THE COMPARISON OF THE LABEL CONTENT IN SELECTED DRY FOODS FOR DOGS AND CATS IN 2011 AND 2013

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Zeszyty Problemowe Postępów Nauk Rolniczych nr 76, 2014, 33 44 THE COMPARISON OF THE LABEL CONTENT IN SELECTED DRY FOODS FOR DOGS AND CATS IN 20 AND Karolina Hołda 1, Sybilla Berwid-Wójtowicz 2, Robert Głogowski 3 1,3 Warsaw University of Life Sciences SGGW 2 www.dietoprofilaktyka.pl Summary. The objective of this study was to compare the content of selected complete dry feed labels for adult, healthy dogs and cats, emphasizing the accordance with the relevant EU requirements which have recently came into force. Additionally, simple calculations of the energy content were made to enhance the characteristics of the products available to the customer. The level of accordance reached in average 87% and 82% in dog and cat food respectively. It should be stated that the improvement of the labels content, as compared with 20, was not significant. The key elements of the label information were either not improved or decreased (the statement of the necessity of constant access to water or daily dosage per animal). All evaluated products were typical maintenance foods, but their energy density was quite differentiated which may have some deleterious nutritional consequences associated with their long time supply. Key words: dry feed, label content, maintenance pet food, energy density INTRODUCTION Commercial pet foods are an easy way to fulfill the nutrient requirements of pets. Dry petfood products dominate global sales with strong and stable market position. This sector predominates wet products approximately 0%. In, relatively largest part of the petfood sales was in Europe. However, the choice of an adequate product is a frequent dilemma for pet owners whether major companies design their product portfolio accordingly to human s tastes [Czajkowska et al. ]. The vast abundance of products of various quality infers the necessity for the profound knowledge of the nutritional value of the product, which typically needs to be gathered from Corresponding author Adres do korespondencji: Robert Głogowski, Szkoła Główna Gospodarstwa Wiejskiego w Warszawie, Wydział Nauk o Zwierzętach, Katedra Szczegółowej Hodowli Zwierząt, ul. Ciszewskiego 8, 02-786 Warszawa, e-mail: robert_glogowski@sggw.pl

34 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski the label. The adequacy of the information on the package, corresponding with the content properties is therefore crucial for the health of the pets. The European Pet Food Industry Federation represents 26 countries and promotes responsible ownership of pets. One of its most important publication is, revised in 20, Code of good labelling practice for petfood [FEDIAF 20], that gives an augmented explanation of the rules, applicable in pet food label analysis. The major source of legislation remains an EC Regulation 767/2009. In Poland, the EU legislation concerning labelling of dog and cat foods came into force after two years of transition period, in September. At this moment, all products present on the market were obligated to be fully complied with the above mentioned Regulation. The objective of this study was to compare the accordance of the label content of selected dry food commercially available in Poland in 20 and with EU regulations, complemented with simple nutritional quality estimation. MATERIALS AND METHODS The label content of the set of dry dog and cat foods was evaluated, regarding their accordance with EU labeling regulations. In the first phase total number of 27 commercial dry food labels (1 for dogs, 12 for cats) was assessed. The labels were obtained in 20, during the intermediate period preceding the full implementation of EU law in Poland [EC 767/2009]. Product and producer names were encoded as P1 to P1 for dogs and K1 to K12 for cats. All products were available on the market for at least 12 months, representing the popular brands, sold in pet stores as in supermarkets, reflecting the portfolio of four major petfood producers active in Poland, and one smaller company. One product was imported, labeled as manufactured on the other continent. In the second, final phase of the study (year ), only 24 labels were analyzed, because some products evaluated in the first phase were removed from the market by manufacturers, therefore direct comparison for these was not possible. There was no effect of the manufacturer or brand on the label s content, therefore it was considered negligible and not presented in the study. Table 1 presents the list of elements of the information on the label, considered in the analysis. The selection of assessed labeling particulars was compiled of mandatory and voluntary elements [EC 767/2009, FEDIAF 20]. Three types of information were assigned for each of the label s particular: correct (1), incorrect (0), potentially misleading (no marking). The average level of accordance (ALA) was calculated for each analyzed element of the label (ALAE) and for each product (ALAP) commercially available in 20 and. The obtained results were compared with Wilcoxon s rank sum test, using IBM SPSS (v. 19PL). For all analyzed products, the energy density (ED) and caloric distribution as an amount of metabolic energy derived from protein, fat and carbohydrates were assayed according to the method described in Case et al. [20], based on modified Atwater equations. Zeszyty Problemowe Postępów Nauk Rolniczych

