Effects of glutamine on growth performance and immune function of high-concentrate fattening Hu lambs

Wu, Qiu Jue; Wang, C.; Zhu, Longlong; Wang, S.Q.; Zhao, L.; Xing, Z.Y.; Zhang, B.L.; Jia, W.H.; Ma, Yan; Wang, Y.Q.

doi:10.1016/j.smallrumres.2022.106808

Cited by 2 publications

(2 citation statements)

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“…Furthermore, according to Romano et al [34] , this leads to the concept of ‘optimal nutrition’ being difficult to define due to various factors such as dietary goals, sex, age, health, environment, and species. Previously described in a review of the dietary essentiality of nutritionally NEAAs for animals and humans [2] , Wu et al [19] observed that dietary Gln supplementation may increase lamb immunological function by supplying energy. Indeed, this finding was also emphasized by Ma and Ma [35] .…”

Section: Discussionmentioning

confidence: 99%

“…Early lactating cows cannot achieve maximum milk protein production without a post-ruminal supply of Gln or Pro [17 , 18] . Wu et al [19] reported that L-Gln supplementation in calf diets could ameliorate the adverse effects of abrupt weaning. Likewise, administration of glutamine (Gln) to Holstein dairy cows can improve total antioxidant status and plasma glutathione peroxidase activity [20] .…”

Section: Introductionmentioning

confidence: 99%

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Nonessential amino acids in tropical ruminant feed: Investigating grass and legume forages of Indonesia

Tresia,

Anggraeny,

Winarsih

et al. 2024

J Adv Vet Anim Res

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Objective: This study aimed to examine the concentration of nonessential amino acids (NEAAs) in ruminant feed in tropical areas, with a focus on forage grasses and legumes in Indonesia. Materials and Methods: A total of 11 grasses (Chrysopogon zizanioides, Brachiaria brizantha, Brachiaria humidicola, Paspalum dilatatum, Paspalum atatum, Chloris gayana, Pennisetum polystachion, Panicum maximum, Cenchrus biflorus, Andropogon canaliculatus, and Digotaria decumbens) and six legumes (Arachis hypogaea, Pueararia Javanica, Centrosema pubescens, Clitoria ternatea, and Arachis pintoi) were analyzed for NEAA content using high-performance liquid chromatography (HPLC). Results: Based on the results of this research, it was found that almost all NEAA content in forage was less than 3% (Serine (Ser), Alanine (Ala), Glycine (Gly), Tyrosine (Tyr), Proline (Pro), Cysteine (Cys), and Asparagine (Asn), except for glutamic (Glu) acid and arginine (Arg) in some legumes. The Glu content in grass ranges from 0.76% to 2.61%, and the Arg content ranges from 0.92% to 2.09%. These two NEAAs were most abundant in grasses and legumes, with concentrations of 5.10% to 6.27% and 3.10% to 5.53%, respectively. Conclusion: Our study concluded that Glu and Arg were the most abundant NEAAs in tropical forages in Indonesia, with legumes having a higher concentration of NEAAs compared to grasses. Among the legumes, A. hypogaea had the highest NEAA content (23.40%), while among the forages, C. zizanioides had the highest NEAA content (12.37%). However, it was observed that neither legumes nor grasses could fulfill the metabolizable TNEAAs requirements for gaining cattle (250 kg of empty body weight gain), unlike commercial concentrates, which were found to meet the requirements, especially for Arg, Glu, and thyronine. The provision of concentrate is necessary to supplement forage to meet the NEAA needs for cattle.

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