Protein digestion in mink

Szymeczko, Roman; Skrede, Anders

doi:10.1080/00015129009438018

Cited by 30 publications

(26 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The nonessential amino acids absorbed fastest were Ala, Glu and Tyr after the EC diet, and Tyr, Glu and Ala after the ECFM diet; the slowest after both diets was Cys. Similarly to mink, (Szymeczko and Skrede, 1990) it can also be noticed in foxes that substituting half of fresh fish protein with fish meal protein increased the rate of absorption of Arg in comparison with Met and Lys. Szymeczko and Burlikowska (1996) pointed out the high digestibility of nitrogen 93.7% and amino acids 90.6% in the distal segment of the small intestine of polar foxes fed on the diet with the 50% content of high quality fish and beef meat proteins.…”

Section: Apparent Ileal and Total Digestibility Of Nitrogen And Aminomentioning

confidence: 99%

“…Samples of digesta were freeze-dried and ground and, in the case of faeces, sifted to remove hair. (Szymeczko and Skrede, 1990). The experimental diets were: a diet with whole fish protein (WF), a diet in which half of the whole fish protein was replaced with fish meal (WFFM), and a diet with fish meal as the only source of protein (FM).…”

Section: Apparent Ileal and Total Digestibility Of Nitrogen And Aminomentioning

confidence: 99%

“…Mink is an animal characterized by a simple and short digestive tract (only 4 to 5 times its body length), without a caecum and very short passage times for digesta (only 2.5-4 h) (Kainer, 1954;Slawhski et al, 1962;Hansen, 1978;Bleavins and Aulerich, 1981;Szymeczko and Skrede, 1990). The length of the alimentary canal of polar foxes is slightly shorter than in mink (about 3-4:1) (Slawihski etal., 1962;Szymeczko etal., 1992;Szymeczko and Burlikowska, 1996).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Ileal and total digestibility of amino acids in feeds used in mink and polar fox nutrition

Szymeczko¹

2001

J. Anim. Feed Sci.

View full text Add to dashboard Cite

The results of research on the apparent ileal and total digestibility of nitrogen and amino acids in mink and polar foxes are presented. The research reveals lower values of apparent nitrogen and amino acid digestibility coefficients in the small intestine than in the whole alimentary tract of these animals fed on diets containing different sources of animal protein. Fresh fish proteins showed higher ileal and total digestibility of nitrogen and amino acids than fish meal proteins. The increase or sole content of fish meals in the diets caused more rapid digesta passage, a rise in the amount of voided faeces and lower apparent ileal and total digestibility of nitrogen and amino acids. After diets containing whole fish and beef, the amino acids with the highest digestibility were methionine and lysine. After the diets containing fish meal, meat meal, meat-and-bone meal, and poultry by-product meal, arginine was the amino acid that was the quickest to be absorbed from the small intestine in mink and polar foxes. The amino acids of the lowest availability in the small intestine, as well as in the whole alimentary tract of these species appeared to be threonine and cystine. The lowest apparent digestibility of these amino acids probably resulted from their high content in endogenous nitrogen released in the digestive tract of mink and polar foxes.

show abstract

Section: Apparent Ileal and Total Digestibility Of Nitrogen And Aminomentioning

confidence: 99%

Section: Apparent Ileal and Total Digestibility Of Nitrogen And Aminomentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ileal and total digestibility of amino acids in feeds used in mink and polar fox nutrition

Szymeczko¹

2001

J. Anim. Feed Sci.

View full text Add to dashboard Cite

show abstract

“…The digestive tract of the mink is very simple (Szymeczko and Skrede, 1990) with a low a-amylase enzyme activity (Elnif et al, 1988) and microbial activity (Williams et al, 1998). Therefore, to ensure high digestibility, the dietary carbohydrate supply has to be either monosaccharides or gelatinised starch.…”

Section: Introductionmentioning

confidence: 99%

Effects of substitution of dietary protein with carbohydrate on lactation performance in the mink (<i>Mustela vison</i>)

Fink¹,

Tauson²,

Chwalibog³

et al. 2004

J. Anim. Feed Sci.

View full text Add to dashboard Cite

Thirty mink dams nursing litters of 6 kits were assigned to one of 3 dietary treatments to investigate the effects of changing the protein:carbohydrate ratio on nutrient utilization, heat production, milk production and kit growth. Three diets were formulated to contain 65:3 (LC), 48:15 (MC) or 34:33 (HC) % of the metabolizable energy (ME) from protein and carbohydrate, respectively. The diets were fed ad libitum for 4 weeks from parturition. Twelve dams were held in an intensive care unit and subjected to balance and respiration experiments and the kits were injected with deuterium oxide to measure water kinetics and milk production. Eighteen dams were kept under normal farm conditions and feed intake of dams and weight gain of the kits were determined. Milk samples were collected from the dams. Metabolizable energy intake was not affected by dietary treatment. Carbohydrates were efficiently utilized with a digestibility coefficient of 84% in dams fed the HC diet. Dams fed the HC diet had a lower (PO.05) percentage weight loss, lower (PO.05) total heat production (HE), lower (P<0.05) protein oxidation (OXP), lower (P<0.05) water intake and a lower (P<0.05) nitrogen (N) excretion than dams fed the LC diet. Milk production, and thereby liveweights of the kits 4 weeks post partum, was higher (P<0.05) in dams fed the HC diet than in dams fed the LC diet. In conclusion, lactating mink dams are able to utilize digestible carbohydrates with positive effects on lactation performance and reduced nitrogen excretion.

show abstract

“…Although digestibility does not mean the same as availability, digestibility studies have become the most favorite technique for estimating AA availability in different animal species (4). The previous research on polar foxes and mink revealed that, depending on the source of dietary protein, the apparent digestibility of nitrogen and AAs determined in digesta from the terminal part of the small intestine was lower (even by several percentage units) compared to the apparent digestibility measured in feces (5,6). According to Szymeczko et al (6), the total tract digestibility method informs only about the final effect of protein digestion; it does not give a view on the changes of AAs that occur in the large intestine as a result of its bacterial microflora activity and, therefore, may overestimate the amounts of AA absorbed from the digestive tract in dogs, mink, and foxes.…”

Section: Introductionmentioning

confidence: 99%

Content and apparent ileal digestibility of protein and amino acids in diets fed to parent stock of farm-raised polar foxes (Alopex lagopus L.)

Burlikowska¹,

Szymeczko²,

Piotrowska³

et al. 2013

Turk J Vet Anim Sci

Self Cite

View full text Add to dashboard Cite

Protein digestion in mink

Cited by 30 publications

References 7 publications

Ileal and total digestibility of amino acids in feeds used in mink and polar fox nutrition

Ileal and total digestibility of amino acids in feeds used in mink and polar fox nutrition

Effects of substitution of dietary protein with carbohydrate on lactation performance in the mink (<i>Mustela vison</i>)

Content and apparent ileal digestibility of protein and amino acids in diets fed to parent stock of farm-raised polar foxes (Alopex lagopus L.)

Contact Info

Product

Resources

About