The comparison of the label content in selected dry foods for dogs and cats... 3 Table 1. Elements of pet food labels evaluated in 20 and Tabela 1. Elementy etykiet karm oceniane w roku 20 i Product description Opis produktu Instructions for proper use Instrukcja stosowania Feed material declaration Deklaracja składu Analytical constituents Składniki analityczne Additives Dodatki Contact data Dane kontaktowe Technical data, traceability Dane techniczne, pochodzenie Type of feed Rodzaj karmy Animal species Gatunek zwierzęcia Daily ration in the terms of amounts to be fed relative to the life stage Dzienna ilość karmy właściwa dla wieku zwierzęcia Indication of the necessity to ensure fresh water availability at all times when feeding dry food Wskazanie konieczności zapewnienia stałej dostępności wody pitnej Heading: COMPOSITION Nagłówek: SKŁAD Listed by specific name in descending order by weight Składniki wymienione w porządku malejącym według masy The name and percentage of weight of a feed material, if emphasized on the label Nazwa i udział procentowy składników podkreślonych na froncie etykiety Weight percentage: crude protein, crude fibres, crude oils and fats, crude ash Odsetek wagowy: białko surowe, włókna surowe, tłuszcze surowe, popiół surowy The total amount of amino acids, vitamins, and/or trace elements, if declared under the heading Zawartość całkowita aminokwasów, witamin i/lub pierwiastków śladowych jeśli zadeklarowane Heading: ADDITIVES Nagłówek: DODATKI Technological additives Dodatki technologiczne Business address Adres przedsiębiorstwa Company name Nazwa firmy Free telephone number or other appropriate means of communication to obtain the information on the product Bezpłatny numer informacji telefonicznej lub inny sposób uzyskania danych o produkcie Net quantity Masa netto Minimum storage life Minimalny okres przydatności Batch number Numer partii RESULTS AND DISCUSSION The overall results of the study showed substantial variation in the accordance with legislation, presented by the evaluated labels. Table 2 presents generalized accordance of evaluated pet food label elements with EU labeling regulations. The incorrect information on dog food labels appeared less frequently in than it did in 20. Interestingly, the number of potentially misleading information was higher on cat than that on dog food labels and slightly increased in. For the explanatory reasons the ALAP results were presented in graphic form in Figures 1 and 2. The highest level of recorded incorrect and misleading information was 26% in 20. On some labels it was subsequently reduced (P1), but on K8 label both incorrect and misleading information levels remained unchanged ( and 26% respectively). nr 76, 2014

36 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski Table 2. The proportion of the results of the accordance assessment Tabela 2. Proporcje wyników oceny zgodności Label information Informacja na etykiecie Correct (C) Zgodna Incorrect (I) Niezgodna Possibly misleading (M) Potencjalnie myląca Dogs Psy Cats Koty 20 20 10 12 10 10 6 3 4 3 6 7 0 20 40 60 80 20 P1 20 P2 20 P4 20 63 21 P 74 20 74 P6 74 20 9 P7 9 20 9 P8 9 20 P9 20 P10 20 P 20 P12 20 P13 20 63 21 P14 20 8 26 P1 CORRECT INCORRECT MISLEADING Fig. 1. Rys. 1. The accordance percentage of dog foods in ALAP category Procent zgodności karm dla psów w kategorii ALAP Zeszyty Problemowe Postępów Nauk Rolniczych

