Long-Term Feeding of Dairy Goats with 40% Artichoke by-Product Silage Preserves Milk Yield, Nutritional Composition and Animal Health Status
Monllor, Paula (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)
Zemzmi, Jihed (Universitat Autònoma de Barcelona. Departament de Ciència Animal i dels Aliments)
Muelas, Raquel (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)
Roca, Amparo (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)
Sendra Nadal, Esther (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)
Romero, Gema (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)
Díaz, José Ramón (Universidad Miguel Hernández de Elche. Instituto de Investigación e Innovación Agroalimentaria y Agroambiental)

Data:	2023
Resum:	The rational use of agriculture and agro-industrial by-products in ruminant nutrition contributes to greater respect for the environment in addition to a better final product quality. Artichoke crops are widespread in the Mediterranean region but mostly not properly valued. Previous studies carried out with artichoke by-product silage at 25, 40 and 60% inclusion in dairy goat feed for one month showed that 40% inclusion would be a good option without any harm to milk yield and composition or animal health status. Therefore, it is worth studying the effect of feeding animals with 40% artichoke by-product silage during a full lactation period. No negative effects were observed on animal performances and productivity, allowing us to reduce agroindustry wastes and offering a long-term preserved by-product that promotes a sustainable circular economy and the production of animal products with high nutritional value, like goat milk. The aim of this work is to study the effect of 40% inclusion of artichoke by-product silage (AB) in dairy goat diets on milk yield, composition and animal health status during a full lactation period compared to an isoenergetic and isoproteic mixed ration based on alfalfa hay and a cereal and legume mixture. Milk yield was not affected by the dietary treatments, and neither was body weight. AB treatment reduced whey protein (0. 38 vs. 0. 42%, p < 0. 05) and milk urea concentrations (687 vs. 773 mg/L, respectively, p < 0. 001), and did not affect total true protein (3. 22 vs. 3. 24% p > 0. 05) or other macro-composition variables. AB treatment showed higher milk concentrations of Ca (p < 0. 05), Mn (p < 0. 01), Cu (p < 0. 01) and Zn (p < 0. 001) compared to the control group (C). Slight differences were observed in milk fatty acid profile without any negative effects (p > 0. 05) on the blood cholesterol and glucose of goats. The AB group reduced blood urea due to its high dietary total phenol content. However, it had a positive effect on β-hydroxybutyrate (p < 0. 05) and nonesterified fatty acids (p > 0. 05). It was concluded that 40% artichoke by-product inclusion in dairy goat feed for the whole lactation period (23 weeks) is a sustainable solution, reducing feeding cost by 12. 5% per kg of dry matter, contributing to a better circular economy without any negative repercussions on the productivity and health of Murciano-Granadina dairy goats.
Ajuts:	Ministerio de Educación FPU14/06058 Ministerio de Ciencia, Innovación y Universidades UP2021-036
Drets:	Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, la comunicació pública de l'obra i la creació d'obres derivades, fins i tot amb finalitats comercials, sempre i quan es reconegui l'autoria de l'obra original.
Llengua:	Anglès
Document:	Article ; recerca ; Versió publicada
Matèria:	Urea ; Mineral profile ; Fatty acid profile ; Circular economy
Publicat a:	Animals, Vol. 13 (november 2023) , ISSN 2076-2615

DOI: 10.3390/ani13223585
PMID: 38003201

16 p, 681.3 KB

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