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Showing posts with label protein. Show all posts
Showing posts with label protein. Show all posts

Thursday, March 22, 2012

Cats: nutrition and lifestyle choices

Zoran DL and Buffington CAT. Effects of nutrition choices and lifestyle changes on the well-being of cats, a carnivore that has moved indoors. J Am Vet Med Assoc. 2011; 239: 596-606.
 
Cats have lived on the outer edges of human society for many thousands of years. However, domestication has changed cats relatively little. Diet options for cats in the wild have included consumption of small mammals, birds, and insects. These are meat or protein-based diets that contain little carbohydrate. Cats, as a species, are strictly carnivorous. In many societies, they have been removed from their former free-roaming, active existence to a captive, indoor, sedentary one. They have also gone from consuming frequent, small meals of animals they could catch and kill to consuming prepared diets of human choosing.

Cats have specific requirements for certain nutrients, such as arachidonic acid, vitamins A and D and many B vitamins (niacin in particular), and the amino acids taurine, and arginine, which cannot be endogenously synthesized in large enough amounts to meet their needs. They have a very distinct need for large amounts of dietary protein that sets them apart from other mammals. This need becomes very important when cats are not eating well, are consuming diets containing poor-quality protein, or not consuming a sufficient amount of dietary protein to meet their needs. Too long a time period with inadequate protein intake can result in various abnormalities. These abnormalities include loss of muscle mass, abnormal energy metabolism, and reduced or poor immune function, reduced protein available for structural repair, and abnormal function of critical metabolic pathways.

Protein intake is being looked at closely in the composition of diets fed to achieve weight loss. The amount of protein intake in relationship to carbohydrate and fat intake is also being studied in other conditions such as urolithiasis, inflammatory bowel disease, and diabetes mellitus. It is important to note that although meeting basic nutritional needs is necessary for maintenance of health and well-being of cats, it may not be sufficient in itself to assure a healthy existence. [VT]

Related articles: Zoran D. The carnivore connection to nutrition in cats. J Am Vet Med Assoc. 2002; 221: 1559-67.

More on cat health:
Winn Feline Foundation Library
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Zoran DL and Buffington CAT. Effects of nutrition choices and lifestyle changes on the well-being of cats, a carnivore that has moved indoors. J Am Vet Med Assoc. 2011; 239: 596-606.
 
Cats have lived on the outer edges of human society for many thousands of years. However, domestication has changed cats relatively little. Diet options for cats in the wild have included consumption of small mammals, birds, and insects. These are meat or protein-based diets that contain little carbohydrate. Cats, as a species, are strictly carnivorous. In many societies, they have been removed from their former free-roaming, active existence to a captive, indoor, sedentary one. They have also gone from consuming frequent, small meals of animals they could catch and kill to consuming prepared diets of human choosing.

Cats have specific requirements for certain nutrients, such as arachidonic acid, vitamins A and D and many B vitamins (niacin in particular), and the amino acids taurine, and arginine, which cannot be endogenously synthesized in large enough amounts to meet their needs. They have a very distinct need for large amounts of dietary protein that sets them apart from other mammals. This need becomes very important when cats are not eating well, are consuming diets containing poor-quality protein, or not consuming a sufficient amount of dietary protein to meet their needs. Too long a time period with inadequate protein intake can result in various abnormalities. These abnormalities include loss of muscle mass, abnormal energy metabolism, and reduced or poor immune function, reduced protein available for structural repair, and abnormal function of critical metabolic pathways.

Protein intake is being looked at closely in the composition of diets fed to achieve weight loss. The amount of protein intake in relationship to carbohydrate and fat intake is also being studied in other conditions such as urolithiasis, inflammatory bowel disease, and diabetes mellitus. It is important to note that although meeting basic nutritional needs is necessary for maintenance of health and well-being of cats, it may not be sufficient in itself to assure a healthy existence. [VT]

Related articles: Zoran D. The carnivore connection to nutrition in cats. J Am Vet Med Assoc. 2002; 221: 1559-67.

More on cat health:
Winn Feline Foundation Library
Find us on Facebook
Follow us on Twitter
Read the Cat Health News Weekly
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Thursday, March 15, 2012

Dietary protein and kidney function in cats

Backlund B, Zoran DL, Nabity MB, Norby B and Bauer JE. Effects of dietary protein content on renal parameters in normal cats. J Feline Med Surg. 2011; 13: 698-704.

High dietary protein levels are essential in kittens during the growth phase and are considered beneficial for cats throughout all life stages. With a larger focus on obesity and diabetes in cats in the past 20 years, there has been an increasing awareness of high protein (HP) diets [>45% metabolizable energy] in the management of both diseases. Meat is the major source of protein in HP diets and this contributes to increased intake of creatine and creatinine, which can result in increased serum creatinine concentrations. This study evaluated the effect of dietary protein content on renal parameters in 23 healthy spayed female cats. The objective was to determine if cats eating diets high in protein would have higher serum urea nitrogen (UN) and creatinine values without a detectable change in kidney function. The cats were fed in two phases—in the first phase, they were randomly assigned either a (HP) or low protein diet. For the second phase, the cats were fed whichever diet they were not fed in the first phase. Blood and urine samples were collected every 2 weeks during the 10-week long study period. The study results noted that dietary intake could result in statistically significant changes in UN and several other biochemical analytes, although all analytes stayed within normal reference intervals. This information illustrates a need to obtain an accurate dietary history in cat patients in order to account for dietary influences on renal parameters, especially UN. [VT]

Related articles: Wei A, Fascetti AJ, Liu KJ, et al. Influence of a high-protein diet on energy balance in obese cats allowed ad libitum access to food. J Anim Physiol Anim Nutr (Berl). 2011; 95: 359-67.