The comparison of the label content in selected dry foods for dogs and cats... 37 0 20 40 60 80 20 K1 20 K3 20 K 20 K6 20 8 26 K7 68 21 20 68 26 K8 68 26 20 K9 20 K10 20 K 20 K12 CORRECT INCORRECT MISLEADING Fig. 2. Rys. 2. The accordance percentage of cat foods in ALAP category Procent zgodności karm dla kotów w kategorii ALAP Therefore it may be noted that improvement can be observed in some cases, but the trend was not as strong as one might have expected. General impression is, that dog food labels were better adjusted to new UE regulations, but the relatively small sample groups compared in the study, do not allow drawing major conclusions. Figures 3 6 show the detailed distribution of incorrect and misleading information on the reviewed labels. Presumably the most disadvantageous observations on dog food labels were: increased level of incorrectly stated necessity of ensuring constant access for fresh water and no improvement in the absolutely mandatory information of weight percentage of components, emphasized (claimed) on the front of the package (Fig. 3), whilst the former of a particular importance for its possible severe health complications. There is an absolute need for constant water supply during dry food offering, regardless of the initial moisture content of the diet [Marcon de Brito et al. 2010, Case et al. 20]. nr 76, 2014

38 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski 40% 3% 30% 2% 20% 1% 10% % 0% 20 Fig. 3. Rys. 3. Incorrect information on dog food labels Udział informacji niezgodnych na etykietach karm dla psów 90% 80% 70% 60% 0% 40% 30% 20% 10% 0% 20 Fig. 4. Rys. 4. Incorrect information on cat food labels Udział informacji niezgodnych na etykietach karm dla kotów Zeszyty Problemowe Postępów Nauk Rolniczych

The comparison of the label content in selected dry foods for dogs and cats... 39 70% 60% 0% 40% 30% 20% 10% 0% 20 Fig.. Rys.. Potentially misleading information on dog food labels Udział informacji potencjalnie mylących na etykietach karm dla psów 70% 60% 0% 40% 30% 20% 10% 0% 20 Fig. 6. Rys. 6. Potentially misleading information on cat food labels Udział informacji potencjalnie mylących na etykietach karm dla kotów nr 76, 2014

40 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski The substantial level of potentially misleading information on both, dog and cat food labels concerned the daily ration, which is commonly considered a key element for the appropriate management of the body weight [Heuberger and Wakshlag 20, Murphy et al. 2012]. In general, 6 of 17 evaluated label elements of cat food showed substantial amount of misleading information, in most cases both in 20 and. The indexes of accordance (Table 2), indicate the moderate trend of improvement in the ALAE values, considering the correct information on the label. The tendency is notably stronger in dog than that in cat food. However slightly increased level of misleading information on cat food labels in both ALAE and ALAP categories may be regarded confounding (Table 3). Table 3. The average level of accordance (ALA) of the dry petfood labels [%] Tabela 3. Średni poziom zgodności (ALA) na etykietach karm [%] Dogs Psy Cats Koty Dogs Psy 20 Significance* Mean ±SD Mean ±SD Istotność* ALAE C 82.00 21.4 87.3 18.69 0.062 I 7.06.23 4.24 9.91 0.221 M 10.88 20.63 8.3 17.31 0.109 C 77.06 2.92 80.00 24.24 0.238 I 10.00 21.1 6.47.18 0.063 M 12.94 19.61 13.3 20.9 0.6 ALAP C 82.07.18 82.7 1.43 0.6 I 7.93 9. 7.14 9.73 0.276 M 10.07 7.69 10.29 6.83 0.93 C 76.80 10.7.80 12.12 0.336 Cats Koty I 10.20 4.94 6.60 4.43 0.109 M 13.00 10.1 13.60 9.93 0.70 ALAE accordance calculated for the label s element/zgodność obliczona dla elementu etykiety. ALAP accordance calculated for the product s label/zgodność obliczona dla produktu. C correct/zgodne. I incorrect/niezgodne. M misleading/mylące. *Wilcoxon s signed-rank test/test Wilcoxona. Probably the most bothering observation was, that on some labels the levels of incorrect and potentially misleading information were constant in 20 and. This may indicate, that in fact there was no concern of some of the petfood manufacturers and distributors currently operating in Poland, for the accurate labelling of their products. Zeszyty Problemowe Postępów Nauk Rolniczych

