Dietary supplementation with Chlorella vulgaris in broiler chickens submitted to heat-stress: effects on performance and meat

被引:5
作者
Cabrol, M. Boskovic [1 ]
Huerta, A. [1 ]
Bordignon, F. [1 ]
Pravato, M. [1 ]
Birolo, M. [1 ]
Petracci, M. [3 ]
Xiccato, G. [1 ]
Trocino, A. [1 ,2 ]
机构
[1] Univ Padua, Dept Agron Food Nat Resources Anim & Environm DAFN, I-35020 Legnaro, Padova, Italy
[2] Univ Padua, Dept Comparat Biomed & Food Sci BCA, I-35020 Legnaro, Padova, Italy
[3] Alma Mater Studiorum Univ Bologna, Dept Agr & Food Sci, I-47521 Cesena, Italy
关键词
microalgae; environmental temperature; myopathies; sex; GROWTH-PERFORMANCE; QUALITY TRAITS; SKELETAL-MUSCLE; CARCASS TRAITS; WOODEN-BREAST; SHEAR FORCE; LAYING HENS; MICROALGAE; PROTEIN; ACID;
D O I
10.1016/j.psj.2024.103828
中图分类号
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号
0905 ;
摘要
Heat stress can greatly challenge growth and meat quality of broiler chickens where research is looking for sustainable ingredients, such as microalgae, that could also alleviate its negative impacts. Thus, in the present study, 576 1 -D -old chicks (Ross 308) were housed until commercial slaughtering (42 D) in 36 pens in 2 rooms of a poultry house, according to a full factorial design encompassing 2 room temperatures (standard vs. high), 2 sexes (females vs. males), and 3 dietary treatments, that is, diet C0 (control diet), diet C3, and diet C6 containing 0, 3, and 6%, respectively, of C. vulgaris meal replacing the same quantities of soybean meal. The highest inclusion level of C. vulgaris decreased feed intake ( P < 0.001) and body weight ( P < 0.0001) compared to the control diet; it increased yellow and red indexes ( P < 0.0001) of the breast muscle, besides the proportion of n3 polyunsaturated fatty acids (PUFA) ( P = 0.028). Heat stress decreased feed intake ( P = 0.001), breast ( P = 0.001) and p. major yields ( P = 0.036), and increased meat pH ( P = 0.008) and cooking losses ( P < 0.001), umami ( P = 0.021) and brothy flavor ( P < 0.001), and the proportion of n3 PUFA rates ( P = 0.027), while reducing the contents of several amino acids in the breast meat ( P <= 0.05). Compared to females, males displayed higher feed intake and growth, and more favorable feed conversion ( P < 0.001). Carcass and p. major yields were greater in females ( P < 0.001) which also showed a higher occurrence of spaghetti meat compared to males ( P < 0.001). In conclusion, C. vulgaris can be used to replace until 3% of soybean meal in diets for broiler chickens without negative implications, while positively affecting breast meat color according to consumers ' preferences. However, the microalgae inclusion did not mitigate the negative effects of a chronic heat stress on growth performance nor reduced the occurrence of any myopathies.
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页数:16
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