Canadian Journal of Animal Science最新文献_第3页

Reflections on a chromic oxide paper 44 years later: most cited paper in 99-year history of the Canadian Journal of Animal Science 44 年后对一篇氧化铬论文的反思：《加拿大动物科学杂志》99 年历史上被引用次数最多的论文

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-03-21 DOI: 10.1139/cjas-2024-0001

T.W. Fenton, Mirjana Fenton

引用次数: 0

The effect of feeding flaxseed as a source of omega-3 fatty acids to broiler and layer breeders during rearing and lay on body weight, reproductive performance, and hatchability performance indices 肉鸡和蛋鸡育雏和产蛋期间饲喂亚麻籽作为欧米加-3 脂肪酸来源对体重、繁殖性能和孵化性能指标的影响

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-03-12 DOI: 10.1139/cjas-2023-0118

Rosemary H. Whittle, E. Kiarie, Tina M. Widowski

{"title":"The effect of feeding flaxseed as a source of omega-3 fatty acids to broiler and layer breeders during rearing and lay on body weight, reproductive performance, and hatchability performance indices","authors":"Rosemary H. Whittle, E. Kiarie, Tina M. Widowski","doi":"10.1139/cjas-2023-0118","DOIUrl":"https://doi.org/10.1139/cjas-2023-0118","url":null,"abstract":"Omega-3 fatty acids (n-3 FA) are fed to chickens to enrich eggs for human consumption. Feeding n-3 FA to breeder flocks could benefit the breeders and improve their offspring’s health, welfare, and productivity. This study assessed the impacts of feeding flaxseed (n-3 FA source) on broiler breeders’ and layer breeders’ production performance. In experiment one, Ross 708 broiler breeders were fed a control or flaxseed (2.57% co-extruded flaxseed and pulses) diet during rearing and laying. In experiment two, Shaver White and ISA Brown layer breeders were fed a control or flaxseed diet. Diet tended to affect broiler breeder body weight (BW) (P=0.06) and significantly affected BW uniformity (P=0.045). There were no significant pairwise comparisons. Broiler breeders fed flaxseed produced more eggs than control breeders (P<0.001) and had better feed conversion per egg mass (P<0.001). Maternal diet tended to affect broiler offspring sex (P=0.08), but there were no significant pairwise comparisons. Flaxseed diet didn’t affect layer breeder weight (P=0.90) but decreased uniformity (P=0.07). Strain (P=0.04), but not diet (P=0.95), influenced the sex of layer offspring. More female chicks hatched from Shaver White than ISA Brown breeders. Feeding flaxseed didn’t negatively affect productivity. Feeding n-3 FA may benefit broiler breeder egg production.","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140248620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating feather corticosterone and fault bars along the length of domestic male turkey (Meleagris gallopavo) feathers 调查家养雄性火鸡（Meleagris gallopavo）羽毛皮质酮和沿羽毛长度方向的断层条纹

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-03-06 DOI: 10.1139/cjas-2023-0106

Anna R. Naim, N. van Staaveren, Ben Wood, A. Harlander-Matauschek, C. Baes, E. Leishman

{"title":"Investigating feather corticosterone and fault bars along the length of domestic male turkey (Meleagris gallopavo) feathers","authors":"Anna R. Naim, N. van Staaveren, Ben Wood, A. Harlander-Matauschek, C. Baes, E. Leishman","doi":"10.1139/cjas-2023-0106","DOIUrl":"https://doi.org/10.1139/cjas-2023-0106","url":null,"abstract":"Fault bars are visible deformities in the feather structure potentially related to the stress response and may be an interesting trait that can reflect robustness. This study’s objective was to describe fault bars along the length of domestic turkey feathers and investigate whether fault bars are associated with feather corticosterone (FCORT). The same primary wing feather was evaluated from 75 male turkeys from three genetic lines. Feathers were cut into three (proximal, middle, and distal) sections to score fault bar presence, incidence, and severity. FCORT was measured for each feather section using ELISA. Linear mixed models were used to investigate differences in the fault bar presence, incidence, and severity between feather sections and genetic line, as well as investigate associations between the fault bar measures and FCORT. There was a significant increase in FCORT and fault bar incidence from proximal to distal feather sections ( P < 0.0001). In the distal section only, sections with fault bars had significantly higher FCORT compared to sections without fault bars ( P = 0.0088). No associations were found between fault bars and FCORT in the other sections. Consequently, associating FCORT and fault bars using whole primary wing feathers may be challenging. Future work should reevaluate this relationship longitudinally to better understand fault bar development.","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140261423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Modulation of Functional Activity of Heat-Stressed Chicken Macrophages by Poultry-Derived Probiotic Lactobacilli 禽源性益生菌乳酸菌对热应激鸡巨噬细胞功能活性的调节作用

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-03-05 DOI: 10.1139/cjas-2023-0124