The comparison of the label content in selected dry foods for dogs and cats... 41 Numerous Authors have emphasized, that the description placed on the label is the main element of decision making for customers [Kurosad 2010, Berwid-Wójtowicz 20, Case et al. 20]. Therefore one may speculate, that the consequence of misleading label information are unwanted food purchases and possible further nutritional effects. Above mentioned observations were as well reiterated in the significance of ALA differences assessment between 20 and. The ALAE values were most generally more favorable that those of ALAP, with the dog food correct information index increase from 82 to 87% (Table 3). The divergent accordance results reveal rather disadvantageous picture of cat dry food labeling. That situation may in some manner link with increasing number of overweight cats [BCS Body Condition System >, Laflamme 1997], euphemistically perceived by their owners [Kienzle and Bergler 2006], and together with some previously described nutritional peculiarities in cats [Zaghini and Biagi 200], lead to long term issues like obesity and related diseases [Bermingham et al. 2010]. According to FEDIAF [20], the energy content can be voluntary indicated on the label. Its value should be calculated accordingly to the methods, presented in FEDIAF Nutritional Guidelines for Cats and Dogs []. Table 4 presents the results of ED calculations for products evaluated in the study. It can be noticed, that such assessment can be performed by the responsible pet owner, carefully planning the nutrition scheme for the pet. In a recent study reported by Linder et al. [2012], similar calculations were made to evaluate potential risk of nutritional deficiency with caloric restrictions in dogs. Among five diets tested, one was described as maintenance with caloric density of 380 kcal/g. Interestingly, two more diets, included in that study had the weight loss and therapeutic weight loss status, with the ED values 331 and 327 kcal/ g, respectively. As compared to the current results (Table 4), they show only a slight difference (6 7 kcal/ g) which may have two potential implications. Firstly, the owner can proximately calculate and compare the nutrient profiles of the commercially available products for dogs and cats, making responsible choice at purchase what, coupled with the consequently offered daily ration (bowl size) regime, may facilitate optimal body weight management of his pet. Secondly, it can strengthen the awareness, that commonly offered maintenance diets may present quite high ED, what should entail deliberate caution with any ad libitum feeding attempts. That aspect emerges more seriously, comprehending the recent results of customers preferences, showing that the owners of overweight dogs express significantly less interest in corrected dog nutrition than owners of normal weight dogs [Suarez et al. 2012]. One more plausible asset of simple ED estimation described above, can be the alleviated adjustment of the nutrition strategy of the pet, matching the actual energy expenditure, to perpetuate stable body weight over time [Ramsey and Hagopian 2006, Sallander et al. 2010]. nr 76, 2014

42 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski Table 4. Calculated values of ED in dog and cat food Tabela 4. Wartości ED obliczone dla karm dla psów i kotów Energy density Carbohydrates Protein Białko Fat Tłuszcz Code Kod Gęstość energetyczna Węglowodany [kcal/ g] [%] P1 338,2 24,8 30,2 4,0 P2 338,2 24,8 30,2 4,0 P4 37,2 27,0 40,8 32,2 P 361, 24,2 32,9 42,9 P6 37,8 22,3 38,4 39,2 P7 364,4 2,0 3,0 40,0 P8 369,7 22,7 3,6 41,6 P9 339,0 22,2 26,3 1, P10 337,7 22,3 26,4 1,3 P 339,0 22,2 26,3 1, P12 34,00 23,3 32,0 44,6 P13 348,0 24,1 31,7 44,2 P14 31,00 30,9 41,2 27,9 P1 361,0 31,0 40,0 29,0 Mean Średnia 33,02 K1 343,0 34,6 29,7 3,7 K3 37,7 33, 36,2 30,3 K 372,2 32,0 36, 31, K6 372,2 32,0 36, 31, K7 366,20 30,6 34,8 34,6 K8 369,00 31,3 34,6 34,1 K9 36,0 30,4 38,1 31,4 K10 36,0 30,4 38,1 31,4 K 341,2 32,8 26,2 41,0 K12 344,7 32, 2,9 41,6 Mean Średnia 39,8 CONCLUSIONS The limiting factor of the current study is its hypothetical nature, and it should be stressed that presented comparison and assumptions warrant further in vivo validation. However, the assessment of the accordance of the selected dry pet food labels information with the EU regulations had the confounding effect and revealed rather unsatisfactory level of accurateness. Zeszyty Problemowe Postępów Nauk Rolniczych

