Association between chitosan and sources of unsaturated fatty acids improvement the ruminal fermentation, omasal outflow and rumen dynamics of lactating Jersey cows.
IF 2 3区 农林科学Q1 AGRICULTURE, DAIRY & ANIMAL SCIENCE
Olga Cedro de Menezes, Vinícius M De Carvalho, Victor H O de Queiroz, Camilla A Do N Rezende, Quésia G Costa, Layse A Gordiano, Maria L G M L de Araújo, Cláudio V D M Ribeiro, Arlindo S Netto, Polyana P Rotta, Douglas Dos S Pina, Gleidson G P de Carvalho, Lara M S Brant, Marcus V G Loiola, José E De Freitas Júnior
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引用次数: 0
Abstract
The objective of this study was to evaluate the effects of chitosan (CH), with or without the inclusion of unsaturated fatty acid (UFA) sources, on intake and digestibility, ruminal fermentation, microbial protein synthesis, nitrogen balance, blood metabolites, milk production and composition, and ruminal dynamics and flow in lactating Jersey cows. Five rumen-fistulated Jersey cows [average days in milk = 105 ± 45 days; milk production = 18.0 ± 0.47 kg/day; body weight = 350 ± 25 kg] were used in a 5 × 5 Latin square design with 21-day periods. Five experimental diets were evaluated: (1) Control (CON), basal diet including 30 g/kg of palm oil; (2) (SOCH-) inclusion of 30 g/kg soybean oil (SO) without CH; (3) (WSCH-) inclusion of 160 g/kg whole raw soybeans (WS) without CH; (4) (SOCH+) inclusion of 30 g/kg SO and 2 g/kg CH; (5) (WSCH+) inclusion of 160 g/kg WS and 2 g/kg CH. There was a CH and UFA interaction effect on acetate (C2) concentration (p = 0.005), propionate (C3) concentration (p = 0.008), the C2:C3 ratio (p < 0.001), and the milk fat content of trans-9 C18:1 fatty acid (FA) (p = 0.004). The inclusion of SO, with or without CH, proved to be more active in improving ruminal fermentation patterns by increasing propionate concentration. Furthermore, incorporating SO into the diets of lactating Jersey cows increased CLA, particularly cis-9, trans-11, in milk fat, offering health benefits. We recommend further research to assess the effects of UFA supplementation in combination with CH.
期刊介绍:
Archives of Animal Nutrition is an international journal covering the biochemical and physiological basis of animal nutrition. Emphasis is laid on original papers on protein and amino acid metabolism, energy transformation, mineral metabolism, vitamin metabolism, nutritional effects on intestinal and body functions in combination with performance criteria, respectively. It furthermore deals with recent developments in practical animal feeding, feedstuff theory, mode of action of feed additives, feedstuff preservation and feedstuff processing. The spectrum covers all relevant animal species including food producing and companion animals, but not aquatic species.
Seldom can priority be given to papers covering more descriptive studies, even if they may be interesting and technically sound or of impact for animal production, or for topics of relevance for only particular regional conditions.