Khaled Abdelaziz, Thandi Nixon, Annie Joye, Hosni Hassan, Mohammadali Alizadeh, Shayan Sharif, R. Kulkarni

{"title":"Modulation of Functional Activity of Heat-Stressed Chicken Macrophages by Poultry-Derived Probiotic Lactobacilli","authors":"Khaled Abdelaziz, Thandi Nixon, Annie Joye, Hosni Hassan, Mohammadali Alizadeh, Shayan Sharif, R. Kulkarni","doi":"10.1139/cjas-2023-0124","DOIUrl":"https://doi.org/10.1139/cjas-2023-0124","url":null,"abstract":"This study investigated the potential role of lactobacilli in mitigating the negative effects of heat stress on the functional activity of chicken macrophages. Macrophage-like MQ-NCSU cells were incubated at 40oC or 44oC in the presence or absence of a single or a mixture of different poultry-derived Lactobacillus species, including L. animalis, L. acidophilus, L. reuteri, and L. crispatus. Macrophage activation was evaluated by measuring nitric oxide (NO) production, phagocytic activity, and the transcription levels of cytokines, chemokine, and Toll-like receptors (TLRs). Macrophages exposed to heat stress exhibited increased production of NO, diminished expression of interleukin (IL)-1β and IL-12p40, and elevated expression of TLR2 and TLR4, whereas no significant alterations in the phagocytic activity of macrophages were observed. Conversely, treatment of macrophages with probiotic lactobacilli counteracted the effects associated with heat stress. This was evidenced by a notable enhancement in macrophage phagocytic activity, NO production and expression of IL-1β, IL-12p40, IL-18, and CXCL8, coupled with a reduction in TLR2 and TLR4 expression. These findings suggest that probiotic lactobacilli could be given to chickens to mitigate the negative effects of heat stress on the innate immune system. However, further studies are required to validate the observed effects in an in vivo model.","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140079248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Ammonium phosphate is a potential nitrogen supplement in nitrogen-limiting diets for growing pigs 磷酸铵是生长猪限氮日粮中一种潜在的氮补充剂

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-29 DOI: 10.1139/cjas-2024-0004

Miranda J Buchinski, Carley M Camiré, O. O. Babatunde, A. Shoveller, D. Columbus

引用次数: 0

Evaluation of the effects of hempseed cake on plasma metabolites and cytokines in response to an LPS challenge in finishing steers 评估大麻籽饼对育成公牛面对 LPS 挑战时血浆代谢物和细胞因子的影响

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-12 DOI: 10.1139/cjas-2023-0085

Thomas M. Winders, S. Amat, Kendall Swanson

引用次数: 0

Evaluation of the effects of hempseed cake on plasma metabolites and cytokines in response to an LPS challenge in finishing steers 评估大麻籽饼对育成公牛面对 LPS 挑战时血浆代谢物和细胞因子的影响

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-12 DOI: 10.1139/cjas-2023-0085

Thomas M. Winders, S. Amat, Kendall Swanson

引用次数: 0

Porcine in vitro digestion and solubilization of non-starch polysaccharides in corn and wheat supplemented with xylanase and feruloyl esterase 猪体外消化和溶解玉米和小麦中的非淀粉多糖，并辅以木聚糖酶和阿魏酰酯酶

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-09 DOI: 10.1139/cjas-2023-0086

Harriet Njeru, K. B. Bach Knudsen, T. Woyengo

{"title":"Porcine in vitro digestion and solubilization of non-starch polysaccharides in corn and wheat supplemented with xylanase and feruloyl esterase","authors":"Harriet Njeru, K. B. Bach Knudsen, T. Woyengo","doi":"10.1139/cjas-2023-0086","DOIUrl":"https://doi.org/10.1139/cjas-2023-0086","url":null,"abstract":"A study evaluated porcine in vitro digestion and non-starch polysaccharide (NSP) solubilization of corn and wheat without or with xylanase alone or xylanase plus feruloyl esterase (FE). The enzymes supplied 4000 U of xylanase and 35 U of FE per kilogram of sample. Samples were digested with pepsin at pH of 2.0 and then with pancreatin at pH of 6.8.. The digested samples were filtered to obtain unhydrolyzed residue, which was then washed using alcohol and acetone. The cereal grains (CG) before in vitro digestion and the washed unhydrolyzed residues were analyzed for dry matter and NSP. Xylanase improved (P < 0.05) IVDDM for wheat (85 vs. 89%), but not for corn (78 vs. 79%). Addition of FE to the xylanase-supplemented CG increased (P < 0.05) IVDDM for both CG, and reduced (P < 0.05) the arabinoxylans in the unhydrolyzed residue for corn, but not for wheat. In conclusion, xylanase product used in the current study is more effective in improving digestibility of nutrients in wheat than in corn. The FE product used in the current study can improve the efficacy of xylanase in improving nutrient digestibility of wheat and corn","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139788595","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Porcine in vitro digestion and solubilization of non-starch polysaccharides in corn and wheat supplemented with xylanase and feruloyl esterase 猪体外消化和溶解玉米和小麦中的非淀粉多糖，并辅以木聚糖酶和阿魏酰酯酶