The comparison of the label content in selected dry foods for dogs and cats... 43 LITERATURE Bermingham E.N., Thomas D.G., Morris P.J., Hawthorne A.J., 2010. Energy requirements of adult cats. British Journal of Nutrition 103, 1083 1093. Berwid-Wójtowicz S., 20. Istotna rola etykiety. Rynek Zoologiczny 9, 38 39. Case L.P., Daristotle L., Hayek M.G., Raasch M.F., 20. Canine and feline nutrition, 3rd edition. Elsevier. Czajkowska K., Kowalska H., Piotrowski D.,. Rola konsumenta w procesie projektowania nowych produktów spożywczych. Zeszyty Problemowe Postępów Nauk Rolniczych 7, 23 32. FEDIAF 20. Code of good labeling practice for pet food. FEDIAF. Nutritional guidelines for cats and dogs. Heuberger R., Wakshlag J., 20. The relationship of feeding patterns and obesity in dogs. Journal of Animal Physiology and Animal Nutrition 9, 98 10. Kienzle E., Bergler R. 2006. Human-animal relationship of owners of normal and overweight cats. Journal of Nutrition 136, 1947S 190S. Kurosad A., 2010. Co wiemy o komercyjnych karmach dla psów i kotów? Magazyn Weterynaryjny 19, 809 814. Laflamme D.P., 1997. Development and validation of a body condition score system for dogs. Canine Practice 22, 10 1. Linder D.E., Freeman L.M., Morris P., German A.J., Biourge V., Heinze C., Alexander L., 2012. Theoretical evaluation of risk for nutritional deficiency with caloric restriction in dogs. Veterinary Quarterly 32, 123 129. Marcon de Brito C.B., Félix A.P., De Jesus R.M., De França M.I., De Oliveira S.G., Krabbe E.L., Maiorka A., 2010. Digestibility and palatability of dog foods containing different moisture levels, and the inclusion of a mould inhibitor. Animal Feed Science and Technology 19, 10 1. Murphy M., Lusby A.L., Bartger J.W., Kirk C.A., 2012. Size of food bowl an scoop affects amount of food owners feed their dogs. Journal of Animal Physiology and Animal Nutrition 96, 237 241. Official Journal of the European Union L 229. Regulation (EC) No 767/2009 of the European Parliament and of the Council of 13 July 2009. Ramsey J.J., Hagopian K., 2006. Energy expenditure and restriction of energy intake: Could energy restriction alter energy expenditure in companion animals? Journal of Nutrition, Supl. 198S 1966S. Sallander M., Hagberg M., Hedhammar Ĺ., Rundgren M., Lindberg J.E., 2010. Energy-intake and activity risk factors for owner-perceived obesity in a defined population of Swedish dogs. Preventive Veterinary Medicine 96, 132 141. Suarez L., Peńa C., Carretón E., Juste M.C., Montoya-Alonso J.A., 2012. Preferences of owners of overweight dogs when buying commercial pet food. Journal of Animal Physiology and Animal Nutrition 96, 6 69. Zaghini G., Biagi G., 200. Nutritional peculiarities and diet palatability in the cat. Veterinary Research Communications 29(S2), 39 44. nr 76, 2014

44 K. Hołda, S. Berwid-Wójtowicz, R. Głogowski PORÓWNANIE TREŚCI ETYKIET WYBRANYCH KARM PEŁNOPORCJOWYCH DLA PSÓW I KOTÓW W 20 I ROKU Streszczenie. Celem prezentowanych badań była ocena treści wybranych etykiet pełnoporcjowych suchych karm dla dorosłych, zdrowych psów i kotów, z podkreśleniem zgodności z aktualnymi wymaganiami unijnymi. Średni poziom zgodności wyniósł 87 i 82%, odpowiednio dla psów i kotów. Warto podkreślić, że między 20 a rokiem nie nastąpiła istotna poprawa treści etykiet karm. Kluczowe elementy informacyjne etykiet nie zostały poprawione, a nawet uległy pogorszeniu (np. zdanie o konieczności zapewnienia wody pitnej czy informacja o zalecanej dziennej dawce na zwierzę). Wszystkie oceniane produkty należały do grupy typowych karm bytowych, jednak ich gęstość energetyczna była dość zróżnicowana, co w perspektywie ich długookresowego podawania może mieć niekorzystne konsekwencje żywieniowe. Słowa kluczowe: sucha karma, treść etykiety, karma bytowa, gęstość energetyczna Zeszyty Problemowe Postępów Nauk Rolniczych