Digestibility and Safety of Limed Hide Collagen in Rat Feeding Experiments

Whitmore, Ronald; Booth, A. N.; Naghski, J.; Swift, C. E.

doi:10.1111/j.1365-2621.1975.tb03746.x

Cited by 7 publications

(7 citation statements)

References 10 publications

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“…It is possible that the longer exposure to water and enzymatic solution during the intestinal phase may have optimised the action of digestive enzymes and improved the DMD of Meat Product 1. A study conducted in rats demonstrated that the total tract digestibility of collagen was near to 100 % ( 4 ) . All treats from the Meat Product category had a significantly greater DMD after 18 h of in vitro incubation ( P < 0·05) when compared with the gastric phase.…”

Section: Resultsmentioning

confidence: 99%

In vitro disappearance characteristics of selected categories of commercially available dog treats

et al. 2014

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Pet owners desire treats with adequate nutritional profiles, functional benefits, long-lasting properties and an interactive nature. Therefore, it is pivotal to understand the digestion characteristics of treats produced by different processing methods and having variable nutritional composition. The objective of the present study was to measure in vitro disappearance characteristics of selected categories of commercially available treats. In vitro procedures developed by Boisen and Eggum in 1991 were modified to handle larger sample sizes. Treat samples were evaluated in triplicate. Following incubation, in vitro DM disappearance (DMD) was calculated. In vitro DMD of selected treats varied widely. For the gastric phase, DMD ranged from 6·9 to 88·8 %, whereas intestinal phase digestion resulted in a DMD range of 10·7–100·0 % (P < 0·05). Because of differences in treat composition and size, they were divided into six categories: Biscuit, Bone, Chew, Dental, Meat Product and Rawhide. In general, Bone was the least digestible treat category in both gastric and intestinal phases. Meat Product and Rawhide treats had a DMD of 71·5–100 % after the intestinal phase, whereas Biscuit had values above 93 %. Chew and Dental treats had a wide DMD range (54·5–100 %). Understanding the DMD of commercially available treats is important to verify their safety for consumption and potential digestibility once ingested. These data indicate wide variation in DMD among and within different treat categories. This information will assist pet food sale associates, pet owners and veterinarians to make more educated decisions when it relates to selection and recommendations about commercially available treats. Future work is needed to expand the knowledge on in vitro DMD and safety of treats and to further investigate their impact on in vivo DM digestibility once fed to dogs.

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Section: Resultsmentioning

confidence: 99%

In vitro disappearance characteristics of selected categories of commercially available dog treats

et al. 2014

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“…This is in agreement with water holding capacity of the beef-based diet, determined by fecal output (as-is)/DM intake, and was likely due to its soluble fiber source (beet pulp) or collagen concentration. These data may indicate that tigers are better suited to consume a diet containing a nonfermentable fiber source, a diet having a greater CP digestibility, or a diet that contains lower amounts of collagen, as high collagen supplementation (28% of diet) has been reported to induced diarrhea in rats [Whitmore et al, 1975].…”

Section: Discussionmentioning

confidence: 96%

Evaluation of nutrient digestibility and fecal characteristics of exotic felids fed horse‐ or beef‐based diets: use of the domestic cat as a model for exotic felids

et al. 2010

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The objective of this study was to determine the effects of feeding commercially available beef- and horse-based diets on nutrient digestibility and fecal characteristics of large captive exotic felids and domestic cats. Four species of large exotic felids including cheetahs, Malayan tigers, jaguars, and Amur tigers, and domestic cats were utilized in a crossover design. Raw meat diets included a beef-based diet (57% protein; 28% fat) and a horse-based diet (51% protein; 30% fat). All cats were acclimated to the diet for 16 days followed by a 4 day collection period, where total feces, including one fresh sample, were collected. All feces were scored on collection. Intake did not differ due to diet, but fecal output was greater when cats consumed the horse-based diet. Total tract apparent dry matter (DM) digestibility was higher (P<0.05) and organic matter (OM) and crude protein (CP) digestibilities were lower (P<0.05) when cats were fed the beef-based diet compared with the horse-based diet. CP digestibility was similar in domestic cats and cheetahs, and greater (P<0.05) than Amur tigers. Fecal scores were lower and fecal DM was greater (P<0.05) when cats consumed the horse-based diet compared with the beef-based diet. Domestic cats had lower (P<0.05) fecal ammonia concentrations compared with all other species. Fecal ammonia concentrations were lowest (P<0.05) when cats were fed the horse-based diet. Fecal total short-chain fatty acid (SCFA), branched-chain fatty acid (BCFA), and butyrate concentrations were higher (P<0.05) when cats consumed the beef-based diet. Our results suggest that the domestic cat serves as an appropriate model for large exotic felid species, but differences among the species exist. Decreased nutrient digestibility by tigers and jaguars should be considered when developing feeding recommendations for these species based on domestic cat data.

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“…Delimed, washed, fibrous insoluble hide collagen when fed to rats was well-digested (90%) and served as a source of energy. It was not toxic when fed at a high percentage (20%) of the diet for relatively long periods (Whitmore et al 1975).…”

Section: Resultsmentioning

confidence: 97%

“…It was not toxic when fed at a high percentage (20%) of the diet for relatively long periods (Whitmore et al 1975).…”

Section: Resultsmentioning

confidence: 99%

Effect of Hide Collagen on the Amino Acid Composition of Beef Patties and Pork Sausage

Rao

Henrickson

1986

Journal of Food Quality

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Comminuted wet collagen from cattle hide was used to replace lean meat in a ground beefpatty formulation at the 0,lO or 20% level and at the same level in a pork sausage formulation. The products were analyzed for amino acid composition by High Performance Liquid Chromatography. Theproducts with collagen at all replacement levels showed a slight decrease in the essential amino acids but still retained approximately 75 to 85% of the total essential amino acids. Therefore, it was concluded that collagen from cattle hide may be used to replace a portion of the lean meat or fat meat in ground beefpatties or pork sausage up to a 20% level while still providing much of the required dietary nutrition.

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Digestibility and Safety of Limed Hide Collagen in Rat Feeding Experiments

Cited by 7 publications

References 10 publications

In vitro disappearance characteristics of selected categories of commercially available dog treats

In vitro disappearance characteristics of selected categories of commercially available dog treats

Evaluation of nutrient digestibility and fecal characteristics of exotic felids fed horse‐ or beef‐based diets: use of the domestic cat as a model for exotic felids

Effect of Hide Collagen on the Amino Acid Composition of Beef Patties and Pork Sausage

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