Energy requirements for growth in the Yorkshire terrier
| Autor: | Janet Alexander, Penelope J. Morris, Alison Colyer |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
040301 veterinary sciences
Endocrinology Diabetes and Metabolism Population NRC National Research Council First year of life Growth Energy requirement 0403 veterinary science Animal science Body condition score Puppy biology.animal Medicine education Yorkshire Terrier education.field_of_study Nutrition and Dietetics biology Puppies business.industry Yorkshire terriers 0402 animal and dairy science 04 agricultural and veterinary sciences 040201 dairy & animal science Breed Dog breeds Labrador Retriever Energy requirements business Food Science Research Article |
| Zdroj: | Journal of Nutritional Science |
| ISSN: | 2048-6790 |
| Popis: | The 2006 National Research Council (NRC) equation calculating puppy energy requirements does not account for reported breed differences in growth pattern. Energy requirements of toy breed puppies are unknown and it is unclear whether feeding guidelines should differ between breeds. Energy requirements of Yorkshire terrier (YT) puppies were observed over their first year of life and compared with those predicted by the NRC and those previously observed in large (Labrador retriever) and medium (miniature Schnauzer; MS) breed puppies. Twenty-two puppies (from eight litters) were offered complete and balanced diets to maintain ideal body condition score (BCS). Energy intake, body weight and BCS were recorded from 10 to 52 weeks of age. Every 12 weeks, health was monitored by veterinary examination, routine haematology and plasma biochemistry. Puppies remained clinically healthy with normal skeletal development throughout. After analysis by linear mixed models it was observed that the NRC equation overestimates YT energy requirements between 10 and 20 weeks of age by up to 324·3 (95 % CI 390·4, 258·2) kJ/kg0·75. Energy intake was lower (P 0·75 and lower than MS between 16 and 25 weeks by up to 216·3 (95 % CI 313·0, 119·7) kJ/kg0·75 (P |
| Databáze: | OpenAIRE |
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