sewell and West, 1965) that pigs fed diets containing lactose had higher (P<0.05) apparent N digestibility. During the third week postweaning (phase II), there were no significant differences in any nutrient digestibilities among treatments.…”

Section: Nutrient Digestibilitysupporting

confidence: 82%

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Study on the nutritive value of dextrin as a carbohydrate source for pigs weaned at 21 days of age

Lee

Han²,

Lee³

et al. 2000

J. Anim. Feed Sci.

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Two experiments were conducted to compare the nutritive value of dextrin to that of various carbohydrate sources and to determine the optimal incorporation ratio with lactose for pigs weaned at 21 days of age. In each experiment, eighty pigs (BW 6.43±0.18 kg in experiment 1 and 6.93±0.19 kg in 2) were used as an experimental unit and allotted to 20 groups (4 pigs/group, 5 groups/ treatment) using a completely randomized block design. Each group was assigned to one of 5 dietary treatments. Dextrin (control), maize starch and 3 different sources of sugar (lactose, glucose, and sucrose) composed 5 dietary treatments for experiment 1. Five 5 graded lactose:glucose ratios (100:0, 75:25, 50:50, 25:75 and 0:100, diet A, B, C, D and E, respectively) were used as the treatments in experiment 2. In experiment 1, pigs fed the diet containing maize starch showed the lowest (P<0.05) average daily gain (ADG) and average daily feed intake (ADFI Overall, there were no significant differences in ADG and ADFI among treatments. However, pigs fed the dextrin diet had improved feed conversion ratio (FCR) compared with pigs fed other diets (PO.05). During the initial 14 d postweaning (phase I), no significant differences were found in digestibilities of gross energy (GE), dry matter (DM), crude protein (CP) and crude ash (CA) among treatments. During the third week postweaning (phase II), the digestibilities of GE and CP of pigs fed the diet containing sucrose were higher than those of the other treatments. In experiment 2, overall, no significant differences were found in ADG, ADFI and FCR. During the initial 14 d postweaning (phase I), no significant differences were found in nutrient digestibilities except for gross energy (GE) digestibility. GE digestibility obtained from diet A was greater (PO.05) than that from diet D, while those for diets B, C and E were intermediate.

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Section: Nutrient Digestibilitycontrasting

confidence: 84%

Section: Nutrient Digestibilitysupporting

confidence: 82%

Study on the nutritive value of dextrin as a carbohydrate source for pigs weaned at 21 days of age

Lee

Han²,

Lee³

et al. 2000

J. Anim. Feed Sci.

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“…This lack of agreement could be a reflection of the shorter experimental period and smaller number of animals used in the lllinois work. Moreover, in view of recent work by Sewell and West (1965) in which the advantages of lactose fed in combination with soyabean protein were outlined, it may also be due in part to the different source of protein used in the diet.…”

Section: Discussionmentioning

confidence: 99%

Lactose utilisation by the growing pig

Shearer¹,

Dunkin

1968

New Zealand Journal of Agricultural Research

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Twenty-eight weaning pigs were used in a feeding experiment to detennine the effect of different levels of lactose in the diet on growth perfonnance and carcass characteristics. Seven pigs weighing initially 50 lb and penned individually were allocated to each of four treatment diets in which lactose was substituted for wheat starch at levels of 0%, 15%, 30%, or 45% of the diet. The meal mixtures were fed as a gruel using three parts water: one part meal (w/w).Over a period of 56 days pigs receiving diets containing 30% or 45% lactose grew 10% and 39% slower respectively than the controls (P < 0.01). The pigs on the 45% lactose diet also grew significantly slower (P < 0.05) than those fed diets containing either 15% or 30% of lactose. Reduced food consumption was a major factor contributing to the poor and very variable performance of the group fed the 45% lactose diet. Similar treatment differences were evident for food conversion efficiency but there was little treatment effect on carcass fatness. The incidence and duration of diarrhoea increased with increasing levels of dietary lactose. Diets containing up to 30% lactose caused a transient diarrhoea, but some of the animals on 45% lactose continued to scour until the termination of the experiment.

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“…Much research exists regarding the benefits of lactose on the growth performance of weanling pigs (Sewell and West, 1965;Mahan, 1992;Mahan and Newton, 1993;Nessmith et al, 1997;O'Doherty et al, 2004). Lactose has been shown to act as a specific substrate for lactobacilli (Pierce et al, 2006), increase intake (O'Doherty et al, 2004), slow digesta flow rates (Buraczewski et al, 1971) and influence organic acid production in the lower gut of the pig (Friend et al, 1962) all of which potentially benefits the host in the stressful post-weaning period.…”

Section: Introductionmentioning

confidence: 99%

The effect of lactose and inulin on intestinal morphology, selected microbial populations and volatile fatty acid concentrations in the gastro-intestinal tract of the weanling pig

et al. 2006

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2006). The effect of lactose and inulin on intestinal morphology, selected microbial populations and volatile fatty acid concentrations in the gastro-intestinal tract of the weanling pig. AbstractTwenty piglets (21 days, 7·8 kg live weight (LW)) were used in a 2 £ 2 factorial to investigate interactions between lactose and inulin on intestinal morphology, microbiology and volatile fatty acid (VFA) production of the weanling pig. The piglets were offered the following diets for 6 days and then sacrificed: (T1) 150 g/kg lactose, (T2) 150 g/kg lactose þ15 g/kg inulin, ( T3) 330 g/kg lactose, and ( T4) 330 g/kg lactose þ15 g/kg inulin. Tissue samples were taken from the duodenum, jejunum and ileum for morphological measurements. Digesta samples were taken from the ileum, caecum and colon. There was an interaction ( P , 0·05) between lactose and inulin in villous height in the jejunum. The inclusion of inulin at 150 g/kg lactose increased villous height compared with 150 g/kg lactose without inulin. However, inulin had no effect on villous height at 330 g/kg lactose inclusion. There was a linear relationship between food intake and villous height in the duodenum ( P , 0·001, R 2 ¼ 0·45) and the jejunum ( P , 0·01, R 2 ¼ 0·25). The inclusion of 330 g/kg lactose increased ( P , 0·05) total VFA compared with 150 g/kg lactose in the caecum and the population of lactobacilli in the caecum and colon ( P , 0·1). There was an interaction ( P , 0·05) between lactose and inulin for total VFA concentration in the colon. The pigs receiving 330 g/kg lactose had a higher total VFA concentration compared with pigs on 150 g/kg lactose. However, there was no difference between 150 g/kg and 330 g/kg lactose when the diets were supplemented with inulin. In conclusion, the inclusion of high dietary concentrations of lactose resulted in increased lactobacilli and short-chain fatty acid concentrations. The inclusion of inulin with low dietary concentrations of lactose resulted in improved intestinal health through a reduction of intestinal pH and increases in villous height.

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Some Effects of Lactose on Protein Utilization in the Baby Pig

Cited by 26 publications

References 8 publications

Study on the nutritive value of dextrin as a carbohydrate source for pigs weaned at 21 days of age

Study on the nutritive value of dextrin as a carbohydrate source for pigs weaned at 21 days of age

Lactose utilisation by the growing pig

The effect of lactose and inulin on intestinal morphology, selected microbial populations and volatile fatty acid concentrations in the gastro-intestinal tract of the weanling pig

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