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-09 DOI: 10.1139/cjas-2023-0086

Harriet Njeru, K. B. Bach Knudsen, T. Woyengo

{"title":"Porcine in vitro digestion and solubilization of non-starch polysaccharides in corn and wheat supplemented with xylanase and feruloyl esterase","authors":"Harriet Njeru, K. B. Bach Knudsen, T. Woyengo","doi":"10.1139/cjas-2023-0086","DOIUrl":"https://doi.org/10.1139/cjas-2023-0086","url":null,"abstract":"A study evaluated porcine in vitro digestion and non-starch polysaccharide (NSP) solubilization of corn and wheat without or with xylanase alone or xylanase plus feruloyl esterase (FE). The enzymes supplied 4000 U of xylanase and 35 U of FE per kilogram of sample. Samples were digested with pepsin at pH of 2.0 and then with pancreatin at pH of 6.8.. The digested samples were filtered to obtain unhydrolyzed residue, which was then washed using alcohol and acetone. The cereal grains (CG) before in vitro digestion and the washed unhydrolyzed residues were analyzed for dry matter and NSP. Xylanase improved (P < 0.05) IVDDM for wheat (85 vs. 89%), but not for corn (78 vs. 79%). Addition of FE to the xylanase-supplemented CG increased (P < 0.05) IVDDM for both CG, and reduced (P < 0.05) the arabinoxylans in the unhydrolyzed residue for corn, but not for wheat. In conclusion, xylanase product used in the current study is more effective in improving digestibility of nutrients in wheat than in corn. The FE product used in the current study can improve the efficacy of xylanase in improving nutrient digestibility of wheat and corn","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-02-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139848415","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of Feeding Calcium Gluconate Embedded in a Hydrogenated Fat Matrix on Performance, Gastrointestinal Fermentation, Ruminal Morphology, Carcass Merit and Meat Quality for Finishing Beef Heifers 饲喂嵌入氢化脂肪基质中的葡萄糖酸钙对育成肉用小母牛的生产性能、胃肠道发酵、反刍形态、胴体品质和肉质的影响

IF 1 4区农林科学

Canadian Journal of Animal Science Pub Date : 2024-02-06 DOI: 10.1139/cjas-2023-0055

D. M. Watanabe, J. Doelman, Dave J. Seymour, M. Sanz-Fernández, Ó. López-Campos, Nuria Prieto Benavides, Paweł Górka, G. B. Penner

{"title":"Effect of Feeding Calcium Gluconate Embedded in a Hydrogenated Fat Matrix on Performance, Gastrointestinal Fermentation, Ruminal Morphology, Carcass Merit and Meat Quality for Finishing Beef Heifers","authors":"D. M. Watanabe, J. Doelman, Dave J. Seymour, M. Sanz-Fernández, Ó. López-Campos, Nuria Prieto Benavides, Paweł Górka, G. B. Penner","doi":"10.1139/cjas-2023-0055","DOIUrl":"https://doi.org/10.1139/cjas-2023-0055","url":null,"abstract":"Twenty-one beef heifers were used in a randomized complete block design lasting 206 ± 8 d (mean ± SD) to evaluate DMI, growth, and gastrointestinal tract and carcass characteristics with increasing dose of dietary hydrogenated fat-embedded calcium gluconate (HFCG). Dietary treatments included HFCG included at: 0.0 (CON); 0.09% (CG09), or 0.18% DM (CG18). Heifers were fed individually and fecal samples were collected on d 171 and 192. Gastrointestinal tissue, digesta, carcass merit, and meat quality and sensory characteristics were assessed after slaughter. Data were analyzed to determine the linear and quadratic effects of HFCG dose. Dry matter intake, ADG, and G:F were not affected (P ≥ 0.08) by dose of HFCG. Gastrointestinal fermentation was minimally affected but quadratic responses (P = 0.03 and P = 0.01, respectively) were observed for jejunal digesta pH and for the molar proportion of isovalerate in colon digesta where both increased and then decreased as HFCG dose increased. Carcass (P ≥ 0.30), meat quality (P ≥ 0.06), and sensory characteristics (P ≥ 0.21) were not affected by dose of HFCG. We conclude that feeding HFCG to finishing beef heifers diet did not affect DMI, growth, gastrointestinal fermentation parameters, or carcass merit, meat quality and palatability.","PeriodicalId":9512,"journal":{"name":"Canadian Journal of Animal Science","volume":null,"pages":null},"PeriodicalIF":1.0,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139802097","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0