More on cat health:
Winn Feline Foundation Library
Find us on Facebook
Follow us on Twitter
Read the Cat Health News Weekly
Join us on Google+
Backlund B, Zoran DL, Nabity MB, Norby B and Bauer JE. Effects of dietary protein content on renal parameters in normal cats. J Feline Med Surg. 2011; 13: 698-704.

High dietary protein levels are essential in kittens during the growth phase and are considered beneficial for cats throughout all life stages. With a larger focus on obesity and diabetes in cats in the past 20 years, there has been an increasing awareness of high protein (HP) diets [>45% metabolizable energy] in the management of both diseases. Meat is the major source of protein in HP diets and this contributes to increased intake of creatine and creatinine, which can result in increased serum creatinine concentrations. This study evaluated the effect of dietary protein content on renal parameters in 23 healthy spayed female cats. The objective was to determine if cats eating diets high in protein would have higher serum urea nitrogen (UN) and creatinine values without a detectable change in kidney function. The cats were fed in two phases—in the first phase, they were randomly assigned either a (HP) or low protein diet. For the second phase, the cats were fed whichever diet they were not fed in the first phase. Blood and urine samples were collected every 2 weeks during the 10-week long study period. The study results noted that dietary intake could result in statistically significant changes in UN and several other biochemical analytes, although all analytes stayed within normal reference intervals. This information illustrates a need to obtain an accurate dietary history in cat patients in order to account for dietary influences on renal parameters, especially UN. [VT]

Related articles: Wei A, Fascetti AJ, Liu KJ, et al. Influence of a high-protein diet on energy balance in obese cats allowed ad libitum access to food. J Anim Physiol Anim Nutr (Berl). 2011; 95: 359-67.

More on cat health:
Winn Feline Foundation Library
Find us on Facebook
Follow us on Twitter
Read the Cat Health News Weekly
Join us on Google+
Read More


Friday, October 16, 2009

Weight Loss and Diet in Cats

Vasconcellos RS, Borges NC, Goncalves KN et al: Protein intake during weight loss influences the energy required for weight loss and maintenance in cats, J Nutr 139:855, 2009.

The effects of various nutrients, such as protein and carbohydrate, on weight loss in cats are controversial. In this study, performed at the Universidada Estadual Paulista, Sao Paolo, Brazil, the effects of two diets with different protein levels on weight loss and maintenance was assessed. The control group of obese cats received a diet containing 21 g crude protein on a metabolizable energy basis, and the high-protein group received a diet containing 28 g crude protein. All cats were fed the diet until safe, controlled weight loss of 20% was achieved. After weight loss, all cats were fed a diet containing 28 g crude protein and were monitored for 120 days. During the weight loss phase, the control group experienced a reduction in lean body mass, whereas the high-protein group did not. Overall, the high-protein diet allowed a higher energy intake to achieve weight loss than the control diet, thus reducing the severity of energy restriction required. [SL]
>> PubMed Abstract

Related articles:
German AJ, Holden S, Bissot T et al: Changes in body composition during weight loss in obese client-owned cats: loss of lean tissue mass correlates with overall percentage of weight lost, J Feline Med Surg 10:452, 2008.
>> PubMed Abstract

Villaverde C, Ramsey JJ, Green AS et al: Energy restriction results in a mass-adjusted decrease in energy expenditure in cats that is maintained after weight regain, J Nutr 138:856, 2008.
>> PubMed Abstract

More on cat health: Winn Feline Foundation Library
Join us on Facebook
Follow us on Twitter
Vasconcellos RS, Borges NC, Goncalves KN et al: Protein intake during weight loss influences the energy required for weight loss and maintenance in cats, J Nutr 139:855, 2009.

The effects of various nutrients, such as protein and carbohydrate, on weight loss in cats are controversial. In this study, performed at the Universidada Estadual Paulista, Sao Paolo, Brazil, the effects of two diets with different protein levels on weight loss and maintenance was assessed. The control group of obese cats received a diet containing 21 g crude protein on a metabolizable energy basis, and the high-protein group received a diet containing 28 g crude protein. All cats were fed the diet until safe, controlled weight loss of 20% was achieved. After weight loss, all cats were fed a diet containing 28 g crude protein and were monitored for 120 days. During the weight loss phase, the control group experienced a reduction in lean body mass, whereas the high-protein group did not. Overall, the high-protein diet allowed a higher energy intake to achieve weight loss than the control diet, thus reducing the severity of energy restriction required. [SL]
>> PubMed Abstract

Related articles:
German AJ, Holden S, Bissot T et al: Changes in body composition during weight loss in obese client-owned cats: loss of lean tissue mass correlates with overall percentage of weight lost, J Feline Med Surg 10:452, 2008.
>> PubMed Abstract

Villaverde C, Ramsey JJ, Green AS et al: Energy restriction results in a mass-adjusted decrease in energy expenditure in cats that is maintained after weight regain, J Nutr 138:856, 2008.
>> PubMed Abstract

More on cat health: Winn Feline Foundation Library
Join us on Facebook
Follow us on Twitter
Read More